50cba00..master · project-m36

git.iko.soy/project-m36

119 files changed+3485−2102

unifiedsplit

.appveyor.yml−1

@@ -17,7 +17,6 @@ environment:

1717 global:

1818 STACK_ROOT: "c:\\sr"

1919 matrix:

20− - YAML: "stack.ghc8.2.yaml"

2120 - YAML: "stack.ghc8.6.yaml"

2221

2322platform:

.github/workflows/ci.yamlnew file+69

@@ -0,0 +1,69 @@

1+name: "CI"

2+on:

3+ pull_request:

4+ push:

5+jobs:

6+ dockerimage:

7+ runs-on: ubuntu-latest

8+ steps:

9+ - uses: actions/checkout@v2.3.1

10+ - uses: cachix/install-nix-action@v12

11+ with:

12+ nix_path: nixpkgs=channel:nixos-unstable

13+ - uses: cachix/cachix-action@v8

14+ with:

15+ name: project-m36

16+ signingKey: "${{ secrets.CACHIX_SIGNING_KEY }}"

17+ - run: cachix use iohk

18+ - name: docker load

19+ run: docker load < $(nix-build docker.nix)

20+ - name: docker login

21+ if: ${{ github.ref == 'refs/heads/master' }}

22+ run: echo ${{secrets.DOCKERHUB_PASSWORD}} | docker login --username ${{secrets.DOCKERHUB_USER}} --password-stdin

23+ - name: docker tag with version

24+ run: docker tag project-m36:latest projectm36/project-m36:$(awk '/^Version:/ {print $2}' project-m36.cabal)

25+ if: ${{ github.ref == 'refs/heads/master' }}

26+ - name: docker tag latest

27+ run: docker tag project-m36:latest projectm36/project-m36:latest

28+ if: ${{ github.ref == 'refs/heads/master' }}

29+ - run: docker push projectm36/project-m36

30+ if: ${{ github.ref == 'refs/heads/master' }}

31+

32+ stack-build:

33+ runs-on: ${{ matrix.os }}

34+ strategy:

35+ matrix:

36+ os: [ubuntu-latest]

37+ ghc:

38+ - ghc8.10

39+ - ghc8.8

40+ - ghc8.6

41+ include:

42+ - os: macos-latest

43+ ghc: ghc8.10

44+ env:

45+ STACK_YAML: stack.${{ matrix.ghc }}.yaml

46+ steps:

47+ - uses: actions/checkout@v2

48+ - name: Cache

49+ uses: actions/cache@v1

50+ with:

51+ path: ~/.stack

52+ key: ${{ runner.os }}-build-stack-${{ matrix.ghc }}-${{ hashFiles(env.STACK_YAML) }}-${{ hashFiles('**/*.cabal') }}

53+ restore-keys: |

54+ ${{ runner.os }}-build-stack-${{ matrix.ghc }}-${{ hashFiles(env.STACK_YAML) }}

55+ ${{ runner.os }}-build-stack-${{ matrix.ghc }}

56+ - name: Fix macOS cache bug

57+ run: rm -rf ~/.stack/setup-exe-cache

58+ - name: Build

59+ run: stack build --ghc-options -O2 --local-bin-path out --copy-bins

60+ - name: Test

61+ run: stack test --stack-yaml=${{ env.STACK_YAML }}

62+ - name: HLint

63+ run: curl -sSL https://raw.github.com/ndmitchell/hlint/master/misc/run.sh | sh -s .

64+ - name: Haddock

65+ run: stack --no-install-ghc --system-ghc --no-haddock-deps haddock

66+ - uses: actions/upload-artifact@v2

67+ with:

68+ name: project-m36-${{ matrix.os }}-${{ matrix.ghc }}

69+ path: out/

.gitignore+3−1

@@ -18,4 +18,6 @@ persistence-notes

1818jupyter/itutd.egg-info

1919jupyter/build

2020juyter/dist

21−.ipynb_checkpoints

21+.ipynb_checkpoints

22+project-m36.nix

23+stack.yaml

.travis.ymldeleted−60

@@ -1,60 +0,0 @@

1−# For more information, see https://github.com/ChrisPenner/haskell-stack-travis-ci

2−language: c

3−sudo: false

4−

5−git:

6− submodules: false # whether to recursively clone submodules

7−

8−cache:

9− directories:

10− - $HOME/.ghc

11− - $HOME/.cabal

12− - $HOME/.stack

13− - .stack-work

14− timeout: 1000

15−

16−matrix:

17− fast_finish: true

18− include:

19− - env: CACHE_NAME=8.4.4 STACK_YAML=stack.ghc8.4.yaml

20− compiler: ": #stack 8.4.4"

21−

22− - env: CACHE_NAME=8.6.5 STACK_YAML=stack.ghc8.6.yaml

23− compiler: ": #stack 8.6.5"

24−

25− - env: CACHE_NAME=osx-8.6.5 STACK_YAML=stack.ghc8.6.yaml

26− os: osx

27− osx_image: xcode11

28− compiler: ": #stack 8.6.5"

29−

30−before_script:

31− - unset CC

32− - export PATH=$HOME/.local/bin:/opt/ghc/$GHC_VERSION/bin:$PATH

33− - ./.travis/install-ghr.sh

34− - ./.travis/install-stack.sh

35−

36−# Here starts the actual work to be performed for the package under test;

37−# any command which exits with a non-zero exit code causes the build to fail.

38−script:

39− - |

40− # Run tests

41− set -e

42− ./.travis/install-dependencies.sh

43− stack --no-terminal --jobs=2 --system-ghc test

44− - |

45− #Run HLint

46− if [[ "$(uname)" = "Linux" ]]; then

47− curl -sL https://raw.github.com/ndmitchell/hlint/master/misc/travis.sh | sh -s lint src test examples --cpp-define VERSION_project_m36=HLINT

48− fi

49− - |

50− #Run Haddock

51− if [[ "$(uname)" = "Linux" ]]; then

52− stack --no-install-ghc --system-ghc --no-haddock-deps haddock

53− fi

54−

55−after_success:

56− - |

57− # Build and ship binary

58− #./.travis/attach-binary.sh

59−

60−# EOF

.travis/attach-binary.shdeleted−25

@@ -1,25 +0,0 @@

1−#!/bin/sh

2−set -o errexit -o verbose

3−

4−if test ! "$BUILD_BINARY" || test ! "$TRAVIS_TAG"

5−then

6− echo 'This is not a release build.'

7−elif test ! "$GITHUB_TOKEN"

8−then

9− echo 'The GITHUB_TOKEN environment variable is not set!'

10− exit 1

11−else

12− echo "Building binary for $TRAVIS_OS_NAME to $TRAVIS_TAG..."

13− stack build --ghc-options -O2 --pedantic

14− echo "Attaching binary for $TRAVIS_OS_NAME to $TRAVIS_TAG..."

15− OWNER="$(echo "$TRAVIS_REPO_SLUG" | cut -f1 -d/)"

16− REPO="$(echo "$TRAVIS_REPO_SLUG" | cut -f2 -d/)"

17− BIN="$(stack path --local-install-root)/bin/$REPO"

18− BUNDLE_NAME="$REPO-$TRAVIS_TAG-$TRAVIS_OS_NAME.tar.gz"

19− cp "$BIN" "./$REPO"

20− chmod +x "./$REPO"

21− tar -czf "$BUNDLE_NAME" "$REPO"

22− echo "SHA256:"

23− shasum -a 256 "$BUNDLE_NAME"

24− ghr -t "$GITHUB_TOKEN" -u "$OWNER" -r "$REPO" --replace "$(git describe --tags)" "$BUNDLE_NAME"

25−fi

.travis/install-dependencies.shdeleted−22

@@ -1,22 +0,0 @@

1−# Run tests

2−if [[ "$(uname)" = "Darwin" ]]; then

3− timeout_cmd="gtimeout"

4−else

5− timeout_cmd="timeout"

6−fi

7−$timeout_cmd 40m stack --no-terminal --jobs=2 --install-ghc --system-ghc build --only-dependencies --fast

8−ret=$?

9−case "$ret" in

10− 0)

11− # continue

12− ;;

13− 124)

14− echo "Timed out while installing dependencies."

15− echo "Try building again by pushing a new commit."

16− exit 1

17− ;;

18− *)

19− echo "Failed to install dependencies; stack exited with $ret"

20− exit "$ret"

21− ;;

22−esac

.travis/install-ghc.shdeleted−16

@@ -1,16 +0,0 @@

1−#!/bin/sh

2−set -eux

3−#assume stack is installed

4−STACK=~/.local/bin/stack

5−

6−fetch_ghc_osx() {

7− echo "Using stack to install GHC $GHC_VERSION"

8− $STACK setup $GHC_VERSION

9−}

10−

11−if [ "$(uname)" = "Darwin" ]; then

12− fetch_ghc_osx

13−else

14− #installed by apt

15− echo "Linux GHC $GHC_VERSION via APT already installed."

16−fi

.travis/install-ghr.shdeleted−21

@@ -1,21 +0,0 @@

1−#!/bin/sh

2−set -o errexit -o verbose

3−

4−if test ! "$BUILD_BINARY" || test ! "$TRAVIS_TAG"

5−then

6− echo 'This is not a release build.'

7−else

8− if [ "$TRAVIS_OS_NAME" = "linux" ]

9− then

10− ARCH="linux"

11− else

12− ARCH="darwin"

13− fi

14− echo "Installing ghr"

15− URL="https://github.com/tcnksm/ghr/releases/download/v0.5.4/ghr_v0.5.4_${ARCH}_386.zip"

16− curl -L ${URL} > ghr.zip

17− mkdir -p "$HOME/bin"

18− export PATH="$HOME/bin:$PATH"

19− unzip ghr.zip -d "$HOME/bin"

20− rm ghr.zip

21−fi

.travis/install-stack.shdeleted−27

@@ -1,27 +0,0 @@

1−#!/bin/sh

2−

3−# Adapted from https://github.com/commercialhaskell/stack

4−

5−set -eux

6−

7−travis_retry() {

8− cmd=$*

9− $cmd || (sleep 2 && $cmd) || (sleep 10 && $cmd)

10−}

11−

12−fetch_stack_osx() {

13− curl -skL https://get.haskellstack.org/stable/osx-x86_64.tar.gz | tar xz --strip-components=1 --include '*/stack' -C ~/.local/bin;

14−}

15−

16−fetch_stack_linux() {

17− curl -sL https://get.haskellstack.org/stable/linux-x86_64.tar.gz | tar xz --wildcards --strip-components=1 -C ~/.local/bin '*/stack';

18−}

19−

20−# We need stack to generate cabal files with precise bounds, even for cabal

21−# builds.

22−mkdir -p ~/.local/bin;

23−if [ "$(uname)" = "Darwin" ]; then

24− travis_retry fetch_stack_osx

25−else

26− travis_retry fetch_stack_linux

27−fi

Changelog.markdown+21

@@ -1,3 +1,24 @@

1+# 2021-04-01 (v0.9.3)

3+* add new ":importtutd <URI> <SHA256 hash>" feature to import TutorialD from a local file or a HTTP/HTTPS URI

5+# 2020-12-27 (v0.9.0)

7+* replace unmaintained distributed-process-client-server RPC package with new curryer RPC package

8+* drop support for GHC 8.2 and GHC 8.4 due to dependency on DerivingVia extension

10+# 2020-11-21 (v0.8.2)

11+

12+* support multiple extend expressions in TutorialD

13+* fix parsing of Bool atoms in TutorialD

14+* fix database context expressions which include self-references such as `s:=s union s`

15+* show constraints as TutorialD when using tutd console

16+* add `RelationalExprAtom` data type useful for storing `RelationalExpr` within the database

17+

18+# 2020-10-05 (v0.8.1)

19+

20+* support GHC 8.10

21+

122# 2020-05-25 (v0.8)

223

324* refactor backend to maximize laziness: [An Architecture for Data Independence](docs/data_independence.markdown)

README.markdown+9−3

@@ -4,8 +4,8 @@

44[![Public Domain](https://img.shields.io/badge/license-Public%20Domain-brightgreen.svg)](http://unlicense.org)

55[![Hackage](https://img.shields.io/hackage/v/project-m36.svg)](http://hackage.haskell.org/package/project-m36)

66[![Hackage dependency status](https://img.shields.io/hackage-deps/v/project-m36.svg)](http://packdeps.haskellers.com/feed?needle=project-m36)

7−[![Build status](https://travis-ci.org/agentm/project-m36.svg?branch=master)](https://travis-ci.org/agentm/project-m36)

87[![Windows Build status](https://ci.appveyor.com/api/projects/status/q7jyddd6dy1ibqdo/branch/master?svg=true)](https://ci.appveyor.com/project/agentm/project-m36)

8+[![Github Workflow status](https://github.com/agentm/project-m36/workflows/CI/badge.svg)](https://github.com/agentm/project-m36/actions?query=workflow%3ACI)

1010

1111*Software can always be made faster, but rarely can it be made more correct.*

@@ -14,6 +14,12 @@

1414

1515Project:M36 implements a relational algebra engine as inspired by the writings of Chris Date.

1616

17+## Quick Install

18+

19+Project:M36 can be downloaded and run via docker, which supports Windows 10, macOS, and Linux.

20+

21+Run `docker run -it projectm36/project-m36 tutd` to start the TutorialD command line interface.

22+

1723## Description

1824

1925Unlike most database management systems (DBMS), Project:M36 is opinionated software which adheres strictly to the mathematics of the relational algebra. The purpose of this adherence is to prove that software which implements mathematically-sound design principles reaps benefits in the form of code clarity, consistency, performance, and future-proofing.

@@ -38,7 +44,7 @@ Project:M36 supports multiple frontends which target different audiences.

3844

3945* [Developer's Blog](https://agentm.github.io/project-m36/)

4046* [Mailing List/Discussion Group](https://groups.google.com/d/forum/project-m36)

41−* IRC Channel: chat.freenode.net #project-m36

47+* IRC Channel: irc.libera.chat #project-m36 -- [Chat via Web Client](http://kiwiirc.com/nextclient/irc.libera.chat:+6697/#project-m36)

4248* [Hackage](https://hackage.haskell.org/package/project-m36)

4349* [Diogo Biazus' Project:M36 Video Tutorial](https://www.youtube.com/watch?v=_GC_lxlVEnE)

4450

@@ -88,7 +94,7 @@ Project:M36 supports multiple frontends which target different audiences.

8894

8995## Development

9096

91−Project:M36 is developed in Haskell and compiled with GHC 8.2.2 or later.

97+Project:M36 is developed in Haskell and compiled with GHC 8.6 or later.

9298

9399## Related Projects

94100

cabal.project+7−6

@@ -1,9 +1,10 @@

1−-- this is needed for GHC8 until distributed-process-extras is updated on Hackage with increased upper bounds

21packages: project-m36.cabal

3−allow-newer: distributed-process-extras:time,distributed-process-extras:binary,distributed-process-client-server:binary,distributed-process-client-server:time,distributed-process-async:time,distributed-process-async:binary,distributed-process-extras:stm,distributed-process-extras:containers,network-transport-tcp:containers,distributed-process-client-server:stm,distributed-process-client-server:containers,distributed-process-async:stm,distributed-process-async:containers,distributed-process:hashable,distributed-process-extras:hashable,distributed-process-client-server:hashable,distributed-process-async:hashable

5−--necessary for GHC 8.6 support :/

3+package *

4+ split-sections: True

6+--high-performance streaming library

67source-repository-package

7− type: git

8− location: https://github.com/agentm/distributed-process.git

9− tag: f352e097fbe494ad648b4e09249f865893ae90a3

8+ type: git

9+ location: https://github.com/composewell/streamly.git

10+ tag: ac3af8749194f1788704dda8667d0b3807075cc2

default.nixnew file+1

@@ -0,0 +1 @@

1+(import ./release.nix { }).project

docker.nixnew file+18

@@ -0,0 +1,18 @@

1+{ compiler ? "ghc8104"

2+, sources ? import ./nix/sources.nix

3+, pkgs ? import sources.nixpkgs { }

4+}:

5+let

6+ release = import ./release.nix { inherit pkgs compiler sources; };

7+ static-project-m36 = pkgs.haskell.lib.dontCheck (pkgs.haskell.lib.justStaticExecutables release.project);

8+in

9+pkgs.dockerTools.buildImage {

10+ name = "project-m36";

11+ tag = "latest";

12+ contents = [ static-project-m36 ];

13+ # expose default project-m36 and websocket server ports

14+ config = {

15+ Env = [ "LC_ALL=en_US.UTF-8" ];

16+ ExposedPorts = { "6543/tcp" = { }; "8000/tcp" = { }; };

17+ };

18+}

docs/15_minute_tutorial.markdown+64−67

@@ -4,17 +4,19 @@ Thank you for evaluating Project:M36, a new relational algebra engine written in

55## Prerequisites

7−* any Linux

8−* GHC 8.2 or later version (Haskell compiler)

9−* cabal (package downloader) installed

7+* any Linux, MacOS, or Windows computer with Docker installed

108

119## Download and Install

1210

11+Run a pre-built docker image:

12+

13+```docker run -it projectm36/project-m36 tutd```

14+

15+or build it yourself with GHC >= 8.6:

16+

1317```bash

1418git clone https://github.com/agentm/project-m36.git

15−cabal sandbox init

16−cabal install --dependencies-only

17−cabal run tutd

19+cabal new-run tutd

1820```

1921

2022## Some Basic TutorialD

@@ -26,18 +28,10 @@ Note that TutorialD is strongly-typed- no type coercions take place automaticall

2628### Load the Canonical Chris Date Example

2729

2830```

29−TutorialD (master/main): :importexample date

30−```

31−

32−or

33−

34−```

35−TutorialD (master/main): :importtud "scripts/DateExamples.tutd"

31+TutorialD (master/main): :importexample cjdate

3632```

3733

38−```:importtutd``` (do not skip typing the preceding colon), loads a file which contains a script written in the TutorialD dialect used by Project:M36 and executes it to change the state of the database. In this case, the relations "s" (supplier), "p" (product), and "sp" (suppliers-products) are now loaded.

39−

40−```:importexample date``` loads the date example directly without any file I/O, so it is safe to use with the websocket server.

34+```:importexample``` (do not skip typing the preceding colon), loads a built-in example schema and executes it to change the state of the database. In this case, the relations "s" (supplier), "p" (product), and "sp" (suppliers-products) are now loaded.

4135

4236### Execute Relational Expressions

4337

@@ -164,7 +158,7 @@ Database context expressions change the state of the database, much like "CREATE

164158#### Create a Relation Variable

165159

166160```

167−TutorialD (master/main): x:=relation{name Text, age Int}{tuple{name "Steve", age 40},tuple{name "Mike", age 31}}

161+TutorialD (master/main): x:=relation{name Text, age Integer}{tuple{name "Steve", age 40},tuple{name "Mike", age 31}}

168162TutorialD (master/main): :showexpr x

169163┌────────┬──────────┐

170164│age::Int│name::Text│

@@ -179,23 +173,25 @@ This is similar to SQL's "CREATE TABLE" operator.

179173#### Insert Additional Tuples

180174

181175```

182−TutorialD (master/main): x:=relation{name Text, age Int}{tuple{name "Steve", age 40},tuple{name "Mike", age 31}}

176+TutorialD (master/main): x:=relation{name Text, age Integer}{tuple{name "Steve", age 40},tuple{name "Mike", age 31}}

183177TutorialD (master/main): :showexpr x

184−┌────────┬──────────┐

185−│age::Int│name::Text│

186−├────────┼──────────┤

187−│40 │"Steve" │

188−│31 │"Mike" │

189−└────────┴──────────┘

178+┌────────────┬──────────┐

179+│age::Integer│name::Text│

180+├────────────┼──────────┤

181+│31 │"Mike" │

182+│40 │"Steve" │

183+└────────────┴──────────┘

184+

190185TutorialD (master/main): insert x relation{tuple{name "Bob", age 24}}

191186TutorialD (master/main): :showexpr x

192−┌────────┬──────────┐

193−│age::Int│name::Text│

194−├────────┼──────────┤

195−│40 │"Steve" │

196−│24 │"Bob" │

197−│31 │"Mike" │

198−└────────┴──────────┘

187+┌────────────┬──────────┐

188+│age::Integer│name::Text│

189+├────────────┼──────────┤

190+│31 │"Mike" │

191+│40 │"Steve" │

192+│24 │"Bob" │

193+└────────────┴──────────┘

194+

199195```

200196

201197Note that the relational insertion is identical to "x:=x union relation{...}".

@@ -204,50 +200,51 @@ Note that the relational insertion is identical to "x:=x union relation{...}".

204200

205201```

206202TutorialD (master/main): :showexpr s

207−┌──────────┬────────┬───────────┬───────────┐

208−│city::Text│s#::Text│sname::Text│status::Int│

209−├──────────┼────────┼───────────┼───────────┤

210−│"Paris" │"S2" │"Jones" │10 │

211−│"Paris" │"S3" │"Blake" │30 │

212−│"London" │"S1" │"Smith" │20 │

213−│"London" │"S4" │"Clark" │20 │

214−│"Athens" │"S5" │"Adams" │30 │

215−└──────────┴────────┴───────────┴───────────┘

203+┌──────────┬────────┬───────────┬───────────────┐

204+│city::Text│s#::Text│sname::Text│status::Integer│

205+├──────────┼────────┼───────────┼───────────────┤

206+│"London" │"S1" │"Smith" │20 │

207+│"Athens" │"S5" │"Adams" │30 │

208+│"Paris" │"S3" │"Blake" │30 │

209+│"London" │"S4" │"Clark" │20 │

210+│"Paris" │"S2" │"Jones" │10 │

211+└──────────┴────────┴───────────┴───────────────┘

216212TutorialD (master/main): update s where city="London" (status:=35)

217213TutorialD (master/main): :showexpr s

218−┌──────────┬────────┬───────────┬───────────┐

219−│city::Text│s#::Text│sname::Text│status::Int│

220−├──────────┼────────┼───────────┼───────────┤

221−│"London" │"S4" │"Clark" │35 │

222−│"London" │"S1" │"Smith" │35 │

223−│"Paris" │"S2" │"Jones" │10 │

224−│"Paris" │"S3" │"Blake" │30 │

225−│"Athens" │"S5" │"Adams" │30 │

226−└──────────┴────────┴───────────┴───────────┘

214+┌──────────┬────────┬───────────┬───────────────┐

215+│city::Text│s#::Text│sname::Text│status::Integer│

216+├──────────┼────────┼───────────┼───────────────┤

217+│"Athens" │"S5" │"Adams" │30 │

218+│"London" │"S1" │"Smith" │35 │

219+│"London" │"S4" │"Clark" │35 │

220+│"Paris" │"S3" │"Blake" │30 │

221+│"Paris" │"S2" │"Jones" │10 │

222+└──────────┴────────┴───────────┴───────────────┘

223+

227224```

228225#### Deleting Tuples from a Relation Variable

229226

230227```

231228TutorialD (master/main): :showexpr s

232−┌──────────┬────────┬───────────┬───────────┐

233−│city::Text│s#::Text│sname::Text│status::Int│

234−├──────────┼────────┼───────────┼───────────┤

235−│"Paris" │"S2" │"Jones" │10 │

236−│"Paris" │"S3" │"Blake" │30 │

237−│"London" │"S1" │"Smith" │20 │

238−│"London" │"S4" │"Clark" │20 │

239−│"Athens" │"S5" │"Adams" │30 │

240−└──────────┴────────┴───────────┴───────────┘

229+┌──────────┬────────┬───────────┬───────────────┐

230+│city::Text│s#::Text│sname::Text│status::Integer│

231+├──────────┼────────┼───────────┼───────────────┤

232+│"Paris" │"S2" │"Jones" │10 │

233+│"Paris" │"S3" │"Blake" │30 │

234+│"London" │"S1" │"Smith" │20 │

235+│"Athens" │"S5" │"Adams" │30 │

236+│"London" │"S4" │"Clark" │20 │

237+└──────────┴────────┴───────────┴───────────────┘

241238TutorialD (master/main): delete s where sname="Adams"

242239TutorialD (master/main): :showexpr s

243−┌──────────┬────────┬───────────┬───────────┐

244−│city::Text│s#::Text│sname::Text│status::Int│

245−├──────────┼────────┼───────────┼───────────┤

246−│"Paris" │"S2" │"Jones" │10 │

247−│"Paris" │"S3" │"Blake" │30 │

248−│"London" │"S1" │"Smith" │20 │

249−│"London" │"S4" │"Clark" │20 │

250−└──────────┴────────┴───────────┴───────────┘

240+┌──────────┬────────┬───────────┬───────────────┐

241+│city::Text│s#::Text│sname::Text│status::Integer│

242+├──────────┼────────┼───────────┼───────────────┤

243+│"Paris" │"S2" │"Jones" │10 │

244+│"London" │"S4" │"Clark" │20 │

245+│"Paris" │"S3" │"Blake" │30 │

246+│"London" │"S1" │"Smith" │20 │

247+└──────────┴────────┴───────────┴───────────────┘

251248```

252249

253250### Execute Transaction Graph Expressions

@@ -270,7 +267,7 @@ TutorialD (master/main): :rollback

270267

271268```

272269TutorialD (master/main): :branch experimental

273−TutorialD (experimental): employee:=relation{name Text, salary Int}

270+TutorialD (experimental): employee:=relation{name Text, salary Integer}

274271TutorialD (experimental): :commit

275272```

276273

docs/import_export_csv.markdown+2−2

@@ -9,7 +9,7 @@ If a relation variable cannot be exported due to data types which are not suppor

99### Example Export

1010

1111```

12−TutorialD (master/main): :importexample date

12+TutorialD (master/main): :importexample cjdate

1313TutorialD (master/main): :exportcsv s "/tmp/csv"

1414```

1515```

@@ -37,7 +37,7 @@ s#,sname,status,city

3737S6,Samson,100,New York

3838```

3939```

40−TutorialD (master/main): :importexample date

40+TutorialD (master/main): :importexample cjdate

4141TutorialD (master/main): :showexpr s

4242┌──────────┬────────┬───────────┬───────────────┐

4343│city::Text│s#::Text│sname::Text│status::Integer│

docs/introduction_to_projectm36.markdown+27−8

@@ -15,16 +15,35 @@ The relational algebra is the mathematical model underpinning Project:M36. When

1515

1616## Binary Releases

1717

18−### Windows

19−Project:M36 now provides binary installations for Windows. Check the (releases page)[https://github.com/agentm/project-m36/releases] for downloads.

18+The quickest and preferred method of installation is via docker, which works on Linux, macOS, and Windows. Docker downloads and runs preconfigured software in secure, sandboxed containers, preventing third-party software from altering the host system without your permission.

2019

21−### MacOS X

20+### Install Docker:

2221

23−Binary releases are not yet available for MacOS X, but compiling from source is easy.

22+* [Windows 10 Docker Installation](https://docs.docker.com/docker-for-windows/wsl/)

23+* [MacOS Docker Installation](https://docs.docker.com/docker-for-mac/install/)

24+* [Linux Docker Installation](https://docs.docker.com/engine/install/#server)

2425

25−### Linux

26+### Run TutorialD from Docker Image

2627

27−The currently-preferred method of installation is from source. A future enhancement would be installation from deb or rpm.

28+This downloads the docker image tagged "latest" and runs `tutd`, the TutorialD command line interface. Try the [15-Minute TutorialD Tutorial](15_minute_tutorial.markdown) and try some expressions.

29+

30+```bash

31+docker run -it projectm36/project-m36 tutd

32+```

33+

34+### Run Project:M36 Server

35+

36+The default port for the project-m36 server is 6543.

37+

38+```bash

39+docker run --network host projectm36/project-m36 project-m36-server -n <database_name>

40+```

41+

42+### Connect to Project:M36 Server

43+

44+```bash

45+docker run --network host projectm36/project-m36

46+```

2847

2948## Source Installation

3049

@@ -32,7 +51,7 @@ Requirements:

3251

3352To build with stack:

3453

35−* [GHC 8.4.4 or greater](https://www.haskell.org/downloads)

54+* [GHC 8.6.5 or greater](https://www.haskell.org/downloads)

3655* [Haskell stack](https://docs.haskellstack.org/en/stable/README/)

3756* Linux, macOS, or Microsoft Windows

3857

@@ -44,7 +63,7 @@ Compilation steps:

4463

4564At this point, the TutorialD interactive interpreter can be run using ```stack exec tutd```.

4665

47−Alternative building with GHC 8.4.4 or greater:

66+Alternative building with GHC 8.6.5 or greater:

4867

4968* ```cabal new-build```

5069

docs/introduction_to_the_relational_algebra.markdown+1−1

@@ -202,7 +202,7 @@ Join (Instructor relation)

202202

203203(Course Relation)

204204

205−|(Course Name, Course Name Type)|(Instructor, Instructor Name Type)|(Course Room Number, Room Number Type)|

205+|(Course Name, Course Name Type)|(Instructor Name, Instructor Name Type)|(Course Room Number, Room Number Type)|

206206|-------------------------------|----------------------------------|--------------------------------------|

207207|English 1|Steve|Room 104|

208208|French 2|Bob|Room 103|

docs/reaching_out_of_the_tarpit.markdown+1−1

@@ -57,7 +57,7 @@ Project:M36 implements multiple interfaces:

5757To understand how Project:M36 stacks up against the fictional programming language shown in the paper, we have implemented the [example from the paper](/examples/out_of_the_tarpit.tutd). The language used in the script is a dialect of Chris Date's TutorialD language. It can be loaded into an interactive ```tutd``` session like so:

5858

5959```

60−TutorialD (master/main): :importexample date

60+TutorialD (master/main): :importexample cjdate

6161TutorialD (master/main): :showexpr p

6262┌───────────────────┬────────────┬───────────────────┬────────────┬────────────┐

6363│address::Address │agent::Agent│dateRegistered::Day│photo::Text │price::Price│

docs/tutd_cheatsheet.markdown+3−1

@@ -47,7 +47,9 @@ Database context expressions take the current database context as input and alte

4747

4848|Database Context Expression |Description |

4949|------------------------------------------------------|---------------------------------------|

50−|`:importexample date`|Imports a precooked schema from Chris Date's books resulting in relvars `s`, `sp`, and `p`|

50+|`:importexample cjdate`|Imports a precooked schema from Chris Date's books resulting in relvars `s`, `sp`, and `p`|

51+|`:importtutd "file:///home/agentm/project-m36/scripts/emp.tutd"`|Imports TutorialD from file URI|

52+|`:importtutd "https://raw.githubusercontent.com/agentm/project-m36/master/scripts/emp.tutd" "effe32b247586dc3ac0079fc241b9618d41d189afcaeb7907edbe5a8b45992a4"`| Imports TutorialD from HTTP or HTTPS URI|

5153|`newrelvar:=relation{tuple{age 3}}`|Assign a new relation variable named `newrelvar`|

5254|`undefine s`|Remove a relation variable|

5355|`insert s relation{tuple{city "Boston",s# "S10",sname "Gonzalez",status 10}}`| Append to an existing relation variable with another relational expression|

docs/tutd_tutorial.markdown+56−2

@@ -19,7 +19,7 @@ TutorialD (master/main):

1919The examples in this tutorial can be executed after loading Chris Date's sample relations using:

2020

2121```

22−:importexample date

22+:importexample cjdate

2323```

2424

2525Each section assumes a fresh instance of the Date examples. The relation variables created in the script are:

@@ -30,6 +30,24 @@ Each section assumes a fresh instance of the Date examples. The relation variabl

3030|p|parts|

3131|sp|contains mapping of which suppliers supply which parts|

3232

33+### Importing TutorialD from Other Sources

34+

35+The `tutd` console can also run TutorialD from a local file or from a web server.

36+

37+To import TutorialD from a file:

38+

39+```

40+:importtutd "file:///home/agentm/project-m36/scripts/emp.tutd"

41+```

42+

43+or from a web server:

44+

45+```

46+:importtutd "https://raw.githubusercontent.com/agentm/project-m36/master/scripts/DateExamples.tutd" "db9f3d9fe06d0a29b8355e045b89ec94d6428e3a3de93def7ca77bf0298b7010"

47+```

48+

49+The second argument is an optional SHA256 hash in hexadecimal form. This can be used to validate that the script has not changed since the last import. Importing TutorialD from the web is in general safe because it is effectively sandboxed with "Safe Haskell" for functions, so the script is contained security-wise, however, nothing prevents the script from running forever. Downloading a schema from the web is a great way to share schemas and to kick start your project without starting from scratch.

50+

3351### Types

3452

3553TutorialD is strongly-typed. The basic built-in types are:

@@ -197,7 +215,7 @@ TutorialD (master/main): :showexpr s{all but city}

197215└────────┴───────────┴───────────────┘

198216```

199217

200−Projection attributes can also be derived from a relational expression using `all from`:

218+Projection attributes can be derived from a relational expression using `all from`:

201219

202220```

203221TutorialD (master/main): :showexpr (s join sp){all from s}

@@ -213,6 +231,42 @@ TutorialD (master/main): :showexpr (s join sp){all from s}

213231

214232Above, we join `s` and `sp` but project the result back onto the attributes of `s`.

215233

234+Projection attributes can be unioned from multiple sources using `union of`:

235+

236+```

237+TutorialD (master/main): :showexpr (s join sp){union of {all from s} {all but p#}}

238+┌──────────┬────────────┬────────┬───────────┬───────────────┐

239+│city::Text│qty::Integer│s#::Text│sname::Text│status::Integer│

240+├──────────┼────────────┼────────┼───────────┼───────────────┤

241+│"Paris" │400 │"S2" │"Jones" │10 │

242+│"London" │400 │"S1" │"Smith" │20 │

243+│"Paris" │200 │"S3" │"Blake" │30 │

244+│"London" │200 │"S4" │"Clark" │20 │

245+│"London" │200 │"S1" │"Smith" │20 │

246+│"Paris" │300 │"S2" │"Jones" │10 │

247+│"London" │100 │"S1" │"Smith" │20 │

248+│"London" │300 │"S4" │"Clark" │20 │

249+│"London" │300 │"S1" │"Smith" │20 │

250+│"London" │400 │"S4" │"Clark" │20 │

251+└──────────┴────────────┴────────┴───────────┴───────────────┘

252+```

253+

254+Here, after joining `s` and `p`, the union of all attributes from `s` and all attributes from `p` except for `p#` are returned.all

255+

256+Finally, projection attributes can be intersected using `intersection of`:

257+

258+```

259+TutorialD (master/main): :showexpr (s join sp){intersection of {all from s} {all from p}}

260+┌──────────┐

261+│city::Text│

262+├──────────┤

263+│"London" │

264+│"Paris" │

265+└──────────┘

266+```

267+

268+Here, after joining `s` and `p`, we project on the intersection of attributes from `s` and `p` which happens to be `city`.

269+

216270#### Restriction

217271

218272Restriction is applied using a "where" clause, much like in SQL.

examples/DerivingCustomTupleable.hs+4−2

@@ -3,16 +3,16 @@

33import ProjectM36.Tupleable.Deriving

44import ProjectM36.Atomable (Atomable)

55import Control.DeepSeq (NFData)

6−import Data.Binary (Binary)

76import Data.Text (Text)

87import GHC.Generics (Generic)

8+import Codec.Winery

1010newtype BlogId = BlogId { getBlogId :: Int }

1111 deriving stock (Eq, Ord, Show, Generic)

1212 deriving newtype (Num)

13+ deriving Serialise via WineryRecord BlogId

1314

1415instance NFData BlogId

15−instance Binary BlogId

1616instance Atomable BlogId

1717

1818data Blog = Blog

@@ -23,6 +23,7 @@ data Blog = Blog

2323 deriving stock (Show, Generic)

2424 deriving (Tupleable)

2525 via Codec (Field (DropPrefix "blog" >>> CamelCase)) Blog

26+ deriving Serialise via WineryRecord Blog

2627

2728data Comment = Comment

2829 { commentAuthorName :: Text

@@ -32,6 +33,7 @@ data Comment = Comment

3233 deriving stock (Show, Generic)

3334 deriving (Tupleable)

3435 via Codec (Field (DropPrefix "comment" >>> CamelCase)) Comment

36+ deriving Serialise via WineryRecord Comment

3537

3638main :: IO ()

3739main = do

examples/Plantfarm.hsnew file+446

@@ -0,0 +1,446 @@

1+{-# LANGUAGE DeriveGeneric #-}

3+{-# LANGUAGE OverloadedStrings #-}

5+{-# LANGUAGE DeriveAnyClass #-}

7+{-# LANGUAGE DerivingVia #-}

10+import Codec.Winery (Serialise, WineryVariant(WineryVariant))

11+import Control.DeepSeq (NFData)

12+import Data.Aeson (FromJSON, ToJSON(toEncoding, toJSON))

13+import Data.Data (Proxy(Proxy))

14+import Data.Either (lefts, rights)

15+import Data.Functor (($>))

16+import Data.Text as T (Text)

17+import qualified Data.Text.Lazy as TL (pack)

18+import GHC.Generics (Generic)

19+import qualified ProjectM36.Base as Base

20+import ProjectM36.Client

21+ ( AtomExprBase(NakedAtomExpr)

22+ , Atomable(toAddTypeExpr, toAtom)

23+ , AttributeName

24+ , Connection

25+ , ConnectionInfo(InProcessConnectionInfo)

26+ , DatabaseContextExpr

27+ , DatabaseContextExprBase(Delete)

28+ , PersistenceStrategy(NoPersistence)

29+ , RelationalError

30+ , RelationalExprBase(RelationVariable, Restrict)

31+ , RestrictionPredicateExprBase(AttributeEqualityPredicate)

32+ , SessionId

33+ , close

34+ , commit

35+ , connectProjectM36

36+ , createSessionAtHead

37+ , databaseContextExprForUniqueKey

38+ , defaultHeadName

39+ , emptyNotificationCallback

40+ , executeDatabaseContextExpr

41+ , executeRelationalExpr

42+ , withTransaction

43+ )

44+import qualified ProjectM36.Relation as Relation

45+import ProjectM36.Tupleable

46+ ( Tupleable(fromTuple)

47+ , toDefineExpr

48+ , toDeleteExpr

49+ , toInsertExpr

50+ , toUpdateExpr

51+ )

52+import qualified System.Random as R

53+

54+

55+import Control.Monad.IO.Class (MonadIO(liftIO))

56+import qualified Web.Scotty as S

57+

58+-- | This is an example showcasing the updating of data

59+-- with the help of plants. \\

60+-- This is a very simple example and of course not how

61+-- plants grow in nature. \\

62+-- The main goal of this example is to showcase the updating

63+-- of data and the different options of persistence.

64+-- You can just pipe the output from curl into jq:

65+--

66+-- curl -X POST -H 'Accept: application/json' http://localhost:8001/plant/water/angu | jq -r '.stage'

67+

68+

69+data Stage = Seed | Sprout | Seedling | Adult | Dead

70+ deriving (Show, Eq, Ord, Generic, NFData, Atomable)

71+ deriving Serialise via WineryVariant Stage

72+

73+

74+instance ToJSON Stage where -- The where can be removed and the implementation commented out

75+ -- if the ascii values are not wanted

76+ toJSON s = toJSON $ show s <> "\nascii only provided for visualisation:\n" <> stagetoAscii s

77+

78+ toEncoding s = toEncoding $ show s <> "\nascii only provided for visualisation:\n" <> stagetoAscii s

79+

80+instance FromJSON Stage

81+

82+instance S.Parsable Stage where

83+ parseParam t

84+ | t == "seed" || t == "Seed" = Right Seed

85+ | t == "sprout" || t == "Sprout" = Right Sprout

86+ | t == "seedling" || t == "Seedling" = Right Seedling

87+ | t == "adult" || t == "Adult" = Right Adult

88+ | t == "dead" || t == "Dead" = Right Dead

89+ | otherwise = Left t

90+

91+

92+-- Just for ToJSON for ilustration of stage

93+type ASCIIStage = String

94+

95+seedStr :: ASCIIStage

96+seedStr = "<>\n\

97+ \'''\n"

98+sproutStr :: ASCIIStage

99+sproutStr = " ..\n\

100+ \<|>\n\

101+ \''''\n"

102+seedlingStr :: ASCIIStage

103+seedlingStr = " `\\⁄o \n\

104+ \ v|/\n\

105+ \'´;'''\n"

106+adultStr :: ASCIIStage

107+adultStr = "*~(#)~\n\

108+ \ \\,Y,e\n\

109+ \ \\|/\n\

110+ \''+'\\''\n"

111+deadStr :: ASCIIStage

112+deadStr = " ,__:<\n\

113+ \'/'''''\n"

114+

115+-- Just used for ToJSON illustration of stages

116+stagetoAscii :: Stage -> ASCIIStage

117+stagetoAscii Seed = seedStr

118+stagetoAscii Sprout = sproutStr

119+stagetoAscii Seedling = seedlingStr

120+stagetoAscii Adult = adultStr

121+stagetoAscii Dead = deadStr

122+

123+-- used for update stage

124+next :: Stage -> Stage

125+next Seed = Sprout

126+next Sprout = Seedling

127+next Seedling = Adult

128+next s = s

129+

130+data Plant = Plant { name :: Text, species :: Text, stage :: Stage, waterings:: Integer } deriving (Show, Generic)

131+instance Tupleable Plant

132+instance ToJSON Plant

133+instance FromJSON Plant

134+

135+

136+main :: IO ()

137+main = do

138+ putStrLn "Connecting to plant farm"

139+ c <- dbConnection

140+ _ <- createSchema c

141+ putStrLn "Planting some plants"

142+ _ <- insertSampleData c

143+ let port = 8001

144+ putStrLn $ "Started Plant farm at " <> show port

145+ S.scotty port $ do

146+

147+ -- retrieve a plant by name

148+ S.get "/plant/:name" $ do

149+ n <- S.param "name"

150+ e <- liftIO $ getPlant c n

151+ p <- handleWebError e

152+ S.json p

153+

154+

155+ -- save a plant providing it as json data

156+ S.post "/plant" $ do

157+ pl <- S.jsonData :: S.ActionM Plant

158+ e <- liftIO $ savePlant c [pl]

159+ p <- handleWebError e

160+ S.json p

161+

162+ -- updating a plant providing it as json data

163+ S.put "/plant" $ do

164+ pl <- S.jsonData :: S.ActionM Plant

165+ e <- liftIO $ updatePlantFst c pl

166+ p <- handleWebError e

167+ S.json p

168+

169+ -- watering the plant having the provided name.

170+ -- This will water the plant and might let it progress to the next stage. It might also die.

171+ S.post "/plant/water/:name" $ do

172+ n <- S.param "name"

173+ e <- liftIO $ waterPlant c n

174+ p <- handleWebError e

175+ S.json p

176+

177+ -- retriving all the plants as json data

178+ S.get "/plants" $ do

179+ e <- liftIO $ getAllPlants c

180+ ps <- handleWebErrors e

181+ S.json ps

182+

183+ -- saving many plants at the same time

184+ S.post "/plants" $ do

185+ pl <- S.jsonData :: S.ActionM [Plant]

186+ e <- liftIO $ savePlant c pl

187+ p <- handleWebError e

188+ S.json p

189+

190+ -- deleting all plants at a specific stage

191+ S.delete "/plants?stage=:stage" $ do

192+ s <- S.param "stage"

193+ e <- liftIO $ deletePlantsByStage c s

194+ p <- handleWebError e

195+ S.json p

196+

197+ -- deleting all plants at a specific stage

198+ S.delete "/plants" $ do

199+ s <- S.param "name"

200+ e <- liftIO $ deletePlantByName c s

201+ p <- handleWebError e

202+ S.json p

203+

204+ -- deleting all dead plants

205+ S.delete "/plants/clear" $ do

206+ e <- liftIO $ clearDeadPlants c

207+ ps <- handleWebErrors e

208+ S.json ps

209+

210+handleWebError :: Either Err b -> S.ActionM b

211+handleWebError (Left e) = S.raise (TL.pack $ "An error occurred:\n" <> show e)

212+handleWebError (Right v) = pure v

213+

214+handleWebErrors :: [Either Err b] -> S.ActionM [b]

215+handleWebErrors e = do

216+ case lefts e of

217+ [] -> pure (rights e)

218+ l -> S.raise (TL.pack $ "Errors occurred:\n" <> concatMap ((<>"\n") . show) l)

219+

220+

221+-- | watering a plant and thereby possibly updating its stage

222+waterPlant :: DBConnection -> Text -> IO (Either Err Plant)

223+waterPlant db n = do

224+ p <- getPlant db n

225+ case p of

226+ Left e -> pure $ Left e

227+ Right v -> updateStage db $ v { waterings = waterings v + 1 }

228+

229+-- | used by 'waterPlant' updates the stage depending on random numbers

230+updateStage :: DBConnection -> Plant -> IO (Either Err Plant)

231+updateStage db p@(Plant _ _ Dead _ ) = do

232+ tmp <- updatePlantFst db p

233+ case tmp of

234+ Left e -> pure $ Left e

235+ Right _ -> pure $ Right p

236+updateStage db p = do

237+ res <- calculateStage p

238+ tmp <- updatePlantFst db res

239+ case tmp of

240+ Left e -> pure $ Left e

241+ Right _ -> pure $ Right res

242+ where calculateStage p' = do

243+ r1 <- R.randomRIO (1, 10) :: IO Integer

244+ let np = if r1 < waterings p' then p' { stage = next $ stage p', waterings = 0 } else p'

245+ r2 <- R.randomRIO (1, 20)

246+ pure $ if r2 < waterings np then np { stage = Dead, waterings = 0 } else np

247+

248+-- | deletes all plants with Stage = Dead

249+clearDeadPlants :: DBConnection -> IO [Either Err Plant]

250+clearDeadPlants db = do

251+ _ <- deletePlantsByStage db Dead

252+ getAllPlants db

253+

254+

255+-- ****************************

256+-- | *Database functions* :

257+-- ****************************

258+

259+

260+-- | Error type for passing. It is not very specific.

261+-- Just minimal and non optimal for this example.

262+data Err = NotSpecified | NotFound deriving (Show ,Generic)

263+

264+instance ToJSON Err

265+

266+-- | Just for convinience for passing around the SessionId

267+-- and the Connection

268+data DBConnection = DB SessionId Connection

269+

270+

271+-- | Getting plants by their name.\

272+-- Because plant has name as primary key \

273+-- we can assume will get at most one result. \

274+-- Alternatively we could return a list.

275+getPlant :: DBConnection -> Text -> IO (Either Err Plant)

276+getPlant db n = defaultHead (Left NotFound) <$> (

277+ get db

278+ ( Restrict -- Restrict can be thought of as similar to "WITH" in SQL

279+ (AttributeEqualityPredicate "name" (NakedAtomExpr (toAtom n))) -- This is the Predicate we are "restricting" our RelationalExprBase with

280+ (RelationVariable "plants" ())

281+ )

282+ :: IO [Either Err Plant] -- this is needed because our 'get' function is

283+ )

284+

285+defaultHead :: a -> [a] -> a

286+defaultHead d [] = d

287+defaultHead _ (x:_) = x

288+

289+-- | Getting all the plants

290+getAllPlants :: DBConnection -> IO [Either Err Plant]

291+getAllPlants db = get db (RelationVariable "plants" ())

292+

293+-- | Getting all the plants that satisfy the restrictions

294+getAllPlantsWith :: DBConnection -> Base.RestrictionPredicateExpr -> IO [Either Err Plant]

295+getAllPlantsWith db ex = get db (Restrict ex (RelationVariable "plants" ()))

296+

297+

298+-- | Saving a plant

299+savePlant :: (Traversable t) => DBConnection -> t Plant -> IO (Either Err ())

300+savePlant db sps = insert db sps "plants"

301+

302+-- | An alternative to update alone because due to updates

303+-- not being cached yet \

304+-- they have to be calculated every update. \

305+-- This seems like an alternative until caching is implemented.

306+updatePlantFst :: DBConnection -> Plant -> IO (Either Err ())

307+updatePlantFst db pln = do

308+ _ <- delete db pln ["name"] "plants"

309+ savePlant db [pln]

310+

311+-- | Updating a plant. Due to the way project 36 works, \

312+-- updates have to be executed every time.\

313+-- This is slow but won't be an issue soon because they will

314+-- be cached.\

315+-- But because of this project 36 can provide O(1) commits.

316+updatePlant :: DBConnection -> Plant -> IO (Either Err ())

317+updatePlant db sps = update

318+ db -- db connection

319+ sps -- plant value

320+ ["name"] -- the attributes to be updated by (in case of unique key)

321+ "plants" -- the relation we want to update on

322+

323+

324+-- | deleting all plants that have given name.

325+deletePlantByName :: DBConnection -> Text -> IO (Either Err ())

326+deletePlantByName db s = executeWithTransaction db $ Right $ Delete "plants" $ AttributeEqualityPredicate "name" (NakedAtomExpr (toAtom s))

327+

328+-- | deleting all plants that have given stage.

329+deletePlantsByStage :: DBConnection -> Stage -> IO (Either Err ())

330+deletePlantsByStage db s = executeWithTransaction db $ Right $ Delete "plants" $ AttributeEqualityPredicate "stage" (NakedAtomExpr (toAtom s))

331+

332+

333+-- | Inserting the schema into the DB

334+createSchema :: DBConnection -> IO ()

335+createSchema (DB sessionId conn) = do

336+ _ <- handleIOErrorsAndQuit $ mapM (executeDatabaseContextExpr sessionId conn) [

337+ toAddTypeExpr (Proxy :: Proxy Stage) -- Adds the Type Stage as data to the DB

338+ , toDefineExpr (Proxy :: Proxy Plant) "plants" -- Creates the plants relation

339+ , databaseContextExprForUniqueKey "plants" ["name"] -- Makes name of the plants relation a uniqe Key,

340+ -- Foreign Key restrictions are available too

341+ ]

342+ pure ()

343+

344+

345+-- | inserting some sample data

346+insertSampleData :: DBConnection -> IO (Either Err ())

347+insertSampleData (DB sid conn) = do

348+ insert (DB sid conn) [

349+ Plant "angu" "Caladenia angustata" Seed 0

350+ , Plant "thely" "Thelymitra alcockiae" Seed 0

351+ , Plant "monstera" "Araceae" Seed 0

352+ ] "plants"

353+

354+dbConnection :: IO DBConnection

355+dbConnection = do

356+ -- connect to the database

357+ let connInfo = InProcessConnectionInfo NoPersistence emptyNotificationCallback []

358+ -- The code below persists the data in a DB with the name "base". \\

359+-- let connInfo = InProcessConnectionInfo (CrashSafePersistence "base") emptyNotificationCallback [] \\

360+ -- In addition minimal persistance is available. \\

361+-- let connInfo = InProcessConnectionInfo (MinimalPersistence "base") emptyNotificationCallback []

362+ conn <- handleIOErrorAndQuit $ connectProjectM36 connInfo

363+ --create a database session at the default branch of the database

364+ sessionId <- handleIOErrorAndQuit $ createSessionAtHead conn defaultHeadName

365+ pure (DB sessionId conn)

366+

367+

368+-- | A polymorphic function to insert data (a traversable of data) into the DB

369+insert :: (Tupleable a, Traversable t) => DBConnection -> t a -> Base.RelVarName -> IO (Either Err ())

370+insert db rlv rlvName = executeWithTransaction db $ toInsertExpr rlv rlvName

371+

372+-- | A polymorphic function to update data in the DB.

373+-- An update in one funtion would take:

374+--

375+-- - SessionId

376+-- - Connection

377+-- - Tuplable a -- the Tuplable you want to update

378+-- - [AttributeName] -- the Attributes of the Tuplable you want to update those are of StringType

379+-- - RelVarName -- the name of the relation

380+--

381+-- With that you can via 'toUpdateExpr' create a 'DatabaseContextExpr' to be executed. \\

382+-- For inserting its very similarly done with 'toInsertExpr'.

383+update :: (Tupleable a) => DBConnection -> a -> [AttributeName]-> Base.RelVarName -> IO (Either Err ())

384+update db rlv attr rlvName = executeWithTransaction db $ toUpdateExpr rlvName attr rlv

385+

386+-- | A polymorphic function to delete data in the DB

387+delete :: (Tupleable a) => DBConnection -> a -> [AttributeName]-> Base.RelVarName -> IO (Either Err ())

388+delete db rlv attr rlvName = executeWithTransaction db $ toDeleteExpr rlvName attr rlv

389+

390+-- | A convenience function to make executing DBContextExpr with commiting simpler. \\

391+-- In particular for expr that just insert, delete and update.

392+-- Therefor ultimately return Either _ ()

393+executeWithTransaction :: DBConnection -> Either RelationalError DatabaseContextExpr -> IO (Either Err ())

394+executeWithTransaction (DB sid conn) expr = do

395+ iEx <- handleError expr

396+ case iEx of

397+ Left e -> pure $ Left e

398+ Right v -> handleIOError $ withTransaction sid conn (executeDatabaseContextExpr sid conn v) (commit sid conn)

399+

400+-- | A polymorphic function to get data (a list of data and possibly errors) from the DB

401+get :: Tupleable b => DBConnection -> Base.RelationalExpr -> IO [Either Err b]

402+get (DB sessionId conn) q = do

403+ eRel <- executeRelationalExpr sessionId conn q

404+ e <- handleError eRel

405+ case e of

406+ Left err -> pure [Left err]

407+ Right pRel -> do

408+ ws <- Relation.toList pRel

409+ mapM (handleError . fromTuple) ws

410+

411+-- | for closing the DB connection.

412+-- Not really needed when using in-memory DB

413+closeConn :: DBConnection -> IO ()

414+closeConn (DB _ conn) = close conn

415+

416+

417+-- | Error handling is heavily inspired by 'blog.hs' the blog example \\

418+-- by (agentm)[https://github.com/agentm] (https://github.com/agentm/project-m36, commit: f8432522adaafeae7c32bc2b8b6cb09c00396fc6). \\

419+-- As stated there, your application should have proper error handling.

420+handleIOErrorAndQuit :: Show e => IO (Either e a) -> IO a

421+handleIOErrorAndQuit m = do

422+ v <- m

423+ handleErrorAndQuit v

424+

425+handleError :: Show e => Either e a -> IO (Either Err a)

426+handleError eErr = case eErr of

427+ Left err -> print err $> Left NotSpecified

428+ Right v -> pure $ Right v

429+

430+handleIOError :: Show e => IO (Either e a) -> IO (Either Err a)

431+handleIOError m = do

432+ v <- m

433+ handleError v

434+

435+handleErrorAndQuit :: Show e => Either e a -> IO a

436+handleErrorAndQuit eErr = case eErr of

437+ Left err -> print err >> error "Quit."

438+ Right v -> pure v

439+

440+handleIOErrorsAndQuit :: Show e => IO [Either e a] -> IO [a]

441+handleIOErrorsAndQuit m = do

442+ eErrs <- m

443+ case lefts eErrs of

444+ [] -> pure (rights eErrs)

445+ err:_ -> handleErrorAndQuit (Left err)

446+

examples/SimpleClient.hs+1−1

@@ -6,7 +6,7 @@ import Data.Text.IO as TIO

66main :: IO ()

77main = do

88 -- 1. create a ConnectionInfo

9− let connInfo = RemoteProcessConnectionInfo "mytestdb" (createNodeId "127.0.0.1" defaultServerPort) emptyNotificationCallback

9+ let connInfo = RemoteConnectionInfo "mytestdb" "127.0.0.1" (show defaultServerPort) emptyNotificationCallback

1010 -- 2. conncted to the remote database

1111 eConn <- connectProjectM36 connInfo

1212 case eConn of

examples/blog.hs+4−3

@@ -1,5 +1,5 @@

11-- a simple example of a blog schema

2−{-# LANGUAGE DeriveAnyClass, DeriveGeneric, OverloadedStrings, CPP #-}

2+{-# LANGUAGE DeriveAnyClass, DeriveGeneric, OverloadedStrings, CPP, DerivingVia #-}

44import ProjectM36.Client

55import ProjectM36.Base

@@ -10,7 +10,6 @@ import ProjectM36.Tuple (atomForAttributeName)

1010

1111import Data.Either

1212import GHC.Generics

13−import Data.Binary

1413import qualified Data.Text as T

1514import qualified Data.Text.Lazy as TL

1615import Data.Time.Clock

@@ -22,6 +21,7 @@ import Data.Monoid

2221#endif

2322import Data.List

2423import Control.Monad (when, forM_)

24+import Codec.Winery

2525

2626import Web.Scotty as S

2727import Text.Blaze.Html5 (h1, h2, h3, p, form, input, (!), toHtml, Html, a, toValue, hr, textarea)

@@ -52,7 +52,8 @@ data Comment = Comment {

5252instance Tupleable Comment

5353

5454data Category = Food | Cats | Photos | Other T.Text -- note that this data type could not be represented by an "enumeration" as found in SQL databases

55− deriving (Atomable, Eq, Show, NFData, Binary, Generic) -- derive Atomable so that values of this type can be stored as a database value

55+ deriving (Atomable, Eq, Show, NFData, Generic) -- derive Atomable so that values of this type can be stored as a database value

56+ deriving Serialise via WineryVariant Category -- derive Serialisable to be able to transmit this data remotely

5657

5758-- add some short-hand error handling- your application should have proper handling

5859handleIOError :: Show e => IO (Either e a) -> IO a

examples/hair.hs+4−3

@@ -1,16 +1,17 @@

1−{-# LANGUAGE DeriveGeneric, DeriveAnyClass, OverloadedStrings #-}

1+{-# LANGUAGE DeriveGeneric, DeriveAnyClass, OverloadedStrings, DerivingVia #-}

22import ProjectM36.Client

33import ProjectM36.Relation.Show.Term

44import GHC.Generics

55import Data.Text

6−import Data.Binary

76import Control.DeepSeq

87import qualified Data.Map as M

98import qualified Data.Text.IO as TIO

109import Data.Proxy

10+import Codec.Winery

1111

1212data Hair = Bald | Brown | Blond | OtherColor Text

13− deriving (Generic, Show, Eq, Binary, NFData, Atomable)

13+ deriving (Generic, Show, Eq, NFData, Atomable)

14+ deriving Serialise via WineryVariant Hair

1415

1516main :: IO ()

1617main = do

examples/out_of_the_tarpit.hs+11−7

@@ -1,5 +1,5 @@

11-- the Out-of-the-Tarpit example in Haskell and Project:M36

2−{-# LANGUAGE DeriveAnyClass, DeriveGeneric, OverloadedStrings #-}

2+{-# LANGUAGE DeriveAnyClass, DeriveGeneric, OverloadedStrings, DerivingVia #-}

33import ProjectM36.Client

44import ProjectM36.DataTypes.Primitive

55import ProjectM36.Tupleable

@@ -7,11 +7,11 @@ import ProjectM36.Relation

77import ProjectM36.Error

88import Data.Either

99import GHC.Generics

10−import Data.Binary

1110import Control.DeepSeq

1211import qualified Data.Text as T

1312import Data.Time.Calendar

1413import Data.Proxy

14+import Codec.Winery

1515

1616--create various database value (atom) types

1717type Price = Double

@@ -21,16 +21,20 @@ type Name = T.Text

2121type Address = T.Text

2222

2323data RoomType = Kitchen | Bathroom | LivingRoom

24− deriving (Generic, Atomable, Eq, Show, Binary, NFData)

24+ deriving (Generic, Atomable, Eq, Show, NFData)

25+ deriving Serialise via WineryVariant RoomType

2526

2627data PriceBand = Low | Medium | High | Premium

27− deriving (Generic, Atomable, Eq, Show, Binary, NFData)

28+ deriving (Generic, Atomable, Eq, Show, NFData)

29+ deriving Serialise via WineryVariant PriceBand

2830

2931data AreaCode = City | Suburban | Rural

30− deriving (Generic, Atomable, Eq, Show, Binary, NFData)

32+ deriving (Generic, Atomable, Eq, Show, NFData)

33+ deriving Serialise via WineryVariant AreaCode

3134

3235data SpeedBand = VeryFastBand | FastBand | MediumBand | SlowBand

33− deriving (Generic, Atomable, Eq, Show, Binary, NFData)

36+ deriving (Generic, Atomable, Eq, Show, NFData)

37+ deriving Serialise via WineryVariant SpeedBand

3438

3539main :: IO ()

3640main = do

@@ -257,4 +261,4 @@ handleIOErrors m = do

257261 [] -> pure (rights eErrs)

258262 errs -> handleError (Left (someErrors errs))

259263

260−

264+

examples/out_of_the_tarpit.tutd+4−4

@@ -3,9 +3,9 @@

33data Address = Address Text

44data Agent = Agent Text

55data Name = Name Text

6−data Price = Price Double

6+data Price = Price Integer --dollars

77data RoomType = Kitchen | Bathroom | LivingRoom

8−data PriceBand = Low | Medium | High | Premium

8+data PriceBand = Low | Med | High | Premium

99data AreaCode = City | Suburban | Rural

1010data SpeedBand = VeryFast | Fast | Medium | Slow

1111

@@ -57,9 +57,9 @@ constraint noOffersAfterSale (offer join decision where ^dayEarlierThan(@offerDa

5757--1. identify offerPrices > 2000 (arbitrarily-chosen high price band which is not specified in the paper)

5858--2. remove the properties which have been sold

5959--3. group and count sub-relation and restrict by greater than 50

60−constraint noMoreThan50PremiumProperties ((((property where ^gt(offerPrice,2000.0)) minus ((property join decision){address,agent,dateRegistered,photo,price})) group ({} as x) : {z:=gt(count(@x),50)}) {z}){} equals false

60+constraint noMoreThan50PremiumProperties ((((property where ^gt(@price,Price 2000)) minus ((property join decision){address,agent,dateRegistered,photo,price})) group ({} as x) : {z:=gt(count(@x),50)}) {z}){} equals false

6161

62−constraint noBidderCanMakeMoreThan10BidsOnAProperty (((offer group ({all but bidderAddress} as bidder)) : {bidCount:=gt(count(@bidder),10)}) where ^gt(bidCount,10)) {} equals false

62+constraint noBidderCanMakeMoreThan10BidsOnAProperty (((offer group ({all but bidderAddress} as bidder)) : {bidCount:=gt(count(@bidder),10)}) where ^gt(@bidCount,10)) {} equals false

6363

6464-- sample data

6565

jupyter/TutorialD Notebook Walkthrough.ipynb+1−1

@@ -38,7 +38,7 @@

3838 }

3939 ],

4040 "source": [

41− ":importexample date"

41+ ":importexample cjdate"

4242 ]

4343 },

4444 {

nix/sources.jsonnew file+50

@@ -0,0 +1,50 @@

1+{

2+ "curryer": {

3+ "branch": "master",

4+ "description": "Fast Haskell RPC",

5+ "homepage": null,

6+ "owner": "agentm",

7+ "repo": "curryer",

8+ "rev": "74ecaac619ad1165a4517d5c0f4e530493bda130",

9+ "sha256": "1izdvzj00k0y76ixm7dfgvq2fzphb8h4nzqgwkl3p0bg0806rsn1",

10+ "type": "tarball",

11+ "url": "https://github.com/agentm/curryer/archive/74ecaac619ad1165a4517d5c0f4e530493bda130.tar.gz",

12+ "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"

13+ },

14+ "niv": {

15+ "branch": "master",

16+ "description": "Easy dependency management for Nix projects",

17+ "homepage": "https://github.com/nmattia/niv",

18+ "owner": "nmattia",

19+ "repo": "niv",

20+ "rev": "1819632b5823e0527da28ad82fecd6be5136c1e9",

21+ "sha256": "08jz17756qchq0zrqmapcm33nr4ms9f630mycc06i6zkfwl5yh5i",

22+ "type": "tarball",

23+ "url": "https://github.com/nmattia/niv/archive/1819632b5823e0527da28ad82fecd6be5136c1e9.tar.gz",

24+ "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"

25+ },

26+ "nixpkgs": {

27+ "branch": "master",

28+ "description": "Nix Packages collection",

29+ "homepage": "",

30+ "owner": "NixOS",

31+ "repo": "nixpkgs",

32+ "rev": "429c23aad0fce9ef38b0e60d55d7459c19d53ddc",

33+ "sha256": "1nj8sh1fnxp07jdlvjkijwfd1pnsi2zj0ivy7a0dhx02g63byhg3",

34+ "type": "tarball",

35+ "url": "https://github.com/NixOS/nixpkgs/archive/429c23aad0fce9ef38b0e60d55d7459c19d53ddc.tar.gz",

36+ "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"

37+ },

38+ "streamly": {

39+ "branch": "ac3af8749194f1788704dda8667d0b3807075cc2",

40+ "description": "Beautiful Streaming, Concurrent and Reactive Composition (Haskell)",

41+ "homepage": "https://hackage.haskell.org/package/streamly",

42+ "owner": "composewell",

43+ "repo": "streamly",

44+ "rev": "ac3af8749194f1788704dda8667d0b3807075cc2",

45+ "sha256": "04d8fk654vawdfs0dfidmq2awwgwi8x44iv8r7vqz70zkcsd5fij",

46+ "type": "tarball",

47+ "url": "https://github.com/composewell/streamly/archive/ac3af8749194f1788704dda8667d0b3807075cc2.tar.gz",

48+ "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"

49+ }

50+}

nix/sources.nixnew file+171

@@ -0,0 +1,171 @@

1+# This file has been generated by Niv.

3+let

5+ #

6+ # The fetchers. fetch_<type> fetches specs of type <type>.

7+ #

9+ fetch_file = pkgs: name: spec:

10+ let

11+ name' = sanitizeName name + "-src";

12+ in

13+ if spec.builtin or true then

14+ builtins_fetchurl { inherit (spec) url sha256; name = name'; }

15+ else

16+ pkgs.fetchurl { inherit (spec) url sha256; name = name'; };

17+

18+ fetch_tarball = pkgs: name: spec:

19+ let

20+ name' = sanitizeName name + "-src";

21+ in

22+ if spec.builtin or true then

23+ builtins_fetchTarball { name = name'; inherit (spec) url sha256; }

24+ else

25+ pkgs.fetchzip { name = name'; inherit (spec) url sha256; };

26+

27+ fetch_git = name: spec:

28+ let

29+ ref =

30+ if spec ? ref then spec.ref else

31+ if spec ? branch then "refs/heads/${spec.branch}" else

32+ if spec ? tag then "refs/tags/${spec.tag}" else

33+ abort "In git source '${name}': Please specify `ref`, `tag` or `branch`!";

34+ in

35+ builtins.fetchGit { url = spec.repo; inherit (spec) rev; inherit ref; };

36+

37+ fetch_local = spec: spec.path;

38+

39+ fetch_builtin-tarball = name: throw

40+ ''[${name}] The niv type "builtin-tarball" is deprecated. You should instead use `builtin = true`.

41+ $ niv modify ${name} -a type=tarball -a builtin=true'';

42+

43+ fetch_builtin-url = name: throw

44+ ''[${name}] The niv type "builtin-url" will soon be deprecated. You should instead use `builtin = true`.

45+ $ niv modify ${name} -a type=file -a builtin=true'';

46+

47+ #

48+ # Various helpers

49+ #

50+

51+ # https://github.com/NixOS/nixpkgs/pull/83241/files#diff-c6f540a4f3bfa4b0e8b6bafd4cd54e8bR695

52+ sanitizeName = name:

53+ (

54+ concatMapStrings (s: if builtins.isList s then "-" else s)

55+ (

56+ builtins.split "[^[:alnum:]+._?=-]+"

57+ ((x: builtins.elemAt (builtins.match "\\.*(.*)" x) 0) name)

58+ )

59+ );

60+

61+ # The set of packages used when specs are fetched using non-builtins.

62+ mkPkgs = sources: system:

63+ let

64+ sourcesNixpkgs =

65+ import (builtins_fetchTarball { inherit (sources.nixpkgs) url sha256; }) { inherit system; };

66+ hasNixpkgsPath = builtins.any (x: x.prefix == "nixpkgs") builtins.nixPath;

67+ hasThisAsNixpkgsPath = <nixpkgs> == ./.;

68+ in

69+ if builtins.hasAttr "nixpkgs" sources

70+ then sourcesNixpkgs

71+ else if hasNixpkgsPath && ! hasThisAsNixpkgsPath then

72+ import <nixpkgs> {}

73+ else

74+ abort

75+ ''

76+ Please specify either <nixpkgs> (through -I or NIX_PATH=nixpkgs=...) or

77+ add a package called "nixpkgs" to your sources.json.

78+ '';

79+

80+ # The actual fetching function.

81+ fetch = pkgs: name: spec:

82+

83+ if ! builtins.hasAttr "type" spec then

84+ abort "ERROR: niv spec ${name} does not have a 'type' attribute"

85+ else if spec.type == "file" then fetch_file pkgs name spec

86+ else if spec.type == "tarball" then fetch_tarball pkgs name spec

87+ else if spec.type == "git" then fetch_git name spec

88+ else if spec.type == "local" then fetch_local spec

89+ else if spec.type == "builtin-tarball" then fetch_builtin-tarball name

90+ else if spec.type == "builtin-url" then fetch_builtin-url name

91+ else

92+ abort "ERROR: niv spec ${name} has unknown type ${builtins.toJSON spec.type}";

93+

94+ # If the environment variable NIV_OVERRIDE_${name} is set, then use

95+ # the path directly as opposed to the fetched source.

96+ replace = name: drv:

97+ let

98+ saneName = stringAsChars (c: if isNull (builtins.match "[a-zA-Z0-9]" c) then "_" else c) name;

99+ ersatz = builtins.getEnv "NIV_OVERRIDE_${saneName}";

100+ in

101+ if ersatz == "" then drv else ersatz;

102+

103+ # Ports of functions for older nix versions

104+

105+ # a Nix version of mapAttrs if the built-in doesn't exist

106+ mapAttrs = builtins.mapAttrs or (

107+ f: set: with builtins;

108+ listToAttrs (map (attr: { name = attr; value = f attr set.${attr}; }) (attrNames set))

109+ );

110+

111+ # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/lists.nix#L295

112+ range = first: last: if first > last then [] else builtins.genList (n: first + n) (last - first + 1);

113+

114+ # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L257

115+ stringToCharacters = s: map (p: builtins.substring p 1 s) (range 0 (builtins.stringLength s - 1));

116+

117+ # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L269

118+ stringAsChars = f: s: concatStrings (map f (stringToCharacters s));

119+ concatMapStrings = f: list: concatStrings (map f list);

120+ concatStrings = builtins.concatStringsSep "";

121+

122+ # https://github.com/NixOS/nixpkgs/blob/8a9f58a375c401b96da862d969f66429def1d118/lib/attrsets.nix#L331

123+ optionalAttrs = cond: as: if cond then as else {};

124+

125+ # fetchTarball version that is compatible between all the versions of Nix

126+ builtins_fetchTarball = { url, name ? null, sha256 }@attrs:

127+ let

128+ inherit (builtins) lessThan nixVersion fetchTarball;

129+ in

130+ if lessThan nixVersion "1.12" then

131+ fetchTarball ({ inherit url; } // (optionalAttrs (!isNull name) { inherit name; }))

132+ else

133+ fetchTarball attrs;

134+

135+ # fetchurl version that is compatible between all the versions of Nix

136+ builtins_fetchurl = { url, name ? null, sha256 }@attrs:

137+ let

138+ inherit (builtins) lessThan nixVersion fetchurl;

139+ in

140+ if lessThan nixVersion "1.12" then

141+ fetchurl ({ inherit url; } // (optionalAttrs (!isNull name) { inherit name; }))

142+ else

143+ fetchurl attrs;

144+

145+ # Create the final "sources" from the config

146+ mkSources = config:

147+ mapAttrs (

148+ name: spec:

149+ if builtins.hasAttr "outPath" spec

150+ then abort

151+ "The values in sources.json should not have an 'outPath' attribute"

152+ else

153+ spec // { outPath = replace name (fetch config.pkgs name spec); }

154+ ) config.sources;

155+

156+ # The "config" used by the fetchers

157+ mkConfig =

158+ { sourcesFile ? if builtins.pathExists ./sources.json then ./sources.json else null

159+ , sources ? if isNull sourcesFile then {} else builtins.fromJSON (builtins.readFile sourcesFile)

160+ , system ? builtins.currentSystem

161+ , pkgs ? mkPkgs sources system

162+ }: rec {

163+ # The sources, i.e. the attribute set of spec name to spec

164+ inherit sources;

165+

166+ # The "pkgs" (evaluated nixpkgs) to use for e.g. non-builtin fetchers

167+ inherit pkgs;

168+ };

169+

170+in

171+mkSources (mkConfig {}) // { __functor = _: settings: mkSources (mkConfig settings); }

project-m36.cabal+134−162

@@ -1,6 +1,8 @@

1+Cabal-Version: 2.2

12Name: project-m36

2−Version: 0.8

3−License: PublicDomain

3+Version: 0.9.3

4+License: MIT

5+--note that this license specification is erroneous and only labeled MIT to appease hackage which does not recognize public domain packages in cabal >2.2- Project:M36 is dedicated to the public domain

46Build-Type: Simple

57Homepage: https://github.com/agentm/project-m36

68Bug-Reports: https://github.com/agentm/project-m36/issues

@@ -8,7 +10,6 @@ Author: AgentM

810Stability: experimental

911Category: Relational Algebra

1012Maintainer: agentm@themactionfaction.com

11−Cabal-Version: >= 1.10

1213Synopsis: Relational Algebra Engine

1314Description: A relational algebra engine which can be used to persist and query Haskell data types.

1415Extra-Source-Files: Changelog.markdown README.markdown

@@ -34,9 +35,9 @@ Flag haskell-scripting

3435 Default: True

3536

3637Library

37− Build-Depends: base>=4.8 && < 4.14, ghc-paths, mtl, containers, unordered-containers, hashable, haskeline, directory, MonadRandom, random-shuffle, uuid >= 1.3.12, cassava >= 0.4.5.1 && < 0.6, text, bytestring, deepseq, deepseq-generics, vector, parallel, monad-parallel, exceptions, transformers, gnuplot, binary, filepath, zlib, directory, vector-binary-instances, temporary, stm, time, hashable-time, old-locale, rset, attoparsec, either, base64-bytestring, data-interval, extended-reals, network-transport, aeson >= 1.1, path-pieces, conduit, resourcet, http-api-data, semigroups, QuickCheck, quickcheck-instances, distributed-process-client-server >= 0.2.3, distributed-process >= 0.7.4, distributed-process-extras >= 0.3.2, distributed-process-async >= 0.2.4.1, network-transport-tcp >= 0.6.0, network-transport, list-t, stm-containers >= 0.2.15, foldl, optparse-applicative, Glob, cryptohash-sha256, text-manipulate >= 0.2.0.1 && < 0.3

38+ Build-Depends: base>=4.8 && < 4.15, ghc-paths, mtl, containers, unordered-containers, hashable, haskeline, directory, MonadRandom, random-shuffle, uuid >= 1.3.12, cassava >= 0.4.5.1 && < 0.6, text, bytestring, deepseq, deepseq-generics, vector, parallel, monad-parallel, exceptions, transformers, gnuplot, filepath, zlib, directory, temporary, stm, time, hashable-time, old-locale, rset, attoparsec, either, base64-bytestring, data-interval, extended-reals, aeson >= 1.1, path-pieces, conduit, resourcet, http-api-data, semigroups, QuickCheck, quickcheck-instances, list-t, stm-containers >= 0.2.15, foldl, optparse-applicative, Glob, cryptohash-sha256, text-manipulate >= 0.2.0.1 && < 0.4, winery, curryer-rpc, network, async, vector-instances, recursion-schemes, streamly >= 0.7.2, convertible

3839 if flag(haskell-scripting)

39− Build-Depends: ghc >= 8.2 && < 8.9

40+ Build-Depends: ghc >= 8.2 && < 8.11

4041 CPP-Options: -DPM36_HASKELL_SCRIPTING

4142 if impl(ghc>= 8) && flag(haskell-scripting)

4243 build-depends:

@@ -51,6 +52,8 @@ Library

5152 ProjectM36.TransactionGraph.Merge,

5253 ProjectM36.TransGraphRelationalExpression,

5354 ProjectM36.Base,

55+ ProjectM36.Serialise.Base,

56+ ProjectM36.Serialise.Error,

5457 ProjectM36.DataFrame,

5558 ProjectM36.Attribute,

5659 ProjectM36.AttributeNames,

@@ -60,6 +63,7 @@ Library

6063 ProjectM36.AtomFunction,

6164 ProjectM36.AtomFunctionError,

6265 ProjectM36.ScriptSession,

66+ ProjectM36.Shortcuts,

6367 ProjectM36.DatabaseContextFunction,

6468 ProjectM36.DatabaseContextFunctionError,

6569 ProjectM36.DatabaseContextFunctionUtils,

@@ -110,6 +114,10 @@ Library

110114 ProjectM36.Server.EntryPoints,

111115 ProjectM36.Server.ParseArgs,

112116 ProjectM36.Server.RemoteCallTypes,

117+ ProjectM36.Serialise.AtomFunctionError,

118+ ProjectM36.Serialise.DataFrame,

119+ ProjectM36.Serialise.DatabaseContextFunctionError,

120+ ProjectM36.Serialise.IsomorphicSchema,

113121 ProjectM36.Session,

114122 ProjectM36.Sessions,

115123 ProjectM36.Transaction.Persist,

@@ -128,19 +136,19 @@ Library

128136 Other-Modules: ProjectM36.Win32Handle

129137 else

130138 --219- too many exported symbols under Windows and GHC 8.4

131− GHC-Options: -rdynamic

139+ GHC-Options: -rdynamic -fexternal-interpreter

132140 C-sources: cbits/DirectoryFsync.c, cbits/darwin_statfs.c

133141 Build-Depends: unix

134142 CC-Options: -fPIC

135143 Hs-Source-Dirs: ./src/lib

136144 Default-Language: Haskell2010

137145 Default-Extensions: OverloadedStrings, CPP

138− if !flag(stack)

146+ if !flag(stack)

139147 Build-Depends: deferred-folds

140148

141149Executable tutd

142150 if flag(haskell-scripting)

143− Build-Depends: ghc >= 8.2 && < 8.9

151+ Build-Depends: ghc >= 8.2 && < 8.11

144152 Build-Depends: base >=4.8 && <5.0,

145153 ghc-paths,

146154 project-m36,

@@ -155,13 +163,11 @@ Executable tutd

155163 MonadRandom, MonadRandom,

156164 vector,

157165 text,

158− vector-binary-instances,

159166 time,

160167 hashable-time,

161168 bytestring,

162169 stm,

163170 deepseq,

164− binary,

165171 data-interval,

166172 parallel,

167173 cassava,

@@ -169,7 +175,7 @@ Executable tutd

169175 directory,

170176 filepath,

171177 temporary,

172− megaparsec >= 5.2.0 && < 9,

178+ megaparsec >= 5.2.0 && < 10,

173179 haskeline,

174180 random, MonadRandom,

175181 base64-bytestring,

@@ -177,7 +183,15 @@ Executable tutd

177183 attoparsec,

178184 stm-containers >= 1.0.0,

179185 list-t,

180− parser-combinators

186+ parser-combinators,

187+ curryer-rpc,

188+ prettyprinter,

189+ cryptohash-sha256,

190+ --due to decode signature change

191+ base16-bytestring >= 1.0.0.0,

192+ http-conduit,

193+ modern-uri,

194+ http-types

181195 Other-Modules: TutorialD.Interpreter,

182196 TutorialD.Interpreter.Base,

183197 TutorialD.Interpreter.DatabaseContextExpr,

@@ -196,6 +210,7 @@ Executable tutd

196210 TutorialD.Interpreter.SchemaOperator,

197211 TutorialD.Interpreter.TransGraphRelationalOperator,

198212 TutorialD.Interpreter.SchemaOperator

213+ TutorialD.Printer

199214 main-is: TutorialD/tutd.hs

200215 CC-Options: -fPIC

201216 GHC-Options: -Wall -threaded

@@ -205,12 +220,11 @@ Executable tutd

205220

206221Executable project-m36-server

207222 if flag(haskell-scripting)

208− Build-Depends: ghc >= 8.2 && < 8.9

223+ Build-Depends: ghc >= 8.2 && < 8.11

209224 Build-Depends: base,

210225 ghc-paths,

211− project-m36,

212− binary,

213226 transformers,

227+ project-m36,

214228 temporary,

215229 data-interval,

216230 deepseq,

@@ -223,7 +237,6 @@ Executable project-m36-server

223237 optparse-applicative,

224238 hashable-time,

225239 time,

226− vector-binary-instances,

227240 text,

228241 deepseq-generics,

229242 mtl,

@@ -245,7 +258,7 @@ Executable project-m36-server

245258Executable bigrel

246259 Default-Language: Haskell2010

247260 Default-Extensions: OverloadedStrings

248− Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, vector-binary-instances, time, hashable-time, bytestring, uuid, stm, deepseq, deepseq-generics, binary, parallel, cassava, attoparsec, gnuplot, directory, temporary, haskeline, megaparsec, text, base64-bytestring, data-interval, filepath, optparse-applicative, stm-containers, list-t, ghc, ghc-paths, transformers, project-m36, random, MonadRandom, semigroups, parser-combinators

261+ Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, time, hashable-time, bytestring, uuid, stm, deepseq, deepseq-generics, parallel, cassava, attoparsec, gnuplot, directory, temporary, haskeline, megaparsec, text, base64-bytestring, data-interval, filepath, optparse-applicative, stm-containers, list-t, ghc, ghc-paths, transformers, project-m36, random, MonadRandom, semigroups, parser-combinators

249262 Other-Modules: TutorialD.Interpreter.Base,

250263 TutorialD.Interpreter.DatabaseContextExpr,

251264 TutorialD.Interpreter.RelationalExpr,

@@ -256,6 +269,13 @@ Executable bigrel

256269 if flag(profiler)

257270 GHC-Prof-Options: -fprof-auto -rtsopts -threaded -Wall

258271

272+Common commontest

273+ Default-Language: Haskell2010

274+ Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, time, hashable-time, bytestring, uuid, stm, deepseq, deepseq-generics,parallel, cassava, attoparsec, gnuplot, directory, temporary, haskeline, megaparsec, text, base64-bytestring, data-interval, filepath, transformers, stm-containers, list-t, websockets, optparse-applicative, network, aeson, project-m36, random, MonadRandom, semigroups, parser-combinators, winery, curryer-rpc, prettyprinter, base64-bytestring, modern-uri, http-types, http-conduit, base16-bytestring,cryptohash-sha256

275+ Default-Extensions: OverloadedStrings

276+ GHC-Options: -Wall -threaded

277+ Hs-Source-Dirs: test, src/bin

278+

259279Benchmark basic-benchmark

260280 Default-Language: Haskell2010

261281 Default-Extensions: OverloadedStrings

@@ -267,247 +287,202 @@ Benchmark basic-benchmark

267287 if flag(profiler)

268288 GHC-Prof-Options: -fprof-auto -rtsopts -threaded -Wall

269289

290+--benchmark inserts, updates, deletes for a basic use-case to shake out any space leaks

291+Benchmark update-exprs

292+ Default-Language: Haskell2010

293+ Default-Extensions: OverloadedStrings

294+ Build-Depends: base, criterion, project-m36, text, winery

295+ Main-Is: benchmark/Server.hs

296+ Type: exitcode-stdio-1.0

297+ GHC-Options: -Wall -threaded -rtsopts

298+ HS-Source-Dirs: ./src/bin

299+ if flag(profiler)

300+ GHC-Prof-Options: -fprof-auto -rtsopts -threaded -Wall -fexternal-interpreter

301+

270302Test-Suite test-tutoriald

271− Default-Language: Haskell2010

272− Default-Extensions: OverloadedStrings

303+ import: commontest

273304 type: exitcode-stdio-1.0

274− main-is: test/TutorialD/Interpreter.hs

275− Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, vector-binary-instances, time, hashable-time, bytestring, uuid, stm, deepseq, deepseq-generics, binary, parallel, cassava, attoparsec, gnuplot, directory, temporary, haskeline, megaparsec, text, base64-bytestring, data-interval, filepath, stm-containers, list-t, project-m36, random, MonadRandom, semigroups, parser-combinators

276− Other-Modules: TutorialD.Interpreter, TutorialD.Interpreter.Base, TutorialD.Interpreter.Export.Base, TutorialD.Interpreter.Export.CSV, TutorialD.Interpreter.Import.Base, TutorialD.Interpreter.Import.CSV, TutorialD.Interpreter.Import.TutorialD, TutorialD.Interpreter.RODatabaseContextOperator, TutorialD.Interpreter.RelationalExpr, TutorialD.Interpreter.TransactionGraphOperator, TutorialD.Interpreter.Types, TutorialD.Interpreter.DatabaseContextExpr, TutorialD.Interpreter.InformationOperator, TutorialD.Interpreter.Import.BasicExamples, TutorialD.Interpreter.DatabaseContextIOOperator, TutorialD.Interpreter.TestBase, TutorialD.Interpreter.TransGraphRelationalOperator, TutorialD.Interpreter.SchemaOperator

277− GHC-Options: -Wall -threaded

278− Hs-Source-Dirs: ./src/bin, ., test

305+ main-is: TutorialD/InterpreterTest.hs

306+ Other-Modules: TutorialD.Interpreter, TutorialD.Interpreter.Base, TutorialD.Interpreter.Export.Base, TutorialD.Interpreter.Export.CSV, TutorialD.Interpreter.Import.Base, TutorialD.Interpreter.Import.CSV, TutorialD.Interpreter.Import.TutorialD, TutorialD.Interpreter.RODatabaseContextOperator, TutorialD.Interpreter.RelationalExpr, TutorialD.Interpreter.TransactionGraphOperator, TutorialD.Interpreter.Types, TutorialD.Interpreter.DatabaseContextExpr, TutorialD.Interpreter.InformationOperator, TutorialD.Interpreter.Import.BasicExamples, TutorialD.Interpreter.DatabaseContextIOOperator, TutorialD.Interpreter.TestBase, TutorialD.Interpreter.TransGraphRelationalOperator, TutorialD.Interpreter.SchemaOperator, TutorialD.Printer

307+ Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, time, hashable-time, bytestring, uuid, stm, deepseq, deepseq-generics, parallel, cassava, attoparsec, gnuplot, directory, temporary, haskeline, megaparsec, text, base64-bytestring, data-interval, filepath, stm-containers, list-t, project-m36, random, MonadRandom, semigroups, parser-combinators, prettyprinter

279308

280309Test-Suite test-tutoriald-atomfunctionscript

281− Default-Language: Haskell2010

282− Default-Extensions: OverloadedStrings

310+ import: commontest

283311 type: exitcode-stdio-1.0

284− Other-Modules: TutorialD.Interpreter, TutorialD.Interpreter.Base, TutorialD.Interpreter.DatabaseContextExpr, TutorialD.Interpreter.DatabaseContextIOOperator, TutorialD.Interpreter.Export.Base, TutorialD.Interpreter.Export.CSV, TutorialD.Interpreter.Import.Base, TutorialD.Interpreter.Import.BasicExamples, TutorialD.Interpreter.Import.CSV, TutorialD.Interpreter.Import.TutorialD, TutorialD.Interpreter.InformationOperator, TutorialD.Interpreter.RODatabaseContextOperator, TutorialD.Interpreter.RelationalExpr, TutorialD.Interpreter.TestBase, TutorialD.Interpreter.TransGraphRelationalOperator, TutorialD.Interpreter.TransactionGraphOperator, TutorialD.Interpreter.Types, TutorialD.Interpreter.SchemaOperator

285− main-is: test/TutorialD/Interpreter/AtomFunctionScript.hs

286− Build-Depends: base, HUnit, project-m36, uuid, containers, megaparsec, text, vector, directory, bytestring, mtl, haskeline, random, MonadRandom, semigroups, time, parser-combinators

287− GHC-Options: -Wall -threaded

288− Hs-Source-Dirs: ./src/bin, ./test, .

312+ Other-Modules: TutorialD.Interpreter, TutorialD.Interpreter.Base, TutorialD.Interpreter.DatabaseContextExpr, TutorialD.Interpreter.DatabaseContextIOOperator, TutorialD.Interpreter.Export.Base, TutorialD.Interpreter.Export.CSV, TutorialD.Interpreter.Import.Base, TutorialD.Interpreter.Import.BasicExamples, TutorialD.Interpreter.Import.CSV, TutorialD.Interpreter.Import.TutorialD, TutorialD.Interpreter.InformationOperator, TutorialD.Interpreter.RODatabaseContextOperator, TutorialD.Interpreter.RelationalExpr, TutorialD.Interpreter.TestBase, TutorialD.Interpreter.TransGraphRelationalOperator, TutorialD.Interpreter.TransactionGraphOperator, TutorialD.Interpreter.Types, TutorialD.Interpreter.SchemaOperator, TutorialD.Printer

313+ main-is: TutorialD/Interpreter/AtomFunctionScript.hs

289314

290315Test-Suite test-tutoriald-databasecontextfunctionscript

291− Default-Language: Haskell2010

292− Default-Extensions: OverloadedStrings

316+ import: commontest

293317 type: exitcode-stdio-1.0

294− Other-Modules: TutorialD.Interpreter, TutorialD.Interpreter.Base, TutorialD.Interpreter.DatabaseContextExpr, TutorialD.Interpreter.DatabaseContextIOOperator, TutorialD.Interpreter.Export.Base, TutorialD.Interpreter.Export.CSV, TutorialD.Interpreter.Import.Base, TutorialD.Interpreter.Import.BasicExamples, TutorialD.Interpreter.Import.CSV, TutorialD.Interpreter.Import.TutorialD, TutorialD.Interpreter.InformationOperator, TutorialD.Interpreter.RODatabaseContextOperator, TutorialD.Interpreter.RelationalExpr, TutorialD.Interpreter.TestBase, TutorialD.Interpreter.TransGraphRelationalOperator, TutorialD.Interpreter.TransactionGraphOperator, TutorialD.Interpreter.Types, TutorialD.Interpreter.SchemaOperator

295− main-is: test/TutorialD/Interpreter/DatabaseContextFunctionScript.hs

296− Build-Depends: base, HUnit, project-m36, uuid, containers, megaparsec, text, vector, directory, bytestring, mtl, haskeline, random, MonadRandom, semigroups, time, parser-combinators

297− GHC-Options: -Wall -threaded

298− Hs-Source-Dirs: ./src/bin, ./test, .

318+ Other-Modules: TutorialD.Interpreter, TutorialD.Interpreter.Base, TutorialD.Interpreter.DatabaseContextExpr, TutorialD.Interpreter.DatabaseContextIOOperator, TutorialD.Interpreter.Export.Base, TutorialD.Interpreter.Export.CSV, TutorialD.Interpreter.Import.Base, TutorialD.Interpreter.Import.BasicExamples, TutorialD.Interpreter.Import.CSV, TutorialD.Interpreter.Import.TutorialD, TutorialD.Interpreter.InformationOperator, TutorialD.Interpreter.RODatabaseContextOperator, TutorialD.Interpreter.RelationalExpr, TutorialD.Interpreter.TestBase, TutorialD.Interpreter.TransGraphRelationalOperator, TutorialD.Interpreter.TransactionGraphOperator, TutorialD.Interpreter.Types, TutorialD.Interpreter.SchemaOperator, TutorialD.Printer

319+ main-is: TutorialD/Interpreter/DatabaseContextFunctionScript.hs

299320

300321Test-Suite test-relation

301− Default-Language: Haskell2010

302− Default-Extensions: OverloadedStrings

322+ import: commontest

303323 type: exitcode-stdio-1.0

304− main-is: test/Relation/Basic.hs

305− Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, vector-binary-instances, time, hashable-time, bytestring, uuid, stm, deepseq, deepseq-generics, binary, parallel, cassava, attoparsec, gnuplot, directory, temporary, haskeline, megaparsec, text, base64-bytestring, data-interval, filepath, stm-containers, project-m36, transformers

306− GHC-Options: -Wall -threaded

324+ main-is: Relation/Basic.hs

307325

308326Test-Suite test-static-optimizer

309− Default-Language: Haskell2010

310− Default-Extensions: OverloadedStrings

327+ import: commontest

311328 type: exitcode-stdio-1.0

312− main-is: test/Relation/StaticOptimizer.hs

313− Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, vector-binary-instances, time, hashable-time, bytestring, uuid, stm, deepseq, deepseq-generics, binary, parallel, cassava, attoparsec, gnuplot, directory, temporary, haskeline, megaparsec, text, base64-bytestring, data-interval, filepath, stm-containers, project-m36, transformers

314− GHC-Options: -Wall -threaded

329+ main-is: Relation/StaticOptimizer.hs

315330

316331Test-Suite test-transactiongraph-persist

317− Default-Language: Haskell2010

318− Default-Extensions: OverloadedStrings

332+ import: commontest

319333 type: exitcode-stdio-1.0

320− main-is: test/TransactionGraph/Persist.hs

321− Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, vector-binary-instances, time, hashable-time, bytestring, uuid, stm, deepseq, deepseq-generics, binary, parallel, cassava, attoparsec, gnuplot, directory, temporary, haskeline, megaparsec, text, base64-bytestring, data-interval, filepath, stm-containers, project-m36, random, MonadRandom, semigroups, parser-combinators

322− Other-Modules: TutorialD.Interpreter.Base, TutorialD.Interpreter.RelationalExpr, TutorialD.Interpreter.Types, TutorialD.Interpreter.DatabaseContextExpr, TutorialD.Interpreter.Import.BasicExamples

323− Hs-Source-Dirs: ., ./src/bin

324− GHC-Options: -Wall -threaded

334+ main-is: TransactionGraph/Persist.hs

335+ Other-Modules: TutorialD.Interpreter.Base, TutorialD.Interpreter.RelationalExpr, TutorialD.Interpreter.Types, TutorialD.Interpreter.DatabaseContextExpr, TutorialD.Interpreter.Import.BasicExamples, TutorialD.Printer

325336

326337Test-Suite test-relation-import-csv

327− Default-Language: Haskell2010

328− Default-Extensions: OverloadedStrings

338+ import: commontest

329339 type: exitcode-stdio-1.0

330− main-is: test/Relation/Import/CSV.hs

331− Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, vector-binary-instances, time, hashable-time, bytestring, uuid, stm, deepseq, deepseq-generics, binary, parallel, cassava, attoparsec, gnuplot, directory, temporary, haskeline, megaparsec, text, base64-bytestring, data-interval, filepath, stm-containers, project-m36

332− GHC-Options: -Wall -threaded

340+ main-is: Relation/Import/CSV.hs

333341

334342Test-Suite test-tutoriald-import-tutoriald

335− Default-Language: Haskell2010

336− Default-Extensions: OverloadedStrings

343+ import: commontest

337344 type: exitcode-stdio-1.0

338− main-is: test/TutorialD/Interpreter/Import/TutorialD.hs

339− Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, vector-binary-instances, time, hashable-time, bytestring, uuid, stm, deepseq, deepseq-generics, binary, parallel, cassava, attoparsec, gnuplot, directory, temporary, haskeline, megaparsec, text, base64-bytestring, data-interval, filepath, stm-containers, project-m36, random, MonadRandom, semigroups, parser-combinators

340− Other-Modules: TutorialD.Interpreter.Base, TutorialD.Interpreter.Import.Base, TutorialD.Interpreter.Import.TutorialD, TutorialD.Interpreter.RelationalExpr, TutorialD.Interpreter.Types, TutorialD.Interpreter.DatabaseContextExpr, TutorialD.Interpreter.Import.BasicExamples

341− GHC-Options: -Wall -threaded

342− Hs-Source-Dirs: ., ./src/bin

345+ main-is: TutorialD/Interpreter/Import/ImportTest.hs

346+ Other-Modules: TutorialD.Interpreter.Base, TutorialD.Interpreter.Import.Base, TutorialD.Interpreter.Import.TutorialD, TutorialD.Interpreter.RelationalExpr, TutorialD.Interpreter.Types, TutorialD.Interpreter.DatabaseContextExpr, TutorialD.Interpreter.Import.BasicExamples, TutorialD.Printer

343347

344348Test-Suite test-relation-export-csv

345− Default-Language: Haskell2010

346− Default-Extensions: OverloadedStrings

349+ import: commontest

347350 type: exitcode-stdio-1.0

348− main-is: test/Relation/Export/CSV.hs

349− Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, vector-binary-instances, time, hashable-time, bytestring, uuid, stm, deepseq, deepseq-generics, binary, parallel, cassava, attoparsec, gnuplot, directory, temporary, haskeline, megaparsec, text, base64-bytestring, data-interval, filepath, stm-containers, project-m36

350− GHC-Options: -Wall -threaded

351+ main-is: Relation/Export/CSV.hs

351352

352353Test-Suite test-transactiongraph-merge

353− Default-Language: Haskell2010

354− Default-Extensions: OverloadedStrings

354+ import: commontest

355355 type: exitcode-stdio-1.0

356− main-is: test/TransactionGraph/Merge.hs

357− Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, vector-binary-instances, time, hashable-time, bytestring, uuid, stm, deepseq, deepseq-generics, binary, parallel, cassava, attoparsec, gnuplot, directory, temporary, haskeline, megaparsec, text, base64-bytestring, data-interval, filepath, template-haskell, transformers, aeson, conduit, either, path-pieces, http-api-data, stm-containers, list-t, project-m36

358− GHC-Options: -Wall -threaded

356+ main-is: TransactionGraph/Merge.hs

357+

358+

359+Test-Suite test-prettyprinter

360+ import: commontest

361+ type: exitcode-stdio-1.0

362+ main-is: TutorialD/PrinterTest.hs

363+ Other-Modules: TutorialD.Printer, TutorialD.Interpreter.Base, TutorialD.Interpreter.RelationalExpr, TutorialD.Interpreter.Types

359364

360365benchmark bench

361− Default-Language: Haskell2010

362− Default-Extensions: OverloadedStrings

366+ import: commontest

363367 type: exitcode-stdio-1.0

364368 main-is: benchmark/Relation.hs

365− Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, vector-binary-instances, time, hashable-time, bytestring, uuid, stm, deepseq, deepseq-generics, binary, parallel, cassava, attoparsec, gnuplot, directory, temporary, haskeline, megaparsec, text, base64-bytestring, data-interval, filepath, criterion, stm-containers, project-m36

366− GHC-Options: -Wall -rtsopts -threaded

367− Hs-Source-Dirs: ./src/bin

368369

369370Test-Suite test-server

370− Default-Language: Haskell2010

371− Default-Extensions: OverloadedStrings

371+ import: commontest

372372 type: exitcode-stdio-1.0

373− main-is: test/Server/Main.hs

374− Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, vector-binary-instances, time, hashable-time, bytestring, network-transport-tcp, uuid, stm, deepseq, deepseq-generics, binary, parallel, cassava, attoparsec, gnuplot, directory, temporary, haskeline, megaparsec, text, base64-bytestring, data-interval, filepath, transformers, stm-containers, list-t, project-m36, network-transport, semigroups

375− HS-Source-Dirs: ., ./src/bin

376− GHC-Options: -Wall -threaded

373+ main-is: Server/Main.hs

374+

377375

378376Executable Example-SimpleClient

379377 Default-Language: Haskell2010

380378 Default-Extensions: OverloadedStrings

381− Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, vector-binary-instances, time, hashable-time, bytestring, uuid, stm, deepseq, deepseq-generics, binary, parallel, cassava, attoparsec, gnuplot, directory, temporary, haskeline, megaparsec, text, base64-bytestring, data-interval, filepath, transformers, stm-containers, list-t, ghc, ghc-paths, project-m36, random, MonadRandom

379+ Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, time, hashable-time, bytestring, uuid, stm, deepseq, deepseq-generics,parallel, cassava, attoparsec, gnuplot, directory, temporary, haskeline, megaparsec, text, base64-bytestring, data-interval, filepath, transformers, stm-containers, list-t, ghc, ghc-paths, project-m36, random, MonadRandom

382380 Main-Is: examples/SimpleClient.hs

383381 GHC-Options: -Wall -threaded

384382

385383Executable Example-OutOfTheTarpit

386384 Default-Language: Haskell2010

387385 Default-Extensions: OverloadedStrings

388− Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, vector-binary-instances, time, hashable-time, bytestring, uuid, stm, deepseq, deepseq-generics, binary, parallel, cassava, attoparsec, gnuplot, directory, temporary, haskeline, megaparsec, text, base64-bytestring, data-interval, filepath, transformers, stm-containers, list-t, aeson, path-pieces, either, conduit, http-api-data, template-haskell, ghc, ghc-paths, project-m36

386+ Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, time, hashable-time, bytestring, uuid, stm, deepseq, deepseq-generics,parallel, cassava, attoparsec, gnuplot, directory, temporary, haskeline, megaparsec, text, base64-bytestring, data-interval, filepath, transformers, stm-containers, list-t, aeson, path-pieces, either, conduit, http-api-data, template-haskell, ghc, ghc-paths, project-m36, winery

389387 Main-Is: examples/out_of_the_tarpit.hs

390388 GHC-Options: -Wall -threaded

391389

392390Executable Example-Blog

393391 Default-Language: Haskell2010

394392 Default-Extensions: OverloadedStrings

395− Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, vector-binary-instances, time, hashable-time, bytestring, uuid, stm, deepseq, deepseq-generics, binary, parallel, cassava, attoparsec, gnuplot, directory, temporary, haskeline, megaparsec, text, base64-bytestring, data-interval, filepath, transformers, stm-containers, list-t, aeson, path-pieces, either, conduit, http-api-data, template-haskell, ghc, ghc-paths, project-m36, scotty, blaze-html, http-types

393+ Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, time, hashable-time, bytestring, uuid, stm, deepseq, deepseq-generics,parallel, cassava, attoparsec, gnuplot, directory, temporary, haskeline, megaparsec, text, base64-bytestring, data-interval, filepath, transformers, stm-containers, list-t, aeson, path-pieces, either, conduit, http-api-data, template-haskell, ghc, ghc-paths, project-m36, scotty, blaze-html, http-types, winery

396394 Main-Is: examples/blog.hs

397395 GHC-Options: -Wall -threaded

398396

399−

400397Executable Example-Hair

401398 Default-Language: Haskell2010

402399 Default-Extensions: OverloadedStrings

403− Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, vector-binary-instances, time, hashable-time, bytestring, uuid, stm, deepseq, deepseq-generics, binary, parallel, cassava, attoparsec, gnuplot, directory, temporary, haskeline, megaparsec, text, base64-bytestring, data-interval, filepath, transformers, stm-containers, list-t, aeson, path-pieces, either, conduit, http-api-data, template-haskell, ghc, ghc-paths, project-m36

400+ Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, time, hashable-time, bytestring, uuid, stm, deepseq, deepseq-generics,parallel, cassava, attoparsec, gnuplot, directory, temporary, haskeline, megaparsec, text, base64-bytestring, data-interval, filepath, transformers, stm-containers, list-t, aeson, path-pieces, either, conduit, http-api-data, template-haskell, ghc, ghc-paths, project-m36, winery

404401 Main-Is: examples/hair.hs

405402 GHC-Options: -Wall -threaded

406403

404+Executable Example-Plantfarm

405+ Default-Language: Haskell2010

406+ Default-Extensions: OverloadedStrings

407+ Build-Depends: aeson, barbies, base, binary, containers, deepseq, hashable, project-m36, random, scotty, text, winery

408+ Main-Is: examples/Plantfarm.hs

409+ GHC-Options: -Wall -threaded

410+

407411Executable Example-CustomTupleable

408412 Default-Language: Haskell2010

409413 Default-Extensions: OverloadedStrings

410− Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, vector-binary-instances, time, hashable-time, bytestring, uuid, stm, deepseq, deepseq-generics, binary, parallel, cassava, attoparsec, gnuplot, directory, temporary, haskeline, megaparsec, text, base64-bytestring, data-interval, filepath, transformers, stm-containers, list-t, aeson, path-pieces, either, conduit, http-api-data, template-haskell, ghc, ghc-paths, project-m36

414+ Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, time, hashable-time, bytestring, uuid, stm, deepseq, deepseq-generics,parallel, cassava, attoparsec, gnuplot, directory, temporary, haskeline, megaparsec, text, base64-bytestring, data-interval, filepath, transformers, stm-containers, list-t, aeson, path-pieces, either, conduit, http-api-data, template-haskell, ghc, ghc-paths, project-m36, winery

411415 Main-Is: examples/CustomTupleable.hs

412416 GHC-Options: -Wall -threaded

413417

414−-- requires ghc >= 8.6.1

415−-- Executable Example-DerivingCustomTupleable

416− -- Default-Language: Haskell2010

417− -- Build-Depends: base, text, deepseq, binary, project-m36

418− -- Main-Is: examples/DerivingCustomTupleable.hs

419− -- GHC-Options: -Wall -threaded

418+Executable Example-DerivingCustomTupleable

419+ if impl(ghc>=8.6)

420+ Buildable: True

421+ else

422+ Buildable: False

423+ Default-Language: Haskell2010

424+ Build-Depends: base, text, deepseq, project-m36, winery

425+ Main-Is: examples/DerivingCustomTupleable.hs

426+ GHC-Options: -Wall -threaded

420427

421428Test-Suite test-scripts

422− Default-Language: Haskell2010

423− Default-Extensions: OverloadedStrings

429+ import: commontest

424430 type: exitcode-stdio-1.0

425− main-is: test/scripts.hs

426− Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, vector-binary-instances, time, hashable-time, bytestring, network-transport-tcp, uuid, stm, deepseq, deepseq-generics, binary, parallel, cassava, attoparsec, gnuplot, directory, temporary, haskeline, megaparsec, text, base64-bytestring, data-interval, filepath, transformers, stm-containers, list-t, project-m36, random, MonadRandom, semigroups, parser-combinators

427− Other-Modules: TutorialD.Interpreter.Base, TutorialD.Interpreter.DatabaseContextExpr, TutorialD.Interpreter.Import.Base, TutorialD.Interpreter.Import.TutorialD, TutorialD.Interpreter.RelationalExpr, TutorialD.Interpreter.Types, TutorialD.Interpreter.Import.BasicExamples

428− GHC-Options: -Wall -threaded

429− Hs-Source-Dirs: ., ./src/bin

431+ main-is: scripts.hs

432+ Other-Modules: TutorialD.Interpreter.Base, TutorialD.Interpreter.DatabaseContextExpr, TutorialD.Interpreter.Import.Base, TutorialD.Interpreter.Import.TutorialD, TutorialD.Interpreter.RelationalExpr, TutorialD.Interpreter.Types, TutorialD.Interpreter.Import.BasicExamples, TutorialD.Printer

430433

431434Executable project-m36-websocket-server

432435 Default-Language: Haskell2010

433− Build-Depends: base, aeson, path-pieces, either, conduit, http-api-data, template-haskell, websockets, aeson, optparse-applicative, project-m36, containers, bytestring, text, vector, uuid, megaparsec, haskeline, mtl, directory, base64-bytestring, random, MonadRandom, time, network-transport-tcp, semigroups, attoparsec, parser-combinators

436+ Build-Depends: base, aeson, path-pieces, either, conduit, http-api-data, template-haskell, websockets, aeson, optparse-applicative, project-m36, containers, bytestring, text, vector, uuid, megaparsec, haskeline, mtl, directory, base64-bytestring, random, MonadRandom, time, semigroups, attoparsec, parser-combinators, prettyprinter, network, modern-uri, http-conduit, base16-bytestring, http-types, cryptohash-sha256, wai, wai-websockets, warp, warp-tls

434437 Main-Is: ProjectM36/Server/WebSocket/websocket-server.hs

435− Other-Modules: ProjectM36.Client.Json, ProjectM36.Server.RemoteCallTypes.Json, ProjectM36.Server.WebSocket, TutorialD.Interpreter, TutorialD.Interpreter.Base, TutorialD.Interpreter.DatabaseContextExpr, TutorialD.Interpreter.DatabaseContextIOOperator, TutorialD.Interpreter.Export.Base, TutorialD.Interpreter.Export.CSV, TutorialD.Interpreter.Import.Base, TutorialD.Interpreter.Import.BasicExamples, TutorialD.Interpreter.Import.CSV, TutorialD.Interpreter.Import.TutorialD, TutorialD.Interpreter.InformationOperator, TutorialD.Interpreter.RODatabaseContextOperator, TutorialD.Interpreter.RelationalExpr, TutorialD.Interpreter.TransactionGraphOperator, TutorialD.Interpreter.Types, TutorialD.Interpreter.TransGraphRelationalOperator, TutorialD.Interpreter.SchemaOperator

438+ Other-Modules: ProjectM36.Client.Json, ProjectM36.Server.RemoteCallTypes.Json, ProjectM36.Server.WebSocket, TutorialD.Interpreter, TutorialD.Interpreter.Base, TutorialD.Interpreter.DatabaseContextExpr, TutorialD.Interpreter.DatabaseContextIOOperator, TutorialD.Interpreter.Export.Base, TutorialD.Interpreter.Export.CSV, TutorialD.Interpreter.Import.Base, TutorialD.Interpreter.Import.BasicExamples, TutorialD.Interpreter.Import.CSV, TutorialD.Interpreter.Import.TutorialD, TutorialD.Interpreter.InformationOperator, TutorialD.Interpreter.RODatabaseContextOperator, TutorialD.Interpreter.RelationalExpr, TutorialD.Interpreter.TransactionGraphOperator, TutorialD.Interpreter.Types, TutorialD.Interpreter.TransGraphRelationalOperator, TutorialD.Interpreter.SchemaOperator, TutorialD.Printer

436439 GHC-Options: -Wall -threaded

437440 Hs-Source-Dirs: ./src/bin

438441 Default-Extensions: OverloadedStrings

439442

440443Test-Suite test-websocket-server

441− Default-Language: Haskell2010

444+ import: commontest

442445 type: exitcode-stdio-1.0

443− main-is: test/Server/WebSocket.hs

444− Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, vector-binary-instances, time, hashable-time, bytestring, uuid, stm, deepseq, deepseq-generics, binary, parallel, cassava, attoparsec, gnuplot, directory, temporary, haskeline, megaparsec, text, base64-bytestring, data-interval, filepath, transformers, stm-containers, list-t, websockets, optparse-applicative, network, aeson, project-m36, random, MonadRandom, network-transport-tcp, semigroups, parser-combinators

445− Other-Modules: TutorialD.Interpreter.Export.Base, TutorialD.Interpreter.Export.CSV, TutorialD.Interpreter.Import.BasicExamples, TutorialD.Interpreter.Import.CSV, TutorialD.Interpreter.InformationOperator, TutorialD.Interpreter.RODatabaseContextOperator, TutorialD.Interpreter.TransactionGraphOperator, ProjectM36.Client.Json, ProjectM36.Server.RemoteCallTypes.Json, ProjectM36.Server.WebSocket, TutorialD.Interpreter, TutorialD.Interpreter.Base, TutorialD.Interpreter.DatabaseContextExpr, TutorialD.Interpreter.Import.Base, TutorialD.Interpreter.Import.TutorialD, TutorialD.Interpreter.RelationalExpr, TutorialD.Interpreter.Types, TutorialD.Interpreter.DatabaseContextIOOperator, TutorialD.Interpreter.TransGraphRelationalOperator, TutorialD.Interpreter.SchemaOperator

446− Default-Extensions: OverloadedStrings

447− GHC-Options: -Wall -threaded

448− Hs-Source-Dirs: ./src/bin, .

446+ main-is: Server/WebSocket.hs

447+ Other-Modules: TutorialD.Interpreter.Export.Base, TutorialD.Interpreter.Export.CSV, TutorialD.Interpreter.Import.BasicExamples, TutorialD.Interpreter.Import.CSV, TutorialD.Interpreter.InformationOperator, TutorialD.Interpreter.RODatabaseContextOperator, TutorialD.Interpreter.TransactionGraphOperator, ProjectM36.Client.Json, ProjectM36.Server.RemoteCallTypes.Json, ProjectM36.Server.WebSocket, TutorialD.Interpreter, TutorialD.Interpreter.Base, TutorialD.Interpreter.DatabaseContextExpr, TutorialD.Interpreter.Import.Base, TutorialD.Interpreter.Import.TutorialD, TutorialD.Interpreter.RelationalExpr, TutorialD.Interpreter.Types, TutorialD.Interpreter.DatabaseContextIOOperator, TutorialD.Interpreter.TransGraphRelationalOperator, TutorialD.Interpreter.SchemaOperator, TutorialD.Printer

449448

450449Test-Suite test-isomorphic-schemas

451− Default-Language: Haskell2010

450+ import: commontest

452451 type: exitcode-stdio-1.0

453− main-is: test/IsomorphicSchema.hs

454− Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, vector-binary-instances, time, hashable-time, bytestring, uuid, stm, deepseq, deepseq-generics, binary, parallel, cassava, attoparsec, gnuplot, directory, temporary, haskeline, megaparsec, text, base64-bytestring, data-interval, filepath, transformers, stm-containers, list-t, websockets, optparse-applicative, network, aeson, project-m36

455− Default-Extensions: OverloadedStrings

456− GHC-Options: -Wall -threaded

457− Hs-Source-Dirs: ./src/bin, .

452+ main-is: IsomorphicSchema.hs

458453

459454Test-Suite test-atomable

460− Default-Language: Haskell2010

455+ import: commontest

461456 type: exitcode-stdio-1.0

462− main-is: test/Relation/Atomable.hs

463− Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, vector-binary-instances, time, hashable-time, bytestring, uuid, stm, deepseq, deepseq-generics, binary, parallel, cassava, attoparsec, gnuplot, directory, temporary, haskeline, megaparsec, text, base64-bytestring, data-interval, filepath, transformers, stm-containers, list-t, websockets, optparse-applicative, network, aeson, project-m36, random, MonadRandom, semigroups, parser-combinators

464− Other-Modules: TutorialD.Interpreter, TutorialD.Interpreter.Base, TutorialD.Interpreter.DatabaseContextExpr, TutorialD.Interpreter.DatabaseContextIOOperator, TutorialD.Interpreter.Export.Base, TutorialD.Interpreter.Export.CSV, TutorialD.Interpreter.Import.Base, TutorialD.Interpreter.Import.BasicExamples, TutorialD.Interpreter.Import.CSV, TutorialD.Interpreter.Import.TutorialD, TutorialD.Interpreter.InformationOperator, TutorialD.Interpreter.RODatabaseContextOperator, TutorialD.Interpreter.RelationalExpr, TutorialD.Interpreter.SchemaOperator, TutorialD.Interpreter.TestBase, TutorialD.Interpreter.TransGraphRelationalOperator, TutorialD.Interpreter.TransactionGraphOperator, TutorialD.Interpreter.Types

465− Default-Extensions: OverloadedStrings

466− GHC-Options: -Wall -threaded

467− Hs-Source-Dirs: ./src/bin, ., test/

457+ main-is: Relation/Atomable.hs

458+ Other-Modules: TutorialD.Interpreter, TutorialD.Interpreter.Base, TutorialD.Interpreter.DatabaseContextExpr, TutorialD.Interpreter.DatabaseContextIOOperator, TutorialD.Interpreter.Export.Base, TutorialD.Interpreter.Export.CSV, TutorialD.Interpreter.Import.Base, TutorialD.Interpreter.Import.BasicExamples, TutorialD.Interpreter.Import.CSV, TutorialD.Interpreter.Import.TutorialD, TutorialD.Interpreter.InformationOperator, TutorialD.Interpreter.RODatabaseContextOperator, TutorialD.Interpreter.RelationalExpr, TutorialD.Interpreter.SchemaOperator, TutorialD.Interpreter.TestBase, TutorialD.Interpreter.TransGraphRelationalOperator, TutorialD.Interpreter.TransactionGraphOperator, TutorialD.Interpreter.Types, TutorialD.Printer

468459

469460Test-Suite test-multiprocess-access

470− Default-Language: Haskell2010

461+ import: commontest

471462 type: exitcode-stdio-1.0

472− main-is: test/MultiProcessDatabaseAccess.hs

473− Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, vector-binary-instances, time, hashable-time, bytestring, uuid, stm, deepseq, deepseq-generics, binary, parallel, cassava, attoparsec, gnuplot, directory, temporary, haskeline, megaparsec, text, base64-bytestring, data-interval, filepath, transformers, stm-containers, list-t, websockets, optparse-applicative, network, aeson, project-m36, random, MonadRandom

474− Default-Extensions: OverloadedStrings

475− GHC-Options: -Wall -threaded

476− Hs-Source-Dirs: ./src/bin, ., test/

463+ main-is: MultiProcessDatabaseAccess.hs

477464

478465Test-Suite test-transactiongraph-automerge

479− Default-Language: Haskell2010

466+ import: commontest

480467 type: exitcode-stdio-1.0

481− main-is: test/TransactionGraph/Automerge.hs

482− Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, vector-binary-instances, time, hashable-time, bytestring, uuid, stm, deepseq, deepseq-generics, binary, parallel, cassava, attoparsec, gnuplot, directory, temporary, haskeline, megaparsec, text, base64-bytestring, data-interval, filepath, transformers, stm-containers, list-t, websockets, optparse-applicative, network, aeson, project-m36, random, MonadRandom, semigroups, parser-combinators

483− Other-Modules: TutorialD.Interpreter, TutorialD.Interpreter.Base, TutorialD.Interpreter.DatabaseContextExpr, TutorialD.Interpreter.DatabaseContextIOOperator, TutorialD.Interpreter.Export.Base, TutorialD.Interpreter.Export.CSV, TutorialD.Interpreter.Import.Base, TutorialD.Interpreter.Import.BasicExamples, TutorialD.Interpreter.Import.CSV, TutorialD.Interpreter.Import.TutorialD, TutorialD.Interpreter.InformationOperator, TutorialD.Interpreter.RODatabaseContextOperator, TutorialD.Interpreter.RelationalExpr, TutorialD.Interpreter.SchemaOperator, TutorialD.Interpreter.TestBase, TutorialD.Interpreter.TransGraphRelationalOperator, TutorialD.Interpreter.TransactionGraphOperator, TutorialD.Interpreter.Types

484− Default-Extensions: OverloadedStrings

485− GHC-Options: -Wall -threaded

486− Hs-Source-Dirs: ./src/bin, ., test/

468+ main-is: TransactionGraph/Automerge.hs

469+ Other-Modules: TutorialD.Interpreter, TutorialD.Interpreter.Base, TutorialD.Interpreter.DatabaseContextExpr, TutorialD.Interpreter.DatabaseContextIOOperator, TutorialD.Interpreter.Export.Base, TutorialD.Interpreter.Export.CSV, TutorialD.Interpreter.Import.Base, TutorialD.Interpreter.Import.BasicExamples, TutorialD.Interpreter.Import.CSV, TutorialD.Interpreter.Import.TutorialD, TutorialD.Interpreter.InformationOperator, TutorialD.Interpreter.RODatabaseContextOperator, TutorialD.Interpreter.RelationalExpr, TutorialD.Interpreter.SchemaOperator, TutorialD.Interpreter.TestBase, TutorialD.Interpreter.TransGraphRelationalOperator, TutorialD.Interpreter.TransactionGraphOperator, TutorialD.Interpreter.Types, TutorialD.Printer

487470

488471Test-Suite test-tupleable

489− Default-Language: Haskell2010

472+ import: commontest

490473 type: exitcode-stdio-1.0

491− main-is: test/Relation/Tupleable.hs

492− Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, vector-binary-instances, time, hashable-time, bytestring, uuid, stm, deepseq, deepseq-generics, binary, parallel, cassava, attoparsec, gnuplot, directory, temporary, haskeline, megaparsec, text, base64-bytestring, data-interval, filepath, transformers, stm-containers, list-t, websockets, optparse-applicative, network, aeson, project-m36, random, MonadRandom, semigroups

493− Default-Extensions: OverloadedStrings

494− GHC-Options: -Wall -threaded

495− Hs-Source-Dirs: ./src/bin, ., test/

474+ main-is: Relation/Tupleable.hs

496475

497476Test-Suite test-client-simple

498− Default-Language: Haskell2010

499− Main-Is: test/Client/Simple.hs

477+ import: commontest

478+ Main-Is: Client/Simple.hs

500479 type: exitcode-stdio-1.0

501− Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, vector-binary-instances, time, hashable-time, bytestring, uuid, stm, deepseq, deepseq-generics, binary, parallel, cassava, attoparsec, gnuplot, directory, temporary, haskeline, megaparsec, text, base64-bytestring, data-interval, filepath, transformers, stm-containers, list-t, websockets, optparse-applicative, network, aeson, project-m36, random, MonadRandom, semigroups

502− Default-Extensions: OverloadedStrings

503− GHC-Options: -Wall -threaded

504− Hs-Source-Dirs: ./src/bin, ., test/

505480

506481-- test for file handle leaks

507482Executable handles

508483 Default-Language: Haskell2010

509484 Default-Extensions: OverloadedStrings

510− Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, vector-binary-instances, time, hashable-time, bytestring, uuid, stm, deepseq, deepseq-generics, binary, parallel, cassava, attoparsec, gnuplot, directory, temporary, haskeline, megaparsec, text, base64-bytestring, data-interval, filepath, optparse-applicative, stm-containers, list-t, ghc, ghc-paths, transformers, project-m36, random, MonadRandom, semigroups, parser-combinators

485+ Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, time, hashable-time, bytestring, uuid, stm, deepseq, deepseq-generics,parallel, cassava, attoparsec, gnuplot, directory, temporary, haskeline, megaparsec, text, base64-bytestring, data-interval, filepath, optparse-applicative, stm-containers, list-t, ghc, ghc-paths, transformers, project-m36, random, MonadRandom, semigroups, parser-combinators, prettyprinter, modern-uri, http-types, http-conduit, base16-bytestring, cryptohash-sha256

511486 main-is: benchmark/Handles.hs

512487 Other-Modules: TutorialD.Interpreter,

513488 TutorialD.Interpreter.Base,

@@ -526,17 +501,14 @@ Executable handles

526501 TutorialD.Interpreter.TransGraphRelationalOperator,

527502 TutorialD.Interpreter.TransactionGraphOperator,

528503 TutorialD.Interpreter.Types

504+ TutorialD.Printer

529505 GHC-Options: -Wall -threaded -rtsopts

530506 HS-Source-Dirs: ./src/bin

531507 if flag(profiler)

532508 GHC-Prof-Options: -fprof-auto -rtsopts -threaded -Wall

533509

534510Test-Suite test-dataframe

535− Default-Language: Haskell2010

536− Main-Is: test/DataFrame.hs

511+ import: commontest

537512 type: exitcode-stdio-1.0

538− Other-Modules: TutorialD.Interpreter, TutorialD.Interpreter.Base, TutorialD.Interpreter.DatabaseContextExpr, TutorialD.Interpreter.DatabaseContextIOOperator, TutorialD.Interpreter.Export.Base, TutorialD.Interpreter.Export.CSV, TutorialD.Interpreter.Import.Base, TutorialD.Interpreter.Import.BasicExamples, TutorialD.Interpreter.Import.CSV, TutorialD.Interpreter.Import.TutorialD, TutorialD.Interpreter.InformationOperator, TutorialD.Interpreter.RODatabaseContextOperator, TutorialD.Interpreter.RelationalExpr, TutorialD.Interpreter.SchemaOperator, TutorialD.Interpreter.TestBase, TutorialD.Interpreter.TransGraphRelationalOperator, TutorialD.Interpreter.TransactionGraphOperator, TutorialD.Interpreter.Types

539− Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, vector-binary-instances, time, hashable-time, bytestring, uuid, stm, deepseq, deepseq-generics, binary, parallel, cassava, attoparsec, gnuplot, directory, temporary, haskeline, megaparsec, text, base64-bytestring, data-interval, filepath, transformers, stm-containers, list-t, websockets, optparse-applicative, network, aeson, project-m36, random, MonadRandom, semigroups, parser-combinators

540− Default-Extensions: OverloadedStrings

541− GHC-Options: -Wall -threaded

542− Hs-Source-Dirs: ./src/bin, ., test/

513+ Main-Is: DataFrame.hs

514+ Other-Modules: TutorialD.Interpreter, TutorialD.Interpreter.Base, TutorialD.Interpreter.DatabaseContextExpr, TutorialD.Interpreter.DatabaseContextIOOperator, TutorialD.Interpreter.Export.Base, TutorialD.Interpreter.Export.CSV, TutorialD.Interpreter.Import.Base, TutorialD.Interpreter.Import.BasicExamples, TutorialD.Interpreter.Import.CSV, TutorialD.Interpreter.Import.TutorialD, TutorialD.Interpreter.InformationOperator, TutorialD.Interpreter.RODatabaseContextOperator, TutorialD.Interpreter.RelationalExpr, TutorialD.Interpreter.SchemaOperator, TutorialD.Interpreter.TestBase, TutorialD.Interpreter.TransGraphRelationalOperator, TutorialD.Interpreter.TransactionGraphOperator, TutorialD.Interpreter.Types, TutorialD.Printer

release.nixnew file+36

@@ -0,0 +1,36 @@

1+{ compiler ? "ghc8104"

2+, sources ? import ./nix/sources.nix

3+, pkgs ? import sources.nixpkgs { }

4+}:

5+let

6+ doJailbreak = pkgs.haskell.lib.doJailbreak;

7+ needsCocoa = drv:

8+ if pkgs.stdenv.isDarwin

9+ then drv.overrideDerivation (old:

10+ { buildInputs = [ pkgs.darwin.apple_sdk.frameworks.Cocoa ] ++ old.buildInputs; }

11+ )

12+ else drv;

13+

14+ haskellPackages = pkgs.haskell.packages.${compiler}.override {

15+ overrides = self: super: {

16+ curryer-rpc = self.callCabal2nix "curryer-rpc" sources.curryer { };

17+ streamly = doJailbreak (needsCocoa (self.callCabal2nix "streamly" sources.streamly { }));

18+ project-m36 = ((self.callCabal2nixWithOptions "project-m36" ./. "-f-haskell-scripting" { }));

19+ };

20+ };

21+in

22+{

23+ project = haskellPackages.project-m36;

24+

25+ shell = haskellPackages.shellFor {

26+ packages = p: [

27+ p.project-m36

28+ ];

29+ buildInputs = [

30+ haskellPackages.ghcid

31+ haskellPackages.hlint

32+ pkgs.docker

33+ ];

34+ withHoogle = true;

35+ };

36+}

scripts/DateExamples.tutd+2−2

@@ -20,7 +20,7 @@ sp := relation{tuple{s# "S1",p# "P1",qty 300},

2020 tuple{s# "S3",p# "P2",qty 200},

2121 tuple{s# "S4",p# "P4",qty 300},

2222 tuple{s# "S4",p# "P5",qty 400}};

23−key s_pkey {s#} s

24−key p_key {p#} p

23+key s_pkey {s#} s;

24+key p_key {p#} p;

2525foreign key s_sp_fk sp{s#} in s{s#};

2626foreign key p_sp_fk sp{p#} in p{p#};

scripts/multiline.tutdnew file+2

@@ -0,0 +1,2 @@

1+x:=relation{

2+tuple{ x 2}} -- nice

shell.nixnew file+1

@@ -0,0 +1 @@

1+(import ./release.nix { }).shell

src/bin/ProjectM36/Server/RemoteCallTypes/Json.hs+20−2

@@ -11,6 +11,7 @@ import ProjectM36.Error

1111import ProjectM36.IsomorphicSchema

1212import ProjectM36.Server.RemoteCallTypes

1313import ProjectM36.MerkleHash

14+import ProjectM36.Attribute as A

1415

1516import Data.Aeson

1617import Data.ByteString.Base64 as B64

@@ -44,8 +45,11 @@ instance FromJSON ExecuteRelationalExpr

4445instance ToJSON Relation

4546instance FromJSON Relation

4647

47−instance ToJSON Attribute

48−instance FromJSON Attribute

48+instance ToJSON Attribute where

49+ toJSON (Attribute attrName aType) = object [ "name" .= attrName

50+ , "type" .= toJSON aType ]

51+instance FromJSON Attribute where

52+ parseJSON = withObject "Attribute" $ \v -> Attribute <$> v .: "name" <*> v .: "type"

4953

5054instance ToJSON ExtendTupleExpr

5155instance FromJSON ExtendTupleExpr

@@ -99,6 +103,8 @@ instance ToJSON Atom where

99103 "val" .= i ]

100104 toJSON atom@(RelationAtom i) = object [ "type" .= atomTypeForAtom atom,

101105 "val" .= i ]

106+ toJSON atom@(RelationalExprAtom i) = object [ "type" .= atomTypeForAtom atom,

107+ "val" .= i ]

102108 toJSON (ConstructedAtom dConsName atomtype atomlist) = object [

103109 "dataconstructorname" .= dConsName,

104110 "type" .= toJSON atomtype,

@@ -126,6 +132,7 @@ instance FromJSON Atom where

126132 Left err -> fail ("Failed to parse base64-encoded ByteString: " ++ err)

127133 Right bs -> pure (ByteStringAtom bs)

128134 BoolAtomType -> BoolAtom <$> o .: "val"

135+ RelationalExprAtomType -> RelationalExprAtom <$> o .: "val"

129136

130137instance ToJSON Notification

131138instance FromJSON Notification

@@ -142,6 +149,12 @@ instance FromJSON MerkleHash where

142149 Left err -> fail ("Failed to parse merkle hash: " ++ err)

143150 Right bs -> pure (MerkleHash bs)

144151

152+instance ToJSON Attributes where

153+ toJSON attrs = object ["attributes" .= map toJSON (A.toList attrs)]

154+instance FromJSON Attributes where

155+ parseJSON = withObject "Attributes" $ \o ->

156+ A.attributesFromList <$> o .: "attributes"

157+

145158instance ToJSON RelationalError

146159instance FromJSON RelationalError

147160

@@ -151,6 +164,9 @@ instance FromJSON SchemaError

151164instance ToJSON MergeError

152165instance FromJSON MergeError

153166

167+instance ToJSON ImportError'

168+instance FromJSON ImportError'

169+

154170instance ToJSON DatabaseContextFunctionError

155171instance FromJSON DatabaseContextFunctionError

156172

@@ -165,3 +181,5 @@ instance FromJSON AtomFunctionError

165181

166182instance ToJSON WithNameExpr

167183instance FromJSON WithNameExpr

184+

185+

src/bin/ProjectM36/Server/WebSocket.hs+3−2

@@ -22,6 +22,7 @@ import Data.Attoparsec.Text

2222import Control.Applicative

2323import Text.Megaparsec.Error

2424import Data.Functor

25+import Data.Either (fromRight)

2526

2627#if MIN_VERSION_megaparsec(7,0,0)

2728import Data.List.NonEmpty as NE

@@ -85,7 +86,7 @@ notificationCallback conn notifName evaldNotif = WS.sendTextData conn (encode (o

8586

8687--this creates a new database for each connection- perhaps not what we want (?)

8788createConnection :: WS.Connection -> DatabaseName -> Port -> Hostname -> IO (Either ConnectionError Connection)

88−createConnection wsconn dbname port host = connectProjectM36 (RemoteProcessConnectionInfo dbname (createNodeId host port) (notificationCallback wsconn))

89+createConnection wsconn dbname port host = connectProjectM36 (RemoteConnectionInfo dbname host (show port) (notificationCallback wsconn))

8990

9091sendError :: (ToJSON a) => WS.Connection -> a -> IO ()

9192sendError conn err = WS.sendTextData conn (encode (object ["displayerror" .= err]))

@@ -117,7 +118,7 @@ promptInfo :: SessionId -> Connection -> IO (HeadName, SchemaName)

117118promptInfo sessionId conn = do

118119 eHeadName <- headName sessionId conn

119120 eSchemaName <- currentSchemaName sessionId conn

120− pure (either (const "<unknown>") id eHeadName, either (const "<no schema>") id eSchemaName)

121+ pure (fromRight "<unknown>" eHeadName, fromRight "<no schema>" eSchemaName)

121122

122123sendPromptInfo :: (HeadName, SchemaName) -> WS.Connection -> IO ()

123124sendPromptInfo (hName, sName) conn = WS.sendTextData conn (encode (object ["promptInfo" .= object ["headname" .= hName, "schemaname" .= sName]]))

src/bin/ProjectM36/Server/WebSocket/websocket-client.html+1−1

@@ -126,7 +126,7 @@ margin-bottom: 5pt;

126126 <li>:showrelvars</li>

127127 <li>:showexpr true</li>

128128 <li>:showexpr false</li>

129− <li>:importexample date</li>

129+ <li>:importexample cjdate</li>

130130 <li>:showexpr s join sp</li>

131131 <li>update s where city="Paris" (status:=10)</li>

132132 <li>:showexpr s</li>

src/bin/ProjectM36/Server/WebSocket/websocket-server.hs+48−18

@@ -1,33 +1,63 @@

11{-# LANGUAGE CPP #-}

2−import ProjectM36.Server.WebSocket

3−import ProjectM36.Server.Config

4−import ProjectM36.Server.ParseArgs

5−import ProjectM36.Server

6−import Control.Concurrent

7−import qualified Network.WebSockets as WS

8−

9−#if MIN_VERSION_network_transport_tcp(0,6,0)

10−import Network.Transport.TCP.Internal (decodeEndPointAddress)

11−#else

12−import Network.Transport.TCP (decodeEndPointAddress)

13−#endif

142

3+import Control.Concurrent

154import Control.Exception

5+import Control.Monad (when)

6+import Data.Maybe (isJust)

7+import Data.String (fromString)

8+import Network.HTTP.Types (status400)

9+import Network.Socket

10+import Network.Wai (Application, responseLBS)

11+import Network.Wai.Handler.Warp

12+import Network.Wai.Handler.WarpTLS (runTLS, tlsSettings)

13+import qualified Network.Wai.Handler.WebSockets as WS

14+import Network.WebSockets (defaultConnectionOptions)

15+import ProjectM36.Server

16+import ProjectM36.Server.Config

17+import ProjectM36.Server.ParseArgs

18+import ProjectM36.Server.WebSocket

1619

1720main :: IO ()

1821main = do

1922 -- launch normal project-m36-server

2023 addressMVar <- newEmptyMVar

21− serverConfig <- parseConfigWithDefaults (defaultServerConfig { bindPort = 8000, bindHost = "127.0.0.1" })

24+ wsConfig <- parseWSConfigWithDefaults (defaultServerConfig {bindPort = 8000, bindHost = "127.0.0.1"})

25+

2226 --usurp the serverConfig for our websocket server and make the proxied server run locally

23− let wsHost = bindHost serverConfig

27+ let serverConfig = wsServerConfig wsConfig

28+ wsHost = bindHost serverConfig

2429 wsPort = bindPort serverConfig

2530 serverHost = "127.0.0.1"

2631 serverConfig' = serverConfig {bindPort = 0, bindHost = serverHost}

32+ configCertificateFile = tlsCertificatePath wsConfig

33+ configKeyFile = tlsKeyPath wsConfig

34+

35+ when (isJust configCertificateFile /= isJust configKeyFile) $

36+ throwIO $ ErrorCall "TLS_CERTIFICATE_PATH and TLS_KEY_PATH must be set in tandem"

37+

2738 _ <- forkFinally (launchServer serverConfig' (Just addressMVar) >> pure ()) (either throwIO pure)

2839 --wait for server to be listening

29− address <- takeMVar addressMVar

30− let Just (_, serverPort, _) = decodeEndPointAddress address

31− --this built-in server is apparently not meant for production use, but it's easier to test than starting up the wai or snap interfaces

32− WS.runServer wsHost (fromIntegral wsPort) (websocketProxyServer (read serverPort) serverHost)

40+ addr <- takeMVar addressMVar

41+ let port =

42+ case addr of

43+ SockAddrInet port' _ -> fromIntegral port'

44+ _ -> error "unsupported socket address (IPv4 only currently)"

45+ wsApp = websocketProxyServer port serverHost

46+ waiApp = WS.websocketsOr defaultConnectionOptions wsApp backupApp

47+ settings = warpSettings wsHost (fromIntegral wsPort)

48+

49+ case (configCertificateFile, configKeyFile) of

50+ (Just certificate, Just key) -> runTLS (tlsSettings certificate key) settings waiApp

51+ _ -> runSettings settings waiApp

52+

53+backupApp :: Application

54+backupApp _ respond = respond $ responseLBS status400 [] "Not a WebSocket request"

3355

56+warpSettings :: HostName -> Port -> Settings

57+warpSettings host port =

58+ setHost (fromString host)

59+ . setPort port

60+ . setServerName "project-m36"

61+ . setTimeout 3600

62+ . setGracefulShutdownTimeout (Just 5)

63+ $ defaultSettings

src/bin/TutorialD/Interpreter.hs+4−2

@@ -34,6 +34,7 @@ import Data.Monoid

3434import Data.List (isPrefixOf)

3535import Control.Exception

3636import System.Exit

37+import Data.Either (fromRight)

3738

3839{-

3940context ops are read-only operations which only operate on the database context (relvars and constraints)

@@ -77,7 +78,7 @@ safeInterpreterParserP = fmap RODatabaseContextOp (roDatabaseContextOperatorP <*

7778promptText :: Either RelationalError HeadName -> Either RelationalError SchemaName -> StringType

7879promptText eHeadName eSchemaName = "TutorialD (" <> transInfo <> "): "

7980 where

80− transInfo = either (const "<unknown>") id eHeadName <> "/" <> either (const "<no schema>") id eSchemaName

81+ transInfo = fromRight "<unknown>" eHeadName <> "/" <> fromRight "<no schema>" eSchemaName

8182

8283parseTutorialD :: T.Text -> Either ParserError ParsedOperation

8384parseTutorialD = parse interpreterParserP ""

@@ -215,6 +216,7 @@ evalTutorialDInteractive sessionId conn safe interactive expr = case expr of

215216 unsafeError = pure $ DisplayErrorResult "File I/O operation prohibited."

216217 barf :: RelationalError -> IO TutorialDOperatorResult

217218 barf (ScriptError (OtherScriptCompilationError errStr)) = pure (DisplayErrorResult (T.pack errStr))

219+ barf (ParseError err) = pure (DisplayErrorResult err)

218220 barf err = return $ DisplayErrorResult (T.pack (show err))

219221 eHandler io = do

220222 eErr <- io

@@ -227,7 +229,7 @@ type TutorialDExec = String

227229type CheckFS = Bool

228230

229231data InterpreterConfig = LocalInterpreterConfig PersistenceStrategy HeadName (Maybe TutorialDExec) [GhcPkgPath] CheckFS |

230− RemoteInterpreterConfig C.NodeId C.DatabaseName HeadName (Maybe TutorialDExec) CheckFS

232+ RemoteInterpreterConfig C.Hostname C.Port C.DatabaseName HeadName (Maybe TutorialDExec) CheckFS

231233

232234outputNotificationCallback :: C.NotificationCallback

233235outputNotificationCallback notName evaldNot = hPutStrLn stderr $ "Notification received " ++ show notName ++ ":\n" ++ "\n" ++ prettyEvaluatedNotification evaldNot

src/bin/TutorialD/Interpreter/Base.hs+29−8

@@ -12,11 +12,12 @@ module TutorialD.Interpreter.Base (

1212 where

1313import ProjectM36.Base

1414import ProjectM36.AtomType

15+import ProjectM36.Attribute as A

1516import ProjectM36.Relation

1617import ProjectM36.DataFrame

1718

1819#if MIN_VERSION_megaparsec(6,0,0)

19−import Text.Megaparsec.Char

20+import Text.Megaparsec.Char

2021import qualified Text.Megaparsec.Char.Lexer as Lex

2122import Text.Megaparsec

2223import Data.Void

@@ -30,7 +31,6 @@ import Data.Text hiding (count)

3031import System.Random

3132import qualified Data.Text as T

3233import qualified Data.List as L

33−import qualified Data.Vector as V

3434import qualified Data.Text.IO as TIO

3535import System.IO

3636import ProjectM36.Relation.Show.Term

@@ -44,6 +44,7 @@ import Data.List.NonEmpty as NE

4444import Data.Time.Clock

4545import Data.Time.Format

4646import Control.Monad (void)

47+import Data.Char

4748

4849#if !MIN_VERSION_megaparsec(7,0,0)

4950anySingle :: Parsec Void Text (Token Text)

@@ -81,8 +82,9 @@ type ParseStr = Text

8182type ParseStr = String

8283#endif

8384

85+-- consumes only horizontal spaces

8486spaceConsumer :: Parser ()

85−spaceConsumer = Lex.space (void spaceChar) (Lex.skipLineComment "--") (Lex.skipBlockComment "{-" "-}")

87+spaceConsumer = Lex.space space1 (Lex.skipLineComment "--") (Lex.skipBlockComment "{-" "-}")

8688

8789opChar :: Parser Char

8890opChar = oneOf (":!#$%&*+./<=>?\\^|-~" :: String)-- remove "@" so it can be used as attribute marker without spaces

@@ -135,11 +137,14 @@ arrow = symbol "->"

135137semi :: Parser Text

136138semi = symbol ";"

137139

140+nline :: Parser Text

141+nline = (T.singleton <$> newline) <|> crlf

142+

138143integer :: Parser Integer

139144#if MIN_VERSION_megaparsec(6,0,0)

140−integer = Lex.signed spaceConsumer Lex.decimal

145+integer = Lex.signed (pure ()) Lex.decimal <* spaceConsumer

141146#else

142−integer = Lex.signed spaceConsumer Lex.integer

147+integer = Lex.signed (pure ()) Lex.integer <* spaceConsumer

143148#endif

144149

145150natural :: Parser Integer

@@ -150,7 +155,7 @@ natural = Lex.integer <* spaceConsumer

150155#endif

151156

152157float :: Parser Double

153−float = Lex.float

158+float = Lex.float <* spaceConsumer

154159

155160capitalizedIdentifier :: Parser Text

156161capitalizedIdentifier =

@@ -163,8 +168,8 @@ uncapitalizedIdentifier =

163168showRelationAttributes :: Attributes -> Text

164169showRelationAttributes attrs = "{" <> T.concat (L.intersperse ", " $ L.map showAttribute attrsL) <> "}"

165170 where

166− showAttribute (Attribute name atomType) = name <> " " <> prettyAtomType atomType

167− attrsL = V.toList attrs

171+ showAttribute (Attribute name atomType') = name <> " " <> prettyAtomType atomType'

172+ attrsL = A.toList attrs

168173

169174type PromptLength = Int

170175

@@ -200,6 +205,9 @@ normalQuotedString = quote *> (T.pack <$> manyTill Lex.charLiteral quote)

200205quotedString :: Parser Text

201206quotedString = try tripleQuotedString <|> normalQuotedString

202207

208+quoted :: Parser a -> Parser a

209+quoted = between quote quote

210+

203211uuidP :: Parser U.UUID

204212uuidP = do

205213 uuidStart <- count 8 hexDigitChar

@@ -222,3 +230,16 @@ utcTimeP = do

222230 case parseTimeM True defaultTimeLocale "%Y-%m-%d %H:%M:%S" (T.unpack timeStr) of

223231 Nothing -> fail "invalid datetime input, use \"YYYY-MM-DD HH:MM:SS\""

224232 Just stamp' -> pure stamp'

233+

234+

235+colonOp :: Text -> Parser ()

236+colonOp opStr = do

237+ _ <- string opStr <* (void spaceChar <|> eof) <* spaceConsumer

238+ pure ()

239+

240+hex :: Parser Text

241+hex = takeWhileP (Just "hexadecimal")

242+ (\c ->

243+ isDigit c

244+ || (c >= 'a' && c <= 'f'))

245+

src/bin/TutorialD/Interpreter/DatabaseContextExpr.hs+3−2

@@ -53,8 +53,9 @@ multilineSep :: Parser T.Text

5353multilineSep = newline >> pure "\n"

5454

5555multipleDatabaseContextExprP :: Parser DatabaseContextExpr

56−multipleDatabaseContextExprP =

57− MultipleExpr <$> sepBy1 databaseContextExprP semi

56+multipleDatabaseContextExprP = do

57+ exprs <- filter (/= NoOperation) <$> sepBy1 databaseContextExprP semi

58+ pure (MultipleExpr exprs)

5859

5960insertP :: Parser DatabaseContextExpr

6061insertP = do

src/bin/TutorialD/Interpreter/Import/Base.hs+8−3

@@ -2,6 +2,8 @@

22module TutorialD.Interpreter.Import.Base where

33import ProjectM36.Base

44import ProjectM36.Error

5+import Text.URI (URI)

6+import Data.Text (Text)

57#if __GLASGOW_HASKELL__ < 804

68import Data.Monoid

79#endif

@@ -12,11 +14,14 @@ data RelVarDataImportOperator = RelVarDataImportOperator RelVarName FilePath (Re

1214instance Show RelVarDataImportOperator where

1315 show (RelVarDataImportOperator rv path _) = "RelVarDataImportOperator " <> show rv <> " " <> path

1416

17+type HashVerification = Maybe Text

18+

1519-- | import data into a database context

16−data DatabaseContextDataImportOperator = DatabaseContextDataImportOperator FilePath (FilePath -> IO (Either RelationalError DatabaseContextExpr))

20+data DatabaseContextDataImportOperator = DatabaseContextDataImportOperator URI HashVerification (URI -> HashVerification -> IO (Either RelationalError DatabaseContextExpr))

1721

1822instance Show DatabaseContextDataImportOperator where

19− show (DatabaseContextDataImportOperator path _) = "DatabaseContextDataImportOperator " <> path

23+ show (DatabaseContextDataImportOperator uri hash _) =

24+ "DatabaseContextDataImportOperator " <> show uri <> " " <> show hash

2025

2126-- perhaps create a structure to import a whole transaction graph section in the future

2227

@@ -24,4 +29,4 @@ evalRelVarDataImportOperator :: RelVarDataImportOperator -> TypeConstructorMappi

2429evalRelVarDataImportOperator (RelVarDataImportOperator relVarName path importFunc) tConsMap attrs = importFunc relVarName tConsMap attrs path

2530

2631evalDatabaseContextDataImportOperator :: DatabaseContextDataImportOperator -> IO (Either RelationalError DatabaseContextExpr)

27−evalDatabaseContextDataImportOperator (DatabaseContextDataImportOperator path importFunc) = importFunc path

32+evalDatabaseContextDataImportOperator (DatabaseContextDataImportOperator uri hash importFunc) = importFunc uri hash

src/bin/TutorialD/Interpreter/Import/BasicExamples.hs+2−2

@@ -20,8 +20,8 @@ importBasicExampleOperatorP :: Parser ImportBasicExampleOperator

2020importBasicExampleOperatorP = do

2121 reservedOp ":importexample"

2222 example <- identifier

23− if example == "date" then

23+ if example == "cjdate" then

2424 pure ImportBasicDateExampleOperator

2525 else

2626 fail "Unknown example name"

27−

27+

src/bin/TutorialD/Interpreter/Import/CSV.hs+3−3

@@ -14,10 +14,10 @@ importCSVRelation relVarName tConsMap attrs pathIn = do

1414 --TODO: handle filesystem errors

1515 csvData <- try (BS.readFile pathIn) :: IO (Either IOError BS.ByteString)

1616 case csvData of

17− Left err -> return $ Left (ImportError $ T.pack (show err))

17+ Left err -> pure $ Left (ImportError (ImportFileError (T.pack (show err))))

1818 Right csvData' -> case csvAsRelation attrs tConsMap csvData' of

19− Left err -> return $ Left (ParseError $ T.pack (show err))

20− Right csvRel -> return $ Right (Insert relVarName (ExistingRelation csvRel))

19+ Left err -> pure $ Left (ParseError $ T.pack (show err))

20+ Right csvRel -> pure $ Right (Insert relVarName (ExistingRelation csvRel))

2121

2222importCSVP :: Parser RelVarDataImportOperator

2323importCSVP = do

src/bin/TutorialD/Interpreter/Import/TutorialD.hs+70−17

@@ -9,25 +9,78 @@ import qualified Data.Text as T

99import Control.Exception

1010import qualified Data.ByteString as BS

1111import qualified Data.Text.Encoding as TE

12−--import a file containing TutorialD database context expressions

12+import qualified Text.URI as URI

13+import Text.URI (URI)

14+import Crypto.Hash.SHA256

15+import Data.ByteString.Base16 as B16

16+import Network.HTTP.Simple

17+import Network.HTTP.Types

18+--import a file containing TutorialD database context expressions via local files or HTTP/HTTPS

1319

14−importTutorialD :: FilePath -> IO (Either RelationalError DatabaseContextExpr)

15−importTutorialD pathIn = do

16− eTutdBytes <- try (BS.readFile pathIn) :: IO (Either IOError BS.ByteString)

17− case eTutdBytes of

18− Left err -> return $ Left (ImportError $ T.pack (show err))

19− Right tutdBytes ->

20− case TE.decodeUtf8' tutdBytes of

21− Left err -> pure (Left (ImportError $ T.pack (show err)))

22− Right tutdUtf8 ->

23− case parse multipleDatabaseContextExprP "import" tutdUtf8 of

24− --parseErrorPretty is new in megaparsec 5

25− Left err -> pure (Left (PM36E.ParseError (T.pack (show err))))

26− Right expr -> pure (Right expr)

27−

20+importTutorialDFromFile :: URI -> HashVerification -> IO (Either RelationalError DatabaseContextExpr)

21+importTutorialDFromFile fileURI mHash = do

22+ case URI.uriPath fileURI of

23+ Just (False, _) -> do

24+ eTutdBytes <- try (BS.readFile filePath) :: IO (Either IOError BS.ByteString)

25+ case eTutdBytes of

26+ Left err -> pure $ Left (ImportError (ImportFileError (T.pack (show err))))

27+ Right tutdBytes ->

28+ case validateBytes tutdBytes mHash of

29+ Left err -> pure (Left err)

30+ Right tutdBytes' -> importTutorialDBytes tutdBytes'

31+ _ -> pure (Left (ImportError (InvalidFileURIError (URI.render fileURI))))

32+ where

33+ filePath = drop (length ("file://" :: String)) (URI.renderStr fileURI)

34+

35+

36+importTutorialDBytes :: BS.ByteString -> IO (Either RelationalError DatabaseContextExpr)

37+importTutorialDBytes tutdBytes =

38+ case TE.decodeUtf8' tutdBytes of

39+ Left err -> pure (Left (ImportError (ImportFileDecodeError (T.pack (show err)))))

40+ Right tutdUtf8 ->

41+ case parse (multipleDatabaseContextExprP <* eof) "import" tutdUtf8 of

42+ --parseErrorPretty is new in megaparsec 5

43+ Left err -> pure (Left (PM36E.ParseError (T.pack (errorBundlePretty err))))

44+ Right expr -> pure (Right expr)

45+

46+importTutorialDViaHTTP :: URI -> HashVerification -> IO (Either RelationalError DatabaseContextExpr)

47+importTutorialDViaHTTP uri mHash = do

48+ reqURI <- parseRequest (URI.renderStr uri)

49+ response <- httpBS reqURI

50+ let scode = getResponseStatus response

51+ if scode == ok200 then

52+ let byteBody = getResponseBody response in

53+ case validateBytes byteBody mHash of

54+ Right byteBody' -> do

55+ importTutorialDBytes byteBody'

56+ Left err -> pure (Left err)

57+ else

58+ pure (Left (ImportError (ImportDownloadError (T.pack ("download failed: " <> show scode)))))

59+

60+validateBytes :: BS.ByteString -> HashVerification -> Either RelationalError BS.ByteString

61+validateBytes tutdBytes mHash =

62+ case mHash of

63+ Nothing -> pure tutdBytes

64+ Just expectedHashText ->

65+ case B16.decode (TE.encodeUtf8 expectedHashText) of

66+ Left _ -> Left (ImportError (InvalidSHA256Error expectedHashText))

67+ Right expectedHash | hashBytes == expectedHash -> pure tutdBytes

68+ | otherwise ->

69+ let p = TE.decodeUtf8 . B16.encode in

70+ Left (ImportError (SHA256MismatchError (p expectedHash) (p hashBytes)))

71+ where

72+ hashBytes = hash tutdBytes

73+

74+

2875tutdImportP :: Parser DatabaseContextDataImportOperator

2976tutdImportP = do

3077 reserved ":importtutd"

31− path <- quotedString

78+ uri <- quoted URI.parser

3279 spaceConsumer

33− return $ DatabaseContextDataImportOperator (T.unpack path) importTutorialD

80+ mhash <- optional (quoted hex)

81+ handler <- case URI.unRText <$> URI.uriScheme uri of

82+ Nothing -> fail "URI scheme missing"

83+ Just "file" -> pure importTutorialDFromFile

84+ Just scheme | scheme `elem` ["http", "https"] -> pure importTutorialDViaHTTP

85+ | otherwise -> fail ( "unsupported URI scheme: " <> show scheme)

86+ pure $ DatabaseContextDataImportOperator uri mhash handler

src/bin/TutorialD/Interpreter/RODatabaseContextOperator.hs+33−16

@@ -1,13 +1,16 @@

11{-# LANGUAGE GADTs #-}

22module TutorialD.Interpreter.RODatabaseContextOperator where

33import ProjectM36.Base

4+import ProjectM36.Relation

45import qualified ProjectM36.DataFrame as DF

56import ProjectM36.Error

7+import ProjectM36.Tuple

68import ProjectM36.InclusionDependency

79import qualified ProjectM36.Client as C

810import TutorialD.Interpreter.Base

911import TutorialD.Interpreter.RelationalExpr

1012import TutorialD.Interpreter.DatabaseContextExpr

13+import TutorialD.Printer

1114import Control.Monad.State

1215import qualified Data.Text as T

1316import ProjectM36.Relation.Show.Gnuplot

@@ -19,7 +22,7 @@ data RODatabaseContextOperator where

1922 ShowRelation :: RelationalExpr -> RODatabaseContextOperator

2023 PlotRelation :: RelationalExpr -> RODatabaseContextOperator

2124 ShowRelationType :: RelationalExpr -> RODatabaseContextOperator

22− ShowConstraint :: StringType -> RODatabaseContextOperator

25+ ShowConstraints :: StringType -> RODatabaseContextOperator

2326 ShowPlan :: DatabaseContextExpr -> RODatabaseContextOperator

2427 ShowTypes :: RODatabaseContextOperator

2528 ShowRelationVariables :: RODatabaseContextOperator

@@ -31,44 +34,44 @@ data RODatabaseContextOperator where

3134

3235typeP :: Parser RODatabaseContextOperator

3336typeP = do

34− reservedOp ":type"

37+ colonOp ":type"

3538 ShowRelationType <$> relExprP

3639

3740showRelP :: Parser RODatabaseContextOperator

3841showRelP = do

39− reservedOp ":showexpr"

42+ colonOp ":showexpr"

4043 ShowRelation <$> relExprP

4144

4245showPlanP :: Parser RODatabaseContextOperator

4346showPlanP = do

44− reservedOp ":showplan"

47+ colonOp ":showplan"

4548 ShowPlan <$> databaseContextExprP

4649

4750showTypesP :: Parser RODatabaseContextOperator

48−showTypesP = reserved ":showtypes" >> pure ShowTypes

51+showTypesP = colonOp ":showtypes" >> pure ShowTypes

4952

5053showRelationVariables :: Parser RODatabaseContextOperator

51−showRelationVariables = reserved ":showrelvars" >> pure ShowRelationVariables

54+showRelationVariables = colonOp ":showrelvars" >> pure ShowRelationVariables

5255

5356showAtomFunctionsP :: Parser RODatabaseContextOperator

54−showAtomFunctionsP = reserved ":showatomfunctions" >> pure ShowAtomFunctions

57+showAtomFunctionsP = colonOp ":showatomfunctions" >> pure ShowAtomFunctions

5558

5659showDatabaseContextFunctionsP :: Parser RODatabaseContextOperator

57−showDatabaseContextFunctionsP = reserved ":showdatabasecontextfunctions" >> pure ShowDatabaseContextFunctions

60+showDatabaseContextFunctionsP = colonOp ":showdatabasecontextfunctions" >> pure ShowDatabaseContextFunctions

5861

5962quitP :: Parser RODatabaseContextOperator

6063quitP = do

61− reservedOp ":quit"

64+ colonOp ":quit"

6265 return Quit

6366

6467showConstraintsP :: Parser RODatabaseContextOperator

6568showConstraintsP = do

66− reservedOp ":constraints"

67− ShowConstraint <$> option "" identifier

69+ colonOp ":constraints"

70+ ShowConstraints <$> option "" identifier

6871

6972plotRelExprP :: Parser RODatabaseContextOperator

7073plotRelExprP = do

71− reserved ":plotexpr"

74+ colonOp ":plotexpr"

7275 PlotRelation <$> relExprP

7376

7477roDatabaseContextOperatorP :: Parser RODatabaseContextOperator

@@ -106,15 +109,16 @@ evalRODatabaseContextOp sessionId conn (PlotRelation expr) = do

106109 err <- plotRelation rel

107110 when (isJust err) $ print err

108111

109−evalRODatabaseContextOp sessionId conn (ShowConstraint name) = do

112+evalRODatabaseContextOp sessionId conn (ShowConstraints name) = do

110113 eIncDeps <- C.inclusionDependencies sessionId conn

111114 let val = case eIncDeps of

112115 Left err -> Left err

113116 Right incDeps -> case name of

114− "" -> inclusionDependenciesAsRelation incDeps

117+ "" -> inclusionDependenciesAsRelation incDeps >>= renderRelExprsInIncDeps

115118 depName -> case M.lookup depName incDeps of

116119 Nothing -> Left (InclusionDependencyNameNotInUseError depName)

117− Just dep -> inclusionDependenciesAsRelation (M.singleton depName dep)

120+ Just dep ->

121+ inclusionDependenciesAsRelation (M.singleton depName dep) >>= renderRelExprsInIncDeps

118122 pure $ case val of

119123 Left err -> DisplayErrorResult (T.pack (show err))

120124 Right rel -> DisplayRelationResult rel

@@ -164,7 +168,7 @@ interpretRODatabaseContextOp sessionId conn tutdstring = case parse roDatabaseCo

164168

165169showDataFrameP :: Parser RODatabaseContextOperator

166170showDataFrameP = do

167− reservedOp ":showdataframe"

171+ colonOp ":showdataframe"

168172 relExpr <- relExprP

169173 reservedOp "orderby"

170174 attrOrdersExpr <- attrOrdersExprP

@@ -191,3 +195,16 @@ attrOrderExprP = DF.AttributeOrderExpr <$> identifier <*> orderP

191195

192196orderP :: Parser DF.Order

193197orderP = try (reservedOp "ascending" >> pure DF.AscendingOrder) <|> try (reservedOp "descending" >> pure DF.DescendingOrder) <|> pure DF.AscendingOrder

198+

199+-- render RelationalExprAtoms as TutorialD

200+renderRelExprsInIncDeps :: Relation -> Either RelationalError Relation

201+renderRelExprsInIncDeps = relMogrify tupMapper attrs

202+ where

203+ tupMapper tup = pure $ mkRelationTupleFromMap (M.map mapper (tupleToMap tup))

204+ mapper (RelationalExprAtom expr) = TextAtom (T.pack (show (prettyRelationalExpr expr)))

205+ mapper atom = atom

206+ attrs = C.attributesFromList [Attribute "name" TextAtomType,

207+ Attribute "sub" TextAtomType,

208+ Attribute "super" TextAtomType

209+ ]

210+

src/bin/TutorialD/Interpreter/RelationalExpr.hs+27−8

@@ -20,9 +20,18 @@ attributeListP :: RelationalMarkerExpr a => Parser (AttributeNamesBase a)

2020attributeListP =

2121 (reservedOp "all but" >>

2222 InvertedAttributeNames . S.fromList <$> sepBy attributeNameP comma) <|>

23+

2324 (reservedOp "all from" >>

2425 RelationalExprAttributeNames <$> relExprP) <|>

25− (AttributeNames . S.fromList <$> sepBy attributeNameP comma)

26+

27+ (reservedOp "union of" >>

28+ UnionAttributeNames <$> braces attributeListP <*> braces attributeListP) <|>

29+

30+ (reservedOp "intersection of" >>

31+ IntersectAttributeNames <$> braces attributeListP <*> braces attributeListP) <|>

32+

33+ (AttributeNames . S.fromList <$> sepBy attributeNameP comma)

34+

2635

2736makeRelationP :: RelationalMarkerExpr a => Parser (RelationalExprBase a)

2837makeRelationP = do

@@ -102,7 +111,11 @@ ungroupP = do

102111extendP :: RelationalMarkerExpr a => Parser (RelationalExprBase a -> RelationalExprBase a)

103112extendP = do

104113 reservedOp ":"

105− Extend <$> braces extendTupleExpressionP

114+ extends <- braces (sepBy extendTupleExpressionP comma)

115+ case extends of

116+ [] -> pure (Restrict TruePredicate)

117+ extends' ->

118+ pure $ \expr -> foldl (flip Extend) expr extends'

106119

107120semijoinP :: RelationalMarkerExpr a => Parser (RelationalExprBase a -> RelationalExprBase a -> RelationalExprBase a)

108121semijoinP = do

@@ -129,7 +142,8 @@ relOperators = [

129142 [InfixL antijoinP],

130143 [InfixL (reservedOp "union" >> return Union)],

131144 [InfixL (reservedOp "minus" >> return Difference)],

132− [InfixN (reservedOp "=" >> return Equals)],

145+ [InfixN (reservedOp "=" >> return Equals),

146+ InfixN (reservedOp "/=" >> return NotEquals)],

133147 [Postfix extendP]

134148 ]

135149

@@ -200,8 +214,9 @@ consumeAtomExprP consume = try functionAtomExprP <|>

200214 try (parens (constructedAtomExprP True)) <|>

201215 constructedAtomExprP consume <|>

202216 attributeAtomExprP <|>

203− nakedAtomExprP <|>

217+ try nakedAtomExprP <|>

204218 relationalAtomExprP

219+

205220

206221attributeAtomExprP :: Parser (AtomExprBase a)

207222attributeAtomExprP = do

@@ -220,7 +235,7 @@ constructedAtomExprP consume = do

220235-- used only for primitive type parsing ?

221236atomP :: Parser Atom

222237atomP = stringAtomP <|>

223− doubleAtomP <|>

238+ try doubleAtomP <|>

224239 integerAtomP <|>

225240 boolAtomP

226241

@@ -235,15 +250,19 @@ stringAtomP :: Parser Atom

235250stringAtomP = TextAtom <$> quotedString

236251

237252doubleAtomP :: Parser Atom

238−doubleAtomP = DoubleAtom <$> try float

253+doubleAtomP = DoubleAtom <$> float

239254

240255integerAtomP :: Parser Atom

241256integerAtomP = IntegerAtom <$> integer

242257

243258boolAtomP :: Parser Atom

244259boolAtomP = do

245− val <- char 't' <|> char 'f'

246− return $ BoolAtom (val == 't')

260+ v <- identifier

261+ if v == "t" || v == "f" then

262+ pure $ BoolAtom (v == "t")

263+ else

264+ fail "invalid boolAtom"

265+

247266

248267relationAtomExprP :: RelationalMarkerExpr a => Parser (AtomExprBase a)

249268relationAtomExprP = RelationAtomExpr <$> makeRelationP

src/bin/TutorialD/Printer.hsnew file+165

@@ -0,0 +1,165 @@

1+{-# OPTIONS_GHC -fno-warn-orphans #-}

2+{-# LANGUAGE FlexibleInstances #-}

3+{-# LANGUAGE OverloadedStrings #-}

4+{-# LANGUAGE ScopedTypeVariables #-}

5+{-# LANGUAGE TypeApplications #-}

6+module TutorialD.Printer where

7+import ProjectM36.Base

8+import ProjectM36.Attribute as A hiding (null)

9+import Data.Text.Prettyprint.Doc

10+import qualified Data.Set as S hiding (fromList)

11+import qualified Data.Vector as V

12+import qualified Data.Map.Strict as M

13+import Data.Time.Calendar

14+import Data.Time.Clock.POSIX

15+import qualified Data.ByteString.Base64 as B64

16+import qualified Data.Text.Encoding as TE

17+

18+instance Pretty Atom where

19+ pretty (IntegerAtom x) = pretty x

20+ pretty (IntAtom x) = "int" <> parensList [pretty x]

21+ pretty (DoubleAtom x) = pretty x

22+ pretty (TextAtom x) = dquotes (pretty x)

23+ pretty (DayAtom x) = "fromGregorian" <> parensList [pretty a, pretty b, pretty c]

24+ where

25+ (a,b,c) = toGregorian x

26+ pretty (DateTimeAtom time) = "dateTimeFromEpochSeconds" <> parensList [pretty @Integer (round (utcTimeToPOSIXSeconds time))]

27+ pretty (ByteStringAtom bs) = "bytestring" <> parensList [dquotes (pretty (TE.decodeUtf8 (B64.encode bs)))]

28+ pretty (BoolAtom x) = if x then "t" else "f"

29+ pretty (RelationAtom x) = pretty x

30+ pretty (RelationalExprAtom re) = pretty re

31+ pretty (ConstructedAtom n _ as) = pretty n <+> prettyList as

32+

33+instance Pretty AtomExpr where

34+ pretty (AttributeAtomExpr attrName) = pretty attrName

35+ pretty (NakedAtomExpr atom) = pretty atom

36+ pretty (FunctionAtomExpr atomFuncName' atomExprs _) = pretty atomFuncName' <> prettyAtomExprsAsArguments atomExprs

37+ pretty (RelationAtomExpr relExpr) = pretty relExpr

38+ pretty (ConstructedAtomExpr dName [] _) = pretty dName

39+ pretty (ConstructedAtomExpr dName atomExprs _) = pretty dName <+> hsep (map prettyAtomExpr atomExprs)

40+

41+prettyAtomExpr :: AtomExpr -> Doc ann

42+prettyAtomExpr atomExpr =

43+ case atomExpr of

44+ AttributeAtomExpr attrName -> "@" <> pretty attrName

45+ ConstructedAtomExpr dConsName [] () -> pretty dConsName

46+ ConstructedAtomExpr dConsName atomExprs () -> parens (pretty dConsName <+> hsep (map prettyAtomExpr atomExprs))

47+ _ -> pretty atomExpr

48+

49+prettyAtomExprsAsArguments :: [AtomExpr] -> Doc ann

50+prettyAtomExprsAsArguments = align . parensList . map addAt

51+ where addAt (atomExpr :: AtomExpr) =

52+ case atomExpr of

53+ AttributeAtomExpr attrName -> "@" <> pretty attrName

54+ _ -> pretty atomExpr

55+

56+instance Pretty TupleExpr where

57+ pretty (TupleExpr map') = "tuple" <> bracesList (Prelude.map (\(attrName,atom)-> pretty attrName <+> pretty atom) (M.toList map'))

58+

59+instance Pretty RelationTuple where

60+ pretty (RelationTuple attrs atoms) = "tuple" <> bracesList (zipWith (\x y-> pretty x <+> pretty y) (V.toList (attributeNames attrs)) (V.toList atoms))

61+

62+instance Pretty Relation where

63+ pretty (Relation attrs tupSet) | attrs == mempty && null (asList tupSet) = "false"

64+ pretty (Relation attrs tupSet) | attrs == mempty && asList tupSet == [RelationTuple mempty mempty] = "true"

65+ pretty (Relation attrs tupSet) = "relation" <> prettyBracesList (A.toList attrs) <> prettyBracesList (asList tupSet)

66+

67+instance Pretty Attribute where

68+ pretty (Attribute n aTy) = pretty n <+> pretty (show aTy) -- workaround

69+

70+instance Pretty RelationalExpr where

71+ pretty (RelationVariable n _) = pretty n

72+ pretty (ExistingRelation r) = pretty r

73+ pretty (NotEquals a b) = pretty' a <+> "!=" <+> pretty' b

74+ pretty (Equals a b) = pretty' a <+> "==" <+> pretty' b

75+ pretty (Project ns r) = pretty' (ignoreProjects r) <> pretty ns

76+ pretty (Extend ext r) = collectExtends r <> pretty ext <> "}"

77+ pretty (MakeRelationFromExprs Nothing (TupleExprs () tupExprs)) = "relation" <> prettyBracesList tupExprs

78+ pretty (MakeRelationFromExprs (Just attrExprs) (TupleExprs () tupExprs)) = "relation" <> prettyBracesList attrExprs <> prettyBracesList tupExprs

79+ pretty (MakeStaticRelation attrs tupSet) = "relation" <> prettyBracesList (A.toList attrs) <> prettyBracesList (asList tupSet)

80+ pretty (Union a b) = parens $ pretty' a <+> "union" <+> pretty' b

81+ pretty (Join a b) = parens $ pretty' a <+> "join" <+> pretty' b

82+ pretty (Rename n1 n2 relExpr) = parens $ pretty relExpr <+> "rename" <+> braces (pretty n1 <+> "as" <+> pretty n2)

83+ pretty (Difference a b) = parens $ pretty' a <+> "minus" <+> pretty' b

84+ pretty (Group attrNames attrName relExpr) = parens $ pretty relExpr <+> "group" <+> parens (pretty attrNames <+> "as" <+> pretty attrName)

85+ pretty (Ungroup attrName relExpr) = parens $ pretty' relExpr <+> "ungroup" <+> pretty attrName

86+ pretty (Restrict resPreExpr relExpr) = parens $ pretty' relExpr <+> "where" <+> pretty resPreExpr

87+ pretty (With pairs a) = "with" <+> parensList (map (\(name,expr)-> pretty name <+> "as" <+> pretty expr) pairs) <+> pretty' a

88+

89+-- relvar:{a:=?}:{b:=?}:... in ADTs => relvar:{a:=?, b:=?, ...} in Doc ann

90+collectExtends :: RelationalExpr -> Doc ann

91+collectExtends (Extend ext r) = collectExtends r <> pretty ext <> ", "

92+collectExtends r = pretty r <> ":{"

93+

94+--relvar{a,b,c,...}{a,b,...}..{a} => relvar{a}

95+ignoreProjects :: RelationalExpr -> RelationalExpr

96+ignoreProjects (Project _ r) = ignoreProjects r

97+ignoreProjects r = r

98+

99+prettyRelationalExpr :: RelationalExpr -> Doc n

100+prettyRelationalExpr (RelationVariable n _) = pretty n

101+prettyRelationalExpr r = parens (pretty r)

102+

103+pretty' :: RelationalExpr -> Doc n

104+pretty' = prettyRelationalExpr

105+

106+instance Pretty AttributeNames where

107+ pretty (AttributeNames attrNames) = prettyBracesList (S.toList attrNames)

108+ pretty (InvertedAttributeNames attrNames) = braces $ "all but" <+> concatWith (surround ", ") (map pretty (S.toList attrNames))

109+ pretty (RelationalExprAttributeNames relExpr) = braces $ "all from" <+> pretty relExpr

110+ pretty (UnionAttributeNames aAttrNames bAttrNames) = braces ("union of" <+> pretty aAttrNames <+> pretty bAttrNames)

111+ pretty (IntersectAttributeNames aAttrNames bAttrNames) = braces ("intersection of" <+> pretty aAttrNames <+> pretty bAttrNames)

112+

113+instance Pretty AttributeExpr where

114+ pretty (NakedAttributeExpr attr) = pretty attr

115+ pretty (AttributeAndTypeNameExpr name typeCons _) = pretty name <+> pretty typeCons

116+

117+instance Pretty TypeConstructor where

118+ pretty (ADTypeConstructor tcName []) = pretty tcName

119+ pretty (ADTypeConstructor tcName tConsArgs) = pretty tcName <+> hsep (map pretty tConsArgs)

120+ pretty (PrimitiveTypeConstructor tcName atomType') = pretty tcName <+> pretty atomType'

121+ pretty (RelationAtomTypeConstructor attrExprs) = "relation" <> prettyBracesList attrExprs

122+ pretty (TypeVariable x) = pretty x

123+

124+instance Pretty AtomType where

125+ pretty IntAtomType = "Int"

126+ pretty IntegerAtomType = "Integer"

127+ pretty DoubleAtomType = "Double"

128+ pretty TextAtomType = "Text"

129+ pretty DayAtomType = "Day"

130+ pretty DateTimeAtomType = "DateTime"

131+ pretty ByteStringAtomType = "ByteString"

132+ pretty BoolAtomType = "Bool"

133+ pretty (RelationAtomType attrs) = "relation " <+> prettyBracesList (A.toList attrs)

134+ pretty (ConstructedAtomType tcName tvMap) = pretty tcName <+> hsep (map pretty (M.toList tvMap)) --order matters

135+ pretty RelationalExprAtomType = "RelationalExpr"

136+ pretty (TypeVariableType x) = pretty x

137+

138+instance Pretty ExtendTupleExpr where

139+ pretty (AttributeExtendTupleExpr attrName atomExpr) = pretty attrName <> ":=" <> pretty atomExpr

140+

141+

142+instance Pretty RestrictionPredicateExpr where

143+ pretty TruePredicate = "true"

144+ pretty (AndPredicate a b) = pretty a <+> "and" <+> pretty b

145+ pretty (OrPredicate a b) = pretty a <+> "or" <+> pretty b

146+ pretty (NotPredicate a) = "not" <+> pretty a

147+ pretty (RelationalExprPredicate relExpr) = pretty relExpr

148+ pretty (AtomExprPredicate atomExpr) = pretty atomExpr

149+ pretty (AttributeEqualityPredicate attrName atomExpr) = pretty attrName <> "=" <> pretty atomExpr

150+

151+instance Pretty WithNameExpr where

152+ pretty (WithNameExpr name _) = pretty name

153+

154+bracesList :: [Doc ann] -> Doc ann

155+bracesList = group . encloseSep (flatAlt "{ " "{") (flatAlt " }" "}") ", "

156+

157+prettyBracesList :: Pretty a => [a] -> Doc ann

158+prettyBracesList = align . bracesList . map pretty

159+

160+parensList :: [Doc ann] -> Doc ann

161+parensList = group . encloseSep (flatAlt "( " "(") (flatAlt " )" ")") ", "

162+

163+prettyParensList :: Pretty a => [a] -> Doc ann

164+prettyParensList = align . parensList . map pretty

165+

src/bin/TutorialD/tutd.hs+14−18

@@ -5,8 +5,10 @@ import ProjectM36.Client

55import ProjectM36.Server.ParseArgs

66import ProjectM36.Server

77import System.IO

8+import GHC.IO.Encoding

89import Options.Applicative

910import System.Exit

11+import Control.Monad

1012#if __GLASGOW_HASKELL__ < 804

1113import Data.Monoid

1214#endif

@@ -20,7 +22,7 @@ import qualified Data.Text as T

2022

2123parseArgs :: Parser InterpreterConfig

2224parseArgs = LocalInterpreterConfig <$> parsePersistenceStrategy <*> parseHeadName <*> parseTutDExec <*> many parseGhcPkgPath <*> parseCheckFS <|>

23− RemoteInterpreterConfig <$> parseNodeId <*> parseDatabaseName <*> parseHeadName <*> parseTutDExec <*> parseCheckFS

25+ RemoteInterpreterConfig <$> parseHostname "127.0.0.1" <*> parsePort defaultServerPort <*> parseDatabaseName <*> parseHeadName <*> parseTutDExec <*> parseCheckFS

2426

2527parseHeadName :: Parser HeadName

2628parseHeadName = option auto (long "head" <>

@@ -29,19 +31,6 @@ parseHeadName = option auto (long "head" <>

2931 value "master"

3032 )

3133

32−parseNodeId :: Parser NodeId

33−parseNodeId = createNodeId <$>

34− strOption (long "host" <>

35− short 'h' <>

36− help "Remote host name" <>

37− metavar "HOSTNAME" <>

38− value "127.0.0.1") <*>

39− option auto (long "port" <>

40− metavar "PORT NUMBER" <>

41− short 'p' <>

42− help "Remote port" <>

43− value defaultServerPort)

44−

4534--just execute some tutd and exit

4635parseTutDExec :: Parser (Maybe TutorialDExec)

4736parseTutDExec = optional $ strOption (long "exec-tutd" <>

@@ -55,19 +44,19 @@ opts = info (parseArgs <**> helpOption) idm

5544

5645connectionInfoForConfig :: InterpreterConfig -> ConnectionInfo

5746connectionInfoForConfig (LocalInterpreterConfig pStrategy _ _ ghcPkgPaths _) = InProcessConnectionInfo pStrategy outputNotificationCallback ghcPkgPaths

58−connectionInfoForConfig (RemoteInterpreterConfig remoteNodeId remoteDBName _ _ _) = RemoteProcessConnectionInfo remoteDBName remoteNodeId outputNotificationCallback

47+connectionInfoForConfig (RemoteInterpreterConfig remoteHost remotePort remoteDBName _ _ _) = RemoteConnectionInfo remoteDBName remoteHost (show remotePort) outputNotificationCallback

5948

6049headNameForConfig :: InterpreterConfig -> HeadName

6150headNameForConfig (LocalInterpreterConfig _ headn _ _ _) = headn

62−headNameForConfig (RemoteInterpreterConfig _ _ headn _ _) = headn

51+headNameForConfig (RemoteInterpreterConfig _ _ _ headn _ _) = headn

6352

6453execTutDForConfig :: InterpreterConfig -> Maybe String

6554execTutDForConfig (LocalInterpreterConfig _ _ t _ _) = t

66−execTutDForConfig (RemoteInterpreterConfig _ _ _ t _) = t

55+execTutDForConfig (RemoteInterpreterConfig _ _ _ _ t _) = t

6756

6857checkFSForConfig :: InterpreterConfig -> Bool

6958checkFSForConfig (LocalInterpreterConfig _ _ _ _ c) = c

70−checkFSForConfig (RemoteInterpreterConfig _ _ _ _ c) = c

59+checkFSForConfig (RemoteInterpreterConfig _ _ _ _ _ c) = c

7160

7261persistenceStrategyForConfig :: InterpreterConfig -> Maybe PersistenceStrategy

7362persistenceStrategyForConfig (LocalInterpreterConfig strat _ _ _ _) = Just strat

@@ -86,8 +75,15 @@ printWelcome = do

8675 putStrLn "A full tutorial is available at:"

8776 putStrLn "https://github.com/agentm/project-m36/blob/master/docs/tutd_tutorial.markdown"

8877

78+-- | If the locale is set to ASCII, upgrade it to UTF-8 because tutd outputs UTF-8-encoded attributes. This is especially important in light docker images where the locale data may be missing.

79+setLocaleIfNecessary :: IO ()

80+setLocaleIfNecessary = do

81+ l <- getLocaleEncoding

82+ when (textEncodingName l == "ASCII") (setLocaleEncoding utf8)

83+

8984main :: IO ()

9085main = do

86+ setLocaleIfNecessary

9187 interpreterConfig <- execParser opts

9288 let connInfo = connectionInfoForConfig interpreterConfig

9389 fscheck <- checkFSType (checkFSForConfig interpreterConfig) (fromMaybe NoPersistence (persistenceStrategyForConfig interpreterConfig))

src/lib/ProjectM36/Arbitrary.hs+6−1

@@ -9,6 +9,7 @@ import ProjectM36.AtomType

99import ProjectM36.Attribute (atomType)

1010import ProjectM36.DataConstructorDef as DCD

1111import ProjectM36.DataTypes.Interval

12+import ProjectM36.Relation

1213import qualified Data.Vector as V

1314import Data.Text (Text)

1415import Test.QuickCheck

@@ -48,6 +49,10 @@ arbitrary' ByteStringAtomType =

4849

4950arbitrary' BoolAtomType =

5051 Right . BoolAtom <$> lift (arbitrary :: Gen Bool)

52+

53+arbitrary' RelationalExprAtomType =

54+ pure (Right (RelationalExprAtom (ExistingRelation relationTrue))) -- don't bother with arbitrary relational expressions

55+

5156arbitrary' constructedAtomType@(ConstructedAtomType tcName tvMap)

5257 --special-casing for Interval type

5358 | isIntervalAtomType constructedAtomType = createArbitraryInterval (intervalSubType constructedAtomType)

@@ -79,7 +84,7 @@ maybeToRight y Nothing = Left y

7984arbitraryRelationTuple :: Attributes -> WithTCMap Gen (Either RelationalError RelationTuple)

8085arbitraryRelationTuple attris = do

8186 tcMap <- ask

82− listOfMaybeAType <- lift $ mapM ((\aTy -> runReaderT (arbitrary' aTy) tcMap) . atomType) (V.toList attris)

87+ listOfMaybeAType <- lift $ mapM ((\aTy -> runReaderT (arbitrary' aTy) tcMap) . atomType) (V.toList (attributesVec attris))

8388 case sequence listOfMaybeAType of

8489 Left err -> pure $ Left err

8590 Right listOfAttr -> do

src/lib/ProjectM36/Atom.hs+1

@@ -20,6 +20,7 @@ atomToText (DayAtom i) = (T.pack . show) i

2020atomToText (DateTimeAtom i) = (T.pack . show) i

2121atomToText (ByteStringAtom i) = (T.pack . show) i

2222atomToText (BoolAtom i) = (T.pack . show) i

23+atomToText (RelationalExprAtom re) = (T.pack . show) re

2324

2425atomToText (RelationAtom i) = (T.pack . show) i

2526atomToText (ConstructedAtom dConsName typ atoms)

src/lib/ProjectM36/AtomFunction.hs+7−6

@@ -1,6 +1,7 @@

11{-# LANGUAGE CPP #-}

22module ProjectM36.AtomFunction where

33import ProjectM36.Base

4+import ProjectM36.Serialise.Base ()

45import ProjectM36.Error

56import ProjectM36.Relation

67import ProjectM36.AtomType

@@ -10,7 +11,7 @@ import qualified ProjectM36.Attribute as A

1011import qualified Data.HashSet as HS

1112import qualified Data.Text as T

1213import qualified Data.ByteString.Lazy as BL

13−import Data.Binary as B

14+import Codec.Winery

1415

1516foldAtomFuncType :: AtomType -> AtomType -> [AtomType]

1617--the underscore in the attribute name means that any attributes are acceptable

@@ -91,10 +92,10 @@ atomFunctionsAsRelation funcs = mkRelationFromList attrs tups

9192

9293--for calculating the merkle hash

9394hashBytes :: AtomFunction -> BL.ByteString

94−hashBytes func = mconcat [B.encode (atomFuncName func),

95− B.encode (atomFuncType func),

96− bodyBin

97− ]

95+hashBytes func = BL.fromChunks [serialise (atomFuncName func),

96+ serialise (atomFuncType func),

97+ bodyBin

98+ ]

9899 where

99100 bodyBin = case atomFuncBody func of

100− AtomFunctionBody mScript _ -> B.encode mScript

101+ AtomFunctionBody mScript _ -> serialise mScript

src/lib/ProjectM36/AtomFunctionError.hs+1−2

@@ -1,6 +1,5 @@

11{-# LANGUAGE DeriveGeneric, DeriveAnyClass #-}

22module ProjectM36.AtomFunctionError where

3−import Data.Binary

43import GHC.Generics

54import Control.DeepSeq

65import Data.Text

@@ -14,5 +13,5 @@ data AtomFunctionError = AtomFunctionUserError String |

1413 AtomTypeDoesNotSupportOrderingError Text |

1514 AtomTypeDoesNotSupportIntervalError Text |

1615 AtomFunctionBytesDecodingError String

17− deriving(Generic, Eq, Show, Binary, NFData)

16+ deriving(Generic, Eq, Show, NFData)

1817

src/lib/ProjectM36/AtomType.hs+8−7

@@ -211,7 +211,7 @@ isValidAtomTypeForTypeConstructor (ConstructedAtomType tConsName _) (ADTypeConst

211211

212212isValidAtomTypeForTypeConstructor (RelationAtomType attrs) (RelationAtomTypeConstructor attrExprs) tConsMap = do

213213 evaldAtomTypes <- mapM (\expr -> atomTypeForAttributeExpr expr tConsMap M.empty) attrExprs

214− mapM_ (uncurry resolveAtomType) (zip (map A.atomType (V.toList attrs)) evaldAtomTypes)

214+ mapM_ (uncurry resolveAtomType) (zip (A.atomTypesList attrs) evaldAtomTypes)

215215isValidAtomTypeForTypeConstructor aType tCons _ = Left (AtomTypeTypeConstructorReconciliationError aType (TC.name tCons))

216216

217217findTypeConstructor :: TypeConstructorName -> TypeConstructorMapping -> Maybe (TypeConstructorDef, [DataConstructorDef])

@@ -295,7 +295,7 @@ resolveTypeInAtom _ atom _ = Right atom

295295-- Example: "Nothing" does not specify the the argument in "Maybe a", so allow delayed resolution in the tuple before it is added to the relation. Note that this resolution could cause a type error. Hardly a Hindley-Milner system.

296296resolveTypesInTuple :: Attributes -> TypeConstructorMapping -> RelationTuple -> Either RelationalError RelationTuple

297297resolveTypesInTuple resolvedAttrs tConss (RelationTuple _ tupAtoms) = do

298− newAtoms <- mapM (\(atom, resolvedType) -> resolveTypeInAtom resolvedType atom tConss) (zip (V.toList tupAtoms) $ map A.atomType (V.toList resolvedAttrs))

298+ newAtoms <- mapM (\(atom, resolvedType) -> resolveTypeInAtom resolvedType atom tConss) (zip (V.toList tupAtoms) $ A.atomTypesList resolvedAttrs)

299299 Right (RelationTuple resolvedAttrs (V.fromList newAtoms))

300300

301301-- | Validate that the type is provided with complete type variables for type constructors.

@@ -314,7 +314,7 @@ validateAtomType typ@(ConstructedAtomType tConsName tVarMap) tConss =

314314 _ -> Right ()

315315validateAtomType (RelationAtomType attrs) tConss =

316316 mapM_ (\attr ->

317− validateAtomType (A.atomType attr) tConss) (V.toList attrs)

317+ validateAtomType (A.atomType attr) tConss) (attributesVec attrs)

318318validateAtomType (TypeVariableType x) _ = Left (TypeConstructorTypeVarMissing x)

319319validateAtomType _ _ = pure ()

320320

@@ -325,7 +325,7 @@ validateAttributes tConss attrs =

325325 else

326326 pure ()

327327 where

328− errs = lefts $ map ((`validateAtomType` tConss) . A.atomType) (V.toList attrs)

328+ errs = lefts $ map (`validateAtomType` tConss) (A.atomTypesList attrs)

329329

330330--ensure that all type vars are fully resolved

331331validateTypeVarMap :: TypeVarMap -> TypeConstructorMapping -> Either RelationalError ()

@@ -358,7 +358,7 @@ atomTypeVerify x@(RelationAtomType attrs1) y@(RelationAtomType attrs2) = do

358358 if notElem "_" [name1, name2] && name1 /= name2 then

359359 Left $ AtomTypeMismatchError x y

360360 else

361− atomTypeVerify (A.atomType attr1) (A.atomType attr2)) $ V.toList (V.zip attrs1 attrs2)

361+ atomTypeVerify (A.atomType attr1) (A.atomType attr2)) $ V.toList (V.zip (attributesVec attrs1) (attributesVec attrs2))

362362 return x

363363atomTypeVerify x y = if x == y then

364364 Right x

@@ -375,7 +375,7 @@ typeVarMapsVerify a b = M.keysSet a == M.keysSet b && (length . rights) zipped =

375375 (M.toAscList b)

376376

377377prettyAtomType :: AtomType -> T.Text

378−prettyAtomType (RelationAtomType attrs) = "relation {" `T.append` T.intercalate "," (map prettyAttribute (V.toList attrs)) `T.append` "}"

378+prettyAtomType (RelationAtomType attrs) = "relation {" `T.append` T.intercalate "," (map prettyAttribute (V.toList (attributesVec attrs))) `T.append` "}"

379379prettyAtomType (ConstructedAtomType tConsName typeVarMap) = tConsName `T.append` T.concat (map showTypeVars (M.toList typeVarMap))

380380 where

381381 showTypeVars (_, TypeVariableType x) = " " <> x

@@ -442,12 +442,13 @@ isResolvedType typ =

442442 DateTimeAtomType -> True

443443 ByteStringAtomType -> True

444444 BoolAtomType -> True

445+ RelationalExprAtomType -> True

445446 RelationAtomType attrs -> isResolvedAttributes attrs

446447 ConstructedAtomType _ tvMap -> all isResolvedType (M.elems tvMap)

447448 TypeVariableType _ -> False

448449

449450isResolvedAttributes :: Attributes -> Bool

450−isResolvedAttributes attrs = all isResolvedAttribute (V.toList attrs)

451+isResolvedAttributes attrs = all isResolvedAttribute (V.toList (attributesVec attrs))

451452

452453isResolvedAttribute :: Attribute -> Bool

453454isResolvedAttribute = isResolvedType . A.atomType

src/lib/ProjectM36/Atomable.hs+4−20

@@ -13,29 +13,16 @@ import qualified Data.Map as M

1313import qualified Data.Text as T

1414import qualified Data.Vector as V

1515import Control.DeepSeq (NFData)

16−import Data.Binary

1716import Control.Applicative

1817import Data.Time.Calendar

1918import Data.ByteString (ByteString)

2019import Data.Time.Clock

2120import Data.Proxy

2221import qualified Data.List.NonEmpty as NE

22+import Codec.Winery

2323

24−--also add haskell scripting atomable support

25−--rename this module to Atomable along with test

26−

27−{-

28−data Test1T = Test1C Int

29− deriving (Generic, Show, Eq, Binary, NFData, Atomable)

30−

31−data Test2T = Test2C Int Int

32− deriving (Generic, Show, Eq, Binary, NFData, Atomable)

33−

34−data Test3T = Test3Ca | Test3Cb

35− deriving (Generic, Show, Eq, Binary, NFData, Atomable)

36−-}

3724-- | All database values ("atoms") adhere to the 'Atomable' typeclass. This class is derivable allowing new datatypes to be easily marshaling between Haskell values and database values.

38−class (Eq a, NFData a, Binary a, Show a) => Atomable a where

25+class (Eq a, NFData a, Serialise a, Show a) => Atomable a where

3926 toAtom :: a -> Atom

4027 default toAtom :: (Generic a, AtomableG (Rep a)) => a -> Atom

4128 toAtom v = toAtomG (from v) (toAtomTypeG (from v))

@@ -165,10 +152,6 @@ instance Atomable a => Atomable (NE.NonEmpty a) where

165152 toAtomType _ = ConstructedAtomType "NonEmptyList" (M.singleton "a" (toAtomType (Proxy :: Proxy a)))

166153 toAddTypeExpr _ = NoOperation

167154

168−#if !MIN_VERSION_binary(0,8,4)

169−instance Binary a => Binary (NE.NonEmpty a)

170−#endif

171−

172155-- Generics

173156class AtomableG g where

174157 --type AtomTG g

@@ -252,8 +235,9 @@ typeToTypeConstructor x@DayAtomType = PrimitiveTypeConstructor "Day" x

252235typeToTypeConstructor x@DateTimeAtomType = PrimitiveTypeConstructor "DateTime" x

253236typeToTypeConstructor x@ByteStringAtomType = PrimitiveTypeConstructor "ByteString" x

254237typeToTypeConstructor x@BoolAtomType = PrimitiveTypeConstructor "Bool" x

238+typeToTypeConstructor x@RelationalExprAtomType = PrimitiveTypeConstructor "RelationalExpr" x

255239typeToTypeConstructor (RelationAtomType attrs)

256− = RelationAtomTypeConstructor $ map attrToAttrExpr $ V.toList attrs

240+ = RelationAtomTypeConstructor $ map attrToAttrExpr $ V.toList (attributesVec attrs)

257241 where

258242 attrToAttrExpr (Attribute n t) = AttributeAndTypeNameExpr n (typeToTypeConstructor t) ()

259243typeToTypeConstructor (ConstructedAtomType tcName tvMap)

src/lib/ProjectM36/Attribute.hs+148−29

@@ -1,3 +1,4 @@

1+{-# OPTIONS_GHC -fno-warn-orphans #-}

12module ProjectM36.Attribute where

23import ProjectM36.Base

34import ProjectM36.Error

@@ -10,16 +11,54 @@ import qualified Data.Map as M

1011import Data.Either

1112

1213arity :: Attributes -> Int

13−arity = V.length

14+arity a = V.length (attributesVec a)

15+

16+instance Semigroup Attributes where

17+ attrsA <> attrsB =

18+ case joinAttributes attrsA attrsB of

19+ Left err -> error (show err)

20+ Right attrs' -> attrs'

21+

22+instance Monoid Attributes where

23+ mempty = Attributes {

24+ attributesVec = mempty

25+ --,attributeSet = mempty

26+ }

1427

1528emptyAttributes :: Attributes

16−emptyAttributes = V.empty

29+emptyAttributes = mempty

1730

1831null :: Attributes -> Bool

19−null = V.null

32+null a = V.null (attributesVec a)

33+

34+singleton :: Attribute -> Attributes

35+singleton attr = Attributes {

36+ attributesVec = V.singleton attr

37+ --,attributesSet = HS.singleton attr

38+ }

39+

40+toList :: Attributes -> [Attribute]

41+toList attrs = V.toList (attributesVec attrs)

2042

2143attributesFromList :: [Attribute] -> Attributes

22−attributesFromList = V.fromList -- . L.nub --too expensive

44+attributesFromList attrsL = Attributes {

45+ attributesVec = vec

46+ --,attributesSet = hset

47+ }

48+ where

49+ vec = if length attrsL == HS.size hset then

50+ --fast path- no duplicates

51+ V.fromList attrsL

52+ else

53+ --duplicate detected, uniqueify while maintaining original ordering

54+ V.fromList uniquedL

55+ hset = HS.fromList attrsL

56+ uniquedL = fst $ foldr (\attr acc@(l,s) ->

57+ if HS.member attr s then

58+ acc

59+ else

60+ (l ++ [attr], HS.insert attr s))

61+ ([],mempty) attrsL

2362

2463attributeName :: Attribute -> AttributeName

2564attributeName (Attribute name _) = name

@@ -28,17 +67,16 @@ atomType :: Attribute -> AtomType

2867atomType (Attribute _ atype) = atype

2968

3069atomTypes :: Attributes -> V.Vector AtomType

31−atomTypes = V.map atomType

70+atomTypes attrs = V.map atomType (attributesVec attrs)

3271

3372atomTypesList :: Attributes -> [AtomType]

3473atomTypesList = V.toList . atomTypes

3574

36−--hm- no error-checking here

3775addAttribute :: Attribute -> Attributes -> Attributes

38−addAttribute attr attrs = attrs `V.snoc` attr

76+addAttribute attr attrs = attrs <> singleton attr

3977

4078--if some attribute names overlap but the types do not, then spit back an error

41−joinAttributes :: Attributes -> Attributes -> Either RelationalError Attributes

79+{-joinAttributes :: Attributes -> Attributes -> Either RelationalError Attributes

4280joinAttributes attrs1 attrs2 | V.length uniqueOverlappingAttributes /= V.length overlappingAttributes = Left (TupleAttributeTypeMismatchError overlappingAttributes)

4381 | V.length overlappingAttrsDifferentTypes > 0 = Left (TupleAttributeTypeMismatchError overlappingAttrsDifferentTypes)

4482 | otherwise = Right $ vectorUniqueify (attrs1 V.++ attrs2)

@@ -47,20 +85,52 @@ joinAttributes attrs1 attrs2 | V.length uniqueOverlappingAttributes /= V.length

4785 attrNames2 = V.map attributeName attrs2

4886 uniqueOverlappingAttributes = vectorUniqueify overlappingAttributes

4987 overlappingAttributes = V.filter (`V.elem` attrs2) attrs1

88+-}

89+joinAttributes :: Attributes -> Attributes -> Either RelationalError Attributes

90+joinAttributes attrs1 attrs2

91+ | S.size overlappingNames == 0 = -- fast path, no overlapping names

92+ pure (concated id)

93+ | attributesForNames overlappingNames attrs1 == attributesForNames overlappingNames attrs2 = -- that atomtypes match

94+ pure (concated vectorUniqueify)

95+ | otherwise =

96+ --special handling to validate that overlapping names have the same atom types

97+ Left (TupleAttributeTypeMismatchError (attributesForNames overlappingNames attrs1))

98+ where

99+ nameSet1 = attributeNameSet attrs1

100+ nameSet2 = attributeNameSet attrs2

101+ overlappingNames = S.intersection nameSet1 nameSet2

102+ concated f = Attributes {

103+ attributesVec = f (attributesVec attrs1 <> attributesVec attrs2)

104+ --,attributesSet = attributesSet attrs1 <> attributesSet attrs2

105+ }

50106

51107addAttributes :: Attributes -> Attributes -> Attributes

52−addAttributes = (V.++)

108+addAttributes = (<>)

109+

110+member :: Attribute -> Attributes -> Bool

111+member attr attrs = HS.member attr (attributesSet attrs)

53112

54113deleteAttributeName :: AttributeName -> Attributes -> Attributes

55−deleteAttributeName attrName = V.filter (\attr -> attributeName attr /= attrName)

114+deleteAttributeName attrName = deleteAttributeNames (S.singleton attrName)

115+

116+deleteAttributeNames :: S.Set AttributeName -> Attributes -> Attributes

117+deleteAttributeNames attrNames attrs = Attributes {

118+ attributesVec = vec

119+ }

120+ where

121+ vec = V.filter attrFilter (attributesVec attrs)

122+ attrFilter attr = S.notMember (attributeName attr) attrNames

56123

57124renameAttribute :: AttributeName -> Attribute -> Attribute

58125renameAttribute newAttrName (Attribute _ typeo) = Attribute newAttrName typeo

59126

60127renameAttributes :: AttributeName -> AttributeName -> Attributes -> Attributes

61−renameAttributes oldAttrName newAttrName = V.map renamer

128+renameAttributes oldAttrName newAttrName attrs = Attributes {

129+ attributesVec = vec

130+ }

62131 where

63− renamer attr = if attributeName attr == oldAttrName then

132+ vec = V.map renamer (attributesVec attrs)

133+ renamer attr = if attributeName attr == oldAttrName then

64134 renameAttribute newAttrName attr

65135 else

66136 attr

@@ -71,7 +141,7 @@ atomTypeForAttributeName attrName attrs = do

71141 return atype

72142

73143attributeForName :: AttributeName -> Attributes -> Either RelationalError Attribute

74−attributeForName attrName attrs = case V.find (\attr -> attributeName attr == attrName) attrs of

144+attributeForName attrName attrs = case V.find (\attr -> attributeName attr == attrName) (attributesVec attrs) of

75145 Nothing -> Left (NoSuchAttributeNamesError (S.singleton attrName))

76146 Just attr -> Right attr

77147

@@ -89,15 +159,18 @@ projectionAttributesForNames names attrsIn =

89159 missingNames = attributeNamesNotContained names (S.fromList (V.toList (attributeNames attrsIn)))

90160

91161attributesForNames :: S.Set AttributeName -> Attributes -> Attributes

92−attributesForNames attrNameSet = V.filter filt

162+attributesForNames attrNameSet attrs = Attributes {

163+ attributesVec = vec

164+ }

93165 where

166+ vec = V.filter filt (attributesVec attrs)

94167 filt attr = S.member (attributeName attr) attrNameSet

95168

96169attributeNameSet :: Attributes -> S.Set AttributeName

97−attributeNameSet attrVec = S.fromList $ V.toList $ V.map (\(Attribute name _) -> name) attrVec

170+attributeNameSet attrs = S.fromList $ V.toList $ V.map (\(Attribute name _) -> name) (attributesVec attrs)

98171

99172attributeNames :: Attributes -> V.Vector AttributeName

100−attributeNames = V.map attributeName

173+attributeNames attrs = V.map attributeName (attributesVec attrs)

101174

102175--checks if set s1 is wholly contained in the set s2

103176attributesContained :: Attributes -> Attributes -> Bool

@@ -118,42 +191,88 @@ attributeNamesNotContained subset superset = S.filter (`S.notMember` superset) s

118191

119192-- useful for display

120193orderedAttributes :: Attributes -> [Attribute]

121−orderedAttributes attrs = L.sortBy (\a b -> attributeName a `compare` attributeName b) (V.toList attrs)

194+orderedAttributes attrs = L.sortBy (\a b -> attributeName a `compare` attributeName b) (V.toList (attributesVec attrs))

122195

123196orderedAttributeNames :: Attributes -> [AttributeName]

124197orderedAttributeNames attrs = map attributeName (orderedAttributes attrs)

125198

126199-- take two attribute sets and return an attribute set with the attributes which do not match

200+--this is the function which benefits the most from the HashSet representation- this turned up in the insert performance test

127201attributesDifference :: Attributes -> Attributes -> Attributes

128−attributesDifference attrsA attrsB = V.fromList $ diff (V.toList attrsA) (V.toList attrsB)

202+{-attributesDifference attrsA attrsB = V.fromList $ diff (V.toList attrsA) (V.toList attrsB)

129203 where

130204 diff a b = (a L.\\ b) ++ (b L.\\ a)

205+-}

206+attributesDifference attrsA attrsB =

207+ if attributesSet attrsA == attributesSet attrsB then

208+ mempty

209+ else

210+ Attributes {

211+ attributesVec = vec

212+ --,attributesSet = hset

213+ }

214+ where

215+ hset = HS.difference setA setB <> HS.difference setB setA

216+ setA = attributesSet attrsA

217+ setB = attributesSet attrsB

218+ vec = V.filter (`HS.member` hset) (attributesVec attrsA <> attributesVec attrsB)

131219

132220vectorUniqueify :: (Hash.Hashable a, Eq a) => V.Vector a -> V.Vector a

133221vectorUniqueify vecIn = V.fromList $ HS.toList $ HS.fromList $ V.toList vecIn

134222

135223--check that each attribute only appears once

136224verifyAttributes :: Attributes -> Either RelationalError Attributes

137−verifyAttributes attrs = if collapsedAttrs /= attrs then

138− Left (TupleAttributeTypeMismatchError (attributesDifference collapsedAttrs attrs))

139− else

140− Right attrs

225+verifyAttributes attrs =

226+ if vecSet == attributesSet attrs then

227+ pure attrs

228+ else

229+ Left (TupleAttributeTypeMismatchError diffAttrs)

141230 where

142− collapsedAttrs = vectorUniqueify attrs

231+ vecSet = V.foldr' HS.insert HS.empty (attributesVec attrs)

232+ diffSet = HS.difference vecSet (attributesSet attrs) <> HS.difference (attributesSet attrs) vecSet

233+ diffAttrs = Attributes {

234+ attributesVec = V.fromList (HS.toList diffSet)

235+ --,attributesSet = diffSet

236+ }

237+

238+--used in Generics derivation for ADTs without named attributes- not to be used elsewhere

239+--drop first n attributes from vector representation

240+drop :: Int -> Attributes -> Attributes

241+drop c attrs = Attributes { attributesVec = vec

242+ }

243+ where

244+ vec = V.drop c (attributesVec attrs)

245+

246+

247+-- use this in preference to attributesEqual when the attribute ordering matters such as during tuple unions

248+attributesAndOrderEqual :: Attributes -> Attributes -> Bool

249+attributesAndOrderEqual a b = attributesVec a == attributesVec b

143250

251+-- use to determine if the same attributes are contained (but ordering is irrelevant)

144252attributesEqual :: Attributes -> Attributes -> Bool

145−attributesEqual attrs1 attrs2 = V.null (attributesDifference attrs1 attrs2)

253+attributesEqual attrsA attrsB =

254+ attributesVec attrsA == attributesVec attrsB ||

255+ attributesSet attrsA == attributesSet attrsB

146256

147257attributesAsMap :: Attributes -> M.Map AttributeName Attribute

148−attributesAsMap attrs = (M.fromList . V.toList) (V.map (\attr -> (attributeName attr, attr)) attrs)

258+attributesAsMap attrs = V.foldr' (\attr acc -> M.insert (attributeName attr) attr acc) mempty (attributesVec attrs)

259+

149260

150261-- | Left-biased union of attributes.

151262union :: Attributes -> Attributes -> Attributes

152−union attrsA attrsB = V.fromList (M.elems unioned)

263+union attrsA attrsB = Attributes {

264+ attributesVec = vec

265+ --,attributesSet = hset

266+ }

153267 where

154− unioned = M.union (attributesAsMap attrsA) (attributesAsMap attrsB)

268+ hset = HS.union (attributesSet attrsA) (attributesSet attrsB)

269+ vec = HS.foldr (flip V.snoc) mempty hset

155270

156271intersection :: Attributes -> Attributes -> Attributes

157−intersection attrsA attrsB = V.fromList (M.elems intersected)

272+intersection attrsA attrsB = Attributes {

273+ attributesVec = vec

274+ --,attributesSet = hset

275+ }

158276 where

159− intersected = M.intersection (attributesAsMap attrsA) (attributesAsMap attrsB)

277+ hset = HS.intersection (attributesSet attrsA) (attributesSet attrsB)

278+ vec = HS.foldr (flip V.snoc) mempty hset

src/lib/ProjectM36/Base.hs+100−108

@@ -1,4 +1,4 @@

1−{-# LANGUAGE ExistentialQuantification,DeriveGeneric,DeriveAnyClass,FlexibleInstances,OverloadedStrings, DeriveTraversable #-}

1+{-# LANGUAGE ExistentialQuantification,DeriveGeneric,DeriveAnyClass,FlexibleInstances,OverloadedStrings, DeriveTraversable, DerivingVia, TemplateHaskell, TypeFamilies #-}

22{-# OPTIONS_GHC -fno-warn-orphans #-}

44module ProjectM36.Base where

@@ -6,6 +6,7 @@ import ProjectM36.DatabaseContextFunctionError

66import ProjectM36.AtomFunctionError

77import ProjectM36.MerkleHash

9+import Data.Functor.Foldable.TH

910import qualified Data.Map as M

1011import qualified Data.HashSet as HS

1112import Data.Hashable (Hashable, hashWithSalt)

@@ -18,16 +19,17 @@ import GHC.Stack

1819import qualified Data.Vector as V

1920import qualified Data.List as L

2021import Data.Text (Text,unpack)

21−import Data.Binary

22−import Data.Vector.Binary()

2322import Data.Time.Clock

24−import Data.Time.Clock.POSIX

25−import Data.Time.Calendar (Day,toGregorian,fromGregorian)

2623import Data.Hashable.Time ()

24+import Data.Time.Calendar (Day)

2725import Data.Typeable

2826import Data.ByteString (ByteString)

2927import qualified Data.List.NonEmpty as NE

28+import Data.Vector.Instances ()

29+

3030type StringType = Text

31+

32+type DatabaseName = String

3133

3234-- | Database atoms are the smallest, undecomposable units of a tuple. Common examples are integers, text, or unique identity keys.

3335data Atom = IntegerAtom Integer |

@@ -39,8 +41,9 @@ data Atom = IntegerAtom Integer |

3941 ByteStringAtom ByteString |

4042 BoolAtom Bool |

4143 RelationAtom Relation |

44+ RelationalExprAtom RelationalExpr | --used for returning inc deps

4245 ConstructedAtom DataConstructorName AtomType [Atom]

43− deriving (Eq, Show, Binary, Typeable, NFData, Generic)

46+ deriving (Eq, Show, Typeable, NFData, Generic, Read)

4447

4548instance Hashable Atom where

4649 hashWithSalt salt (ConstructedAtom dConsName _ atoms) = salt `hashWithSalt` atoms

@@ -54,16 +57,7 @@ instance Hashable Atom where

5457 hashWithSalt salt (ByteStringAtom bs) = salt `hashWithSalt` bs

5558 hashWithSalt salt (BoolAtom b) = salt `hashWithSalt` b

5659 hashWithSalt salt (RelationAtom r) = salt `hashWithSalt` r

57−

58−instance Binary UTCTime where

59− put utc = put $ toRational (utcTimeToPOSIXSeconds utc)

60− get = posixSecondsToUTCTime . fromRational <$> (get :: Get Rational)

61−

62−instance Binary Day where

63− put day = put $ toGregorian day

64− get = do

65− (y,m,d) <- get :: Get (Integer, Int, Int)

66− return (fromGregorian y m d)

60+ hashWithSalt salt (RelationalExprAtom re) = salt `hashWithSalt` re

6761

6862-- I suspect the definition of ConstructedAtomType with its name alone is insufficient to disambiguate the cases; for example, one could create a type named X, remove a type named X, and re-add it using different constructors. However, as long as requests are served from only one DatabaseContext at-a-time, the type name is unambiguous. This will become a problem for time-travel, however.

6963-- | The AtomType uniquely identifies the type of a atom.

@@ -77,13 +71,15 @@ data AtomType = IntAtomType |

7771 BoolAtomType |

7872 RelationAtomType Attributes |

7973 ConstructedAtomType TypeConstructorName TypeVarMap |

74+ RelationalExprAtomType |

8075 TypeVariableType TypeVarName

8176 --wildcard used in Atom Functions and tuples for data constructors which don't provide all arguments to the type constructor

82− deriving (Eq, NFData, Generic, Binary, Show)

77+ deriving (Eq, NFData, Generic, Show, Read, Hashable)

8378

8479instance Ord AtomType where

8580 compare = undefined

86−

81+

82+-- this should probably be an ordered dictionary in order to be able to round-trip these arguments

8783type TypeVarMap = M.Map TypeVarName AtomType

8884

8985instance Hashable TypeVarMap where

@@ -98,25 +94,37 @@ isRelationAtomType _ = False

9894type AttributeName = StringType

9995

10096-- | A relation's type is composed of attribute names and types.

101−data Attribute = Attribute AttributeName AtomType deriving (Eq, Show, Generic, NFData, Binary)

97+data Attribute = Attribute AttributeName AtomType deriving (Eq, Show, Read, Generic, NFData)

10298

10399instance Hashable Attribute where

104100 hashWithSalt salt (Attribute attrName _) = hashWithSalt salt attrName

105101

102+type AttributesHash = Int

103+

106104-- | 'Attributes' represent the head of a relation.

107−type Attributes = V.Vector Attribute

105+newtype Attributes = Attributes {

106+ attributesVec :: V.Vector Attribute

107+ --,attributesSet :: HS.HashSet Attribute --compare with this generated in heap profile and benchmarks

108+ }

109+ deriving (NFData, Read, Hashable, Generic)

110+

111+attributesSet :: Attributes -> HS.HashSet Attribute

112+attributesSet = HS.fromList . V.toList . attributesVec

113+

114+instance Show Attributes where

115+ show attrs = "attributesFromList [" <> L.intercalate ", " (map (\attr -> "(" <> show attr <> ")") (V.toList (attributesVec attrs))) <> "]"

116+

117+--when attribute ordering is irrelevant

118+instance Eq Attributes where

119+ attrsA == attrsB =

120+ attributesVec attrsA == attributesVec attrsB ||

121+ attributesSet attrsA == attributesSet attrsB

108122

109−-- | Equality function for a set of attributes.

110−attributesEqual :: Attributes -> Attributes -> Bool

111−attributesEqual attrs1 attrs2 = attrsAsSet attrs1 == attrsAsSet attrs2

112− where

113− attrsAsSet = HS.fromList . V.toList

114−

115123sortedAttributesIndices :: Attributes -> [(Int, Attribute)]

116−sortedAttributesIndices attrs = L.sortBy (\(_, Attribute name1 _) (_,Attribute name2 _) -> compare name1 name2) $ V.toList (V.indexed attrs)

124+sortedAttributesIndices attrs = L.sortBy (\(_, Attribute name1 _) (_,Attribute name2 _) -> compare name1 name2) $ V.toList (V.indexed (attributesVec attrs))

117125

118126-- | The relation's tuple set is the body of the relation.

119−newtype RelationTupleSet = RelationTupleSet { asList :: [RelationTuple] } deriving (Hashable, Show, Generic, Binary)

127+newtype RelationTupleSet = RelationTupleSet { asList :: [RelationTuple] } deriving (Hashable, Show, Generic, Read)

120128

121129instance Read Relation where

122130 readsPrec = error "relation read not supported"

@@ -132,8 +140,8 @@ instance NFData RelationTupleSet where rnf = genericRnf

132140instance Hashable RelationTuple where

133141 --sanity check the tuple for attribute and tuple counts

134142 --this bit me when tuples were being hashed before being verified

135− hashWithSalt salt (RelationTuple attrs tupVec) = if V.length attrs /= V.length tupVec then

136− error "invalid tuple: attributes and tuple count mismatch"

143+ hashWithSalt salt (RelationTuple attrs tupVec) = if V.length (attributesVec attrs) /= V.length tupVec then

144+ error ("invalid tuple: attributes and tuple count mismatch " <> show (attributesVec attrs, tupVec))

137145 else

138146 salt `hashWithSalt`

139147 sortedAttrs `hashWithSalt`

@@ -144,25 +152,23 @@ instance Hashable RelationTuple where

144152 sortedTupVec = V.map (\(index, _) -> tupVec V.! index) $ V.fromList sortedAttrsIndices

145153

146154-- | A tuple is a set of attributes mapped to their 'Atom' values.

147−data RelationTuple = RelationTuple Attributes (V.Vector Atom) deriving (Show, Generic)

148−

149−instance Binary RelationTuple

155+data RelationTuple = RelationTuple Attributes (V.Vector Atom) deriving (Show, Read, Generic)

150156

151157instance Eq RelationTuple where

152− (==) tuple1@(RelationTuple attrs1 _) tuple2@(RelationTuple attrs2 _) = attributesEqual attrs1 attrs2 && atomsEqual

158+ tuple1@(RelationTuple attrs1 _) == tuple2@(RelationTuple attrs2 _) =

159+ attrs1 == attrs2 && atomsEqual

153160 where

154− atomForAttribute attr (RelationTuple attrs tupVec) = case V.findIndex (== attr) attrs of

161+ atomForAttribute attr (RelationTuple attrs tupVec) = case V.findIndex (== attr) (attributesVec attrs) of

155162 Nothing -> Nothing

156163 Just index -> tupVec V.!? index

157− atomsEqual = V.all (== True) $ V.map (\attr -> atomForAttribute attr tuple1 == atomForAttribute attr tuple2) attrs1

164+ atomsEqual = V.all (== True) $ V.map (\attr -> atomForAttribute attr tuple1 == atomForAttribute attr tuple2) (attributesVec attrs1)

158165

159166instance NFData RelationTuple where rnf = genericRnf

160167

161−

162168data Relation = Relation Attributes RelationTupleSet deriving (Show, Generic,Typeable)

163169

164170instance Eq Relation where

165− Relation attrs1 tupSet1 == Relation attrs2 tupSet2 = attributesEqual attrs1 attrs2 && tupSet1 == tupSet2

171+ Relation attrs1 tupSet1 == Relation attrs2 tupSet2 = attrs1 == attrs2 && tupSet1 == tupSet2

166172

167173instance NFData Relation where rnf = genericRnf

168174

@@ -173,8 +179,6 @@ instance Hashable Relation where

173179 where

174180 sortedAttrs = map snd (sortedAttributesIndices attrs)

175181

176−instance Binary Relation

177−

178182-- | Used to represent the number of tuples in a relation.

179183data RelationCardinality = Countable | Finite Int deriving (Eq, Show, Generic, Ord)

180184

@@ -219,17 +223,15 @@ data RelationalExprBase a =

219223 --Summarize :: AtomExpr -> AttributeName -> RelationalExpr -> RelationalExpr -> RelationalExpr -- a special case of Extend

220224 --Evaluate relationalExpr with scoped views

221225 With [(WithNameExprBase a, RelationalExprBase a)] (RelationalExprBase a)

222− deriving (Show, Eq, Generic, NFData, Foldable, Functor, Traversable)

223−

224−instance Binary RelationalExpr

226+ deriving (Show, Read, Eq, Generic, NFData, Foldable, Functor, Traversable)

225227

228+instance Hashable RelationalExpr

229+

226230data WithNameExprBase a = WithNameExpr RelVarName a

227− deriving (Show, Eq, Generic, NFData, Foldable, Functor, Traversable)

231+ deriving (Show, Read, Eq, Generic, NFData, Foldable, Functor, Traversable, Hashable)

228232

229233type WithNameExpr = WithNameExprBase ()

230234

231−instance Binary WithNameExpr

232−

233235type GraphRefWithNameExpr = WithNameExprBase GraphRefTransactionMarker

234236

235237type NotificationName = StringType

@@ -241,22 +243,22 @@ data Notification = Notification {

241243 reportOldExpr :: RelationalExpr, --run the expression in the pre-change context

242244 reportNewExpr :: RelationalExpr --run the expression in the post-change context

243245 }

244− deriving (Show, Eq, Binary, Generic, NFData)

246+ deriving (Show, Eq, Generic, NFData)

245247

246248type TypeVarName = StringType

247249

248250-- | Metadata definition for type constructors such as @data Either a b@.

249251data TypeConstructorDef = ADTypeConstructorDef TypeConstructorName [TypeVarName] |

250252 PrimitiveTypeConstructorDef TypeConstructorName AtomType

251− deriving (Show, Generic, Binary, Eq, NFData)

253+ deriving (Show, Generic, Eq, NFData, Hashable, Read)

252254

253255-- | Found in data constructors and type declarations: Left (Either Int Text) | Right Int

254256type TypeConstructor = TypeConstructorBase ()

255257data TypeConstructorBase a = ADTypeConstructor TypeConstructorName [TypeConstructor] |

256− PrimitiveTypeConstructor TypeConstructorName AtomType |

257− RelationAtomTypeConstructor [AttributeExprBase a] |

258− TypeVariable TypeVarName

259− deriving (Show, Generic, Binary, Eq, NFData)

258+ PrimitiveTypeConstructor TypeConstructorName AtomType |

259+ RelationAtomTypeConstructor [AttributeExprBase a] |

260+ TypeVariable TypeVarName

261+ deriving (Show, Generic, Eq, NFData, Hashable, Read)

260262

261263type TypeConstructorMapping = [(TypeConstructorDef, DataConstructorDefs)]

262264

@@ -266,20 +268,20 @@ type DataConstructorName = StringType

266268type AtomTypeName = StringType

267269

268270-- | Used to define a data constructor in a type constructor context such as @Left a | Right b@

269−data DataConstructorDef = DataConstructorDef DataConstructorName [DataConstructorDefArg] deriving (Eq, Show, Binary, Generic, NFData)

271+data DataConstructorDef = DataConstructorDef DataConstructorName [DataConstructorDefArg] deriving (Eq, Show, Generic, NFData, Hashable, Read)

270272

271273type DataConstructorDefs = [DataConstructorDef]

272274

273275data DataConstructorDefArg = DataConstructorDefTypeConstructorArg TypeConstructor |

274276 DataConstructorDefTypeVarNameArg TypeVarName

275− deriving (Show, Generic, Binary, Eq, NFData)

277+ deriving (Show, Generic, Eq, NFData, Hashable, Read)

276278

277279type InclusionDependencies = M.Map IncDepName InclusionDependency

278280type RelationVariables = M.Map RelVarName GraphRefRelationalExpr

279281

280282data GraphRefTransactionMarker = TransactionMarker TransactionId |

281283 UncommittedContextMarker

282− deriving (Eq, Show, Binary, Generic, NFData, Ord)

284+ deriving (Eq, Show, Generic, NFData, Ord)

283285

284286-- a fundamental relational expr to which other relational expressions compile

285287type GraphRefRelationalExpr = RelationalExprBase GraphRefTransactionMarker

@@ -290,17 +292,18 @@ type Subschemas = M.Map SchemaName Schema

290292

291293-- | Every transaction has one concrete database context and any number of isomorphic subschemas.

292294data Schemas = Schemas DatabaseContext Subschemas

295+ deriving (Generic)

293296

294297-- | The DatabaseContext is a snapshot of a database's evolving state and contains everything a database client can change over time.

295298-- I spent some time thinking about whether the VirtualDatabaseContext/Schema and DatabaseContext data constructors should be the same constructor, but that would allow relation variables to be created in a "virtual" context which would appear to defeat the isomorphisms of the contexts. It should be possible to switch to an alternative schema to view the same equivalent information without information loss. However, allowing all contexts to reference another context while maintaining its own relation variables, new types, etc. could be interesting from a security perspective. For example, if a user creates a new relvar in a virtual context, then does it necessarily appear in all linked contexts? After deliberation, I think the relvar should appear in *all* linked contexts to retain the isomorphic properties, even when the isomorphism is for a subset of the context. This hints that the IsoMorphs should allow for "fall-through"; that is, when a relvar is not defined in the virtual context (for morphing), then the lookup should fall through to the underlying context.

296299newtype Schema = Schema SchemaIsomorphs

297− deriving (Generic, Binary)

300+ deriving (Generic)

298301

299302data SchemaIsomorph = IsoRestrict RelVarName RestrictionPredicateExpr (RelVarName, RelVarName) |

300303 IsoRename RelVarName RelVarName |

301304 IsoUnion (RelVarName, RelVarName) RestrictionPredicateExpr RelVarName --maps two relvars to one relvar

302305 -- IsoTypeConstructor in morphAttrExpr

303− deriving (Generic, Binary, Show)

306+ deriving (Generic, Show)

304307

305308type SchemaIsomorphs = [SchemaIsomorph]

306309

@@ -316,9 +319,7 @@ data DatabaseContext = DatabaseContext {

316319type IncDepName = StringType

317320

318321-- | Inclusion dependencies represent every possible database constraint. Constraints enforce specific, arbitrarily-complex rules to which the database context's relation variables must adhere unconditionally.

319−data InclusionDependency = InclusionDependency RelationalExpr RelationalExpr deriving (Show, Eq, Generic, NFData)

320−

321−instance Binary InclusionDependency

322+data InclusionDependency = InclusionDependency RelationalExpr RelationalExpr deriving (Show, Eq, Generic, NFData, Hashable, Read)

322323

323324type AttributeNameAtomExprMap = M.Map AttributeName AtomExpr

324325

@@ -327,9 +328,9 @@ type DatabaseContextExprName = StringType

327328

328329type DatabaseContextExpr = DatabaseContextExprBase ()

329330

330−type GraphRefDatabaseContextExpr = DatabaseContextExprBase GraphRefTransactionMarker

331+instance Hashable DatabaseContextExpr

331332

332−instance Binary GraphRefDatabaseContextExpr

333+type GraphRefDatabaseContextExpr = DatabaseContextExprBase GraphRefTransactionMarker

333334

334335-- | Database context expressions modify the database context.

335336data DatabaseContextExprBase a =

@@ -358,9 +359,10 @@ data DatabaseContextExprBase a =

358359 ExecuteDatabaseContextFunction DatabaseContextFunctionName [AtomExprBase a] |

359360

360361 MultipleExpr [DatabaseContextExprBase a]

361− deriving (Show, Eq, Generic)

362+ deriving (Show, Read, Eq, Generic, NFData)

362363

363−instance Binary DatabaseContextExpr

364+instance Hashable (M.Map AttributeName AtomExpr) where

365+ hashWithSalt salt m = salt `hashWithSalt` M.toList m

364366

365367type ObjModuleName = StringType

366368type ObjFunctionName = StringType

@@ -372,7 +374,7 @@ data DatabaseContextIOExprBase a =

372374 AddDatabaseContextFunction DatabaseContextFunctionName [TypeConstructor] DatabaseContextFunctionBodyScript |

373375 LoadDatabaseContextFunctions ObjModuleName ObjFunctionName FilePath |

374376 CreateArbitraryRelation RelVarName [AttributeExprBase a] Range

375− deriving (Show, Eq, Generic, Binary)

377+ deriving (Show, Eq, Generic)

376378

377379type GraphRefDatabaseContextIOExpr = DatabaseContextIOExprBase GraphRefTransactionMarker

378380

@@ -380,6 +382,8 @@ type DatabaseContextIOExpr = DatabaseContextIOExprBase ()

380382

381383type RestrictionPredicateExpr = RestrictionPredicateExprBase ()

382384

385+instance Hashable RestrictionPredicateExpr

386+

383387type GraphRefRestrictionPredicateExpr = RestrictionPredicateExprBase GraphRefTransactionMarker

384388

385389-- | Restriction predicates are boolean algebra components which, when composed, indicate whether or not a tuple should be retained during a restriction (filtering) operation.

@@ -391,9 +395,7 @@ data RestrictionPredicateExprBase a =

391395 RelationalExprPredicate (RelationalExprBase a) | --type must be same as true and false relations (no attributes)

392396 AtomExprPredicate (AtomExprBase a) | --atom must evaluate to boolean

393397 AttributeEqualityPredicate AttributeName (AtomExprBase a) -- relationalexpr must result in relation with single tuple

394− deriving (Show, Eq, Generic, NFData, Foldable, Functor, Traversable)

395−

396−instance Binary RestrictionPredicateExpr

398+ deriving (Show, Read, Eq, Generic, NFData, Foldable, Functor, Traversable)

397399

398400-- child + parent links

399401-- | A transaction graph's head name references the leaves of the transaction graph and can be used during session creation to indicate at which point in the graph commits should persist.

@@ -403,6 +405,7 @@ type TransactionHeads = M.Map HeadName Transaction

403405

404406-- | The transaction graph is the global database's state which references every committed transaction.

405407data TransactionGraph = TransactionGraph TransactionHeads (S.Set Transaction)

408+ deriving Generic

406409

407410transactionHeadsForGraph :: TransactionGraph -> TransactionHeads

408411transactionHeadsForGraph (TransactionGraph hs _) = hs

@@ -425,12 +428,11 @@ data TransactionInfo = TransactionInfo TransactionId TransactionDiffs UTCTime |

425428 deriving (Show, Generic)

426429-}

427430

428−instance Binary TransactionInfo

429−

430431-- | Every set of modifications made to the database are atomically committed to the transaction graph as a transaction.

431432type TransactionId = UUID

432433

433434data Transaction = Transaction TransactionId TransactionInfo Schemas

435+ deriving Generic

434436

435437-- | The disconnected transaction represents an in-progress workspace used by sessions before changes are committed. This is similar to git's "index". After a transaction is committed, it is "connected" in the transaction graph and can no longer be modified.

436438data DisconnectedTransaction = DisconnectedTransaction TransactionId Schemas DirtyFlag

@@ -454,6 +456,8 @@ instance Ord Transaction where

454456

455457type AtomExpr = AtomExprBase ()

456458

459+instance Hashable AtomExpr

460+

457461type GraphRefAtomExpr = AtomExprBase GraphRefTransactionMarker

458462

459463-- | An atom expression represents an action to take when extending a relation or when statically defining a relation or a new tuple.

@@ -462,18 +466,17 @@ data AtomExprBase a = AttributeAtomExpr AttributeName |

462466 FunctionAtomExpr AtomFunctionName [AtomExprBase a] a |

463467 RelationAtomExpr (RelationalExprBase a) |

464468 ConstructedAtomExpr DataConstructorName [AtomExprBase a] a

465− deriving (Eq,Show,Generic, NFData, Foldable, Functor, Traversable)

469+ deriving (Eq, Show, Read, Generic, NFData, Foldable, Functor, Traversable)

466470

467−instance Binary AtomExpr

468−

469471-- | Used in tuple creation when creating a relation.

470472data ExtendTupleExprBase a = AttributeExtendTupleExpr AttributeName (AtomExprBase a)

471− deriving (Show, Eq, Generic, NFData, Foldable, Functor, Traversable)

473+ deriving (Show, Read, Eq, Generic, NFData, Foldable, Functor, Traversable)

472474

473475type ExtendTupleExpr = ExtendTupleExprBase ()

474−type GraphRefExtendTupleExpr = ExtendTupleExprBase GraphRefTransactionMarker

475476

476−instance Binary ExtendTupleExpr

477+instance Hashable ExtendTupleExpr

478+

479+type GraphRefExtendTupleExpr = ExtendTupleExprBase GraphRefTransactionMarker

477480

478481--enumerates the list of functions available to be run as part of tuple expressions

479482type AtomFunctions = HS.HashSet AtomFunction

@@ -485,6 +488,7 @@ type AtomFunctionBodyScript = StringType

485488type AtomFunctionBodyType = [Atom] -> Either AtomFunctionError Atom

486489

487490data AtomFunctionBody = AtomFunctionBody (Maybe AtomFunctionBodyScript) AtomFunctionBodyType

491+ deriving Generic

488492

489493instance NFData AtomFunctionBody where

490494 rnf (AtomFunctionBody mScript _) = rnf mScript

@@ -519,14 +523,17 @@ data AttributeNamesBase a = AttributeNames (S.Set AttributeName) |

519523 UnionAttributeNames (AttributeNamesBase a) (AttributeNamesBase a) |

520524 IntersectAttributeNames (AttributeNamesBase a) (AttributeNamesBase a) |

521525 RelationalExprAttributeNames (RelationalExprBase a) -- use attribute names from the relational expression's type

522− deriving (Eq, Show, Generic, NFData, Foldable, Functor, Traversable)

526+ deriving (Eq, Show, Read, Generic, NFData, Foldable, Functor, Traversable)

527+

528+instance Hashable AttributeNames

529+

530+instance Hashable (S.Set AttributeName) where

531+ hashWithSalt salt s = salt `hashWithSalt` S.toList s

523532

524533type AttributeNames = AttributeNamesBase ()

525534

526535type GraphRefAttributeNames = AttributeNamesBase GraphRefTransactionMarker

527536

528−instance Binary AttributeNames

529−

530537-- | The persistence strategy is a global database option which represents how to persist the database in the filesystem, if at all.

531538data PersistenceStrategy = NoPersistence | -- ^ no filesystem persistence/memory-only database

532539 MinimalPersistence FilePath | -- ^ fsync off, not crash-safe

@@ -539,27 +546,27 @@ type GraphRefAttributeExpr = AttributeExprBase GraphRefTransactionMarker

539546-- | Create attributes dynamically.

540547data AttributeExprBase a = AttributeAndTypeNameExpr AttributeName TypeConstructor a |

541548 NakedAttributeExpr Attribute

542− deriving (Eq, Show, Generic, Binary, NFData, Foldable, Functor, Traversable)

549+ deriving (Eq, Show, Read, Generic, NFData, Foldable, Functor, Traversable, Hashable)

543550

544551-- | Dynamically create a tuple from attribute names and 'AtomExpr's.

545552newtype TupleExprBase a = TupleExpr (M.Map AttributeName (AtomExprBase a))

546− deriving (Eq, Show, Generic, NFData, Foldable, Functor, Traversable)

547−

548−instance Binary TupleExpr

553+ deriving (Eq, Show, Read, Generic, NFData, Foldable, Functor, Traversable)

554+

555+instance Hashable TupleExpr

549556

550557type TupleExpr = TupleExprBase ()

551558

552559type GraphRefTupleExpr = TupleExprBase GraphRefTransactionMarker

553560

554561data TupleExprsBase a = TupleExprs a [TupleExprBase a]

555− deriving (Eq, Show, Generic, NFData, Foldable, Functor, Traversable)

562+ deriving (Eq, Show, Read, Generic, NFData, Foldable, Functor, Traversable)

563+

564+instance Hashable TupleExprs

556565

557566type GraphRefTupleExprs = TupleExprsBase GraphRefTransactionMarker

558567

559568type TupleExprs = TupleExprsBase ()

560569

561−instance Binary TupleExprs

562−

563570data MergeStrategy =

564571 -- | After a union merge, the merge transaction is a result of union'ing relvars of the same name, introducing all uniquely-named relvars, union of constraints, union of atom functions, notifications, and types (unless the names and definitions collide, e.g. two types of the same name with different definitions)

565572 UnionMergeStrategy |

@@ -567,7 +574,7 @@ data MergeStrategy =

567574 UnionPreferMergeStrategy HeadName |

568575 -- | Similar to the our/theirs merge strategy in git, the merge transaction's context is identical to that of the last transaction in the selected branch.

569576 SelectedBranchMergeStrategy HeadName

570− deriving (Eq, Show, Binary, Generic, NFData)

577+ deriving (Eq, Show, Generic, NFData)

571578

572579type DatabaseContextFunctionName = StringType

573580

@@ -604,7 +611,8 @@ attrTypeVars (Attribute _ aType) = case aType of

604611 DateTimeAtomType -> S.empty

605612 ByteStringAtomType -> S.empty

606613 BoolAtomType -> S.empty

607− (RelationAtomType attrs) -> S.unions (map attrTypeVars (V.toList attrs))

614+ RelationalExprAtomType -> S.empty

615+ (RelationAtomType attrs) -> S.unions (map attrTypeVars (V.toList (attributesVec attrs)))

608616 (ConstructedAtomType _ tvMap) -> M.keysSet tvMap

609617 (TypeVariableType nam) -> S.singleton nam

610618

@@ -627,28 +635,12 @@ atomTypeVars DayAtomType = S.empty

627635atomTypeVars DateTimeAtomType = S.empty

628636atomTypeVars ByteStringAtomType = S.empty

629637atomTypeVars BoolAtomType = S.empty

630−atomTypeVars (RelationAtomType attrs) = S.unions (map attrTypeVars (V.toList attrs))

638+atomTypeVars RelationalExprAtomType = S.empty

639+atomTypeVars (RelationAtomType attrs) = S.unions (map attrTypeVars (V.toList (attributesVec attrs)))

631640atomTypeVars (ConstructedAtomType _ tvMap) = M.keysSet tvMap

632641atomTypeVars (TypeVariableType nam) = S.singleton nam

633642

634643unimplemented :: HasCallStack => a

635−unimplemented = undefined

636−

637−--for serializing GraphRefRelationalExpr as part of transaction serialization

638−instance Binary (TupleExprsBase GraphRefTransactionMarker)

639−

640−instance Binary (TupleExprBase GraphRefTransactionMarker)

641−

642−instance Binary GraphRefRelationalExpr

643−

644−instance Binary (AtomExprBase GraphRefTransactionMarker)

645−

646−instance Binary (AttributeNamesBase GraphRefTransactionMarker)

647−

648−instance Binary (RestrictionPredicateExprBase GraphRefTransactionMarker)

649−

650−instance Binary (ExtendTupleExprBase GraphRefTransactionMarker)

651−

652−instance Binary GraphRefWithNameExpr

644+unimplemented = error "unimplemented"

653645

654−

646+makeBaseFunctor ''RelationalExprBase

src/lib/ProjectM36/Client.hs+163−293

@@ -1,4 +1,4 @@

1−{-# LANGUAGE DeriveAnyClass, DeriveGeneric, ScopedTypeVariables, MonoLocalBinds #-}

1+{-# LANGUAGE DeriveGeneric, ScopedTypeVariables, MonoLocalBinds, DerivingVia #-}

22{-|

33Module: ProjectM36.Client

@@ -9,6 +9,7 @@ module ProjectM36.Client

99 Connection(..),

1010 Port,

1111 Hostname,

12+ ServiceName,

1213 DatabaseName,

1314 ConnectionError(..),

1415 connectProjectM36,

@@ -43,6 +44,7 @@ module ProjectM36.Client

4344 defaultDatabaseName,

4445 defaultRemoteConnectionInfo,

4546 defaultHeadName,

47+ addClientNode,

4648 PersistenceStrategy(..),

4749 RelationalExpr,

4850 RelationalExprBase(..),

@@ -53,11 +55,9 @@ module ProjectM36.Client

5355 Attribute(..),

5456 MergeStrategy(..),

5557 attributesFromList,

56− createNodeId,

5758 createSessionAtCommit,

5859 createSessionAtHead,

5960 closeSession,

60− addClientNode,

6161 callTestTimeout_,

6262 RelationCardinality(..),

6363 TransactionGraphOperator(..),

@@ -67,7 +67,6 @@ module ProjectM36.Client

6767 TransGraphRelationalExpr,

6868 TransactionIdLookup(..),

6969 TransactionIdHeadBacktrack(..),

70− NodeId(..),

7170 Atom(..),

7271 Session,

7372 SessionId,

@@ -107,6 +106,7 @@ module ProjectM36.Client

107106 ) where

108107import ProjectM36.Base hiding (inclusionDependencies) --defined in this module as well

109108import qualified ProjectM36.Base as B

109+import ProjectM36.Serialise.Error ()

110110import ProjectM36.Error

111111import ProjectM36.Atomable

112112import ProjectM36.AtomFunction as AF

@@ -134,28 +134,16 @@ import ProjectM36.Relation (typesAsRelation)

134134import ProjectM36.ScriptSession (initScriptSession, ScriptSession)

135135import qualified ProjectM36.Relation as R

136136import Control.Exception.Base

137−import GHC.Conc.Sync

138−

139−import Network.Transport (Transport(closeTransport))

140−#if MIN_VERSION_network_transport_tcp(0,7,0)

141−import Network.Transport.TCP (createTransport, defaultTCPParameters, defaultTCPAddr)

142−import Network.Transport.TCP.Internal (encodeEndPointAddress)

143−#elif MIN_VERSION_network_transport_tcp(0,6,0)

144−import Network.Transport.TCP (createTransport, defaultTCPParameters)

145−import Network.Transport.TCP.Internal (encodeEndPointAddress)

146−#else

147−import Network.Transport.TCP (encodeEndPointAddress, createTransport, defaultTCPParameters)

148−#endif

137+import Control.Concurrent.STM

138+import Control.Concurrent.Async

149139

150−import Control.Distributed.Process.Node (newLocalNode, initRemoteTable, runProcess, LocalNode, forkProcess, closeLocalNode)

151−import Control.Distributed.Process.Extras.Internal.Types (whereisRemote)

152−import Control.Distributed.Process.ManagedProcess.Client (call, safeCall)

153140import Data.Either (isRight)

154141import Data.UUID.V4 (nextRandom)

155142import Data.Word

156−import Control.Distributed.Process (ProcessId, Process, receiveWait, send, match, NodeId(..), reconnect)

143+import Data.Hashable

157144import Control.Exception (IOException, handle, AsyncException, throwIO, fromException, Exception)

158145import Control.Concurrent.MVar

146+import Codec.Winery hiding (Schema, schema)

159147import qualified Data.Map as M

160148#if MIN_VERSION_stm_containers(1,0,0)

161149import qualified StmContainers.Map as StmMap

@@ -167,19 +155,19 @@ import qualified STMContainers.Set as StmSet

167155import qualified ProjectM36.Session as Sess

168156import ProjectM36.Session

169157import ProjectM36.Sessions

170−import Data.Binary (Binary)

171158import GHC.Generics (Generic)

172159import Control.DeepSeq (force)

173160import System.IO

174161import Data.Time.Clock

175−import Data.Typeable

162+import qualified Network.RPC.Curryer.Client as RPC

163+import qualified Network.RPC.Curryer.Server as RPC

164+import Network.Socket (Socket, AddrInfo(..), getAddrInfo, defaultHints, AddrInfoFlag(..), SocketType(..), ServiceName, hostAddressToTuple, SockAddr(..))

165+import GHC.Conc (unsafeIOToSTM)

176166

177167type Hostname = String

178168

179169type Port = Word16

180170

181−type DatabaseName = String

182−

183171-- | The type for notifications callbacks in the client. When a registered notification fires due to a changed relational expression evaluation, the server propagates the notifications to the clients in the form of the callback.

184172type NotificationCallback = NotificationName -> EvaluatedNotification -> IO ()

185173

@@ -199,15 +187,16 @@ data RequestTimeoutException = RequestTimeoutException

199187

200188instance Exception RequestTimeoutException

201189

202−-- | Construct a 'ConnectionInfo' to describe how to make the 'Connection'. The database can be run within the current process or running remotely via distributed-process.

203−data ConnectionInfo = InProcessConnectionInfo PersistenceStrategy NotificationCallback [GhcPkgPath]|

204− RemoteProcessConnectionInfo DatabaseName NodeId NotificationCallback

190+-- | Construct a 'ConnectionInfo' to describe how to make the 'Connection'. The database can be run within the current process or running remotely via RPC.

191+data ConnectionInfo = InProcessConnectionInfo PersistenceStrategy NotificationCallback [GhcPkgPath] |

192+ RemoteConnectionInfo DatabaseName Hostname ServiceName NotificationCallback

205193

206194type EvaluatedNotifications = M.Map NotificationName EvaluatedNotification

207195

208196-- | Used for callbacks from the server when monitored changes have been made.

209197newtype NotificationMessage = NotificationMessage EvaluatedNotifications

210− deriving (Binary, Eq, Show, Generic)

198+ deriving (Eq, Show, Generic)

199+ deriving Serialise via WineryVariant NotificationMessage

211200

212201-- | When a notification is fired, the 'reportOldExpr' is evaluated in the commit's pre-change context while the 'reportNewExpr' is evaluated in the post-change context and they are returned along with the original notification.

213202data EvaluatedNotification = EvaluatedNotification {

@@ -215,13 +204,10 @@ data EvaluatedNotification = EvaluatedNotification {

215204 reportOldRelation :: Either RelationalError Relation,

216205 reportNewRelation :: Either RelationalError Relation

217206 }

218− deriving(Binary, Eq, Show, Generic)

207+ deriving (Eq, Show, Generic)

208+ deriving Serialise via WineryRecord EvaluatedNotification

219209

220210

221−-- | Create a 'NodeId' for use in connecting to a remote server using distributed-process.

222−createNodeId :: Hostname -> Port -> NodeId

223−createNodeId host port = NodeId $ encodeEndPointAddress host (show port) 1

224−

225211-- | Use this for connecting to remote servers on the default port.

226212defaultServerPort :: Port

227213defaultServerPort = 6543

@@ -236,31 +222,16 @@ defaultHeadName = "master"

236222

237223-- | Create a connection configuration which connects to the localhost on the default server port and default server database name. The configured notification callback is set to ignore all events.

238224defaultRemoteConnectionInfo :: ConnectionInfo

239−defaultRemoteConnectionInfo = RemoteProcessConnectionInfo defaultDatabaseName (createNodeId "127.0.0.1" defaultServerPort) emptyNotificationCallback

225+defaultRemoteConnectionInfo =

226+ RemoteConnectionInfo defaultDatabaseName defaultServerHostname (show defaultServerPort) emptyNotificationCallback

240227

241−-- | The 'Connection' represents either local or remote access to a database. All operations flow through the connection.

242−type ClientNodes = StmSet.Set ProcessId

243−

244−-- internal structure specific to in-process connections

245−data InProcessConnectionConf = InProcessConnectionConf {

246− ipPersistenceStrategy :: PersistenceStrategy,

247− ipClientNodes :: ClientNodes,

248− ipSessions :: Sessions,

249− ipTransactionGraph :: TVar TransactionGraph,

250− ipScriptSession :: Maybe ScriptSession,

251− ipLocalNode :: LocalNode,

252− ipTransport :: Transport, -- we hold onto this so that we can close it gracefully

253− ipLocks :: Maybe (LockFile, MVar LockFileHash) -- nothing when NoPersistence

254− }

228+defaultServerHostname :: Hostname

229+defaultServerHostname = "localhost"

255230

256−data RemoteProcessConnectionConf = RemoteProcessConnectionConf {

257− rLocalNode :: LocalNode,

258− rProcessId :: ProcessId, --remote processId

259− rTransport :: Transport --the TCP socket transport

260− }

231+newtype RemoteConnectionConf = RemoteConnectionConf RPC.Connection

261232

262233data Connection = InProcessConnection InProcessConnectionConf |

263− RemoteProcessConnection RemoteProcessConnectionConf

234+ RemoteConnection RemoteConnectionConf

264235

265236-- | There are several reasons why a connection can fail.

266237data ConnectionError = SetupDatabaseDirectoryError PersistenceError |

@@ -273,46 +244,14 @@ data ConnectionError = SetupDatabaseDirectoryError PersistenceError |

273244remoteDBLookupName :: DatabaseName -> String

274245remoteDBLookupName = (++) "db-"

275246

276−createLocalNode :: IO (LocalNode, Transport)

277−createLocalNode = do

278−#if MIN_VERSION_network_transport_tcp(0,7,0)

279− eLocalTransport <- createTransport (defaultTCPAddr "127.0.0.1" "0") defaultTCPParameters

280−#elif MIN_VERSION_network_transport_tcp(0,6,0)

281− eLocalTransport <- createTransport "127.0.0.1" "0" (\sn -> ("127.0.0.1", sn)) defaultTCPParameters

282−#else

283− eLocalTransport <- createTransport "127.0.0.1" "0" defaultTCPParameters

284−#endif

285− case eLocalTransport of

286− Left err -> error ("failed to create transport: " ++ show err)

287− Right localTransport -> do

288− localNode <- newLocalNode localTransport initRemoteTable

289− pure (localNode, localTransport)

290−

291−notificationListener :: NotificationCallback -> Process ()

292−notificationListener callback = do

293− --pid <- getSelfPid

294− --liftIO $ putStrLn $ "LISTENER THREAD START " ++ show pid

295− _ <- forever $

296− receiveWait [

297− match (\(NotificationMessage eNots) ->

298− --say $ "NOTIFICATION: " ++ show eNots

299− -- when notifications are thrown, they are not adjusted for the current schema which could be problematic, but we don't have access to the current session here

300− liftIO $ mapM_ (uncurry callback) (M.toList eNots)

301− )

302− ]

303− --say "LISTENER THREAD EXIT"

304− pure ()

305−

306−startNotificationListener :: LocalNode -> NotificationCallback -> IO ProcessId

307−startNotificationListener localNode callback = forkProcess localNode (notificationListener callback)

308−

309247createScriptSession :: [String] -> IO (Maybe ScriptSession)

310248createScriptSession ghcPkgPaths = do

311249 eScriptSession <- initScriptSession ghcPkgPaths

312250 case eScriptSession of

313− Left err -> hPutStrLn stderr ("Failed to load scripting engine- scripting disabled: " ++ show err) >> pure Nothing --not a fatal error, but the scripting feature must be disabled

251+ Left err -> hPutStrLn stderr ("Warning: Haskell scripting disabled: " ++ show err) >> pure Nothing --not a fatal error, but the scripting feature must be disabled

314252 Right s -> pure (Just s)

315253

254+

316255-- | To create a 'Connection' to a remote or local database, create a 'ConnectionInfo' and call 'connectProjectM36'.

317256connectProjectM36 :: ConnectionInfo -> IO (Either ConnectionError Connection)

318257--create a new in-memory database/transaction graph

@@ -327,42 +266,63 @@ connectProjectM36 (InProcessConnectionInfo strat notificationCallback ghcPkgPath

327266 graphTvar <- newTVarIO freshGraph

328267 clientNodes <- StmSet.newIO

329268 sessions <- StmMap.newIO

330− (localNode, transport) <- createLocalNode

331− notificationPid <- startNotificationListener localNode notificationCallback

332269 mScriptSession <- createScriptSession ghcPkgPaths

333−

270+ notifAsync <- startNotificationListener clientNodes notificationCallback

334271 let conn = InProcessConnection InProcessConnectionConf {

335272 ipPersistenceStrategy = strat,

336273 ipClientNodes = clientNodes,

337274 ipSessions = sessions,

338275 ipTransactionGraph = graphTvar,

339276 ipScriptSession = mScriptSession,

340− ipLocalNode = localNode,

341− ipTransport = transport,

342− ipLocks = Nothing}

343− addClientNode conn notificationPid

277+ ipLocks = Nothing,

278+ ipCallbackAsync = notifAsync

279+ }

344280 pure (Right conn)

345281 MinimalPersistence dbdir -> connectPersistentProjectM36 strat NoDiskSync dbdir freshGraph notificationCallback ghcPkgPaths

346282 CrashSafePersistence dbdir -> connectPersistentProjectM36 strat FsyncDiskSync dbdir freshGraph notificationCallback ghcPkgPaths

347283

348−connectProjectM36 (RemoteProcessConnectionInfo databaseName serverNodeId notificationCallback) = do

349− connStatus <- newEmptyMVar

350− (localNode, transport) <- createLocalNode

351− let dbName = remoteDBLookupName databaseName

352− --putStrLn $ "Connecting to " ++ show serverNodeId ++ " " ++ dbName

353− notificationListenerPid <- startNotificationListener localNode notificationCallback

354− runProcess localNode $ do

355− --even a failed connection retains an open socket!

356− mServerProcessId <- whereisRemote serverNodeId dbName

357− case mServerProcessId of

358− Nothing -> liftIO $ putMVar connStatus $ Left (NoSuchDatabaseByNameError databaseName)

359− Just serverProcessId -> do

360− loginConfirmation <- safeLogin (Login notificationListenerPid) serverProcessId

361− if not loginConfirmation then

362− liftIO $ putMVar connStatus (Left LoginError)

363− else

364− liftIO $ putMVar connStatus (Right $ RemoteProcessConnection RemoteProcessConnectionConf {rLocalNode = localNode, rProcessId = serverProcessId, rTransport = transport})

365− takeMVar connStatus

284+connectProjectM36 (RemoteConnectionInfo dbName hostName servicePort notificationCallback) = do

285+ --TODO- add notification callback thread

286+ let resolutionHints = defaultHints { addrFlags = [AI_NUMERICHOST, AI_NUMERICSERV],

287+ addrSocketType = Stream

288+ }

289+ resolved <- getAddrInfo (Just resolutionHints) (Just hostName) (Just servicePort)

290+ case resolved of

291+ [] -> error ("DNS resolution failed for" <> hostName <> ":" <> servicePort)

292+ addrInfo:_ -> do

293+ --supports IPv4 only for now

294+ let (SockAddrInet port addr) = addrAddress addrInfo

295+ notificationHandlers =

296+ [RPC.ClientAsyncRequestHandler $

297+ \(NotificationMessage notifications') ->

298+ forM_ (M.toList notifications') (uncurry notificationCallback)

299+ ]

300+ let connectExcHandler (e :: IOException) = pure $ Left (IOExceptionError e)

301+ eConn <- (Right <$> RPC.connect notificationHandlers (hostAddressToTuple addr) port) `catch` connectExcHandler

302+ case eConn of

303+ Left err -> pure (Left err)

304+ Right conn -> do

305+ eRet <- RPC.call conn (Login dbName)

306+ case eRet of

307+ Left err -> error (show err)

308+ Right False -> error "wtf"

309+ Right True ->

310+ --TODO handle connection errors!

311+ pure (Right (RemoteConnection (RemoteConnectionConf conn)))

312+

313+--convert RPC errors into exceptions

314+convertRPCErrors :: RPC.ConnectionError -> IO a

315+convertRPCErrors err =

316+ case err of

317+ RPC.TimeoutError -> throw RequestTimeoutException

318+ RPC.CodecError msg -> error $ "decoding message failed on server: " <> msg

319+ RPC.ExceptionError msg -> error $ "server threw exception: " <> msg

320+

321+addClientNode :: Connection -> RPC.Locking Socket -> IO ()

322+addClientNode (RemoteConnection _) _ = error "addClientNode called on remote connection"

323+addClientNode (InProcessConnection conf) lockSock = atomically (StmSet.insert clientInfo (ipClientNodes conf))

324+ where

325+ clientInfo = RemoteClientInfo lockSock

366326

367327connectPersistentProjectM36 :: PersistenceStrategy ->

368328 DiskSync ->

@@ -387,29 +347,34 @@ connectPersistentProjectM36 strat sync dbdir freshGraph notificationCallback ghc

387347 tvarGraph <- newTVarIO graph'

388348 sessions <- StmMap.newIO

389349 clientNodes <- StmSet.newIO

390− (localNode, transport) <- createLocalNode

391350 lockMVar <- newMVar digest

351+ notifAsync <- startNotificationListener clientNodes notificationCallback

392352 let conn = InProcessConnection InProcessConnectionConf {

393353 ipPersistenceStrategy = strat,

394354 ipClientNodes = clientNodes,

395355 ipSessions = sessions,

396356 ipTransactionGraph = tvarGraph,

397357 ipScriptSession = mScriptSession,

398− ipLocalNode = localNode,

399− ipTransport = transport,

400− ipLocks = Just (lockFileH, lockMVar)

358+ ipLocks = Just (lockFileH, lockMVar),

359+ ipCallbackAsync = notifAsync

401360 }

402−

403− notificationPid <- startNotificationListener localNode notificationCallback

404− addClientNode conn notificationPid

405361 pure (Right conn)

406−

362+

363+--startup local async process to handle notification callbacks

364+startNotificationListener :: ClientNodes -> NotificationCallback -> IO (Async ())

365+startNotificationListener cNodes notificationCallback = do

366+ inProcessClientInfo@(InProcessClientInfo notifMVar) <- InProcessClientInfo <$> newEmptyMVar

367+ atomically $ StmSet.insert inProcessClientInfo cNodes

368+ async $ forever $ do

369+ notifs <- takeMVar notifMVar

370+ forM_ (M.toList notifs) $ uncurry notificationCallback

371+

407372-- | Create a new session at the transaction id and return the session's Id.

408373createSessionAtCommit :: Connection -> TransactionId -> IO (Either RelationalError SessionId)

409374createSessionAtCommit conn@(InProcessConnection _) commitId = do

410375 newSessionId <- nextRandom

411376 atomically $ createSessionAtCommit_ commitId newSessionId conn

412−createSessionAtCommit conn@(RemoteProcessConnection _) uuid = remoteCall conn (CreateSessionAtCommit uuid)

377+createSessionAtCommit conn@(RemoteConnection _) uuid = remoteCall conn (CreateSessionAtCommit uuid)

413378

414379createSessionAtCommit_ :: TransactionId -> SessionId -> Connection -> STM (Either RelationalError SessionId)

415380createSessionAtCommit_ commitId newSessionId (InProcessConnection conf) = do

@@ -426,7 +391,7 @@ createSessionAtCommit_ commitId newSessionId (InProcessConnection conf) = do

426391 Nothing -> do

427392 StmMap.insert (Session freshDiscon defaultSchemaName) newSessionId sessions

428393 pure $ Right newSessionId

429−createSessionAtCommit_ _ _ (RemoteProcessConnection _) = error "createSessionAtCommit_ called on remote connection"

394+createSessionAtCommit_ _ _ (RemoteConnection _) = error "createSessionAtCommit_ called on remote connection"

430395

431396-- | Call 'createSessionAtHead' with a transaction graph's head's name to create a new session pinned to that head. This function returns a 'SessionId' which can be used in other function calls to reference the point in the transaction graph.

432397createSessionAtHead :: Connection -> HeadName -> IO (Either RelationalError SessionId)

@@ -438,22 +403,18 @@ createSessionAtHead conn@(InProcessConnection conf) headn = do

438403 case transactionForHead headn graph of

439404 Nothing -> pure $ Left (NoSuchHeadNameError headn)

440405 Just trans -> createSessionAtCommit_ (transactionId trans) newSessionId conn

441−createSessionAtHead conn@(RemoteProcessConnection _) headn = remoteCall conn (CreateSessionAtHead headn)

442−

443−-- | Used internally for server connections to keep track of remote nodes for the purpose of sending notifications later.

444−addClientNode :: Connection -> ProcessId -> IO ()

445−addClientNode (RemoteProcessConnection _) _ = error "addClientNode called on remote connection"

446−addClientNode (InProcessConnection conf) newProcessId = atomically (StmSet.insert newProcessId (ipClientNodes conf))

406+createSessionAtHead conn@(RemoteConnection _) headn = remoteCall conn (CreateSessionAtHead headn)

447407

448408-- | Discards a session, eliminating any uncommitted changes present in the session.

449409closeSession :: SessionId -> Connection -> IO ()

450410closeSession sessionId (InProcessConnection conf) =

451411 atomically $ StmMap.delete sessionId (ipSessions conf)

452−closeSession sessionId conn@(RemoteProcessConnection _) = remoteCall conn (CloseSession sessionId)

412+closeSession sessionId conn@(RemoteConnection _) = remoteCall conn (CloseSession sessionId)

453413

454414-- | 'close' cleans up the database access connection and closes any relevant sockets.

455415close :: Connection -> IO ()

456416close (InProcessConnection conf) = do

417+ cancel (ipCallbackAsync conf)

457418 atomically $ do

458419 let sessions = ipSessions conf

459420#if MIN_VERSION_stm_containers(1,0,0)

@@ -462,22 +423,18 @@ close (InProcessConnection conf) = do

462423 StmMap.deleteAll sessions

463424#endif

464425 pure ()

465− closeLocalNode (ipLocalNode conf)

466− closeTransport (ipTransport conf)

467426 let mLocks = ipLocks conf

468427 case mLocks of

469428 Nothing -> pure ()

470429 Just (lockFileH, _) -> closeLockFile lockFileH

471430

472−close conn@(RemoteProcessConnection conf) = do

473− _ <- remoteCall conn Logout :: IO Bool

474− closeLocalNode (rLocalNode conf)

475− closeTransport (rTransport conf)

431+close (RemoteConnection (RemoteConnectionConf conn)) =

432+ RPC.close conn

476433

477434--used only by the server EntryPoints

478435closeRemote_ :: Connection -> IO ()

479436closeRemote_ (InProcessConnection _) = error "invalid call of closeRemote_ on InProcessConnection"

480−closeRemote_ (RemoteProcessConnection conf) = runProcess (rLocalNode conf) (reconnect (rProcessId conf))

437+closeRemote_ (RemoteConnection (RemoteConnectionConf conn)) = RPC.close conn

481438

482439 --we need to actually close the localNode's connection to the remote

483440--within the database server, we must catch and handle all exception lest they take down the database process- this handling might be different for other use-cases

@@ -488,35 +445,15 @@ excEither = handle handler

488445 where

489446 handler exc | Just (_ :: AsyncException) <- fromException exc = throwIO exc

490447 | otherwise = pure (Left (UnhandledExceptionError (show exc)))

491−

492−runProcessResult :: LocalNode -> Process a -> IO a

493−runProcessResult localNode proc = do

494− ret <- newEmptyMVar

495− runProcess localNode $ do

496− val <- proc

497− liftIO $ putMVar ret val

498− takeMVar ret

499−

500−safeLogin :: Login -> ProcessId -> Process Bool

501−safeLogin login procId = do

502− ret <- call procId login

503− case ret of

504− Left (_ :: ServerError) -> pure False

505− Right val -> pure val

506448

507−remoteCall :: (Binary a, Binary b, Typeable a, Typeable b) => Connection -> a -> IO b

449+

450+remoteCall :: (Serialise a, Serialise b) => Connection -> a -> IO b

508451remoteCall (InProcessConnection _ ) _ = error "remoteCall called on local connection"

509−remoteCall (RemoteProcessConnection conf) arg = runProcessResult localNode $ do

510− ret <- safeCall serverProcessId arg

511− case ret of

512− Left err -> error ("server died: " ++ show err)

513− Right ret' -> case ret' of

514− Left RequestTimeoutError -> liftIO (throwIO RequestTimeoutException)

515− Left (ProcessDiedError _) -> liftIO (throwIO RemoteProcessDiedException)

516− Right val -> pure val

517− where

518− localNode = rLocalNode conf

519− serverProcessId = rProcessId conf

452+remoteCall (RemoteConnection (RemoteConnectionConf rpcConn)) arg = do

453+ eRet <- RPC.call rpcConn arg

454+ case eRet of

455+ Left err -> convertRPCErrors err

456+ Right val -> pure val

520457

521458sessionForSessionId :: SessionId -> Sessions -> STM (Either RelationalError Session)

522459sessionForSessionId sessionId sessions =

@@ -551,7 +488,7 @@ currentSchemaName sessionId (InProcessConnection conf) = atomically $ do

551488 case eSession of

552489 Left err -> pure (Left err)

553490 Right session -> pure (Right (Sess.schemaName session))

554−currentSchemaName sessionId conn@(RemoteProcessConnection _) = remoteCall conn (RetrieveCurrentSchemaName sessionId)

491+currentSchemaName sessionId conn@(RemoteConnection _) = remoteCall conn (RetrieveCurrentSchemaName sessionId)

555492

556493-- | Switch to the named isomorphic schema.

557494setCurrentSchemaName :: SessionId -> Connection -> SchemaName -> IO (Either RelationalError ())

@@ -563,7 +500,7 @@ setCurrentSchemaName sessionId (InProcessConnection conf) sname = atomically $ d

563500 Right session -> case Sess.setSchemaName sname session of

564501 Left err -> pure (Left err)

565502 Right newSession -> StmMap.insert newSession sessionId sessions >> pure (Right ())

566−setCurrentSchemaName sessionId conn@(RemoteProcessConnection _) sname = remoteCall conn (ExecuteSetCurrentSchema sessionId sname)

503+setCurrentSchemaName sessionId conn@(RemoteConnection _) sname = remoteCall conn (ExecuteSetCurrentSchema sessionId sname)

567504

568505-- | Execute a relational expression in the context of the session and connection. Relational expressions are queries and therefore cannot alter the database.

569506executeRelationalExpr :: SessionId -> Connection -> RelationalExpr -> IO (Either RelationalError Relation)

@@ -587,7 +524,7 @@ executeRelationalExpr sessionId (InProcessConnection conf) expr = excEither $ at

587524 Right rel -> pure (force (Right rel)) -- this is necessary so that any undefined/error exceptions are spit out here

588525 Left err -> pure (Left err)

589526

590−executeRelationalExpr sessionId conn@(RemoteProcessConnection _) relExpr = remoteCall conn (ExecuteRelationalExpr sessionId relExpr)

527+executeRelationalExpr sessionId conn@(RemoteConnection _) relExpr = remoteCall conn (ExecuteRelationalExpr sessionId relExpr)

591528

592529-- | Execute a database context expression in the context of the session and connection. Database expressions modify the current session's disconnected transaction but cannot modify the transaction graph.

593530executeDatabaseContextExpr :: SessionId -> Connection -> DatabaseContextExpr -> IO (Either RelationalError ())

@@ -621,7 +558,7 @@ executeDatabaseContextExpr sessionId (InProcessConnection conf) expr = excEither

621558 newSession = Session newDiscon (Sess.schemaName session)

622559 StmMap.insert newSession sessionId sessions

623560 pure (Right ())

624−executeDatabaseContextExpr sessionId conn@(RemoteProcessConnection _) dbExpr = remoteCall conn (ExecuteDatabaseContextExpr sessionId dbExpr)

561+executeDatabaseContextExpr sessionId conn@(RemoteConnection _) dbExpr = remoteCall conn (ExecuteDatabaseContextExpr sessionId dbExpr)

625562

626563-- | Similar to a git rebase, 'autoMergeToHead' atomically creates a temporary branch and merges it to the latest commit of the branch referred to by the 'HeadName' and commits the merge. This is useful to reduce incidents of 'TransactionIsNotAHeadError's but at the risk of merge errors (thus making it similar to rebasing). Alternatively, as an optimization, if a simple commit is possible (meaning that the head has not changed), then a fast-forward commit takes place instead.

627564autoMergeToHead :: SessionId -> Connection -> MergeStrategy -> HeadName -> IO (Either RelationalError ())

@@ -650,7 +587,7 @@ autoMergeToHead sessionId (InProcessConnection conf) strat headName' = do

650587 Left err -> pure (Left err)

651588 Right ((discon', graph'), transactionIdsAdded) ->

652589 pure (Right (discon', graph', transactionIdsAdded))

653−autoMergeToHead sessionId conn@(RemoteProcessConnection _) strat headName' = remoteCall conn (ExecuteAutoMergeToHead sessionId strat headName')

590+autoMergeToHead sessionId conn@(RemoteConnection _) strat headName' = remoteCall conn (ExecuteAutoMergeToHead sessionId strat headName')

654591

655592-- | Execute a database context IO-monad-based expression for the given session and connection. `DatabaseContextIOExpr`s modify the DatabaseContext but cannot be purely implemented.

656593--this is almost completely identical to executeDatabaseContextExpr above

@@ -676,22 +613,8 @@ executeDatabaseContextIOExpr sessionId (InProcessConnection conf) expr = excEith

676613 context' = RE.dbc_context newState

677614 atomically $ StmMap.insert newSession sessionId sessions

678615 pure (Right ())

679−executeDatabaseContextIOExpr sessionId conn@(RemoteProcessConnection _) dbExpr = remoteCall conn (ExecuteDatabaseContextIOExpr sessionId dbExpr)

616+executeDatabaseContextIOExpr sessionId conn@(RemoteConnection _) dbExpr = remoteCall conn (ExecuteDatabaseContextIOExpr sessionId dbExpr)

680617

681−{-

682−executeGraphExprSTM_ :: TransactionId -> SessionId -> Session -> Sessions -> TransactionGraphOperator -> TransactionGraph -> TVar TransactionGraph -> STM (Either RelationalError (TransactionGraph, DisconnectedTransaction)

683−executeGraphExprSTM_ freshId sessionId session sessions graphExpr graph graphTVar= do

684− case evalGraphOp freshId (Sess.disconnectedTransaction session) graph graphExpr of

685− Left err -> do

686− when updateGraphOnError (writeTVar graphTVar graph)

687− pure $ Left err

688− Right (discon', graph') -> do

689− writeTVar graphTVar graph'

690− let newSession = Session discon' (Sess.schemaName session)

691− STMMap.insert newSession sessionId sessions

692− pure $ Right graph'

693−-}

694−

695618-- process notifications for commits

696619executeCommitExprSTM_

697620 :: TransactionGraph

@@ -732,78 +655,8 @@ executeGraphExpr sessionId (InProcessConnection conf) graphExpr = excEither $ do

732655 --if freshId appears in the graph, then we need to pass it on

733656 let transIds = [freshId | isRight (RE.transactionForId freshId graph')]

734657 pure (Right (discon', graph', transIds))

735−{-

736−executeGraphExpr sessionId (InProcessConnection conf) graphExpr = excEither $ do

737− let strat = ipPersistenceStrategy conf

738− clientNodes = ipClientNodes conf

739− sessions = ipSessions conf

740− graphTvar = ipTransactionGraph conf

741− mLockFileH = ipLocks conf

742− lockHandler body = case graphExpr of

743− Commit -> case mLockFileH of

744− Nothing -> body False

745− Just (lockFileH, lockMVar) -> let acquireLocks = do

746− lastWrittenDigest <- takeMVar lockMVar

747− lockFile lockFileH WriteLock

748− latestDigest <- readGraphTransactionIdDigest strat

749− pure (latestDigest /= lastWrittenDigest)

750−

751− releaseLocks _ = do

752− --still holding the lock- get the latest digest

753− gDigest <- readGraphTransactionIdDigest strat

754− unlockFile lockFileH

755− putMVar lockMVar gDigest

756− in bracket acquireLocks releaseLocks body

757− _ -> body False

758− freshId <- nextRandom

759− lockHandler $ \dbWrittenByOtherProcess -> do

760− --if the database file has been updated since we wrote it last, load it before trying to sync our version done- this can result in TransactionNotAHeadErrors

761− --read transaction data and compare to existing graph

762− --in the future, we can detect if updated transaction graph can be safely merged (such as with a transaction on a separate head) (rebase-able commits should force the user to rebase from the client to confirm that the action makes sense)

763− manip <- atomically $ do

764− eSession <- sessionForSessionId sessionId sessions

765− --handle graph update by other process

766− oldGraph <- readTVar graphTvar

767− case eSession of

768− Left err -> pure (Left err)

769− Right session -> do

770− let mScriptSession = ipScriptSession conf

771− dbdir = case strat of

772− MinimalPersistence x -> x

773− CrashSafePersistence x -> x

774− _ -> error "accessing dbdir on non-persisted connection"

775− eRefreshedGraph <- if dbWrittenByOtherProcess then

776− unsafeIOToSTM (transactionGraphLoad dbdir oldGraph mScriptSession)

777− else

778− pure (Right oldGraph)

779− case eRefreshedGraph of

780− Left err -> pure (Left (DatabaseLoadError err))

781− Right refreshedGraph -> do

782− --snip it

783− eGraph <- executeGraphExprSTM_ dbWrittenByOtherProcess freshId sessionId session sessions graphExpr refreshedGraph graphTvar

784− --snip it

785− case eGraph of

786− Left err -> pure (Left err)

787− Right newGraph -> do

788− --handle commit

789− if isCommit graphExpr then do

790− case transactionForId (Sess.parentId session) oldGraph of

791− Left err -> pure $ Left err

792− Right previousTrans -> do

793− (evaldNots, nodes) <- executeCommitExprSTM_ (Trans.concreteDatabaseContext previousTrans) (Sess.concreteDatabaseContext session) clientNodes

794− nodesToNotify <- toList (StmSet.stream nodes)

795− pure $ Right (evaldNots, nodesToNotify, newGraph)

796− else

797− pure $ Right (M.empty, [], newGraph)

798− case manip of

799− Left err -> return $ Just err

800− Right (notsToFire, nodesToNotify, newGraph) -> do

801− --update filesystem database, if necessary

802− processTransactionGraphPersistence strat newGraph

803− sendNotifications nodesToNotify (ipLocalNode conf) notsToFire

804− pure Nothing

805−-}

806−executeGraphExpr sessionId conn@(RemoteProcessConnection _) graphExpr = remoteCall conn (ExecuteGraphExpr sessionId graphExpr)

658+

659+executeGraphExpr sessionId conn@(RemoteConnection _) graphExpr = remoteCall conn (ExecuteGraphExpr sessionId graphExpr)

807660

808661-- | A trans-graph expression is a relational query executed against the entirety of a transaction graph.

809662executeTransGraphRelationalExpr :: SessionId -> Connection -> TransGraphRelationalExpr -> IO (Either RelationalError Relation)

@@ -811,10 +664,7 @@ executeTransGraphRelationalExpr _ (InProcessConnection conf) tgraphExpr = excEit

811664 let graphTvar = ipTransactionGraph conf

812665 graph <- readTVar graphTvar

813666 pure $ force $ optimizeAndEvalTransGraphRelationalExpr graph tgraphExpr

814−{- case runReader (RE.evalRelationalExpr relExpr) (RE.mkRelationalExprState DBC.empty) of

815− Left err -> pure (Left err)

816− Right rel -> pure (force (Right rel))-}

817−executeTransGraphRelationalExpr sessionId conn@(RemoteProcessConnection _) tgraphExpr = remoteCall conn (ExecuteTransGraphRelationalExpr sessionId tgraphExpr)

667+executeTransGraphRelationalExpr sessionId conn@(RemoteConnection _) tgraphExpr = remoteCall conn (ExecuteTransGraphRelationalExpr sessionId tgraphExpr)

818668

819669-- | Schema expressions manipulate the isomorphic schemas for the current 'DatabaseContext'.

820670executeSchemaExpr :: SessionId -> Connection -> Schema.SchemaExpr -> IO (Either RelationalError ())

@@ -837,23 +687,24 @@ executeSchemaExpr sessionId (InProcessConnection conf) schemaExpr = atomically $

837687 newSession = Session (DisconnectedTransaction (Discon.parentId discon) newSchemas False) (Sess.schemaName session)

838688 StmMap.insert newSession sessionId sessions

839689 pure (Right ())

840−executeSchemaExpr sessionId conn@(RemoteProcessConnection _) schemaExpr = remoteCall conn (ExecuteSchemaExpr sessionId schemaExpr)

690+executeSchemaExpr sessionId conn@(RemoteConnection _) schemaExpr = remoteCall conn (ExecuteSchemaExpr sessionId schemaExpr)

841691

842692-- | After modifying a 'DatabaseContext', 'commit' the transaction to the transaction graph at the head which the session is referencing. This will also trigger checks for any notifications which need to be propagated.

843693commit :: SessionId -> Connection -> IO (Either RelationalError ())

844694commit sessionId conn@(InProcessConnection _) = executeGraphExpr sessionId conn Commit

845−commit sessionId conn@(RemoteProcessConnection _) = remoteCall conn (ExecuteGraphExpr sessionId Commit)

846−

847−sendNotifications :: [ProcessId] -> LocalNode -> EvaluatedNotifications -> IO ()

848−sendNotifications pids localNode nots = mapM_ sendNots pids

849− where

850− sendNots remoteClientPid =

851− unless (M.null nots) $ runProcess localNode $ send remoteClientPid (NotificationMessage nots)

852−

695+commit sessionId conn@(RemoteConnection _) = remoteCall conn (ExecuteGraphExpr sessionId Commit)

696+

697+sendNotifications :: [ClientInfo] -> EvaluatedNotifications -> IO ()

698+sendNotifications clients notifs =

699+ unless (M.null notifs) $ forM_ clients sender

700+ where

701+ sender (RemoteClientInfo sock) = RPC.sendMessage sock (NotificationMessage notifs)

702+ sender (InProcessClientInfo tvar) = putMVar tvar notifs

703+

853704-- | Discard any changes made in the current 'Session' and 'DatabaseContext'. This resets the disconnected transaction to reference the original database context of the parent transaction and is a very cheap operation.

854705rollback :: SessionId -> Connection -> IO (Either RelationalError ())

855706rollback sessionId conn@(InProcessConnection _) = executeGraphExpr sessionId conn Rollback

856−rollback sessionId conn@(RemoteProcessConnection _) = remoteCall conn (ExecuteGraphExpr sessionId Rollback)

707+rollback sessionId conn@(RemoteConnection _) = remoteCall conn (ExecuteGraphExpr sessionId Rollback)

857708

858709-- | Write the transaction graph to disk. This function can be used to incrementally write new transactions to disk.

859710processTransactionGraphPersistence :: PersistenceStrategy -> [TransactionId] -> TransactionGraph -> IO ()

@@ -869,7 +720,7 @@ readGraphTransactionIdDigest (CrashSafePersistence dbdir) = readGraphTransaction

869720-- | Return a relation whose type would match that of the relational expression if it were executed. This is useful for checking types and validating a relational expression's types.

870721typeForRelationalExpr :: SessionId -> Connection -> RelationalExpr -> IO (Either RelationalError Relation)

871722typeForRelationalExpr sessionId conn@(InProcessConnection _) relExpr = atomically $ typeForRelationalExprSTM sessionId conn relExpr

872−typeForRelationalExpr sessionId conn@(RemoteProcessConnection _) relExpr = remoteCall conn (ExecuteTypeForRelationalExpr sessionId relExpr)

723+typeForRelationalExpr sessionId conn@(RemoteConnection _) relExpr = remoteCall conn (ExecuteTypeForRelationalExpr sessionId relExpr)

873724

874725typeForRelationalExprSTM :: SessionId -> Connection -> RelationalExpr -> STM (Either RelationalError Relation)

875726typeForRelationalExprSTM sessionId (InProcessConnection conf) relExpr = do

@@ -906,7 +757,7 @@ inclusionDependencies sessionId (InProcessConnection conf) = do

906757 else

907758 pure (Schema.inclusionDependenciesInSchema schema (B.inclusionDependencies context))

908759

909−inclusionDependencies sessionId conn@(RemoteProcessConnection _) = remoteCall conn (RetrieveInclusionDependencies sessionId)

760+inclusionDependencies sessionId conn@(RemoteConnection _) = remoteCall conn (RetrieveInclusionDependencies sessionId)

910761

911762typeConstructorMapping :: SessionId -> Connection -> IO (Either RelationalError TypeConstructorMapping)

912763typeConstructorMapping sessionId (InProcessConnection conf) = do

@@ -917,7 +768,7 @@ typeConstructorMapping sessionId (InProcessConnection conf) = do

917768 Left err -> pure $ Left err

918769 Right (session, _) -> --warning, no schema support for typeconstructors

919770 pure (Right (B.typeConstructorMapping (Sess.concreteDatabaseContext session)))

920−typeConstructorMapping sessionId conn@(RemoteProcessConnection _) = remoteCall conn (RetrieveTypeConstructorMapping sessionId)

771+typeConstructorMapping sessionId conn@(RemoteConnection _) = remoteCall conn (RetrieveTypeConstructorMapping sessionId)

921772

922773-- | Return an optimized database expression which is logically equivalent to the input database expression. This function can be used to determine which expression will actually be evaluated.

923774planForDatabaseContextExpr :: SessionId -> Connection -> DatabaseContextExpr -> IO (Either RelationalError GraphRefDatabaseContextExpr)

@@ -937,7 +788,7 @@ planForDatabaseContextExpr sessionId (InProcessConnection conf) dbExpr = do

937788 else -- don't show any optimization because the current optimization infrastructure relies on access to the base context- this probably underscores the need for each schema to have its own DatabaseContext, even if it is generated on-the-fly-}

938789 pure (Left NonConcreteSchemaPlanError)

939790

940−planForDatabaseContextExpr sessionId conn@(RemoteProcessConnection _) dbExpr = remoteCall conn (RetrievePlanForDatabaseContextExpr sessionId dbExpr)

791+planForDatabaseContextExpr sessionId conn@(RemoteConnection _) dbExpr = remoteCall conn (RetrievePlanForDatabaseContextExpr sessionId dbExpr)

941792

942793-- | Return a relation which represents the current state of the global transaction graph. The attributes are

943794-- * current- boolean attribute representing whether or not the current session references this transaction

@@ -955,7 +806,7 @@ transactionGraphAsRelation sessionId (InProcessConnection conf) = do

955806 Right session ->

956807 graphAsRelation (Sess.disconnectedTransaction session) <$> readTVar tvar

957808

958−transactionGraphAsRelation sessionId conn@(RemoteProcessConnection _) = remoteCall conn (RetrieveTransactionGraph sessionId)

809+transactionGraphAsRelation sessionId conn@(RemoteConnection _) = remoteCall conn (RetrieveTransactionGraph sessionId)

959810

960811-- | Returns the names and types of the relation variables in the current 'Session'.

961812relationVariablesAsRelation :: SessionId -> Connection -> IO (Either RelationalError Relation)

@@ -977,7 +828,7 @@ relationVariablesAsRelation sessionId (InProcessConnection conf) = do

977828 let schemaContext = context {relationVariables = relvars }

978829 pure $ RE.relationVariablesAsRelation schemaContext graph

979830

980−relationVariablesAsRelation sessionId conn@(RemoteProcessConnection _) = remoteCall conn (RetrieveRelationVariableSummary sessionId)

831+relationVariablesAsRelation sessionId conn@(RemoteConnection _) = remoteCall conn (RetrieveRelationVariableSummary sessionId)

981832

982833-- | Returns the names and types of the atom functions in the current 'Session'.

983834atomFunctionsAsRelation :: SessionId -> Connection -> IO (Either RelationalError Relation)

@@ -990,7 +841,7 @@ atomFunctionsAsRelation sessionId (InProcessConnection conf) = do

990841 Right (session, _) ->

991842 pure (AF.atomFunctionsAsRelation (atomFunctions (concreteDatabaseContext session)))

992843

993−atomFunctionsAsRelation sessionId conn@(RemoteProcessConnection _) = remoteCall conn (RetrieveAtomFunctionSummary sessionId)

844+atomFunctionsAsRelation sessionId conn@(RemoteConnection _) = remoteCall conn (RetrieveAtomFunctionSummary sessionId)

994845

995846databaseContextFunctionsAsRelation :: SessionId -> Connection -> IO (Either RelationalError Relation)

996847databaseContextFunctionsAsRelation sessionId (InProcessConnection conf) = do

@@ -1002,7 +853,7 @@ databaseContextFunctionsAsRelation sessionId (InProcessConnection conf) = do

1002853 Right (session, _) ->

1003854 pure (DCF.databaseContextFunctionsAsRelation (dbcFunctions (concreteDatabaseContext session)))

1004855

1005−databaseContextFunctionsAsRelation sessionId conn@(RemoteProcessConnection _) = remoteCall conn (RetrieveDatabaseContextFunctionSummary sessionId)

856+databaseContextFunctionsAsRelation sessionId conn@(RemoteConnection _) = remoteCall conn (RetrieveDatabaseContextFunctionSummary sessionId)

1006857

1007858-- | Returns the transaction id for the connection's disconnected transaction committed parent transaction.

1008859headTransactionId :: SessionId -> Connection -> IO (Either RelationalError TransactionId)

@@ -1013,7 +864,7 @@ headTransactionId sessionId (InProcessConnection conf) = do

1013864 case eSession of

1014865 Left err -> pure (Left err)

1015866 Right session -> pure $ Right (Sess.parentId session)

1016−headTransactionId sessionId conn@(RemoteProcessConnection _) = remoteCall conn (RetrieveHeadTransactionId sessionId)

867+headTransactionId sessionId conn@(RemoteConnection _) = remoteCall conn (RetrieveHeadTransactionId sessionId)

1017868

1018869headNameSTM_ :: SessionId -> Sessions -> TVar TransactionGraph -> STM (Either RelationalError HeadName)

1019870headNameSTM_ sessionId sessions graphTvar = do

@@ -1033,7 +884,7 @@ headName sessionId (InProcessConnection conf) = do

1033884 let sessions = ipSessions conf

1034885 graphTvar = ipTransactionGraph conf

1035886 atomically (headNameSTM_ sessionId sessions graphTvar)

1036−headName sessionId conn@(RemoteProcessConnection _) = remoteCall conn (ExecuteHeadName sessionId)

887+headName sessionId conn@(RemoteConnection _) = remoteCall conn (ExecuteHeadName sessionId)

1037888

1038889-- | Returns a listing of all available atom types.

1039890atomTypesAsRelation :: SessionId -> Connection -> IO (Either RelationalError Relation)

@@ -1047,7 +898,7 @@ atomTypesAsRelation sessionId (InProcessConnection conf) = do

1047898 case typesAsRelation (B.typeConstructorMapping (Sess.concreteDatabaseContext session)) of

1048899 Left err -> pure (Left err)

1049900 Right rel -> pure (Right rel)

1050−atomTypesAsRelation sessionId conn@(RemoteProcessConnection _) = remoteCall conn (RetrieveAtomTypesAsRelation sessionId)

901+atomTypesAsRelation sessionId conn@(RemoteConnection _) = remoteCall conn (RetrieveAtomTypesAsRelation sessionId)

1051902

1052903disconnectedTransactionIsDirty :: SessionId -> Connection -> IO (Either RelationalError Bool)

1053904disconnectedTransactionIsDirty sessionId (InProcessConnection conf) = do

@@ -1058,12 +909,12 @@ disconnectedTransactionIsDirty sessionId (InProcessConnection conf) = do

1058909 Left err -> pure (Left err)

1059910 Right session ->

1060911 pure (Right (isDirty session))

1061−disconnectedTransactionIsDirty sessionId conn@(RemoteProcessConnection _) = remoteCall conn (RetrieveSessionIsDirty sessionId)

912+disconnectedTransactionIsDirty sessionId conn@(RemoteConnection _) = remoteCall conn (RetrieveSessionIsDirty sessionId)

1062913

1063914--used only for testing- we expect this to throw an exception

1064915callTestTimeout_ :: SessionId -> Connection -> IO Bool

1065916callTestTimeout_ _ (InProcessConnection _) = error "bad testing call"

1066−callTestTimeout_ sessionId conn@(RemoteProcessConnection _) = remoteCall conn (TestTimeout sessionId)

917+callTestTimeout_ sessionId conn@(RemoteConnection _) = remoteCall conn (TestTimeout sessionId)

1067918

1068919--used in tests only

1069920transactionGraph_ :: Connection -> IO TransactionGraph

@@ -1148,15 +999,8 @@ commitLock_ sessionId conf stmBlock = do

1148999 Right (notsToFire, nodesToNotify, newGraph, transactionIdsToPersist) -> do

11491000 --update filesystem database, if necessary

11501001 processTransactionGraphPersistence strat transactionIdsToPersist newGraph

1151− sendNotifications nodesToNotify (ipLocalNode conf) notsToFire

1002+ sendNotifications nodesToNotify notsToFire

11521003 pure (Right ())

1153−{-

1154−writeDisconAndGraph_ :: TVar TransactionGraph -> SessionId -> Session -> Sessions -> DisconnectedTransaction -> TransactionGraph -> STM ()

1155−writeDisconAndGraph_ graphTvar sessionId session sessions discon graph = do

1156− writeTVar graphTvar graph

1157− let newSession = Session discon (Sess.schemaName session)

1158− StmMap.insert newSession sessionId sessions

1159−-}

11601004

11611005-- | Runs an IO monad, commits the result when the monad returns no errors, otherwise, rolls back the changes and the error.

11621006withTransaction :: SessionId -> Connection -> IO (Either RelationalError a) -> IO (Either RelationalError ()) -> IO (Either RelationalError a)

@@ -1208,7 +1052,7 @@ executeDataFrameExpr sessionId conn@(InProcessConnection _) dfExpr = do

12081052 let dFrame' = maybe dFrame (`DF.drop'` dFrame) (DF.offset dfExpr)

12091053 dFrame'' = maybe dFrame' (`DF.take'` dFrame') (DF.limit dfExpr)

12101054 pure (Right dFrame'')

1211−executeDataFrameExpr sessionId conn@(RemoteProcessConnection _) dfExpr = remoteCall conn (ExecuteDataFrameExpr sessionId dfExpr)

1055+executeDataFrameExpr sessionId conn@(RemoteConnection _) dfExpr = remoteCall conn (ExecuteDataFrameExpr sessionId dfExpr)

12121056

12131057validateMerkleHashes :: SessionId -> Connection -> IO (Either RelationalError ())

12141058validateMerkleHashes sessionId (InProcessConnection conf) = do

@@ -1222,4 +1066,30 @@ validateMerkleHashes sessionId (InProcessConnection conf) = do

12221066 case Graph.validateMerkleHashes graph of

12231067 Left merkleErrs -> pure $ Left $ someErrors (map (\(MerkleValidationError tid expected actual) -> MerkleHashValidationError tid expected actual) merkleErrs)

12241068 Right () -> pure (Right ())

1225−validateMerkleHashes sessionId conn@RemoteProcessConnection{} = remoteCall conn (ExecuteValidateMerkleHashes sessionId)

1069+validateMerkleHashes sessionId conn@RemoteConnection{} = remoteCall conn (ExecuteValidateMerkleHashes sessionId)

1070+

1071+type ClientNodes = StmSet.Set ClientInfo

1072+

1073+-- internal structure specific to in-process connections

1074+data InProcessConnectionConf = InProcessConnectionConf {

1075+ ipPersistenceStrategy :: PersistenceStrategy,

1076+ ipClientNodes :: ClientNodes,

1077+ ipSessions :: Sessions,

1078+ ipTransactionGraph :: TVar TransactionGraph,

1079+ ipScriptSession :: Maybe ScriptSession,

1080+ ipLocks :: Maybe (LockFile, MVar LockFileHash), -- nothing when NoPersistence

1081+ ipCallbackAsync :: Async ()

1082+ }

1083+

1084+-- clients may connect associate one socket/mvar with the server to register for change callbacks

1085+data ClientInfo = RemoteClientInfo (RPC.Locking Socket) |

1086+ InProcessClientInfo (MVar EvaluatedNotifications)

1087+

1088+instance Eq ClientInfo where

1089+ (RemoteClientInfo a) == (RemoteClientInfo b) = RPC.lockless a == RPC.lockless b

1090+ (InProcessClientInfo a) == (InProcessClientInfo b) = a == b

1091+ _ == _ = False

1092+

1093+instance Hashable ClientInfo where

1094+ hashWithSalt salt (RemoteClientInfo sock) = hashWithSalt salt (show (RPC.lockless sock))

1095+ hashWithSalt salt (InProcessClientInfo _) = hashWithSalt salt (1::Int)

src/lib/ProjectM36/DataFrame.hs+21−14

@@ -1,8 +1,8 @@

1−{-# LANGUAGE DeriveGeneric, DeriveAnyClass #-}

1+{-# LANGUAGE DeriveGeneric, DerivingVia #-}

22{- A dataframe is a strongly-typed, ordered list of named tuples. A dataframe differs from a relation in that its tuples are ordered.-}

33module ProjectM36.DataFrame where

44import ProjectM36.Base

5−import ProjectM36.Attribute as A

5+import ProjectM36.Attribute as A hiding (drop)

66import ProjectM36.Error

77import qualified ProjectM36.Relation as R

88import ProjectM36.Relation.Show.Term

@@ -16,15 +16,19 @@ import qualified Data.List as L

1616import qualified Data.Set as S

1717import Data.Maybe

1818import qualified Data.Text as T

19−import Data.Binary

2019import Control.Arrow

2120#if __GLASGOW_HASKELL__ < 804

2221import Data.Monoid

2322#endif

2423

25−data AttributeOrderExpr = AttributeOrderExpr AttributeName Order deriving (Show, Generic, Binary)

26−data AttributeOrder = AttributeOrder AttributeName Order deriving (Show, Generic, Binary)

27−data Order = AscendingOrder | DescendingOrder deriving (Eq, Show, Generic, Binary)

24+data AttributeOrderExpr = AttributeOrderExpr AttributeName Order

25+ deriving (Show, Generic)

26+

27+data AttributeOrder = AttributeOrder AttributeName Order

28+ deriving (Show, Generic)

29+

30+data Order = AscendingOrder | DescendingOrder

31+ deriving (Eq, Show, Generic)

2832

2933ascending :: T.Text

3034ascending = "⬆"

@@ -39,9 +43,11 @@ data DataFrame = DataFrame {

3943 orders :: [AttributeOrder],

4044 attributes :: Attributes,

4145 tuples :: [DataFrameTuple]

42− } deriving (Show, Generic, Binary)

46+ }

47+ deriving (Show, Generic)

4348

44−data DataFrameTuple = DataFrameTuple Attributes (V.Vector Atom) deriving (Eq, Show, Generic, Binary)

49+data DataFrameTuple = DataFrameTuple Attributes (V.Vector Atom)

50+ deriving (Eq, Show, Generic)

4551

4652sortDataFrameBy :: [AttributeOrder] -> DataFrame -> Either RelationalError DataFrame

4753sortDataFrameBy attrOrders frame = do

@@ -75,7 +81,7 @@ compareTupleByOneAttributeName attr tuple1 tuple2 =

7581 Right atom2 -> compareAtoms atom1 atom2

7682

7783atomForAttributeName :: AttributeName -> DataFrameTuple -> Either RelationalError Atom

78−atomForAttributeName attrName (DataFrameTuple tupAttrs tupVec) = case V.findIndex (\attr -> attributeName attr == attrName) tupAttrs of

84+atomForAttributeName attrName (DataFrameTuple tupAttrs tupVec) = case V.findIndex (\attr -> attributeName attr == attrName) (attributesVec tupAttrs) of

7985 Nothing -> Left (NoSuchAttributeNamesError (S.singleton attrName))

8086 Just index -> case tupVec V.!? index of

8187 Nothing -> Left (NoSuchAttributeNamesError (S.singleton attrName))

@@ -122,17 +128,18 @@ data DataFrameExpr = DataFrameExpr {

122128 orderExprs :: [AttributeOrderExpr],

123129 offset :: Maybe Integer,

124130 limit :: Maybe Integer

125− } deriving (Show, Binary, Generic)

131+ }

132+ deriving (Show, Generic)

126133

127134dataFrameAsHTML :: DataFrame -> T.Text

128135-- web browsers don't display tables with empty cells or empty headers, so we have to insert some placeholders- it's not technically the same, but looks as expected in the browser

129136dataFrameAsHTML df

130− | length (tuples df) == 1 && L.null (attributes df) = style <>

137+ | length (tuples df) == 1 && A.null (attributes df) = style <>

131138 tablestart <>

132139 "<tr><th></th></tr>" <>

133140 "<tr><td></td></tr>" <>

134141 tablefooter <> "</table>"

135− | L.null (tuples df) && L.null (attributes df) = style <>

142+ | L.null (tuples df) && A.null (attributes df) = style <>

136143 tablestart <>

137144 "<tr><th></th></tr>" <>

138145 tablefooter <>

@@ -155,7 +162,7 @@ tuplesAsHTML = foldr folder ""

155162 folder tuple acc = acc <> tupleAsHTML tuple

156163

157164tupleAssocs :: DataFrameTuple -> [(AttributeName, Atom)]

158−tupleAssocs (DataFrameTuple attrVec tupVec) = V.toList $ V.map (first attributeName) (V.zip attrVec tupVec)

165+tupleAssocs (DataFrameTuple attrs tupVec) = V.toList $ V.map (first attributeName) (V.zip (attributesVec attrs) tupVec)

159166

160167

161168tupleAsHTML :: DataFrameTuple -> T.Text

@@ -167,7 +174,7 @@ tupleAsHTML tuple = "<tr>" <> T.concat (L.map tupleFrag (tupleAssocs tuple)) <>

167174 atomAsHTML atom = atomToText atom

168175

169176attributesAsHTML :: Attributes -> [AttributeOrder] -> T.Text

170−attributesAsHTML attrs orders' = "<tr>" <> T.concat (map oneAttrHTML (V.toList attrs)) <> "</tr>"

177+attributesAsHTML attrs orders' = "<tr>" <> T.concat (map oneAttrHTML (A.toList attrs)) <> "</tr>"

171178 where

172179 oneAttrHTML attr = "<th>" <> prettyAttribute attr <> ordering (attributeName attr) <> "</th>"

173180 ordering attrName = " " <> case L.find (\(AttributeOrder nam _) -> nam == attrName) orders' of

src/lib/ProjectM36/DataTypes/Interval.hs+2

@@ -37,6 +37,7 @@ supportsInterval typ = case typ of

3737 BoolAtomType -> False

3838 RelationAtomType _ -> False

3939 ConstructedAtomType _ _ -> False --once we support an interval-style typeclass, we might enable this

40+ RelationalExprAtomType -> False

4041 TypeVariableType _ -> False

4142

4243supportsOrdering :: AtomType -> Bool

@@ -50,6 +51,7 @@ supportsOrdering typ = case typ of

5051 ByteStringAtomType -> False

5152 BoolAtomType -> False

5253 RelationAtomType _ -> False

54+ RelationalExprAtomType -> False

5355 ConstructedAtomType _ _ -> False --once we support an interval-style typeclass, we might enable this

5456 TypeVariableType _ -> False

5557

src/lib/ProjectM36/DataTypes/Primitive.hs+1

@@ -42,3 +42,4 @@ atomTypeForAtom (ByteStringAtom _) = ByteStringAtomType

4242atomTypeForAtom (BoolAtom _) = BoolAtomType

4343atomTypeForAtom (RelationAtom (Relation attrs _)) = RelationAtomType attrs

4444atomTypeForAtom (ConstructedAtom _ aType _) = aType

45+atomTypeForAtom (RelationalExprAtom _) = RelationalExprAtomType

src/lib/ProjectM36/DataTypes/Sorting.hs+1

@@ -24,6 +24,7 @@ isSortableAtomType typ = case typ of

2424 DateTimeAtomType -> True

2525 ByteStringAtomType -> False

2626 BoolAtomType -> True

27+ RelationalExprAtomType -> False

2728 RelationAtomType _ -> False

2829 ConstructedAtomType _ _ -> False

2930 TypeVariableType _ -> False

src/lib/ProjectM36/DatabaseContext.hs+6−6

@@ -7,9 +7,9 @@ import ProjectM36.DataTypes.Basic

77import ProjectM36.AtomFunctions.Basic

88import ProjectM36.Relation

99import qualified Data.ByteString.Lazy as BL

10−import Data.Binary as B

1110import ProjectM36.AtomFunction as AF

1211import ProjectM36.DatabaseContextFunction as DBCF

12+import Codec.Winery

1313

1414empty :: DatabaseContext

1515empty = DatabaseContext { inclusionDependencies = M.empty,

@@ -44,11 +44,11 @@ basicDatabaseContext = DatabaseContext { inclusionDependencies = M.empty,

4444

4545--for building the Merkle hash

4646hashBytes :: DatabaseContext -> BL.ByteString

47−hashBytes ctx = mconcat [incDeps, rvs, atomFs, dbcFs, nots, tConsMap]

47+hashBytes ctx = BL.fromChunks [incDeps, rvs, nots, tConsMap] <> atomFs <> dbcFs

4848 where

49− incDeps = B.encode (inclusionDependencies ctx)

50− rvs = B.encode (relationVariables ctx)

49+ incDeps = serialise (inclusionDependencies ctx)

50+ rvs = serialise (relationVariables ctx)

5151 atomFs = HS.foldr (mappend . AF.hashBytes) mempty (atomFunctions ctx)

5252 dbcFs = HS.foldr (mappend . DBCF.hashBytes) mempty (dbcFunctions ctx)

53− nots = B.encode (notifications ctx)

54− tConsMap = B.encode (typeConstructorMapping ctx)

53+ nots = serialise (notifications ctx)

54+ tConsMap = serialise (typeConstructorMapping ctx)

src/lib/ProjectM36/DatabaseContextFunction.hs+6−5

@@ -3,6 +3,7 @@ module ProjectM36.DatabaseContextFunction where

33--implements functions which operate as: [Atom] -> DatabaseContextExpr -> Either RelationalError DatabaseContextExpr

44import ProjectM36.Base

55import ProjectM36.Error

6+import ProjectM36.Serialise.Base ()

67import ProjectM36.Attribute as A

78import ProjectM36.Relation

89import ProjectM36.AtomType

@@ -11,7 +12,7 @@ import qualified Data.Map as M

1112import ProjectM36.ScriptSession

1213import qualified Data.Text as T

1314import qualified Data.ByteString.Lazy as BL

14−import Data.Binary as B

15+import Codec.Winery

1516

1617emptyDatabaseContextFunction :: DatabaseContextFunctionName -> DatabaseContextFunction

1718emptyDatabaseContextFunction name = DatabaseContextFunction {

@@ -82,9 +83,9 @@ databaseContextFunctionsAsRelation dbcFuncs = mkRelationFromList attrs tups

8283

8384-- for merkle hash

8485hashBytes :: DatabaseContextFunction -> BL.ByteString

85−hashBytes func = mconcat [fname, ftype, fbody]

86+hashBytes func = BL.fromChunks [fname, ftype, fbody]

8687 where

87− fname = B.encode (dbcFuncName func)

88− ftype = B.encode (dbcFuncType func)

88+ fname = serialise (dbcFuncName func)

89+ ftype = serialise (dbcFuncType func)

8990 fbody = case dbcFuncBody func of

90− DatabaseContextFunctionBody mBody _ -> B.encode mBody

91+ DatabaseContextFunctionBody mBody _ -> serialise mBody

src/lib/ProjectM36/DatabaseContextFunctionError.hs+1−2

@@ -1,9 +1,8 @@

11{-# LANGUAGE DeriveGeneric, DeriveAnyClass #-}

22module ProjectM36.DatabaseContextFunctionError where

33import GHC.Generics

4−import Data.Binary

54import Control.DeepSeq

76{-# ANN module ("HLint: ignore Use newtype instead of data" :: String) #-}

87data DatabaseContextFunctionError = DatabaseContextFunctionUserError String

9− deriving (Generic, Eq, Show, Binary, NFData)

8+ deriving (Generic, Eq, Show, NFData)

src/lib/ProjectM36/Error.hs+16−14

@@ -9,7 +9,6 @@ import Control.DeepSeq (NFData, rnf)

99import Control.DeepSeq.Generics (genericRnf)

1010import GHC.Generics (Generic)

1111import qualified Data.Text as T

12−import Data.Binary

1312import Data.Typeable

1413import Control.Exception

1514

@@ -82,7 +81,7 @@ data RelationalError = NoSuchAttributeNamesError (S.Set AttributeName)

8281 | RelationValuedAttributesNotSupportedError [AttributeName]

8382 | NotificationNameInUseError NotificationName

8483 | NotificationNameNotInUseError NotificationName

85− | ImportError T.Text -- really? This should be broken out into some other error type- this has nothing to do with relational algebra

84+ | ImportError ImportError'

8685 | ExportError T.Text

8786 | UnhandledExceptionError String

8887 | MergeTransactionError MergeError

@@ -104,14 +103,14 @@ data RelationalError = NoSuchAttributeNamesError (S.Set AttributeName)

104103 | TupleExprsReferenceMultipleMarkersError

105104

106105 | MerkleHashValidationError TransactionId MerkleHash MerkleHash

107−

106+

108107 | MultipleErrors [RelationalError]

109− deriving (Show,Eq,Generic,Binary,Typeable, NFData)

108+ deriving (Show,Eq,Generic,Typeable, NFData)

110109

111110data PersistenceError = InvalidDirectoryError FilePath |

112111 MissingTransactionError TransactionId |

113112 WrongDatabaseFormatVersionError String String

114− deriving (Show, Eq, Generic, Binary, NFData)

113+ deriving (Show, Eq, Generic, NFData)

115114

116115--collapse list of errors into normal error- if there is just one, just return one

117116someErrors :: [RelationalError] -> RelationalError

@@ -129,7 +128,7 @@ data MergeError = SelectedHeadMismatchMergeError |

129128 StrategyViolatesComponentMergeError | --failed merge in inc deps, relvars, etc.

130129 StrategyViolatesRelationVariableMergeError |

131130 StrategyViolatesTypeConstructorMergeError

132− deriving (Show, Eq, Generic, Binary, Typeable)

131+ deriving (Show, Eq, Generic, Typeable)

133132

134133instance NFData MergeError where rnf = genericRnf

135134

@@ -137,17 +136,20 @@ data ScriptCompilationError = TypeCheckCompilationError String String | --expect

137136 SyntaxErrorCompilationError String |

138137 ScriptCompilationDisabledError |

139138 OtherScriptCompilationError String

140− deriving (Show, Eq, Generic, Binary, Typeable, NFData)

139+ deriving (Show, Eq, Generic, Typeable, NFData)

141140

142141instance Exception ScriptCompilationError

143142

144143data SchemaError = RelVarReferencesMissing (S.Set RelVarName) |

145144 RelVarInReferencedMoreThanOnce RelVarName |

146145 RelVarOutReferencedMoreThanOnce RelVarName

147− deriving (Show, Eq, Generic, Binary, Typeable, NFData)

148−

149−

150−-- errors returned from the distributed-process call handlers

151−data ServerError = RequestTimeoutError |

152− ProcessDiedError String

153− deriving (Generic, Binary, Eq)

146+ deriving (Show, Eq, Generic, Typeable, NFData)

147+

148+

149+data ImportError' = InvalidSHA256Error T.Text

150+ | SHA256MismatchError T.Text T.Text

151+ | InvalidFileURIError T.Text

152+ | ImportFileDecodeError T.Text

153+ | ImportFileError T.Text

154+ | ImportDownloadError T.Text

155+ deriving (Show, Eq, Generic, Typeable, NFData)

src/lib/ProjectM36/InclusionDependency.hs+5−6

@@ -4,17 +4,16 @@ import ProjectM36.Attribute

44import ProjectM36.Error

55import ProjectM36.Relation

66import qualified Data.Map as M

7−import qualified Data.Text as T

98inclusionDependenciesAsRelation :: InclusionDependencies -> Either RelationalError Relation

109inclusionDependenciesAsRelation incDeps =

1110 mkRelationFromList attrs (map incDepAsAtoms (M.toList incDeps))

1211 where

1312 attrs = attributesFromList [Attribute "name" TextAtomType,

14− Attribute "sub" TextAtomType,

15− Attribute "super" TextAtomType

13+ Attribute "sub" RelationalExprAtomType,

14+ Attribute "super" RelationalExprAtomType

1615 ]

1716 incDepAsAtoms (name, InclusionDependency exprA exprB) = [TextAtom name,

18− TextAtom (T.pack (show exprA)),

19− TextAtom (T.pack (show exprB))]

20−

17+ RelationalExprAtom exprA,

18+ RelationalExprAtom exprB]

19+

src/lib/ProjectM36/IsomorphicSchema.hs+2−4

@@ -1,4 +1,4 @@

1−{-# LANGUAGE DeriveGeneric, DeriveAnyClass, LambdaCase #-}

1+{-# LANGUAGE DeriveGeneric, LambdaCase, DerivingVia #-}

22module ProjectM36.IsomorphicSchema where

33import ProjectM36.Base

44import ProjectM36.Error

@@ -9,7 +9,6 @@ import ProjectM36.RelationalExpression

99import qualified ProjectM36.AttributeNames as AN

1010import Control.Monad

1111import GHC.Generics

12−import Data.Binary

1312import qualified Data.Map as M

1413import qualified Data.Set as S

1514import qualified Data.List as L

@@ -28,8 +27,7 @@ import Data.Monoid

2827

2928data SchemaExpr = AddSubschema SchemaName SchemaIsomorphs |

3029 RemoveSubschema SchemaName

31− deriving (Generic, Binary, Show)

32−

30+ deriving (Generic, Show)

3331

3432isomorphs :: Schema -> SchemaIsomorphs

3533isomorphs (Schema i) = i

src/lib/ProjectM36/MerkleHash.hs+2−3

@@ -1,10 +1,9 @@

1−{-# LANGUAGE GeneralizedNewtypeDeriving, DeriveGeneric #-}

1+{-# LANGUAGE GeneralizedNewtypeDeriving, DeriveGeneric, DerivingVia #-}

22module ProjectM36.MerkleHash where

33import Data.ByteString (ByteString)

44import GHC.Generics

5−import Data.Binary (Binary)

65import Control.DeepSeq (NFData)

87newtype MerkleHash = MerkleHash { _unMerkleHash :: ByteString }

9− deriving (Show, Eq, Binary, Generic, Monoid, Semigroup, NFData)

8+ deriving (Show, Eq, Generic, Monoid, Semigroup, NFData)

109

src/lib/ProjectM36/Persist.hs+3−4

@@ -36,7 +36,6 @@ import Foreign.C

3636#endif

3737

3838import System.IO (withFile, IOMode(WriteMode), Handle)

39−import qualified Data.ByteString.Lazy as BS

4039import qualified Data.ByteString as BS'

4140import qualified Data.Text.Encoding as TE

4241

@@ -100,10 +99,10 @@ syncDirectory :: DiskSync -> FilePath -> IO ()

10099syncDirectory FsyncDiskSync path = directoryFsync path

101100syncDirectory NoDiskSync _ = pure ()

102101

103−writeBSFileSync :: DiskSync -> FilePath -> BS.ByteString -> IO ()

102+writeBSFileSync :: DiskSync -> FilePath -> BS'.ByteString -> IO ()

104103writeBSFileSync sync path bstring =

105104 withFile path WriteMode $ \handle -> do

106− BS.hPut handle bstring

105+ BS'.hPut handle bstring

107106 syncHandle sync handle

108107

109108directoryFsync :: FilePath -> IO ()

@@ -131,4 +130,4 @@ fdCount = do

131130 fds <- getDirectoryContents FDDIR

132131 pure ((length fds) - 2)

133132--not supported on non-linux

134−#endif

133+#endif

src/lib/ProjectM36/Relation.hs+17−22

@@ -9,7 +9,6 @@ import ProjectM36.Tuple

99import qualified ProjectM36.Attribute as A

1010import ProjectM36.TupleSet

1111import ProjectM36.Error

12−import ProjectM36.MiscUtils

1312--import qualified Control.Parallel.Strategies as P

1413import qualified ProjectM36.TypeConstructorDef as TCD

1514import qualified ProjectM36.DataConstructorDef as DCD

@@ -17,7 +16,6 @@ import qualified Data.Text as T

1716import Data.Either (isRight)

1817import System.Random.Shuffle

1918import Control.Monad.Random

20−import Data.List (sort)

2119

2220attributes :: Relation -> Attributes

2321attributes (Relation attrs _ ) = attrs

@@ -35,7 +33,7 @@ atomTypeForName :: AttributeName -> Relation -> Either RelationalError AtomType

3533atomTypeForName attrName (Relation attrs _) = A.atomTypeForAttributeName attrName attrs

3634

3735mkRelationFromList :: Attributes -> [[Atom]] -> Either RelationalError Relation

38−mkRelationFromList attrs atomMatrix =

36+mkRelationFromList attrs atomMatrix = do

3937 Relation attrs <$> mkTupleSetFromList attrs atomMatrix

4038

4139emptyRelationWithAttrs :: Attributes -> Relation

@@ -43,11 +41,6 @@ emptyRelationWithAttrs attrs = Relation attrs emptyTupleSet

4341

4442mkRelation :: Attributes -> RelationTupleSet -> Either RelationalError Relation

4543mkRelation attrs tupleSet =

46− --check that all attributes are unique- this cannot be done when creating attributes because the check can become expensive

47− let duplicateAttrNames = dupes (sort (map A.attributeName (V.toList attrs))) in

48− if not (null duplicateAttrNames) then

49− Left (DuplicateAttributeNamesError (S.fromList duplicateAttrNames))

50− else

5144 --check that all tuples have the same keys

5245 --check that all tuples have keys (1-N) where N is the attribute count

5346 case verifyTupleSet attrs tupleSet of

@@ -93,13 +86,12 @@ union (Relation attrs1 tupSet1) (Relation attrs2 tupSet2) =

9386 else

9487 Right $ Relation attrs1 newtuples

9588 where

96− newtuples = RelationTupleSet $ HS.toList . HS.fromList $ asList tupSet1 ++ map (reorderTuple attrs1) (asList tupSet2)

97−

89+ newtuples = tupleSetUnion attrs1 tupSet1 tupSet2

90+

9891project :: S.Set AttributeName -> Relation -> Either RelationalError Relation

9992project attrNames rel@(Relation _ tupSet) = do

10093 newAttrs <- A.projectionAttributesForNames attrNames (attributes rel)

101− let newAttrNameSet = A.attributeNameSet newAttrs

102− newTupleList = map (tupleProject newAttrNameSet) (asList tupSet)

94+ newTupleList <- mapM (tupleProject newAttrs) (asList tupSet)

10395 pure (Relation newAttrs (RelationTupleSet (HS.toList (HS.fromList newTupleList))))

10496

10597rename :: AttributeName -> AttributeName -> Relation -> Either RelationalError Relation

@@ -154,7 +146,7 @@ group groupAttrNames newAttrName rel = do

154146 groupProjectionAttributes <- A.projectionAttributesForNames groupAttrNames (attributes rel)

155147 let groupAttr = Attribute newAttrName (RelationAtomType groupProjectionAttributes)

156148 matchingRelTuple tupIn = case imageRelationFor tupIn rel of

157− Right rel2 -> RelationTuple (V.singleton groupAttr) (V.singleton (RelationAtom rel2))

149+ Right rel2 -> RelationTuple (A.singleton groupAttr) (V.singleton (RelationAtom rel2))

158150 Left _ -> undefined

159151 mogrifier tupIn = pure (tupleExtend tupIn (matchingRelTuple tupIn))

160152 newAttrs = A.addAttribute groupAttr nonGroupProjectionAttributes

@@ -168,7 +160,8 @@ restrictEq :: RelationTuple -> Relation -> Either RelationalError Relation

168160restrictEq tuple = restrict rfilter

169161 where

170162 rfilter :: RelationTuple -> Either RelationalError Bool

171− rfilter tupleIn = pure (tupleIntersection tuple tupleIn == tuple)

163+ rfilter tupleIn = do

164+ pure (tupleIntersection tuple tupleIn == tuple)

172165

173166-- unwrap relation-valued attribute

174167-- return error if relval attrs and nongroup attrs overlap

@@ -190,13 +183,13 @@ ungroup relvalAttrName rel = case attributesForRelval relvalAttrName rel of

190183tupleUngroup :: AttributeName -> Attributes -> RelationTuple -> Either RelationalError Relation

191184tupleUngroup relvalAttrName newAttrs tuple = do

192185 relvalRelation <- relationForAttributeName relvalAttrName tuple

186+ let nonGroupAttrs = A.intersection newAttrs (tupleAttributes tuple)

187+ nonGroupTupleProjection <- tupleProject nonGroupAttrs tuple

188+ let folder tupleIn acc = case acc of

189+ Left err -> Left err

190+ Right accRel ->

191+ union accRel $ Relation newAttrs (RelationTupleSet [tupleExtend nonGroupTupleProjection tupleIn])

193192 relFold folder (Right $ Relation newAttrs emptyTupleSet) relvalRelation

194− where

195− nonGroupTupleProjection = tupleProject nonGroupAttrNames tuple

196− nonGroupAttrNames = A.attributeNameSet newAttrs

197− folder tupleIn acc = case acc of

198− Left err -> Left err

199− Right accRel -> union accRel $ Relation newAttrs (RelationTupleSet [tupleExtend nonGroupTupleProjection tupleIn])

200193

201194attributesForRelval :: AttributeName -> Relation -> Either RelationalError Attributes

202195attributesForRelval relvalAttrName (Relation attrs _) = do

@@ -251,7 +244,8 @@ relMap mapper (Relation attrs tupleSet) =

251244

252245relMogrify :: (RelationTuple -> Either RelationalError RelationTuple) -> Attributes -> Relation -> Either RelationalError Relation

253246relMogrify mapper newAttributes (Relation _ tupSet) = do

254− newTuples <- mapM mapper (asList tupSet)

247+ newTuples <- mapM (fmap (reorderTuple newAttributes) . mapper) (asList tupSet)

248+

255249 mkRelationFromTuples newAttributes newTuples

256250

257251relFold :: (RelationTuple -> a -> a) -> a -> Relation -> a

@@ -297,7 +291,8 @@ typesAsRelation types = mkRelationFromTuples attrs tuples

297291 dConsType = RelationAtomType subAttrs

298292 tuples = map mkTypeConsDescription types

299293

300− mkTypeConsDescription (tCons, dConsList) = RelationTuple attrs (V.fromList [TextAtom (TCD.name tCons), mkDataConsRelation dConsList])

294+ mkTypeConsDescription (tCons, dConsList) =

295+ RelationTuple attrs (V.fromList [TextAtom (TCD.name tCons), mkDataConsRelation dConsList])

301296

302297 mkDataConsRelation dConsList = case mkRelationFromTuples subAttrs $ map (\dCons -> RelationTuple subAttrs (V.singleton $ TextAtom $ T.intercalate " " (DCD.name dCons:map (T.pack . show) (DCD.fields dCons)))) dConsList of

303298 Left err -> error ("mkRelationFromTuples pooped " ++ show err)

src/lib/ProjectM36/Relation/Parse/CSV.hs+7−3

@@ -38,8 +38,7 @@ csvAsRelation attrs tConsMap inString = case APBL.parse (csvWithHeader csvDecode

3838 let strHeader = V.map decodeUtf8 headerRaw

3939 strMapRecords = V.map convertMap vecMapsRaw

4040 convertMap hmap = HM.fromList $ L.map (decodeUtf8 *** (T.unpack . decodeUtf8)) (HM.toList hmap)

41− attrNames = V.map A.attributeName attrs

42− attrNameSet = S.fromList (V.toList attrNames)

41+ attrNameSet = A.attributeNameSet attrs

4342 headerSet = S.fromList (V.toList strHeader)

4443 parseAtom attrName aType textIn = case APT.parseOnly (parseCSVAtomP attrName tConsMap aType <* APT.endOfInput) textIn of

4544 Left err -> Left (ParseError (T.pack err))

@@ -47,7 +46,7 @@ csvAsRelation attrs tConsMap inString = case APBL.parse (csvWithHeader csvDecode

4746 makeTupleList :: HM.HashMap AttributeName String -> [Either CsvImportError Atom]

4847 makeTupleList tupMap = V.toList $ V.map (\attr ->

4948 either (Left . AttributeMappingError) Right $

50− parseAtom (A.attributeName attr) (A.atomType attr) (T.pack $ tupMap HM.! A.attributeName attr)) attrs

49+ parseAtom (A.attributeName attr) (A.atomType attr) (T.pack $ tupMap HM.! A.attributeName attr)) (attributesVec attrs)

5150 if attrNameSet == headerSet then do

5251 tupleList <- mapM sequence $ V.toList (V.map makeTupleList strMapRecords)

5352 case mkRelationFromList attrs tupleList of

@@ -83,6 +82,11 @@ parseCSVAtomP _ _ BoolAtomType = do

8382 case readMaybe bString of

8483 Nothing -> fail ("invalid BoolAtom string: " ++ bString)

8584 Just b -> pure (Right (BoolAtom b))

85+parseCSVAtomP _ _ RelationalExprAtomType = do

86+ reString <- T.unpack <$> takeToEndOfData

87+ case readMaybe reString of

88+ Nothing -> fail ("invalid RelationalExprAtom string: " ++ reString)

89+ Just b -> pure (Right (RelationalExprAtom b))

8690parseCSVAtomP attrName tConsMap typ@(ConstructedAtomType _ tvmap)

8791 | isIntervalAtomType typ = do

8892 begin <- (APT.char '[' >> pure False) <|> (APT.char '(' >> pure True)

src/lib/ProjectM36/Relation/Show/CSV.hs+5−5

@@ -1,7 +1,7 @@

11{-# OPTIONS_GHC -fno-warn-orphans #-}

22module ProjectM36.Relation.Show.CSV where

33import ProjectM36.Base

4−import ProjectM36.Attribute

4+import ProjectM36.Attribute as A

55import Data.Csv

66import ProjectM36.Tuple

77import qualified Data.ByteString.Lazy as BS

@@ -17,13 +17,13 @@ relationAsCSV (Relation attrs tupleSet)

1717 | relValAttrs /= [] =

1818 Left $ RelationValuedAttributesNotSupportedError (map attributeName relValAttrs)

1919 --check that there is at least one attribute

20− | V.null attrs =

20+ | A.null attrs =

2121 Left $ TupleAttributeCountMismatchError 0

2222 | otherwise =

2323 Right $ encodeByName bsAttrNames $ map RecordRelationTuple (asList tupleSet)

2424 where

25− relValAttrs = V.toList $ V.filter (isRelationAtomType . atomType) attrs

26− bsAttrNames = V.map (TE.encodeUtf8 . attributeName) attrs

25+ relValAttrs = V.toList $ V.filter (isRelationAtomType . atomType) (attributesVec attrs)

26+ bsAttrNames = V.map (TE.encodeUtf8 . attributeName) (attributesVec attrs)

2727

2828{-

2929instance ToRecord RelationTuple where

@@ -36,7 +36,7 @@ instance ToNamedRecord RecordRelationTuple where

3636 toNamedRecord rTuple = namedRecord $ map (\(k,v) -> TE.encodeUtf8 k .= RecordAtom v) (tupleAssocs $ unTuple rTuple)

3737

3838instance DefaultOrdered RecordRelationTuple where

39− headerOrder (RecordRelationTuple tuple) = V.map (TE.encodeUtf8 . attributeName) (tupleAttributes tuple)

39+ headerOrder (RecordRelationTuple tuple) = V.map (TE.encodeUtf8 . attributeName) (attributesVec (tupleAttributes tuple))

4040

4141newtype RecordAtom = RecordAtom {unAtom :: Atom}

4242

src/lib/ProjectM36/Relation/Show/HTML.hs+2−2

@@ -3,6 +3,7 @@ import ProjectM36.Base

33import ProjectM36.Relation

44import ProjectM36.Tuple

55import ProjectM36.Atom

6+import ProjectM36.Attribute as A

67import ProjectM36.AtomType

78import qualified Data.List as L

89import Data.Text (Text, pack)

@@ -11,10 +12,9 @@ import qualified Data.Text.IO as TIO

1112#if __GLASGOW_HASKELL__ < 804

1213import Data.Monoid

1314#endif

14−import qualified Data.Vector as V

1515

1616attributesAsHTML :: Attributes -> Text

17−attributesAsHTML attrs = "<tr>" <> T.concat (map oneAttrHTML (V.toList attrs)) <> "</tr>"

17+attributesAsHTML attrs = "<tr>" <> T.concat (map oneAttrHTML (A.toList attrs)) <> "</tr>"

1818 where

1919 oneAttrHTML attr = "<th>" <> prettyAttribute attr <> "</th>"

2020

src/lib/ProjectM36/RelationalExpression.hs+169−310

@@ -1,6 +1,7 @@

11{-# LANGUAGE ScopedTypeVariables #-}

22{-# LANGUAGE FlexibleInstances #-}

33{-# LANGUAGE FlexibleContexts #-}

4+{-# LANGUAGE OverloadedStrings #-}

45module ProjectM36.RelationalExpression where

56import ProjectM36.Relation

67import ProjectM36.Tuple

@@ -40,6 +41,8 @@ import Control.Monad.Reader as R hiding (join)

4041import ProjectM36.NormalizeExpr

4142import ProjectM36.WithNameExpr

4243import Test.QuickCheck

44+import qualified Data.Functor.Foldable as Fold

45+import Control.Applicative

4346#ifdef PM36_HASKELL_SCRIPTING

4447import GHC hiding (getContext)

4548import Control.Exception

@@ -107,11 +110,11 @@ askEnv :: GraphRefRelationalExprM GraphRefRelationalExprEnv

107110askEnv = R.ask

108111

109112mergeTuplesIntoGraphRefRelationalExprEnv :: RelationTuple -> GraphRefRelationalExprEnv -> GraphRefRelationalExprEnv

110−mergeTuplesIntoGraphRefRelationalExprEnv tupIn e =

111− e{ gre_extra = new_elems }

113+mergeTuplesIntoGraphRefRelationalExprEnv tupIn env =

114+ env { gre_extra = new_elems }

112115 where

113116 new_elems = Just (Left newTuple)

114− mergedTupMap = M.union (tupleToMap tupIn) (tupleToMap (envTuple e))

117+ mergedTupMap = M.union (tupleToMap tupIn) (tupleToMap (envTuple env))

115118 newTuple = mkRelationTupleFromMap mergedTupMap

116119

117120mergeAttributesIntoGraphRefRelationalExprEnv :: Attributes -> GraphRefRelationalExprEnv -> GraphRefRelationalExprEnv

@@ -209,166 +212,13 @@ envContext = re_context

209212setEnvContext :: RelationalExprEnv -> DatabaseContext -> RelationalExprEnv

210213setEnvContext e ctx = e { re_context = ctx }

211214

212−{-

213−--full evaluation down the graph

214−eval :: RelationalExpr -> RelationalExprState (Either RelationalError Relation)

215−eval expr = do

216− env <- askEnv

217− eGfExpr <- processRelationalExpr expr

218− case eGfExpr of

219− Left err -> pure (Left err)

220− Right gfExpr -> pure $ evalGraphRefRelationalExpr gfExpr (re_graph env)

221−-}

222−{-

223−--relvar state is needed in evaluation of relational expression but only as read-only in order to extract current relvar values

224−evalRelationalExpr :: RelationalExpr -> RelationalExprState (Either RelationalError GraphRefRelationalExpr)

225−evalRelationalExpr (RelationVariable name _) = do

226− relvarTable <- fmap (relationVariables . envContext) askEnv

227− return $ case M.lookup name relvarTable of

228− Just res -> Right res

229− Nothing -> Left $ RelVarNotDefinedError name

230−

231−evalRelationalExpr (Project attrNames expr) = do

232− eAttrNameSet <- evalAttributeNames attrNames expr

233− case eAttrNameSet of

234− Left err -> pure (Left err)

235− Right attrNameSet -> do

236− rel <- evalRelationalExpr expr

237− case rel of

238− Right rel2 -> pure $ Right (Project (AttributeNames attrNameSet) rel2)

239− Left err -> pure $ Left err

240−

241−evalRelationalExpr (Union exprA exprB) = do

242− relA <- evalRelationalExpr exprA

243− relB <- evalRelationalExpr exprB

244− case relA of

245− Left err -> return $ Left err

246− Right relA2 -> case relB of

247− Left err -> return $ Left err

248− Right relB2 -> return $ Right (Union relA2 relB2)

249−

250−evalRelationalExpr (Join exprA exprB) = do

251− relA <- evalRelationalExpr exprA

252− relB <- evalRelationalExpr exprB

253− case relA of

254− Left err -> return $ Left err

255− Right relA2 -> case relB of

256− Left err -> return $ Left err

257− Right relB2 -> return $ Right (Join relA2 relB2)

258−

259−evalRelationalExpr (Difference exprA exprB) = do

260− relA <- evalRelationalExpr exprA

261− relB <- evalRelationalExpr exprB

262− case relA of

263− Left err -> return $ Left err

264− Right relA2 -> case relB of

265− Left err -> return $ Left err

266− Right relB2 -> return $ Right (Difference relA2 relB2)

267−

268−evalRelationalExpr (MakeStaticRelation attributeSet tupleSet) =

269− case mkRelation attributeSet tupleSet of

270− Right rel -> return $ Right (ExistingRelation rel)

271− Left err -> return $ Left err

272−

273−evalRelationalExpr (MakeRelationFromExprs mAttrExprs tupleExprs) = do

274− currentContext <- fmap envContext askEnv

275− let tConss = typeConstructorMapping currentContext

276− -- if the mAttrExprs is Nothing, then we should attempt to infer the tuple attributes from the first tuple itself- note that this is not always possible

277− runExceptT $ do

278− mAttrs <- case mAttrExprs of

279− Just _ ->

280− Just . A.attributesFromList <$> mapM evalGraphRefAttrExpr (fromMaybe [] mAttrExprs)

281− Nothing -> pure Nothing

282− tuples <- mapM (liftE . evalTupleExpr mAttrs) tupleExprs

283− let attrs = fromMaybe firstTupleAttrs mAttrs

284− firstTupleAttrs = if null tuples then A.emptyAttributes else tupleAttributes (head tuples)

285− expr <- either throwE pure (mkRelation attrs (RelationTupleSet tuples))

286− pure (ExistingRelation expr)

287−

288−evalRelationalExpr (ExistingRelation rel) = pure (Right (ExistingRelation rel))

289−

290−evalRelationalExpr (Rename oldAttrName newAttrName relExpr) = do

291− evald <- evalRelationalExpr relExpr

292− case evald of

293− Right expr -> return $ Right (Rename oldAttrName newAttrName expr)

294− Left err -> return $ Left err

295−

296−evalRelationalExpr (Group oldAttrNames newAttrName relExpr) = do

297− eOldAttrNameSet <- evalAttributeNames oldAttrNames relExpr

298− case eOldAttrNameSet of

299− Left err -> pure (Left err)

300− Right oldAttrNameSet -> do

301− evald <- evalRelationalExpr relExpr

302− case evald of

303− Right expr -> return $ Right (Group (AttributeNames oldAttrNameSet) newAttrName expr)

304− Left err -> return $ Left err

305−

306−evalRelationalExpr (Ungroup attrName relExpr) = do

307− evald <- evalRelationalExpr relExpr

308− case evald of

309− Right expr -> return $ Right (Ungroup attrName expr)

310− Left err -> return $ Left err

311−

312−evalRelationalExpr (Restrict predicateExpr relExpr) = do

313− evald <- evalRelationalExpr relExpr

314− pred <- processRestrictionPredicateExpr predicateExpr

315− case evald of

316− Left err -> return $ Left err

317− Right expr ->

318− pure $ Right (Restrict pred expr)

319−

320−evalRelationalExpr (Equals relExprA relExprB) = do

321− evaldA <- evalRelationalExpr relExprA

322− evaldB <- evalRelationalExpr relExprB

323− case evaldA of

324− Left err -> return $ Left err

325− Right exprA -> case evaldB of

326− Left err -> return $ Left err

327− Right exprB -> return $ Right (Equals exprA exprB)

328−{-

329−evalRelationalExpr (With views mainExpr) = do

330− rstate <- ask

331−

332− let addScopedView ctx (vname,vexpr) = if vname `M.member` relationVariables ctx then

333− Left (RelVarAlreadyDefinedError vname)

334− else

335− case runState (evalDatabaseContextExpr (Assign vname vexpr)) (freshDatabaseState ctx) of

336− (Left err,_) -> Left err

337− (Right (), (ctx',_,_)) -> Right ctx'

338−

339− case foldM addScopedView (stateElemsContext rstate) views of

340− Left err -> return $ Left err

341− Right ctx'' -> do

342− let evalMainExpr expr = runReader (evalRelationalExpr expr) (RelationalExprEnv ctx'')

343− case evalMainExpr mainExpr of

344− Left err -> return $ Left err

345− Right rel -> return $ Right rel

346−-}

347−--warning: copy-pasta from above- refactor

348−evalRelationalExpr (NotEquals relExprA relExprB) = do

349− evaldA <- evalRelationalExpr relExprA

350− evaldB <- evalRelationalExpr relExprB

351− case evaldA of

352− Left err -> return $ Left err

353− Right exprA -> case evaldB of

354− Left err -> return $ Left err

355− Right exprB -> return $ Right (NotEquals exprA exprB)

356−

357−-- extending a relation adds a single attribute with the results of the per-tuple expression evaluated

358−evalRelationalExpr (Extend tupleExpression relExpr) = do

359− eExpr <- evalRelationalExpr relExpr

360− case eExpr of

361− Left err -> pure (Left err)

362− Right expr -> do

363− tupProc <- processExtendTupleExpr tupleExpression

364− pure (Right (Extend tupProc expr))

365−-}

366215--helper function to process relation variable creation/assignment

367216setRelVar :: RelVarName -> GraphRefRelationalExpr -> DatabaseContextEvalMonad ()

368217setRelVar relVarName relExpr = do

369218 currentContext <- getStateContext

370− --prevent recursive relvar definition

371− let newRelVars = M.insert relVarName relExpr $ relationVariables currentContext

219+ --prevent recursive relvar definition by resolving references to relvars in previous states

220+ relExpr' <- resolve relExpr

221+ let newRelVars = M.insert relVarName relExpr' $ relationVariables currentContext

372222 potentialContext = currentContext { relationVariables = newRelVars }

373223 --optimization: if the relexpr is unchanged, skip the update

374224 if M.lookup relVarName (relationVariables currentContext) == Just relExpr then

@@ -381,6 +231,9 @@ setRelVar relVarName relExpr = do

381231 Left err -> dbErr err

382232 Right _ -> putStateContext potentialContext

383233

234+--fast-path insertion- we already know that the previous relvar validated correctly, so we can validate just the relation that is being inserted for attribute matches- without this, even a single tuple relation inserted causes the entire relation to be re-validated unnecessarily

235+--insertIntoRelVar :: RelVarName -> GraphRefRelationalExpr -> DatabaseContextEvalMonad ()

236+

384237-- it is not an error to delete a relvar which does not exist, just like it is not an error to insert a pre-existing tuple into a relation

385238deleteRelVar :: RelVarName -> DatabaseContextEvalMonad ()

386239deleteRelVar relVarName = do

@@ -446,20 +299,36 @@ evalGraphRefDatabaseContextExpr (Assign relVarName expr) = do

446299

447300evalGraphRefDatabaseContextExpr (Insert relVarName relExpr) = do

448301 gfExpr <- relVarByName relVarName

449− evalGraphRefDatabaseContextExpr (Assign relVarName

450− (Union

451− gfExpr

452− relExpr))

302+ let optExpr = applyUnionCollapse (Union

303+ relExpr

304+ gfExpr)

305+ evalGraphRefDatabaseContextExpr (Assign relVarName optExpr)

453306

454307evalGraphRefDatabaseContextExpr (Delete relVarName predicate) = do

455308 gfExpr <- relVarByName relVarName

456− setRelVar relVarName (Restrict (NotPredicate predicate) gfExpr)

309+ let optExpr = applyRestrictionCollapse (Restrict (NotPredicate predicate) gfExpr)

310+ setRelVar relVarName optExpr

457311

458312--union of restricted+updated portion and the unrestricted+unupdated portion

459313evalGraphRefDatabaseContextExpr (Update relVarName atomExprMap pred') = do

460314 rvExpr <- relVarByName relVarName

315+ graph <- re_graph <$> dbcRelationalExprEnv

316+ context <- getStateContext

317+ let reEnv = freshGraphRefRelationalExprEnv (Just context) graph

318+ --get the current attributes name in the relvar to ensure that we don't conflict when renaming

319+ eExprType = runGraphRefRelationalExprM reEnv (typeForGraphRefRelationalExpr rvExpr)

320+ exprType' <- case eExprType of

321+ Left err -> throwError err

322+ Right t -> pure t

461323 let unrestrictedPortion = Restrict (NotPredicate pred') rvExpr

462− tmpAttr attr = "_tmp_" <> attr --this could certainly be improved to verify that there is no attribute name conflict

324+ tmpAttr = tmpAttrC 1

325+ tmpAttrC :: Int -> AttributeName -> AttributeName

326+ tmpAttrC c attr =

327+ let tmpAttrName = "_tmp_" <> T.pack (show c) <> attr in

328+ if tmpAttrName `S.member` A.attributeNameSet (attributes exprType') then

329+ tmpAttrC (c+1) attr

330+ else

331+ tmpAttrName

463332 updateAttr nam atomExpr = Extend (AttributeExtendTupleExpr (tmpAttr nam) atomExpr)

464333 projectAndRename attr expr = Rename (tmpAttr attr) attr (Project (InvertedAttributeNames (S.singleton attr)) expr)

465334 restrictedPortion = Restrict pred' rvExpr

@@ -741,6 +610,7 @@ evalGraphRefDatabaseContextIOExpr (LoadDatabaseContextFunctions modName funcName

741610 Right dbcListFunc -> let newContext = currentContext { dbcFunctions = mergedFuncs }

742611 mergedFuncs = HS.union (dbcFunctions currentContext) (HS.fromList dbcListFunc)

743612 in putDBCIOContext newContext

613+#endif

744614evalGraphRefDatabaseContextIOExpr (CreateArbitraryRelation relVarName attrExprs range) = do

745615 --Define

746616 currentContext <- getDBCIOContext

@@ -771,22 +641,10 @@ evalGraphRefDatabaseContextIOExpr (CreateArbitraryRelation relVarName attrExprs

771641 case runDatabaseContextEvalMonad currentContext evalEnv (setRelVar relVarName (ExistingRelation rel)) of

772642 Left err -> pure (Left err)

773643 Right dbstate' -> putDBCIOContext (dbc_context dbstate')

774−#endif

775−{-

776−updateTupleWithAtomExprs :: M.Map AttributeName AtomExpr -> DatabaseContext -> TransactionGraph -> RelationTuple -> Either RelationalError RelationTuple

777−updateTupleWithAtomExprs exprMap context graph tupIn = do

778− --resolve all atom exprs

779− let

780− atomsAssoc <- mapM (\(attrName, atomExpr) -> do

781− let atom = unimplemented

782− --atom <- runReader (evalAtomExpr tupIn atomExpr) (mkRelationalExprState context graph)

783− pure (attrName, atom)

784− ) (M.toList exprMap)

785− pure (updateTupleWithAtoms (M.fromList atomsAssoc) tupIn)

786−-}

644+

787645--run verification on all constraints

788646checkConstraints :: DatabaseContext -> TransactionId -> TransactionGraph -> Either RelationalError ()

789−checkConstraints context transId graph@(TransactionGraph graphHeads transSet) =

647+checkConstraints context transId graph@(TransactionGraph graphHeads transSet) = do

790648 mapM_ (uncurry checkIncDep) (M.toList deps)

791649 where

792650 potentialGraph = TransactionGraph graphHeads (S.insert tempTrans transSet)

@@ -835,15 +693,6 @@ typeForRelationalExpr expr = do

835693 runGf = runGraphRefRelationalExprM gfEnv (typeForGraphRefRelationalExpr gfExpr)

836694 lift $ except runGf

837695

838−--returns a database context with all tuples removed

839−--this is useful for type checking and optimization

840−{-

841−contextWithEmptyTupleSets :: DatabaseContext -> DatabaseContext

842−contextWithEmptyTupleSets contextIn = contextIn { relationVariables = relVars }

843− where

844− relVars = M.map (\rel -> ExistingRelation (Relation (attributes rel) emptyTupleSet)) (relationVariables contextIn)

845−-}

846−

847696liftE :: (Monad m) => m (Either a b) -> ExceptT a m b

848697liftE v = do

849698 y <- lift v

@@ -999,58 +848,6 @@ evalGraphRefAtomExpr tupIn cons@(ConstructedAtomExpr dConsName dConsArgs _) = do

999848 mapM (evalGraphRefAtomExpr tupIn) dConsArgs

1000849 pure (ConstructedAtom dConsName aType argAtoms)

1001850

1002−{-

1003−evalAtomExpr :: RelationTuple -> AtomExpr -> RelationalExprM Atom

1004−evalAtomExpr tupIn expr =

1005− -}

1006−{-

1007−

1008−evalAtomExpr tupIn (AttributeAtomExpr attrName) = case atomForAttributeName attrName tupIn of

1009− Right atom -> pure (Right atom)

1010− err@(Left (NoSuchAttributeNamesError _)) -> do

1011− rstate <- ask

1012− let stateTup = stateTuple rstate

1013− pure (atomForAttributeName attrName stateTup)

1014− Left err -> pure (Left err)

1015−evalAtomExpr _ (NakedAtomExpr atom) = pure (Right atom)

1016−evalAtomExpr tupIn (FunctionAtomExpr funcName arguments ()) = do

1017− argTypes <- mapM (typeFromAtomExpr (tupleAttributes tupIn)) arguments

1018− context <- fmap stateElemsContext ask

1019− runExceptT $ do

1020− let functions = atomFunctions context

1021− func <- either throwE pure (atomFunctionForName funcName functions)

1022− let expectedArgCount = length (atomFuncType func) - 1

1023− actualArgCount = length argTypes

1024− safeInit [] = [] -- different behavior from normal init

1025− safeInit xs = init xs

1026− if expectedArgCount /= actualArgCount then

1027− throwE (FunctionArgumentCountMismatchError expectedArgCount actualArgCount)

1028− else do

1029− let zippedArgs = zip (safeInit (atomFuncType func)) argTypes

1030− mapM_ (\(expType, eActType) -> do

1031− actType <- either throwE pure eActType

1032− either throwE pure (atomTypeVerify expType actType)) zippedArgs

1033− evaldArgs <- mapM (liftE . evalAtomExpr tupIn) arguments

1034− case evalAtomFunction func evaldArgs of

1035− Left err -> throwE (AtomFunctionUserError err)

1036− Right result -> do

1037− --validate that the result matches the expected type

1038− _ <- either throwE pure (atomTypeVerify (last (atomFuncType func)) (atomTypeForAtom result))

1039− pure result

1040−evalAtomExpr tupIn (RelationAtomExpr relExpr) = do

1041− --merge existing state tuple context into new state tuple context to support an arbitrary number of levels, but new attributes trounce old attributes

1042− rstate <- ask

1043− runExceptT $ do

1044− let newState = mergeTuplesIntoRelationalExprState tupIn rstate

1045− relAtom <- either throwE pure (runReader (evalRelationalExpr relExpr) newState)

1046− pure (RelationAtom relAtom)

1047−evalAtomExpr tupIn cons@(ConstructedAtomExpr dConsName dConsArgs ()) = runExceptT $ do

1048− rstate <- lift ask

1049− let newState = mergeTuplesIntoRelationalExprState tupIn rstate

1050− aType <- either throwE pure (runReader (typeFromAtomExpr (tupleAttributes tupIn) cons) newState)

1051− argAtoms <- mapM (\arg -> either throwE pure (runReader (evalAtomExpr tupIn arg) newState)) dConsArgs

1052− pure (ConstructedAtom dConsName aType argAtoms)

1053−-}

1054851typeForGraphRefAtomExpr :: Attributes -> GraphRefAtomExpr -> GraphRefRelationalExprM AtomType

1055852typeForGraphRefAtomExpr attrs (AttributeAtomExpr attrName) = do

1056853 renv <- askEnv

@@ -1117,7 +914,7 @@ verifyGraphRefAtomExprTypes relIn (FunctionAtomExpr funcName funcArgExprs tid) e

1117914 let handler :: RelationalError -> GraphRefRelationalExprM AtomType

1118915 handler (AtomTypeMismatchError expSubType actSubType) = throwError (AtomFunctionTypeError funcName argCount expSubType actSubType)

1119916 handler err = throwError err

1120− verifyGraphRefAtomExprTypes relIn atomExpr expectedType2 `catchError` handler

917+ verifyGraphRefAtomExprTypes relIn atomExpr expectedType2 `catchError` handler

1121918 funcArgTypes <- mapM funcArgVerifier $ zip3 funcArgExprs expectedArgTypes [1..]

1122919 if length funcArgTypes /= length expectedArgTypes - 1 then

1123920 throwError (AtomTypeCountError funcArgTypes expectedArgTypes)

@@ -1154,15 +951,27 @@ evalGraphRefTupleExprs mAttrs (TupleExprs fixedMarker tupleExprL) = do

1154951 [] -> pure emptyAttributes

1155952 (headTuple:tailTuples) -> do

1156953 --gather up resolved atom types or throw an error if an attribute cannot be made concrete from the inferred types- this could still fail if the type cannot be inferred (e.g. from [Nothing, Nothing])

1157− let mostResolvedTypes =

1158− foldr (\tup acc ->

1159− fmap (\(tupAttr,accAttr) -> --if the attribute is a constructedatomtype, we can recurse into it to potentially resolve type variables

1160− if isResolvedAttribute accAttr then

1161− accAttr

1162− else

1163− case resolveAttributes accAttr tupAttr of

1164− Left _ -> accAttr

1165− Right val -> val) (zip (V.toList $ tupleAttributes tup) acc)) (V.toList $ tupleAttributes headTuple) tailTuples

954+ let

955+ processTupleAttrs (tupAttr, accAttr) =

956+ --if the attribute is a constructedatomtype, we can recurse into it to potentially resolve type variables

957+ if isResolvedAttribute accAttr && tupAttr == accAttr then

958+ pure accAttr

959+ else

960+ lift $ except $ resolveAttributes accAttr tupAttr

961+ mostResolvedTypes <-

962+ foldM (\acc tup -> do

963+ let zipped = zip (V.toList . attributesVec $ tupleAttributes tup) acc

964+ accNames = S.fromList $ map A.attributeName acc

965+ tupNames = A.attributeNameSet (tupleAttributes tup)

966+ attrNamesDiff = S.union (S.difference accNames tupNames) (S.difference tupNames accNames)

967+ unless (null attrNamesDiff) (throwError (AttributeNamesMismatchError attrNamesDiff))

968+ nextTupleAttrs <- mapM processTupleAttrs zipped

969+ let diff = A.attributesDifference (A.attributesFromList nextTupleAttrs) (A.attributesFromList acc)

970+ if diff == A.emptyAttributes then

971+ pure nextTupleAttrs

972+ else

973+ throwError (TupleAttributeTypeMismatchError diff)

974+ ) (V.toList . attributesVec $ tupleAttributes headTuple) tailTuples

1166975 pure (A.attributesFromList mostResolvedTypes)

1167976 --strategy: if all the tuple expr transaction markers refer to one location, then we can pass the type constructor mapping from that location, otherwise, we cannot assume that the types are the same

1168977 tConsMap <- case singularTransactions tupleExprL of

@@ -1208,56 +1017,6 @@ evalGraphRefTupleExpr mAttrs (TupleExpr tupMap) = do

12081017-- _ <- lift $ except (validateTuple tup' tConss)

12091018 pure tup'

12101019

1211−{-

1212−evalAttributeNames :: AttributeNames -> RelationalExpr -> RelationalExprM (Either RelationalError (S.Set AttributeName))

1213−evalAttributeNames attrNames expr = do

1214− eExprType <- typeForRelationalExpr expr

1215− case eExprType of

1216− Left err -> throwError err

1217− Right exprTyp -> do

1218− let typeNameSet = S.fromList (V.toList (A.attributeNames (attributes exprTyp)))

1219− case attrNames of

1220− AttributeNames names ->

1221− case A.projectionAttributesForNames names (attributes exprTyp) of

1222− Left err -> pure (Left err)

1223− Right attrs -> pure (Right (S.fromList (V.toList (A.attributeNames attrs))))

1224−

1225− InvertedAttributeNames names -> do

1226− let nonExistentAttributeNames = A.attributeNamesNotContained names typeNameSet

1227− if not (S.null nonExistentAttributeNames) then

1228− pure (Left (AttributeNamesMismatchError nonExistentAttributeNames))

1229− else

1230− pure (Right (A.nonMatchingAttributeNameSet names typeNameSet))

1231−

1232− UnionAttributeNames namesA namesB -> do

1233− eNameSetA <- evalAttributeNames namesA expr

1234− case eNameSetA of

1235− Left err -> pure (Left err)

1236− Right nameSetA -> do

1237− eNameSetB <- evalAttributeNames namesB expr

1238− case eNameSetB of

1239− Left err -> pure (Left err)

1240− Right nameSetB ->

1241− pure (Right (S.union nameSetA nameSetB))

1242−

1243− IntersectAttributeNames namesA namesB -> do

1244− eNameSetA <- evalAttributeNames namesA expr

1245− case eNameSetA of

1246− Left err -> pure (Left err)

1247− Right nameSetA -> do

1248− eNameSetB <- evalAttributeNames namesB expr

1249− case eNameSetB of

1250− Left err -> pure (Left err)

1251− Right nameSetB ->

1252− pure (Right (S.intersection nameSetA nameSetB))

1253−

1254− RelationalExprAttributeNames attrExpr -> do

1255− eAttrExprType <- typeForRelationalExpr attrExpr

1256− case eAttrExprType of

1257− Left err -> pure (Left err)

1258− Right attrExprType -> pure (Right (A.attributeNameSet (attributes attrExprType)))

1259−-}

1260−

12611020--temporary implementation until we have a proper planner+executor

12621021evalGraphRefRelationalExpr :: GraphRefRelationalExpr -> GraphRefRelationalExprM Relation

12631022evalGraphRefRelationalExpr (MakeRelationFromExprs mAttrExprs tupleExprs) = do

@@ -1486,7 +1245,7 @@ relationVariablesAsRelation ctx graph = do

14861245 let gfEnv = freshGraphRefRelationalExprEnv (Just ctx) graph

14871246 gfType <- runGraphRefRelationalExprM gfEnv (typeForGraphRefRelationalExpr gfExpr)

14881247 pure (rvName, gfType)

1489− relVarToAtomList (rvName, rel) = [TextAtom rvName, attributesToRel (attributes rel)]

1248+ relVarToAtomList (rvName, rel) = [TextAtom rvName, attributesToRel (attributesVec (attributes rel))]

14901249 attrAtoms a = [TextAtom (A.attributeName a), TextAtom (prettyAtomType (A.atomType a))]

14911250 attributesToRel attrl = case mkRelationFromList subrelAttrs (map attrAtoms (V.toList attrl)) of

14921251 Left err -> error ("relationVariablesAsRelation pooped " ++ show err)

@@ -1506,15 +1265,6 @@ evalRelationalExpr expr = do

15061265 Left err -> throwError err

15071266 Right rel -> pure rel

15081267

1509−{-

1510−relVarByName :: RelVarName -> GraphRefRelationalExprM GraphRefRelationalExpr

1511−relVarByName = do

1512− relvars <- relationVariables <$> getStateContext

1513− case M.lookup relVarName relvars of

1514− Nothing -> dbErr (RelVarNotDefinedError relVarName)

1515− Just gfexpr -> pure gfExpr

1516−-}

1517−

15181268class (MonadError RelationalError m, Monad m) => DatabaseContextM m where

15191269 getContext :: m DatabaseContext

15201270

@@ -1531,3 +1281,112 @@ relVarByName rvName = do

15311281 Nothing -> throwError (RelVarNotDefinedError rvName)

15321282 Just gfexpr -> pure gfexpr

15331283

1284+-- | resolve UncommittedTransactionMarker whenever possible- this is important in the DatabaseContext in order to mitigate self-referencing loops for updates

1285+class ResolveGraphRefTransactionMarker a where

1286+ resolve :: a -> DatabaseContextEvalMonad a

1287+

1288+-- s := s union t

1289+instance ResolveGraphRefTransactionMarker GraphRefRelationalExpr where

1290+ resolve (MakeRelationFromExprs mAttrs tupleExprs) =

1291+ MakeRelationFromExprs mAttrs <$> resolve tupleExprs

1292+ resolve orig@MakeStaticRelation{} = pure orig

1293+ resolve orig@ExistingRelation{} = pure orig

1294+ resolve orig@(RelationVariable rvName UncommittedContextMarker) = do

1295+ rvMap <- relationVariables <$> getStateContext

1296+ case M.lookup rvName rvMap of

1297+ Nothing -> pure orig

1298+ Just resolvedRv -> resolve resolvedRv

1299+ resolve orig@RelationVariable{} = pure orig

1300+ resolve (Project attrNames relExpr) = Project <$> resolve attrNames <*> resolve relExpr

1301+ resolve (Union exprA exprB) = Union <$> resolve exprA <*> resolve exprB

1302+ resolve (Join exprA exprB) = Join <$> resolve exprA <*> resolve exprB

1303+ resolve (Rename attrA attrB expr) = Rename attrA attrB <$> resolve expr

1304+ resolve (Difference exprA exprB) = Difference <$> resolve exprA <*> resolve exprB

1305+ resolve (Group namesA nameB expr) = Group <$> resolve namesA <*> pure nameB <*> resolve expr

1306+ resolve (Ungroup nameA expr) = Ungroup nameA <$> resolve expr

1307+ resolve (Restrict restrictExpr relExpr) = Restrict <$> resolve restrictExpr <*> resolve relExpr

1308+ resolve (Equals exprA exprB) = Equals <$> resolve exprA <*> resolve exprB

1309+ resolve (NotEquals exprA exprB) = NotEquals <$> resolve exprA <*> resolve exprB

1310+ resolve (Extend extendExpr relExpr) = Extend <$> resolve extendExpr <*> resolve relExpr

1311+ resolve (With withExprs relExpr) = With <$> mapM (\(nam, expr) -> (,) <$> resolve nam <*> resolve expr) withExprs <*> resolve relExpr

1312+

1313+instance ResolveGraphRefTransactionMarker GraphRefTupleExprs where

1314+ resolve (TupleExprs marker tupleExprs) =

1315+ TupleExprs marker <$> mapM resolve tupleExprs

1316+

1317+instance ResolveGraphRefTransactionMarker GraphRefTupleExpr where

1318+ resolve (TupleExpr tupMap) = do

1319+ tupMap' <- mapM (\(attrName, expr) -> (,) attrName <$> resolve expr ) (M.toList tupMap)

1320+ pure (TupleExpr (M.fromList tupMap'))

1321+

1322+instance ResolveGraphRefTransactionMarker GraphRefAttributeNames where

1323+ resolve orig@AttributeNames{} = pure orig

1324+ resolve orig@InvertedAttributeNames{} = pure orig

1325+ resolve (UnionAttributeNames namesA namesB) = UnionAttributeNames <$> resolve namesA <*> resolve namesB

1326+ resolve (IntersectAttributeNames namesA namesB) = IntersectAttributeNames <$> resolve namesA <*> resolve namesB

1327+ resolve (RelationalExprAttributeNames expr) = RelationalExprAttributeNames <$> resolve expr

1328+

1329+instance ResolveGraphRefTransactionMarker GraphRefRestrictionPredicateExpr where

1330+ resolve TruePredicate = pure TruePredicate

1331+ resolve (AndPredicate exprA exprB) = AndPredicate <$> resolve exprA <*> resolve exprB

1332+ resolve (OrPredicate exprA exprB) = OrPredicate <$> resolve exprA <*> resolve exprB

1333+ resolve (NotPredicate expr) = NotPredicate <$> resolve expr

1334+ resolve (RelationalExprPredicate expr) = RelationalExprPredicate <$> resolve expr

1335+ resolve (AtomExprPredicate expr) = AtomExprPredicate <$> resolve expr

1336+ resolve (AttributeEqualityPredicate nam expr)= AttributeEqualityPredicate nam <$> resolve expr

1337+

1338+instance ResolveGraphRefTransactionMarker GraphRefExtendTupleExpr where

1339+ resolve (AttributeExtendTupleExpr nam atomExpr) = AttributeExtendTupleExpr nam <$> resolve atomExpr

1340+

1341+instance ResolveGraphRefTransactionMarker GraphRefWithNameExpr where

1342+ resolve orig@WithNameExpr{} = pure orig -- match uncommitted marker?

1343+

1344+instance ResolveGraphRefTransactionMarker GraphRefAtomExpr where

1345+ resolve orig@AttributeAtomExpr{} = pure orig

1346+ resolve orig@NakedAtomExpr{} = pure orig

1347+ resolve (FunctionAtomExpr nam atomExprs marker) =

1348+ FunctionAtomExpr nam <$> mapM resolve atomExprs <*> pure marker

1349+ resolve (RelationAtomExpr expr) = RelationAtomExpr <$> resolve expr

1350+ resolve (ConstructedAtomExpr dConsName atomExprs marker) =

1351+ ConstructedAtomExpr dConsName <$> mapM resolve atomExprs <*> pure marker

1352+

1353+--convert series of simple Union queries into MakeStaticRelation

1354+-- this is especially useful for long, nested applications of Union with simple tuples

1355+-- Union (MakeRelation x y) (MakeRelation x y') -> MakeRelation x (y + y')

1356+

1357+--MakeRelationFromExprs Nothing (TupleExprs UncommittedContextMarker [TupleExpr (fromList [("name", NakedAtomExpr (TextAtom "steve"))])])

1358+

1359+applyUnionCollapse :: GraphRefRelationalExpr -> GraphRefRelationalExpr

1360+applyUnionCollapse = Fold.cata opt

1361+ where

1362+ opt :: RelationalExprBaseF GraphRefTransactionMarker GraphRefRelationalExpr -> GraphRefRelationalExpr

1363+ opt (UnionF exprA exprB) | exprA == exprB = exprA

1364+ opt (UnionF

1365+ exprA@(MakeRelationFromExprs mAttrs1 tupExprs1)

1366+ exprB@(MakeRelationFromExprs mAttrs2 tupExprs2)) | tupExprs1 == tupExprs2 = MakeRelationFromExprs (mAttrs1 <|> mAttrs2) tupExprs1

1367+ | tupExprsNull tupExprs1 = exprB

1368+ | tupExprsNull tupExprs2 = exprA

1369+ opt x = Fold.embed x

1370+ tupExprsNull (TupleExprs _ []) = True

1371+ tupExprsNull _ = False

1372+

1373+

1374+--UPDATE optimization- find matching where clause in "lower" levels of renaming

1375+--update x where y=1 set (x:=5,z:=10); update x where y=1 set(x:=6,z:=11)

1376+-- =>

1377+-- update x where y=1 set (x:=6,z:=11)

1378+-- future opt: match individual attributes update x where y=1 set (x:=5); update x where y=1 set (z:=11) => update x where y=1 set (x:=5,z:=11)

1379+

1380+--strategy: try to collapse the top-level update (union (restrict pred MakeRelationFromExpr) expr) if it contains the same predicate and resultant relation

1381+

1382+--DELETE optimization

1383+-- if a restriction matches a previous restriction, combine them

1384+-- O(1) since it only scans at the top level, critical in benchmarks generating redundant deletions

1385+applyRestrictionCollapse :: GraphRefRelationalExpr -> GraphRefRelationalExpr

1386+applyRestrictionCollapse orig@(Restrict npred@(NotPredicate _) expr) =

1387+ case expr of

1388+ orig'@(Restrict npred'@(NotPredicate _) _) | npred == npred' -> orig'

1389+ _ -> orig

1390+applyRestrictionCollapse expr = expr

1391+

1392+

src/lib/ProjectM36/ScriptSession.hs+11−4

@@ -18,6 +18,7 @@ import System.Info (os, arch)

1818import Data.Text (Text, unpack)

1919import Data.Maybe

2020import GHC.Paths (libdir)

21+import System.Environment

2122#if __GLASGOW_HASKELL__ >= 800

2223import GHC.LanguageExtensions

2324import GHCi.ObjLink

@@ -78,6 +79,8 @@ initScriptSession ghcPkgPaths = do

7879 handleGhcException excHandler $ runGhc (Just libdir) $ do

7980 dflags <- getSessionDynFlags

8081 let ghcVersion = projectVersion dflags

82+ -- get nix packages dir, if available

83+ mNixLibDir <- liftIO $ lookupEnv "NIX_GHC_LIBDIR"

8184

8285 sandboxPkgPaths <- liftIO $ concat <$> mapM glob [

8386 --"./dist-newstyle/packagedb/ghc-" ++ ghcVersion, --rely on cabal 3's ghc.environment install: "cabal install --lib project-m36"

@@ -89,7 +92,7 @@ initScriptSession ghcPkgPaths = do

8992 --homeDir </> ".cabal/store/ghc-" ++ ghcVersion ++ "/package.db"

9093 ]

9194

92− let localPkgPaths = map PkgConfFile (ghcPkgPaths ++ sandboxPkgPaths)

95+ let localPkgPaths = map PkgConfFile (ghcPkgPaths ++ sandboxPkgPaths ++ maybeToList mNixLibDir)

9396

9497 let dflags' = applyGopts . applyXopts $ dflags { hscTarget = HscInterpreted ,

9598 ghcLink = LinkInMemory,

@@ -125,8 +128,6 @@ initScriptSession ghcPkgPaths = do

125128 "uuid",

126129 "vector",

127130 "text",

128− "binary",

129− "vector-binary-instances",

130131 "time",

131132 "project-m36",

132133 "bytestring"]

@@ -144,7 +145,9 @@ initScriptSession ghcPkgPaths = do

144145 ideclSourceSrc = Nothing,

145146#endif

146147

147−#if __GLASGOW_HASKELL__ >= 806

148+#if __GLASGOW_HASKELL__ >= 810

149+ ideclExt = noExtField,

150+#elif __GLASGOW_HASKELL__ >= 806

148151 ideclExt = NoExt,

149152#endif

150153 ideclName = noLoc mn,

@@ -152,7 +155,11 @@ initScriptSession ghcPkgPaths = do

152155 ideclSource = False,

153156 ideclSafe = True,

154157 ideclImplicit = False,

158+#if __GLASGOW_HASKELL__ >= 810

159+ ideclQualified = if isJust mQual then QualifiedPre else NotQualified,

160+#else

155161 ideclQualified = isJust mQual,

162+#endif

156163 ideclAs = mQual,

157164 ideclHiding = Nothing

158165 }

src/lib/ProjectM36/Serialise/AtomFunctionError.hsnew file+7

@@ -0,0 +1,7 @@

1+{-# LANGUAGE DerivingVia, StandaloneDeriving #-}

2+{-# OPTIONS_GHC -fno-warn-orphans #-}

3+module ProjectM36.Serialise.AtomFunctionError where

4+import Codec.Winery

5+import ProjectM36.AtomFunctionError

7+deriving via WineryVariant AtomFunctionError instance Serialise AtomFunctionError

src/lib/ProjectM36/Serialise/Base.hsnew file+85

@@ -0,0 +1,85 @@

1+{-# LANGUAGE StandaloneDeriving, DerivingVia, TypeApplications, TypeSynonymInstances, ScopedTypeVariables #-}

2+{-# OPTIONS_GHC -fno-warn-orphans #-}

3+--Serialise instances for ProjectM36.Base data types- orphan instance city

4+module ProjectM36.Serialise.Base where

5+import Codec.Winery hiding (Schema)

6+import Codec.Winery.Internal

7+import Control.Monad

8+import ProjectM36.Base

9+import ProjectM36.MerkleHash

10+import Data.UUID

11+import Data.Proxy

12+import Data.Word

13+import ProjectM36.Attribute as A

14+import qualified Data.List.NonEmpty as NE

15+import qualified Data.Vector as V

16+import Data.Time.Calendar (Day,toGregorian,fromGregorian)

17+

18+deriving via WineryVariant Atom instance Serialise Atom

19+deriving via WineryVariant AtomType instance Serialise AtomType

20+deriving via WineryVariant Attribute instance Serialise Attribute

21+deriving via WineryVariant RelationTupleSet instance Serialise RelationTupleSet

22+deriving via WineryVariant RelationTuple instance Serialise RelationTuple

23+deriving via WineryVariant Relation instance Serialise Relation

24+deriving via WineryVariant RelationCardinality instance Serialise RelationCardinality

25+deriving via WineryVariant (RelationalExprBase a) instance Serialise a => Serialise (RelationalExprBase a)

26+deriving via WineryVariant (WithNameExprBase a) instance Serialise a => Serialise (WithNameExprBase a)

27+deriving via WineryVariant Notification instance Serialise Notification

28+deriving via WineryVariant TypeConstructorDef instance Serialise TypeConstructorDef

29+deriving via WineryVariant (TypeConstructorBase a) instance Serialise a => Serialise (TypeConstructorBase a)

30+deriving via WineryVariant DataConstructorDef instance Serialise DataConstructorDef

31+deriving via WineryVariant DataConstructorDefArg instance Serialise DataConstructorDefArg

32+deriving via WineryVariant GraphRefTransactionMarker instance Serialise GraphRefTransactionMarker

33+deriving via WineryVariant SchemaIsomorph instance Serialise SchemaIsomorph

34+deriving via WineryVariant InclusionDependency instance Serialise InclusionDependency

35+deriving via WineryVariant (DatabaseContextExprBase a) instance Serialise a => Serialise (DatabaseContextExprBase a)

36+deriving via WineryVariant (DatabaseContextIOExprBase a) instance Serialise a => Serialise (DatabaseContextIOExprBase a)

37+deriving via WineryVariant (RestrictionPredicateExprBase a) instance Serialise a => Serialise (RestrictionPredicateExprBase a)

38+deriving via WineryVariant TransactionInfo instance Serialise TransactionInfo

39+deriving via WineryVariant (AtomExprBase a) instance Serialise a => Serialise (AtomExprBase a)

40+deriving via WineryVariant MerkleHash instance Serialise MerkleHash

41+deriving via WineryVariant (AttributeExprBase a) instance Serialise a => Serialise (AttributeExprBase a)

42+deriving via WineryVariant (TupleExprsBase a) instance Serialise a => Serialise (TupleExprsBase a)

43+deriving via WineryVariant (TupleExprBase a) instance Serialise a => Serialise (TupleExprBase a)

44+deriving via WineryVariant (AttributeNamesBase a) instance Serialise a => Serialise (AttributeNamesBase a)

45+deriving via WineryVariant (ExtendTupleExprBase a) instance Serialise a => Serialise (ExtendTupleExprBase a)

46+deriving via WineryVariant Schema instance Serialise Schema

47+deriving via WineryVariant MergeStrategy instance Serialise MergeStrategy

48+

49+fromWordsTup :: (Word32, Word32, Word32, Word32) -> TransactionId

50+fromWordsTup (a,b,c,d) = fromWords a b c d

51+

52+instance Serialise TransactionId where

53+ schemaGen _ = getSchema (Proxy @(Word32, Word32, Word32, Word32))

54+ toBuilder uuid = toBuilder (toWords uuid)

55+ extractor = fromWordsTup <$> extractor

56+ decodeCurrent = fromWordsTup <$> decodeCurrent

57+

58+instance Serialise a => Serialise (NE.NonEmpty a) where

59+ schemaGen _ = SVector <$> getSchema (Proxy @a)

60+ toBuilder xs = varInt (length xs) <> foldMap toBuilder xs

61+ extractor = NE.fromList . V.toList <$> extractListBy extractor --use nonempty instead to replace error with winery error

62+ decodeCurrent = do

63+ n <- decodeVarInt

64+ l <- replicateM n decodeCurrent

65+ pure (NE.fromList l)

66+

67+fromGregorianTup :: (Integer, Int, Int) -> Day

68+fromGregorianTup (a, b, c) = fromGregorian a b c

69+

70+instance Serialise Day where

71+ schemaGen _ = getSchema (Proxy @(Integer, Int, Int))

72+ toBuilder day = toBuilder (toGregorian day)

73+ extractor = fromGregorianTup <$> extractor

74+ decodeCurrent = fromGregorianTup <$> decodeCurrent

75+

76+instance Serialise Attributes where

77+ schemaGen _ = SVector <$> getSchema (Proxy @Attribute)

78+ toBuilder attrs = varInt (V.length (attributesVec attrs)) <> foldMap toBuilder (V.toList (attributesVec attrs))

79+ extractor =

80+ attributesFromList . V.toList <$> extractListBy extractor

81+

82+ decodeCurrent = do

83+ n <- decodeVarInt

84+ l <- replicateM n decodeCurrent

85+ pure (A.attributesFromList l)

src/lib/ProjectM36/Serialise/DataFrame.hsnew file+13

@@ -0,0 +1,13 @@

1+{-# LANGUAGE DerivingVia, StandaloneDeriving #-}

2+{-# OPTIONS_GHC -fno-warn-orphans #-}

3+module ProjectM36.Serialise.DataFrame where

4+import Codec.Winery

5+import ProjectM36.DataFrame

6+import ProjectM36.Serialise.Base ()

8+deriving via WineryVariant AttributeOrderExpr instance Serialise AttributeOrderExpr

9+deriving via WineryVariant AttributeOrder instance Serialise AttributeOrder

10+deriving via WineryVariant Order instance Serialise Order

11+deriving via WineryRecord DataFrame instance Serialise DataFrame

12+deriving via WineryVariant DataFrameTuple instance Serialise DataFrameTuple

13+deriving via WineryRecord DataFrameExpr instance Serialise DataFrameExpr

src/lib/ProjectM36/Serialise/DatabaseContextFunctionError.hsnew file+7

@@ -0,0 +1,7 @@

1+{-# LANGUAGE DerivingVia, StandaloneDeriving #-}

2+{-# OPTIONS_GHC -fno-warn-orphans #-}

3+module ProjectM36.Serialise.DatabaseContextFunctionError where

4+import Codec.Winery

5+import ProjectM36.DatabaseContextFunctionError

7+deriving via WineryVariant DatabaseContextFunctionError instance Serialise DatabaseContextFunctionError

src/lib/ProjectM36/Serialise/Error.hsnew file+15

@@ -0,0 +1,15 @@

1+{-# LANGUAGE DerivingVia, StandaloneDeriving #-}

2+{-# OPTIONS_GHC -fno-warn-orphans #-}

3+module ProjectM36.Serialise.Error where

4+import ProjectM36.Error

5+import Codec.Winery

6+import ProjectM36.Serialise.Base ()

7+import ProjectM36.Serialise.AtomFunctionError ()

8+import ProjectM36.Serialise.DatabaseContextFunctionError ()

10+deriving via WineryVariant RelationalError instance Serialise RelationalError

11+deriving via WineryVariant MergeError instance Serialise MergeError

12+deriving via WineryVariant ScriptCompilationError instance Serialise ScriptCompilationError

13+deriving via WineryVariant PersistenceError instance Serialise PersistenceError

14+deriving via WineryVariant SchemaError instance Serialise SchemaError

15+deriving via WineryVariant ImportError' instance Serialise ImportError'

src/lib/ProjectM36/Serialise/IsomorphicSchema.hsnew file+7

@@ -0,0 +1,7 @@

1+{-# LANGUAGE StandaloneDeriving, DerivingVia, TypeSynonymInstances, ScopedTypeVariables #-}

2+{-# OPTIONS_GHC -fno-warn-orphans #-}

3+module ProjectM36.Serialise.IsomorphicSchema where

4+import Codec.Winery

5+import ProjectM36.IsomorphicSchema

7+deriving via WineryVariant SchemaExpr instance Serialise SchemaExpr

src/lib/ProjectM36/Serialise/MergeError.hsnew file+1

@@ -0,0 +1 @@

src/lib/ProjectM36/Server.hs+166−91

@@ -7,77 +7,119 @@ import ProjectM36.Server.RemoteCallTypes

77import ProjectM36.Server.Config (ServerConfig(..))

88import ProjectM36.FSType

10−import Control.Monad.IO.Class (liftIO)

11−#if MIN_VERSION_network_transport_tcp(0,7,0)

12−import Network.Transport.TCP (createTransport, defaultTCPParameters, defaultTCPAddr)

13−#else

14−import Network.Transport.TCP (createTransport, defaultTCPParameters)

15−#endif

16−import Network.Transport (EndPointAddress(..), newEndPoint, address)

17−import Control.Distributed.Process.Node (initRemoteTable, runProcess, newLocalNode, initRemoteTable)

18−import Control.Distributed.Process.Extras.Time (Delay(..))

19−import Control.Distributed.Process (Process, register, getSelfPid)

20−import Control.Distributed.Process.ManagedProcess (defaultProcess, UnhandledMessagePolicy(..), ProcessDefinition(..), handleCall, serve, InitHandler, InitResult(..))

21−import Control.Concurrent.MVar (putMVar, MVar)

10+import Control.Concurrent.MVar (MVar)

2211import System.IO (stderr, hPutStrLn)

2312import System.FilePath (takeDirectory)

2413import System.Directory (doesDirectoryExist)

14+import Network.RPC.Curryer.Server

15+import Network.Socket

16+import qualified StmContainers.Map as StmMap

17+import Control.Concurrent.STM

2518

26−-- the state should be a mapping of remote connection to the disconnected transaction- the graph should be the same, so discon must be removed from the stm tuple

27−--trying to refactor this for less repetition is very challenging because the return type cannot be polymorphic or the distributed-process call gets confused and drops messages

28−serverDefinition :: Bool -> Timeout -> ProcessDefinition Connection

29−serverDefinition testBool ti = defaultProcess {

30− apiHandlers = [

31− handleCall (\conn (ExecuteHeadName sessionId) -> handleExecuteHeadName ti sessionId conn),

32− handleCall (\conn (ExecuteRelationalExpr sessionId expr) -> handleExecuteRelationalExpr ti sessionId conn expr),

33− handleCall (\conn (ExecuteDataFrameExpr sessionId expr) -> handleExecuteDataFrameExpr ti sessionId conn expr),

34− handleCall (\conn (ExecuteDatabaseContextExpr sessionId expr) -> handleExecuteDatabaseContextExpr ti sessionId conn expr),

35− handleCall (\conn (ExecuteDatabaseContextIOExpr sessionId expr) -> handleExecuteDatabaseContextIOExpr ti sessionId conn expr),

36− handleCall (\conn (ExecuteGraphExpr sessionId expr) -> handleExecuteGraphExpr ti sessionId conn expr),

37− handleCall (\conn (ExecuteTransGraphRelationalExpr sessionId expr) -> handleExecuteTransGraphRelationalExpr ti sessionId conn expr),

38− handleCall (\conn (ExecuteTypeForRelationalExpr sessionId expr) -> handleExecuteTypeForRelationalExpr ti sessionId conn expr),

39− handleCall (\conn (RetrieveInclusionDependencies sessionId) -> handleRetrieveInclusionDependencies ti sessionId conn),

40− handleCall (\conn (RetrievePlanForDatabaseContextExpr sessionId dbExpr) -> handleRetrievePlanForDatabaseContextExpr ti sessionId conn dbExpr),

41− handleCall (\conn (RetrieveHeadTransactionId sessionId) -> handleRetrieveHeadTransactionId ti sessionId conn),

42− handleCall (\conn (RetrieveTransactionGraph sessionId) -> handleRetrieveTransactionGraph ti sessionId conn),

43− handleCall (\conn (Login procId) -> handleLogin ti conn procId),

44− handleCall (\conn (CreateSessionAtHead headn) -> handleCreateSessionAtHead ti conn headn),

45− handleCall (\conn (CreateSessionAtCommit commitId) -> handleCreateSessionAtCommit ti conn commitId),

46− handleCall (\conn (CloseSession sessionId) -> handleCloseSession ti sessionId conn),

47− handleCall (\conn (RetrieveAtomTypesAsRelation sessionId) -> handleRetrieveAtomTypesAsRelation ti sessionId conn),

48− handleCall (\conn (RetrieveRelationVariableSummary sessionId) -> handleRetrieveRelationVariableSummary ti sessionId conn),

49− handleCall (\conn (RetrieveAtomFunctionSummary sessionId) -> handleRetrieveAtomFunctionSummary ti sessionId conn),

50− handleCall (\conn (RetrieveDatabaseContextFunctionSummary sessionId) -> handleRetrieveDatabaseContextFunctionSummary ti sessionId conn),

51− handleCall (\conn (RetrieveCurrentSchemaName sessionId) -> handleRetrieveCurrentSchemaName ti sessionId conn),

52− handleCall (\conn (ExecuteSchemaExpr sessionId schemaExpr) -> handleExecuteSchemaExpr ti sessionId conn schemaExpr),

53− handleCall (\conn (RetrieveSessionIsDirty sessionId) -> handleRetrieveSessionIsDirty ti sessionId conn),

54− handleCall (\conn (ExecuteAutoMergeToHead sessionId strat headName') -> handleExecuteAutoMergeToHead ti sessionId conn strat headName'),

55− handleCall (\conn (RetrieveTypeConstructorMapping sessionId) -> handleRetrieveTypeConstructorMapping ti sessionId conn),

56− handleCall (\conn (ExecuteValidateMerkleHashes sessionId) -> handleValidateMerkleHashes ti sessionId conn),

57− handleCall (\conn Logout -> handleLogout ti conn)

58− ] ++ testModeHandlers,

59− unhandledMessagePolicy = Terminate

60− --unhandledMessagePolicy = Log

61− }

62− where

63− testModeHandlers = [handleCall (\conn (TestTimeout sessionId) -> handleTestTimeout ti sessionId conn) | testBool]

64−

65−initServer :: InitHandler (Connection, DatabaseName, Maybe (MVar EndPointAddress), EndPointAddress) Connection

66−initServer (conn, dbname, mAddressMVar, saddress) = do

67− registerDB dbname

68− case mAddressMVar of

69− Nothing -> pure ()

70− Just addressMVar -> liftIO $ putMVar addressMVar saddress

71− --traceShowM ("server started on " ++ show saddress)

72− pure $ InitOk conn Infinity

19+type TestMode = Bool

7320

74−registerDB :: DatabaseName -> Process ()

75−registerDB dbname = do

76− self <- getSelfPid

77− let dbname' = remoteDBLookupName dbname

78− register dbname' self

79− --liftIO $ putStrLn $ "registered " ++ (show self) ++ " " ++ dbname'

80−

21+requestHandlers :: TestMode -> Maybe Timeout -> RequestHandlers ServerState

22+requestHandlers testFlag ti =

23+ [

24+ RequestHandler (\sState (Login dbName) -> do

25+ addClientLogin dbName sState

26+ conn <- getConn sState

27+ handleLogin conn (connectionSocket sState)),

28+ RequestHandler (\sState Logout -> do

29+ conn <- getConn sState

30+ handleLogout ti conn),

31+ RequestHandler $ \sState (ExecuteHeadName sessionId) -> do

32+ --socket -> dbname --maybe create a socket->client state mapping in the server state, too

33+ conn <- getConn sState

34+ handleExecuteHeadName ti sessionId conn,

35+ RequestHandler (\sState (ExecuteRelationalExpr sessionId expr) -> do

36+ conn <- getConn sState

37+ handleExecuteRelationalExpr ti sessionId conn expr),

38+ RequestHandler (\sState (ExecuteDataFrameExpr sessionId expr) -> do

39+ conn <- getConn sState

40+ handleExecuteDataFrameExpr ti sessionId conn expr),

41+ RequestHandler (\sState (ExecuteDatabaseContextExpr sessionId expr) -> do

42+ conn <- getConn sState

43+ handleExecuteDatabaseContextExpr ti sessionId conn expr),

44+ RequestHandler (\sState (ExecuteDatabaseContextIOExpr sessionId expr) -> do

45+ conn <- getConn sState

46+ handleExecuteDatabaseContextIOExpr ti sessionId conn expr),

47+ RequestHandler (\sState (ExecuteGraphExpr sessionId expr) -> do

48+ conn <- getConn sState

49+ handleExecuteGraphExpr ti sessionId conn expr),

50+ RequestHandler (\sState (ExecuteTransGraphRelationalExpr sessionId expr) -> do

51+ conn <- getConn sState

52+ handleExecuteTransGraphRelationalExpr ti sessionId conn expr),

53+ RequestHandler (\sState (ExecuteTypeForRelationalExpr sessionId expr) -> do

54+ conn <- getConn sState

55+ handleExecuteTypeForRelationalExpr ti sessionId conn expr),

56+ RequestHandler (\sState (RetrieveInclusionDependencies sessionId) -> do

57+ conn <- getConn sState

58+ handleRetrieveInclusionDependencies ti sessionId conn),

59+ RequestHandler (\sState (RetrievePlanForDatabaseContextExpr sessionId dbExpr) -> do

60+ conn <- getConn sState

61+ handleRetrievePlanForDatabaseContextExpr ti sessionId conn dbExpr),

62+ RequestHandler (\sState (RetrieveHeadTransactionId sessionId) -> do

63+ conn <- getConn sState

64+ handleRetrieveHeadTransactionId ti sessionId conn),

65+ RequestHandler (\sState (RetrieveTransactionGraph sessionId) -> do

66+ conn <- getConn sState

67+ handleRetrieveTransactionGraph ti sessionId conn),

68+ RequestHandler (\sState (CreateSessionAtHead headn) -> do

69+ conn <- getConn sState

70+ handleCreateSessionAtHead ti conn headn),

71+ RequestHandler (\sState (CreateSessionAtCommit commitId) -> do

72+ conn <- getConn sState

73+ handleCreateSessionAtCommit ti conn commitId),

74+ RequestHandler (\sState (CloseSession sessionId) -> do

75+ conn <- getConn sState

76+ handleCloseSession sessionId conn),

77+ RequestHandler (\sState (RetrieveAtomTypesAsRelation sessionId) -> do

78+ conn <- getConn sState

79+ handleRetrieveAtomTypesAsRelation ti sessionId conn),

80+ RequestHandler (\sState (RetrieveRelationVariableSummary sessionId) -> do

81+ conn <- getConn sState

82+ handleRetrieveRelationVariableSummary ti sessionId conn),

83+ RequestHandler (\sState (RetrieveAtomFunctionSummary sessionId) -> do

84+ conn <- getConn sState

85+ handleRetrieveAtomFunctionSummary ti sessionId conn),

86+ RequestHandler (\sState (RetrieveDatabaseContextFunctionSummary sessionId) -> do

87+ conn <- getConn sState

88+ handleRetrieveDatabaseContextFunctionSummary ti sessionId conn), RequestHandler (\sState (RetrieveCurrentSchemaName sessionId) -> do

89+ conn <- getConn sState

90+ handleRetrieveCurrentSchemaName ti sessionId conn),

91+ RequestHandler (\sState (ExecuteSchemaExpr sessionId schemaExpr) -> do

92+ conn <- getConn sState

93+ handleExecuteSchemaExpr ti sessionId conn schemaExpr),

94+ RequestHandler (\sState (RetrieveSessionIsDirty sessionId) -> do

95+ conn <- getConn sState

96+ handleRetrieveSessionIsDirty ti sessionId conn),

97+ RequestHandler (\sState (ExecuteAutoMergeToHead sessionId strat headName') -> do

98+ conn <- getConn sState

99+ handleExecuteAutoMergeToHead ti sessionId conn strat headName'),

100+ RequestHandler (\sState (RetrieveTypeConstructorMapping sessionId) -> do

101+ conn <- getConn sState

102+ handleRetrieveTypeConstructorMapping ti sessionId conn),

103+ RequestHandler (\sState (ExecuteValidateMerkleHashes sessionId) -> do

104+ conn <- getConn sState

105+ handleValidateMerkleHashes ti sessionId conn)

106+ ] ++ if testFlag then testModeHandlers ti else []

107+

108+getConn :: ConnectionState ServerState -> IO Connection

109+getConn connState = do

110+ let sock = lockless (connectionSocket connState)

111+ sState = connectionServerState connState

112+ mConn <- connectionForClient sock sState

113+ case mConn of

114+ Nothing -> error "failed to find socket in client map"

115+ Just conn -> pure conn

116+

117+testModeHandlers :: Maybe Timeout -> RequestHandlers ServerState

118+testModeHandlers ti = [RequestHandler (\sState (TestTimeout sessionId) -> do

119+ conn <- getConn sState

120+ handleTestTimeout ti sessionId conn)]

121+

122+

81123-- | A notification callback which logs the notification to stderr and does nothing else.

82124loggingNotificationCallback :: NotificationCallback

83125loggingNotificationCallback notName evaldNot = hPutStrLn stderr $ "Notification received \"" ++ show notName ++ "\": " ++ show evaldNot

@@ -102,9 +144,47 @@ checkFSType performCheck strat =

102144checkFSErrorMsg :: String

103145checkFSErrorMsg = "The filesystem does not support journaling so writes may not be crash-safe. Use --disable-fscheck to disable this fatal error."

104146

147+-- Sockets do not implement hashable, so we just use their string values as keys

148+type SocketString = String

149+

150+data ServerState =

151+ ServerState {

152+ --map available databases to local database configurations

153+ stateDBMap :: StmMap.Map DatabaseName Connection,

154+ --map clients to database names- after logging in, clients are afixed to specific database names

155+ stateClientMap :: StmMap.Map SocketString DatabaseName

156+ }

157+

158+-- add a client socket to the database mapping

159+addClientLogin :: DatabaseName -> ConnectionState ServerState -> IO ()

160+addClientLogin dbName cState = do

161+ let clientMap = stateClientMap (connectionServerState cState)

162+ sock = lockless (connectionSocket cState)

163+ atomically $ do

164+ mVal <- StmMap.lookup (show sock) clientMap

165+ case mVal of

166+ Nothing -> StmMap.insert dbName (show sock) clientMap

167+ Just _ -> pure () --TODO: throw exception- user already logged in

168+

169+connectionForClient :: Socket -> ServerState -> IO (Maybe Connection)

170+connectionForClient sock sState =

171+ atomically $ do

172+ mdbname <- StmMap.lookup (show sock) (stateClientMap sState)

173+ case mdbname of

174+ Nothing -> pure Nothing

175+ Just dbname ->

176+ StmMap.lookup dbname (stateDBMap sState)

177+

178+initialServerState :: DatabaseName -> Connection -> IO ServerState

179+initialServerState dbName conn =

180+ atomically $ do

181+ dbmap <- StmMap.new

182+ clientMap <- StmMap.new

183+ StmMap.insert conn dbName dbmap

184+ pure (ServerState { stateDBMap = dbmap, stateClientMap = clientMap })

105185-- | A synchronous function to start the project-m36 daemon given an appropriate 'ServerConfig'. Note that this function only returns if the server exits. Returns False if the daemon exited due to an error. If the second argument is not Nothing, the port is put after the server is ready to service the port.

106−launchServer :: ServerConfig -> Maybe (MVar EndPointAddress) -> IO Bool

107−launchServer daemonConfig mAddressMVar = do

186+launchServer :: ServerConfig -> Maybe (MVar SockAddr) -> IO Bool

187+launchServer daemonConfig mAddr = do

108188 checkFSResult <- checkFSType (checkFS daemonConfig) (persistenceStrategy daemonConfig)

109189 if not checkFSResult then do

110190 hPutStrLn stderr checkFSErrorMsg

@@ -117,26 +197,21 @@ launchServer daemonConfig mAddressMVar = do

117197 pure False

118198 Right conn -> do

119199 let hostname = bindHost daemonConfig

120− port = bindPort daemonConfig

121−#if MIN_VERSION_network_transport_tcp(0,7,0)

122− etransport <- createTransport (defaultTCPAddr hostname (show port)) defaultTCPParameters

123−#elif MIN_VERSION_network_transport_tcp(0,6,0)

124− etransport <- createTransport hostname (show port) (\nam -> (hostname, nam)) defaultTCPParameters

125−#else

126− etransport <- createTransport hostname (show port) defaultTCPParameters

127−#endif

128− case etransport of

129− Left err -> error ("failed to create transport: " ++ show err)

130− Right transport -> do

131− eEndpoint <- newEndPoint transport

132− case eEndpoint of

133− Left err -> hPutStrLn stderr ("Failed to create transport: " ++ show err) >> pure False

134− Right endpoint -> do

135− localTCPNode <- newLocalNode transport initRemoteTable

136− --traceShowM ("newLocalNode in Server " ++ show (localNodeId localTCPNode))

137− runProcess localTCPNode $ do

138− let testBool = testMode daemonConfig

139− reqTimeout = perRequestTimeout daemonConfig

140− serve (conn, databaseName daemonConfig, mAddressMVar, address endpoint) initServer (serverDefinition testBool reqTimeout)

141− liftIO $ putStrLn "serve returned"

142− pure True

200+ port = fromIntegral (bindPort daemonConfig)

201+

202+

203+ --curryer only supports IPv4 for now

204+ let addrHints = defaultHints { addrSocketType = Stream, addrFamily = AF_INET }

205+ hostAddrs <- getAddrInfo (Just addrHints) (Just hostname) Nothing

206+ case hostAddrs of

207+ [] -> hPutStrLn stderr ("Failed to resolve: " <> hostname) >> pure False

208+ (AddrInfo _ _ _ _ (SockAddrInet _ addr32) _):_ -> do

209+ let hostAddr = hostAddressToTuple addr32

210+ mTimeout = fromIntegral <$> case perRequestTimeout daemonConfig of

211+ 0 -> Nothing

212+ v -> Just v

213+

214+ sState <- initialServerState (databaseName daemonConfig) conn

215+ serve (requestHandlers (testMode daemonConfig) mTimeout) sState hostAddr port mAddr

216+ _ -> error "unsupported socket addressing mode (IPv4 only currently)"

217+

src/lib/ProjectM36/Server/Config.hs+6

@@ -12,6 +12,12 @@ data ServerConfig = ServerConfig { persistenceStrategy :: PersistenceStrategy,

1212 }

1313 deriving (Show)

1414

15+data WebsocketServerConfig = WebsocketServerConfig { wsServerConfig :: ServerConfig,

16+ tlsCertificatePath :: Maybe String,

17+ tlsKeyPath :: Maybe String

18+ }

19+ deriving (Show)

20+

1521defaultServerConfig :: ServerConfig

1622defaultServerConfig = ServerConfig { persistenceStrategy = NoPersistence,

1723 checkFS = True,

src/lib/ProjectM36/Server/EntryPoints.hs+125−157

@@ -3,176 +3,144 @@ module ProjectM36.Server.EntryPoints where

33import ProjectM36.Base hiding (inclusionDependencies)

44import ProjectM36.IsomorphicSchema

55import ProjectM36.Client as C

6−import ProjectM36.Error

7−import Control.Distributed.Process (Process, ProcessId)

8−import Control.Distributed.Process.ManagedProcess (ProcessReply)

9−import Control.Distributed.Process.ManagedProcess.Server (reply)

10−import Control.Distributed.Process.Async (async, task, waitCancelTimeout, AsyncResult(..))

11−import Control.Monad.IO.Class (liftIO)

126import Data.Map

137import Control.Concurrent (threadDelay)

14−import Data.Typeable

15−import Data.Binary

8+import Network.RPC.Curryer.Server

9+import System.Timeout hiding (Timeout)

10+import Network.Socket

11+import Control.Exception

1612

17−timeoutOrDie :: (Binary a, Typeable a) => Timeout -> IO a -> Process (Either ServerError a)

18−timeoutOrDie micros act =

19− if micros == 0 then

20− liftIO act >>= \x -> pure (Right x)

21− else do

22− asyncUnit <- async (task (liftIO act))

23− asyncRes <- waitCancelTimeout micros asyncUnit

24− case asyncRes of

25− AsyncDone x -> pure (Right x)

26− AsyncCancelled -> pure (Left RequestTimeoutError)

27− AsyncFailed reason -> pure (Left (ProcessDiedError (show reason)))

28− AsyncLinkFailed reason -> pure (Left (ProcessDiedError (show reason)))

29− AsyncPending -> pure (Left (ProcessDiedError "process pending"))

30−

31−type Timeout = Int

32−

33−type Reply a = Process (ProcessReply (Either ServerError a) Connection)

34−

35−handleExecuteRelationalExpr :: Timeout -> SessionId -> Connection -> RelationalExpr -> Reply (Either RelationalError Relation)

36−handleExecuteRelationalExpr ti sessionId conn expr = do

37− ret <- timeoutOrDie ti (executeRelationalExpr sessionId conn expr)

38− reply ret conn

13+timeoutOrDie :: Maybe Timeout -> IO a -> IO (Maybe a)

14+timeoutOrDie mMicros act =

15+ case mMicros of

16+ Nothing -> Just <$> act

17+ Just micros ->

18+ timeout (fromIntegral micros) act

3919

40−handleExecuteDataFrameExpr :: Timeout -> SessionId -> Connection -> DataFrameExpr -> Reply (Either RelationalError DataFrame)

41−handleExecuteDataFrameExpr ti sessionId conn expr = do

42− ret <- timeoutOrDie ti (executeDataFrameExpr sessionId conn expr)

43− reply ret conn

44−

45−handleExecuteDatabaseContextExpr :: Timeout -> SessionId -> Connection -> DatabaseContextExpr -> Reply (Either RelationalError ())

46−handleExecuteDatabaseContextExpr ti sessionId conn dbexpr = do

47− ret <- timeoutOrDie ti (executeDatabaseContextExpr sessionId conn dbexpr)

48− reply ret conn

49−

50−handleExecuteDatabaseContextIOExpr :: Timeout -> SessionId -> Connection -> DatabaseContextIOExpr -> Reply (Either RelationalError ())

51−handleExecuteDatabaseContextIOExpr ti sessionId conn dbexpr = do

52− ret <- timeoutOrDie ti (executeDatabaseContextIOExpr sessionId conn dbexpr)

53− reply ret conn

54−

55−handleExecuteHeadName :: Timeout -> SessionId -> Connection -> Reply (Either RelationalError HeadName)

56−handleExecuteHeadName ti sessionId conn = do

57− ret <- timeoutOrDie ti (headName sessionId conn)

58− reply ret conn

59−

60−handleLogin :: Timeout -> Connection -> ProcessId -> Reply Bool

61−handleLogin ti conn newClientProcessId = do

62− ret <- timeoutOrDie ti (addClientNode conn newClientProcessId)

20+timeoutRelErr :: Maybe Timeout -> IO (Either RelationalError a) -> IO (Either RelationalError a)

21+timeoutRelErr mMicros act = do

22+ ret <- timeoutOrDie mMicros act

6323 case ret of

64− Right () -> reply (Right True) conn

65− Left err -> reply (Left err) conn

66−

67−handleExecuteGraphExpr :: Timeout -> SessionId -> Connection -> TransactionGraphOperator -> Reply (Either RelationalError ())

68−handleExecuteGraphExpr ti sessionId conn graphExpr = do

69− ret <- timeoutOrDie ti (executeGraphExpr sessionId conn graphExpr)

70− reply ret conn

71−

72−handleExecuteTransGraphRelationalExpr :: Timeout -> SessionId -> Connection -> TransGraphRelationalExpr -> Reply (Either RelationalError Relation)

73−handleExecuteTransGraphRelationalExpr ti sessionId conn graphExpr = do

74− ret <- timeoutOrDie ti (executeTransGraphRelationalExpr sessionId conn graphExpr)

75− reply ret conn

24+ Nothing -> throw TimeoutException

25+ Just v -> pure v

26+

7627

77−handleExecuteTypeForRelationalExpr :: Timeout -> SessionId -> Connection -> RelationalExpr -> Reply (Either RelationalError Relation)

78−handleExecuteTypeForRelationalExpr ti sessionId conn relExpr = do

79− ret <- timeoutOrDie ti (typeForRelationalExpr sessionId conn relExpr)

80− reply ret conn

81−

82−handleRetrieveInclusionDependencies :: Timeout -> SessionId -> Connection -> Reply (Either RelationalError (Map IncDepName InclusionDependency))

83−handleRetrieveInclusionDependencies ti sessionId conn = do

84− ret <- timeoutOrDie ti (inclusionDependencies sessionId conn)

85− reply ret conn

86−

87−handleRetrievePlanForDatabaseContextExpr :: Timeout -> SessionId -> Connection -> DatabaseContextExpr -> Reply (Either RelationalError GraphRefDatabaseContextExpr)

88−handleRetrievePlanForDatabaseContextExpr ti sessionId conn dbExpr = do

89− ret <- timeoutOrDie ti (planForDatabaseContextExpr sessionId conn dbExpr)

90− reply ret conn

91−

92−handleRetrieveTransactionGraph :: Timeout -> SessionId -> Connection -> Reply (Either RelationalError Relation)

93−handleRetrieveTransactionGraph ti sessionId conn = do

94− ret <- timeoutOrDie ti (transactionGraphAsRelation sessionId conn)

95− reply ret conn

96−

97−handleRetrieveHeadTransactionId :: Timeout -> SessionId -> Connection -> Reply (Either RelationalError TransactionId)

98−handleRetrieveHeadTransactionId ti sessionId conn = do

99− ret <- timeoutOrDie ti (headTransactionId sessionId conn)

100− reply ret conn

101−

102−handleCreateSessionAtCommit :: Timeout -> Connection -> TransactionId -> Reply (Either RelationalError SessionId)

103−handleCreateSessionAtCommit ti conn commitId = do

104− ret <- timeoutOrDie ti (createSessionAtCommit conn commitId)

105− reply ret conn

106−

107−handleCreateSessionAtHead :: Timeout -> Connection -> HeadName -> Reply (Either RelationalError SessionId)

108−handleCreateSessionAtHead ti conn headn = do

109− ret <- timeoutOrDie ti (createSessionAtHead conn headn)

110− reply ret conn

111−

112−handleCloseSession :: Timeout -> SessionId -> Connection -> Reply ()

113−handleCloseSession ti sessionId conn = do

114− ret <- timeoutOrDie ti (closeSession sessionId conn)

115− case ret of

116− Right () -> reply (Right ()) conn

117− Left err -> reply (Left err) conn

28+handleExecuteRelationalExpr :: Maybe Timeout -> SessionId -> Connection -> RelationalExpr -> IO (Either RelationalError Relation)

29+handleExecuteRelationalExpr ti sessionId conn expr =

30+ timeoutRelErr ti (executeRelationalExpr sessionId conn expr)

31+

32+handleExecuteDataFrameExpr :: Maybe Timeout -> SessionId -> Connection -> DataFrameExpr -> IO (Either RelationalError DataFrame)

33+handleExecuteDataFrameExpr ti sessionId conn expr =

34+ timeoutRelErr ti (executeDataFrameExpr sessionId conn expr)

35+

36+handleExecuteDatabaseContextExpr :: Maybe Timeout -> SessionId -> Connection -> DatabaseContextExpr -> IO (Either RelationalError ())

37+handleExecuteDatabaseContextExpr ti sessionId conn dbexpr =

38+ timeoutRelErr ti (executeDatabaseContextExpr sessionId conn dbexpr)

39+

40+handleExecuteDatabaseContextIOExpr :: Maybe Timeout -> SessionId -> Connection -> DatabaseContextIOExpr -> IO (Either RelationalError ())

41+handleExecuteDatabaseContextIOExpr ti sessionId conn dbexpr =

42+ timeoutRelErr ti (executeDatabaseContextIOExpr sessionId conn dbexpr)

43+

44+handleExecuteHeadName :: Maybe Timeout -> SessionId -> Connection -> IO (Either RelationalError HeadName)

45+handleExecuteHeadName ti sessionId conn =

46+ timeoutRelErr ti (headName sessionId conn)

47+

48+handleLogin :: Connection -> Locking Socket -> IO Bool

49+handleLogin conn lockSock = do

50+ addClientNode conn lockSock

51+ pure True

52+

53+handleExecuteGraphExpr :: Maybe Timeout -> SessionId -> Connection -> TransactionGraphOperator -> IO (Either RelationalError ())

54+handleExecuteGraphExpr ti sessionId conn graphExpr =

55+ timeoutRelErr ti (executeGraphExpr sessionId conn graphExpr)

56+

57+handleExecuteTransGraphRelationalExpr :: Maybe Timeout -> SessionId -> Connection -> TransGraphRelationalExpr -> IO (Either RelationalError Relation)

58+handleExecuteTransGraphRelationalExpr ti sessionId conn graphExpr =

59+ timeoutRelErr ti (executeTransGraphRelationalExpr sessionId conn graphExpr)

60+

61+handleExecuteTypeForRelationalExpr :: Maybe Timeout -> SessionId -> Connection -> RelationalExpr -> IO (Either RelationalError Relation)

62+handleExecuteTypeForRelationalExpr ti sessionId conn relExpr =

63+ timeoutRelErr ti (typeForRelationalExpr sessionId conn relExpr)

64+

65+handleRetrieveInclusionDependencies :: Maybe Timeout -> SessionId -> Connection -> IO (Either RelationalError (Map IncDepName InclusionDependency))

66+handleRetrieveInclusionDependencies ti sessionId conn =

67+ timeoutRelErr ti (inclusionDependencies sessionId conn)

68+

69+handleRetrievePlanForDatabaseContextExpr :: Maybe Timeout -> SessionId -> Connection -> DatabaseContextExpr -> IO (Either RelationalError GraphRefDatabaseContextExpr)

70+handleRetrievePlanForDatabaseContextExpr ti sessionId conn dbExpr =

71+ timeoutRelErr ti (planForDatabaseContextExpr sessionId conn dbExpr)

72+

73+handleRetrieveTransactionGraph :: Maybe Timeout -> SessionId -> Connection -> IO (Either RelationalError Relation)

74+handleRetrieveTransactionGraph ti sessionId conn =

75+ timeoutRelErr ti (transactionGraphAsRelation sessionId conn)

76+

77+handleRetrieveHeadTransactionId :: Maybe Timeout -> SessionId -> Connection -> IO (Either RelationalError TransactionId)

78+handleRetrieveHeadTransactionId ti sessionId conn =

79+ timeoutRelErr ti (headTransactionId sessionId conn)

11880

119−handleRetrieveAtomTypesAsRelation :: Timeout -> SessionId -> Connection -> Reply (Either RelationalError Relation)

120−handleRetrieveAtomTypesAsRelation ti sessionId conn = do

121− ret <- timeoutOrDie ti (atomTypesAsRelation sessionId conn)

122− reply ret conn

81+handleCreateSessionAtCommit :: Maybe Timeout -> Connection -> TransactionId -> IO (Either RelationalError SessionId)

82+handleCreateSessionAtCommit ti conn commitId =

83+ timeoutRelErr ti (createSessionAtCommit conn commitId)

84+

85+handleCreateSessionAtHead :: Maybe Timeout -> Connection -> HeadName -> IO (Either RelationalError SessionId)

86+handleCreateSessionAtHead ti conn headn =

87+ timeoutRelErr ti (createSessionAtHead conn headn)

88+

89+handleCloseSession :: SessionId -> Connection -> IO ()

90+handleCloseSession =

91+ closeSession

92+

93+handleRetrieveAtomTypesAsRelation :: Maybe Timeout -> SessionId -> Connection -> IO (Either RelationalError Relation)

94+handleRetrieveAtomTypesAsRelation ti sessionId conn =

95+ timeoutRelErr ti (atomTypesAsRelation sessionId conn)

12396

12497-- | Returns a relation which lists the names of relvars in the current session as well as its types.

125−handleRetrieveRelationVariableSummary :: Timeout -> SessionId -> Connection -> Reply (Either RelationalError Relation)

126−handleRetrieveRelationVariableSummary ti sessionId conn = do

127− ret <- timeoutOrDie ti (relationVariablesAsRelation sessionId conn)

128− reply ret conn

129−

130−handleRetrieveAtomFunctionSummary :: Timeout -> SessionId -> Connection -> Reply (Either RelationalError Relation)

131−handleRetrieveAtomFunctionSummary ti sessionId conn = do

132− ret <- timeoutOrDie ti (atomFunctionsAsRelation sessionId conn)

133− reply ret conn

134−

135−handleRetrieveDatabaseContextFunctionSummary :: Timeout -> SessionId -> Connection -> Reply (Either RelationalError Relation)

136−handleRetrieveDatabaseContextFunctionSummary ti sessionId conn = do

137− ret <- timeoutOrDie ti (databaseContextFunctionsAsRelation sessionId conn)

138− reply ret conn

139−

140−handleRetrieveCurrentSchemaName :: Timeout -> SessionId -> Connection -> Reply (Either RelationalError SchemaName)

141−handleRetrieveCurrentSchemaName ti sessionId conn = do

142− ret <- timeoutOrDie ti (currentSchemaName sessionId conn)

143− reply ret conn

98+handleRetrieveRelationVariableSummary :: Maybe Timeout -> SessionId -> Connection -> IO (Either RelationalError Relation)

99+handleRetrieveRelationVariableSummary ti sessionId conn =

100+ timeoutRelErr ti (relationVariablesAsRelation sessionId conn)

101+

102+handleRetrieveAtomFunctionSummary :: Maybe Timeout -> SessionId -> Connection -> IO (Either RelationalError Relation)

103+handleRetrieveAtomFunctionSummary ti sessionId conn =

104+ timeoutRelErr ti (atomFunctionsAsRelation sessionId conn)

105+

106+handleRetrieveDatabaseContextFunctionSummary :: Maybe Timeout -> SessionId -> Connection -> IO (Either RelationalError Relation)

107+handleRetrieveDatabaseContextFunctionSummary ti sessionId conn =

108+ timeoutRelErr ti (databaseContextFunctionsAsRelation sessionId conn)

109+

110+handleRetrieveCurrentSchemaName :: Maybe Timeout -> SessionId -> Connection -> IO (Either RelationalError SchemaName)

111+handleRetrieveCurrentSchemaName ti sessionId conn =

112+ timeoutRelErr ti (currentSchemaName sessionId conn)

144113

145−handleExecuteSchemaExpr :: Timeout -> SessionId -> Connection -> SchemaExpr -> Reply (Either RelationalError ())

146−handleExecuteSchemaExpr ti sessionId conn schemaExpr = do

147− ret <- timeoutOrDie ti (executeSchemaExpr sessionId conn schemaExpr)

148− reply ret conn

114+handleExecuteSchemaExpr :: Maybe Timeout -> SessionId -> Connection -> SchemaExpr -> IO (Either RelationalError ())

115+handleExecuteSchemaExpr ti sessionId conn schemaExpr =

116+ timeoutRelErr ti (executeSchemaExpr sessionId conn schemaExpr)

149117

150−handleLogout :: Timeout -> Connection -> Reply Bool

151−handleLogout _ =

118+handleLogout :: Maybe Timeout -> Connection -> IO Bool

119+handleLogout _ _ =

152120 --liftIO $ closeRemote_ conn

153− reply (pure True)

121+ pure True

154122

155−handleTestTimeout :: Timeout -> SessionId -> Connection -> Reply Bool

156−handleTestTimeout ti _ conn = do

157− ret <- timeoutOrDie ti (threadDelay 100000 >> pure True)

158− reply ret conn

123+handleTestTimeout :: Maybe Timeout -> SessionId -> Connection -> IO Bool

124+handleTestTimeout ti _ _ = do

125+ ret <- timeoutRelErr ti (threadDelay 100000 >> pure (Right ()))

126+ case ret of

127+ Right () -> pure True

128+ Left _ -> pure False

159129

160−handleRetrieveSessionIsDirty :: Timeout -> SessionId -> Connection -> Reply (Either RelationalError Bool)

161−handleRetrieveSessionIsDirty ti sessionId conn = do

162− ret <- timeoutOrDie ti (disconnectedTransactionIsDirty sessionId conn)

163− reply ret conn

164−

165−handleExecuteAutoMergeToHead :: Timeout -> SessionId -> Connection -> MergeStrategy -> HeadName -> Reply (Either RelationalError ())

166−handleExecuteAutoMergeToHead ti sessionId conn strat headName' = do

167− ret <- timeoutOrDie ti (autoMergeToHead sessionId conn strat headName')

168− reply ret conn

130+

131+

132+handleRetrieveSessionIsDirty :: Maybe Timeout -> SessionId -> Connection -> IO (Either RelationalError Bool)

133+handleRetrieveSessionIsDirty ti sessionId conn =

134+ timeoutRelErr ti (disconnectedTransactionIsDirty sessionId conn)

135+

136+handleExecuteAutoMergeToHead :: Maybe Timeout -> SessionId -> Connection -> MergeStrategy -> HeadName -> IO (Either RelationalError ())

137+handleExecuteAutoMergeToHead ti sessionId conn strat headName' =

138+ timeoutRelErr ti (autoMergeToHead sessionId conn strat headName')

169139

170−handleRetrieveTypeConstructorMapping :: Timeout -> SessionId -> Connection -> Reply (Either RelationalError TypeConstructorMapping)

171−handleRetrieveTypeConstructorMapping ti sessionId conn = do

172− ret <- timeoutOrDie ti (C.typeConstructorMapping sessionId conn)

173− reply ret conn

140+handleRetrieveTypeConstructorMapping :: Maybe Timeout -> SessionId -> Connection -> IO (Either RelationalError TypeConstructorMapping)

141+handleRetrieveTypeConstructorMapping ti sessionId conn =

142+ timeoutRelErr ti (C.typeConstructorMapping sessionId conn)

174143

175−handleValidateMerkleHashes :: Timeout -> SessionId -> Connection -> Reply (Either RelationalError ())

176−handleValidateMerkleHashes ti sessionId conn = do

177− ret <- timeoutOrDie ti (C.validateMerkleHashes sessionId conn)

178− reply ret conn

144+handleValidateMerkleHashes :: Maybe Timeout -> SessionId -> Connection -> IO (Either RelationalError ())

145+handleValidateMerkleHashes ti sessionId conn =

146+ timeoutRelErr ti (C.validateMerkleHashes sessionId conn)

src/lib/ProjectM36/Server/ParseArgs.hs+38−15

@@ -17,14 +17,14 @@ parseArgsWithDefaults defaults = ServerConfig <$>

1717 many parseGhcPkgPath <*>

1818 parseTimeout (perRequestTimeout defaults) <*>

1919 parseTestMode

20−

20+

2121parsePersistenceStrategy :: Parser PersistenceStrategy

2222parsePersistenceStrategy = CrashSafePersistence <$> (dbdirOpt <* fsyncOpt) <|>

2323 MinimalPersistence <$> dbdirOpt <|>

2424 pure NoPersistence

25− where

26− dbdirOpt = strOption (short 'd' <>

27− long "database-directory" <>

25+ where

26+ dbdirOpt = strOption (short 'd' <>

27+ long "database-directory" <>

2828 metavar "DIRECTORY" <>

2929 showDefaultWith show

3030 )

@@ -34,46 +34,69 @@ parsePersistenceStrategy = CrashSafePersistence <$> (dbdirOpt <* fsyncOpt) <|>

3434

3535parseTestMode :: Parser Bool

3636parseTestMode = flag True False (long "test-mode" <> hidden)

37−

38−parseCheckFS :: Parser Bool

37+

38+parseCheckFS :: Parser Bool

3939parseCheckFS = flag True False (long "disable-fscheck" <>

4040 help "Disable filesystem check for journaling.")

41−

41+

4242parseDatabaseName :: Parser DatabaseName

4343parseDatabaseName = strOption (short 'n' <>

4444 long "database" <>

4545 metavar "DATABASE_NAME")

4646

47−parseHostname :: Hostname -> Parser Hostname

47+parseHostname :: Hostname -> Parser Hostname

4848parseHostname defHostname = strOption (short 'h' <>

4949 long "hostname" <>

5050 metavar "HOST_NAME" <>

5151 value defHostname)

52−

53−parsePort :: Port -> Parser Port

52+

53+parsePort :: Port -> Parser Port

5454parsePort defPort = option auto (short 'p' <>

5555 long "port" <>

5656 metavar "PORT_NUMBER" <>

5757 value defPort)

58−

58+

5959parseGhcPkgPath :: Parser String

6060parseGhcPkgPath = strOption (long "ghc-pkg-dir" <>

6161 metavar "GHC_PACKAGE_DIRECTORY")

62−

63−parseTimeout :: Int -> Parser Int

62+

63+parseTimeout :: Int -> Parser Int

6464parseTimeout defTimeout = option auto (long "timeout" <>

6565 metavar "MICROSECONDS" <>

6666 value defTimeout)

6767

6868parseConfig :: IO ServerConfig

6969parseConfig = parseConfigWithDefaults defaultServerConfig

70−

70+

7171parseConfigWithDefaults :: ServerConfig -> IO ServerConfig

7272parseConfigWithDefaults defaults = execParser (info (parseArgsWithDefaults defaults <**> helpOption) idm)

7373

74+parseWSConfigWithDefaults :: ServerConfig -> IO WebsocketServerConfig

75+parseWSConfigWithDefaults defaults = execParser (info (parseWSArgsWithDefaults defaults <**> helpOption) idm)

76+

77+parseWSArgsWithDefaults :: ServerConfig -> Parser WebsocketServerConfig

78+parseWSArgsWithDefaults defaults = WebsocketServerConfig <$>

79+ parseArgsWithDefaults defaults <*>

80+ parseTlsCertificatePath <*>

81+ parseTlsKeyPath

82+

83+

84+parseTlsCertificatePath :: Parser (Maybe String)

85+parseTlsCertificatePath = optional $ strOption (long "tls-certificate-path" <>

86+ metavar "TLS_CERTIFICATE_PATH")

87+

88+parseTlsKeyPath :: Parser (Maybe String)

89+parseTlsKeyPath = optional $ strOption (long "tls-key-path" <>

90+ metavar "TLS_KEY_PATH")

7491

7592helpOption :: Parser (a -> a)

76−helpOption = abortOption ShowHelpText $ mconcat

93+helpOption = abortOption helpText $ mconcat

7794 [ long "help"

7895 , help "Show this help text"

7996 , hidden ]

97+ where

98+#if MIN_VERSION_optparse_applicative(0,16,0)

99+ helpText = ShowHelpText Nothing

100+#else

101+ helpText = ShowHelpText

102+#endif

src/lib/ProjectM36/Server/RemoteCallTypes.hs+65−36

@@ -1,4 +1,4 @@

1−{-# LANGUAGE DeriveAnyClass, DeriveGeneric #-}

1+{-# LANGUAGE DeriveGeneric, DerivingVia, CPP #-}

22module ProjectM36.Server.RemoteCallTypes where

33import ProjectM36.Base

44import ProjectM36.IsomorphicSchema

@@ -6,69 +6,98 @@ import ProjectM36.TransactionGraph

66import ProjectM36.DataFrame

77import ProjectM36.TransGraphRelationalExpression

88import ProjectM36.Session

9+import ProjectM36.Serialise.DataFrame ()

10+import ProjectM36.Serialise.IsomorphicSchema ()

911import GHC.Generics

10−import Data.Binary

11−import Control.Distributed.Process (ProcessId)

12+import Codec.Winery

13+

14+#define RPCData(typeName) deriving Generic \

15+ deriving Serialise via WineryVariant typeName

1216

1317{-# ANN module ("HLint: ignore Use newtype instead of data" :: String) #-}

1418-- | The initial login message. The argument should be the process id of the initiating client. This ProcessId will receive notification callbacks.

15−data Login = Login ProcessId

16− deriving (Binary, Generic)

19+data Login = Login DatabaseName

20+ RPCData(Login)

1721

1822data Logout = Logout

19− deriving (Binary, Generic)

20−data ExecuteRelationalExpr = ExecuteRelationalExpr SessionId RelationalExpr

21− deriving (Binary, Generic)

23+ RPCData(Logout)

24+

25+data ExecuteRelationalExpr = ExecuteRelationalExpr SessionId RelationalExpr

26+ RPCData(ExecuteRelationalExpr)

27+

2228data ExecuteDataFrameExpr = ExecuteDataFrameExpr SessionId DataFrameExpr

23− deriving (Binary, Generic)

29+ RPCData(ExecuteDataFrameExpr)

30+

2431data ExecuteDatabaseContextExpr = ExecuteDatabaseContextExpr SessionId DatabaseContextExpr

25− deriving (Binary, Generic)

32+ RPCData(ExecuteDatabaseContextExpr)

33+

2634data ExecuteDatabaseContextIOExpr = ExecuteDatabaseContextIOExpr SessionId DatabaseContextIOExpr

27− deriving (Binary, Generic)

35+ RPCData(ExecuteDatabaseContextIOExpr)

36+

2837data ExecuteGraphExpr = ExecuteGraphExpr SessionId TransactionGraphOperator

29− deriving (Binary, Generic)

38+ RPCData(ExecuteGraphExpr)

39+

3040data ExecuteTransGraphRelationalExpr = ExecuteTransGraphRelationalExpr SessionId TransGraphRelationalExpr

31− deriving (Binary, Generic)

41+ RPCData(ExecuteTransGraphRelationalExpr)

42+

3243data ExecuteHeadName = ExecuteHeadName SessionId

33− deriving (Binary, Generic)

44+ RPCData(ExecuteHeadName)

45+

3446data ExecuteTypeForRelationalExpr = ExecuteTypeForRelationalExpr SessionId RelationalExpr

35− deriving (Binary, Generic)

36−data ExecuteSchemaExpr = ExecuteSchemaExpr SessionId SchemaExpr

37− deriving (Binary, Generic)

47+ RPCData(ExecuteTypeForRelationalExpr)

48+

49+data ExecuteSchemaExpr = ExecuteSchemaExpr SessionId SchemaExpr RPCData(ExecuteSchemaExpr)

50+

3851data ExecuteSetCurrentSchema = ExecuteSetCurrentSchema SessionId SchemaName

39− deriving (Binary, Generic)

52+ RPCData(ExecuteSetCurrentSchema)

53+

4054data RetrieveInclusionDependencies = RetrieveInclusionDependencies SessionId

41− deriving (Binary, Generic)

55+ RPCData(RetrieveInclusionDependencies)

56+

4257data RetrievePlanForDatabaseContextExpr = RetrievePlanForDatabaseContextExpr SessionId DatabaseContextExpr

43− deriving (Binary, Generic)

58+ RPCData(RetrievePlanForDatabaseContextExpr)

59+

4460data RetrieveTransactionGraph = RetrieveTransactionGraph SessionId

45− deriving (Binary, Generic)

61+ RPCData(RetrieveTransactionGraph)

62+

4663data RetrieveHeadTransactionId = RetrieveHeadTransactionId SessionId

47− deriving (Binary, Generic)

64+ RPCData(RetrieveHeadTransactionId)

65+

4866data CreateSessionAtCommit = CreateSessionAtCommit TransactionId

49− deriving (Binary, Generic)

67+ RPCData(CreateSessionAtCommit)

68+

5069data CreateSessionAtHead = CreateSessionAtHead HeadName

51− deriving (Binary, Generic)

70+ RPCData(CreateSessionAtHead)

71+

5272data CloseSession = CloseSession SessionId

53− deriving (Binary, Generic)

73+ RPCData(CloseSession)

74+

5475data RetrieveAtomTypesAsRelation = RetrieveAtomTypesAsRelation SessionId

55− deriving (Binary, Generic)

76+ RPCData(RetrieveAtomTypesAsRelation)

77+

5678data RetrieveRelationVariableSummary = RetrieveRelationVariableSummary SessionId

57− deriving (Binary, Generic)

79+ RPCData(RetrieveRelationVariableSummary)

80+

5881data RetrieveAtomFunctionSummary = RetrieveAtomFunctionSummary SessionId

59− deriving (Binary, Generic)

82+ RPCData(RetrieveAtomFunctionSummary)

83+

6084data RetrieveDatabaseContextFunctionSummary = RetrieveDatabaseContextFunctionSummary SessionId

61− deriving (Binary, Generic)

85+ RPCData(RetrieveDatabaseContextFunctionSummary)

86+

6287data RetrieveCurrentSchemaName = RetrieveCurrentSchemaName SessionId

63− deriving (Binary, Generic)

88+ RPCData(RetrieveCurrentSchemaName)

89+

6490data TestTimeout = TestTimeout SessionId

65− deriving (Binary, Generic)

66−data RetrieveSessionIsDirty = RetrieveSessionIsDirty SessionId

67− deriving (Binary, Generic)

91+ RPCData(TestTimeout)

92+

93+data RetrieveSessionIsDirty = RetrieveSessionIsDirty SessionId

94+ RPCData(RetrieveSessionIsDirty)

95+

6896data ExecuteAutoMergeToHead = ExecuteAutoMergeToHead SessionId MergeStrategy HeadName

69− deriving (Binary, Generic)

97+ RPCData(ExecuteAutoMergeToHead)

98+

7099data RetrieveTypeConstructorMapping = RetrieveTypeConstructorMapping SessionId

71− deriving (Binary, Generic)

100+ RPCData(RetrieveTypeConstructorMapping)

72101

73102data ExecuteValidateMerkleHashes = ExecuteValidateMerkleHashes SessionId

74− deriving (Binary, Generic)

103+ RPCData(ExecuteValidateMerkleHashes)

src/lib/ProjectM36/Shortcuts.hsnew file+247

@@ -0,0 +1,247 @@

1+{-# OPTIONS_GHC -fno-warn-orphans #-}

2+{-# LANGUAGE ScopedTypeVariables #-}

3+{-# LANGUAGE TypeApplications #-}

4+{-# LANGUAGE FlexibleInstances #-}

5+{-# LANGUAGE MultiParamTypeClasses #-}

6+{-# LANGUAGE TypeFamilies #-}

7+{-# LANGUAGE ExtendedDefaultRules #-}

8+{-# LANGUAGE ExistentialQuantification #-}

9+{-# LANGUAGE FlexibleContexts #-}

10+{-# LANGUAGE GADTs #-}

11+{-# LANGUAGE UndecidableInstances #-}

12+module ProjectM36.Shortcuts where

13+-- users need OverloadedLabels, OverloadedLists, and default(Int,Text) to use these shortcuts.

14+import Data.Text hiding (foldl, map)

15+import ProjectM36.Base

16+import ProjectM36.Relation

17+import ProjectM36.Atomable

18+import Prelude hiding ((!!))

19+import Data.Proxy

20+import GHC.OverloadedLabels

21+import GHC.TypeLits hiding (Text)

22+import qualified Data.Text as T

23+import qualified Data.Map as M

24+import qualified Data.Set as S

25+import GHC.Exts (IsList(..))

26+import Data.Convertible

27+

28+default (Text)

29+

30+instance IsList (AttributeNamesBase ()) where

31+ type Item (AttributeNamesBase ()) = AttributeName

32+ fromList = AttributeNames . S.fromList

33+ toList (AttributeNames ns) = S.toList ns

34+ toList _ = error "needs AttributeNames"

35+

36+instance IsList (TupleExprsBase ()) where

37+ type Item TupleExprs = TupleExpr

38+ fromList ts = TupleExprs () ts

39+ toList (TupleExprs _ ts) = ts

40+

41+instance IsList TupleExpr where

42+ type Item TupleExpr = (AttributeName, AtomExpr)

43+ fromList attributeValues = TupleExpr (M.fromList attributeValues)

44+ toList (TupleExpr attributeValues) = M.toList attributeValues

45+

46+

47+-- #xxx :: Text

48+instance KnownSymbol x => IsLabel x Text where

49+ fromLabel = T.pack $ symbolVal @x Proxy

50+

51+-- #relvarName :: RelationalExpr

52+instance KnownSymbol x => IsLabel x RelationalExpr where

53+ fromLabel = RelationVariable (T.pack $ symbolVal @x Proxy) ()

54+

55+-- *Main> #a Int :: AttributeExpr

56+-- NakedAttributeExpr (Attribute "a" IntAtomType)

57+-- *Main> #a (Attr @[Int]) :: AttributeExpr

58+-- NakedAttributeExpr (Attribute "a" (ConstructedAtomType "List" (fromList [("a",IntAtomType)])))

59+-- can't offer a Relation atomtype -- don't know how to express a Relation type in haskell type. Maybe something a HList of (Text, a) ?

60+--

61+-- ps. I don't understand the usage of "AttributeAndTypeNameExpr AttributeName TypeConstructor a"

62+instance (KnownSymbol x, Atomable a)=> IsLabel x (HaskAtomType a -> AttributeExpr) where

63+ fromLabel = (NakedAttributeExpr . Attribute name) . toAtomType''

64+ where name = T.pack $ symbolVal @x Proxy

65+

66+-- (#a 1) :: ExtendTupleExpr

67+-- no need for :=

68+instance (Convertible a AtomExpr, KnownSymbol x) => IsLabel x (a -> ExtendTupleExpr) where

69+ fromLabel x = AttributeExtendTupleExpr name (convert x)

70+ where name = T.pack $ symbolVal @x Proxy

71+

72+-- #name AtomExpr

73+-- ex. tuple [ #name 3 ]

74+-- default(Text) is needed in client code to avoid `no Atomable Char`

75+instance (Convertible a AtomExpr, KnownSymbol x) => IsLabel x (a -> (AttributeName, AtomExpr)) where

76+ fromLabel = \x -> (name, convert x)

77+ where name = T.pack $ symbolVal @x Proxy

78+

79+-- *Main> #a [1] :: AtomExpr

80+-- FunctionAtomExpr "a" [NakedAtomExpr (IntegerAtom 1)] ()

81+--

82+-- This usage is not working in RestrictionPredicateExpr and AttributeExtendTupleExpr. Use f "a" [1] instead.

83+instance (KnownSymbol x, Convertible a AtomExpr) => IsLabel x ([a] -> AtomExpr) where

84+ fromLabel = \as' -> FunctionAtomExpr name (map convert as') ()

85+ where name = T.pack $ symbolVal @x Proxy

86+

87+instance (KnownSymbol x) => IsLabel x AtomExpr where

88+ fromLabel = AttributeAtomExpr name

89+ where name = T.pack $ symbolVal @x Proxy

90+

91+

92+data HaskAtomType a where

93+ Int :: HaskAtomType Int

94+ Integer :: HaskAtomType Integer

95+ Double :: HaskAtomType Double

96+ Text :: HaskAtomType Text

97+-- Day :: HaskAtomType Day

98+-- DateTime :: HaskAtomType DateTime

99+-- ByteString :: HaskAtomType ByteString

100+ Bool :: HaskAtomType Bool

101+ Attr :: Atomable a => HaskAtomType a -- a Proxy-like value for type application.

102+

103+toAtomType'' :: Atomable a => HaskAtomType a -> AtomType

104+toAtomType'' (_ :: HaskAtomType a) = toAtomType (Proxy @a)

105+

106+-- usage: relation [tuple [#a 1, #b "b"], tuple [#a 2, #b "b"]]

107+relation :: [TupleExpr] -> RelationalExpr

108+relation ts = MakeRelationFromExprs Nothing (TupleExprs () ts)

109+

110+relation' :: [AttributeExprBase ()] -> [TupleExpr] -> RelationalExpr

111+relation' as' ts = MakeRelationFromExprs (Just as') (TupleExprs () ts)

112+

113+-- usage: tuple [#name "Mike",#age 6]

114+tuple :: [(AttributeName, AtomExpr)] -> TupleExprBase ()

115+tuple as' = TupleExpr (M.fromList as')

116+

117+-- #a rename [#b `as` #c]

118+rename :: RelationalExpr -> [(AttributeName,AttributeName)] -> RelationalExpr

119+rename relExpr renameList = case renameList of

120+ [] -> Restrict TruePredicate relExpr

121+ renames ->

122+ foldl (\acc (old,new) -> Rename old new acc) relExpr renames

123+

124+--project !!

125+-- #a !! [#b,#c]

126+infix 9 !!

127+(!!) :: RelationalExpr -> AttributeNames -> RelationalExpr

128+relExpr !! xs = Project xs relExpr

129+

130+--join ><

131+-- #a >< #b

132+(><) :: RelationalExpr -> RelationalExpr -> RelationalExpr

133+a >< b = Join a b

134+

135+allBut :: AttributeNames -> AttributeNames

136+allBut (AttributeNames ns) = InvertedAttributeNames ns

137+allBut _ = error "give allBut something other than attribute names."

138+

139+allFrom :: RelationalExpr -> AttributeNames

140+allFrom = RelationalExprAttributeNames

141+

142+as :: AttributeNames -> AttributeName -> (AttributeNames, AttributeName)

143+as = (,)

144+

145+-- #a `group` ([#b,#c] `as` #d)

146+group :: RelationalExpr -> (AttributeNames, AttributeName) -> RelationalExpr

147+group relExpr (aNames, aName) = Group aNames aName relExpr

148+

149+-- #a `ungroup` #b

150+ungroup :: RelationalExpr -> AttributeName -> RelationalExpr

151+ungroup relExpr aName = Ungroup aName relExpr

152+

153+-- *Main> #a #:= true #: ( #b (f "count" [1,2]))

154+-- Assign "a" (Extend (AttributeExtendTupleExpr "b" (FunctionAtomExpr "count" [NakedAtomExpr (IntegerAtom 1),NakedAtomExpr (IntegerAtom 2)] ())) (ExistingRelation (Relation attributesFromList [] (RelationTupleSet {asList = [RelationTuple attributesFromList [] []]}))))

155+(#:) :: RelationalExpr -> ExtendTupleExpr -> RelationalExpr

156+a #: b = Extend b a

157+infix 8 #:

158+

159+instance Convertible AtomExpr AtomExpr where

160+ safeConvert n = Right n

161+

162+instance Convertible RelVarName AtomExpr where

163+ safeConvert n = Right $ RelationAtomExpr (RelationVariable n ())

164+

165+instance Convertible RelationalExpr AtomExpr where

166+ safeConvert relExpr = Right $ RelationAtomExpr relExpr

167+

168+instance Convertible RelVarName RelationalExpr where

169+ safeConvert n = Right $ RelationVariable n ()

170+

171+-- @ in tutd

172+-- (@@) "aaa"

173+(@@) :: AttributeName -> AtomExpr

174+(@@) = AttributeAtomExpr

175+

176+-- works in RestrictedPredicateExpr and AttributeExtendTupleExpr

177+-- usage: f "gte" [1]

178+f :: Convertible a AtomExpr => AtomFunctionName -> [a] -> AtomExpr

179+f n as' = FunctionAtomExpr n (map convert as') ()

180+

181+-- DatabaseContextExpr

182+-- define

183+(#::) :: RelVarName -> [AttributeExpr] -> DatabaseContextExpr

184+s #:: xs = Define s xs

185+infix 5 #::

186+

187+-- assign

188+(#:=) :: RelVarName -> RelationalExpr -> DatabaseContextExpr

189+s #:= r = Assign s r

190+infix 5 #:=

191+

192+class Boolean a b where

193+ (&&&) :: a -> b -> RestrictionPredicateExpr

194+ infixl 6 &&&

195+ (|||) :: a -> b -> RestrictionPredicateExpr

196+ infixl 5 |||

197+

198+-- where: @~ mimics the restriction symbol in algebra

199+-- usage: true #: (#a 1) @~ #a ?= 1 &&& not' false ||| (f "gte" [1])

200+(@~) :: Convertible a RestrictionPredicateExpr => RelationalExpr -> a -> RelationalExpr

201+(@~) relExpr resPreExpr = Restrict (convert resPreExpr) relExpr

202+infix 4 @~

203+

204+true :: RelationalExpr

205+true = ExistingRelation relationTrue

206+

207+false :: RelationalExpr

208+false = ExistingRelation relationFalse

209+

210+trueP :: RestrictionPredicateExprBase a

211+trueP = TruePredicate

212+

213+falseP :: RestrictionPredicateExprBase a

214+falseP = NotPredicate TruePredicate

215+

216+(?=) :: Convertible a AtomExpr => AttributeName -> a -> RestrictionPredicateExpr

217+(?=) name a = AttributeEqualityPredicate name (convert a)

218+infix 9 ?=

219+

220+not' :: Convertible a RestrictionPredicateExpr => a -> RestrictionPredicateExpr

221+not' = NotPredicate . convert

222+

223+instance (Convertible a RestrictionPredicateExpr, Convertible b RestrictionPredicateExpr) => Boolean a b where

224+ a &&& b = AndPredicate (convert a) (convert b)

225+ a ||| b = OrPredicate (convert a) (convert b)

226+

227+instance {-# Incoherent #-} Atomable a => Convertible a RestrictionPredicateExpr where

228+ safeConvert n = Right $ AtomExprPredicate $ toAtomExpr . toAtom $ n

229+

230+instance {-# Incoherent #-} Convertible RelationalExpr RestrictionPredicateExpr where

231+ safeConvert a = Right $ RelationalExprPredicate a

232+

233+instance {-# Incoherent #-} Convertible AtomExpr RestrictionPredicateExpr where

234+ safeConvert a = Right $ AtomExprPredicate a

235+

236+instance {-# Incoherent #-} Convertible RestrictionPredicateExpr RestrictionPredicateExpr where

237+ safeConvert a = Right a

238+

239+instance {-# Incoherent #-} Atomable a => Convertible a AtomExpr where

240+ safeConvert n = Right $ toAtomExpr . toAtom $ n

241+

242+toAtomExpr :: Atom -> AtomExpr

243+toAtomExpr (ConstructedAtom n _ xs) = ConstructedAtomExpr n (toAtomExpr <$> xs) ()

244+toAtomExpr a = NakedAtomExpr a

245+

246+

247+

src/lib/ProjectM36/StaticOptimizer.hs+4−3

@@ -22,8 +22,6 @@ import qualified Data.Set as S

2222

2323-- the static optimizer performs optimizations which need not take any specific-relation statistics into account

2424

25−--import Debug.Trace

26−

2725data GraphRefSOptRelationalExprEnv =

2826 GraphRefSOptRelationalExprEnv

2927 {

@@ -179,7 +177,7 @@ fullOptimizeGraphRefRelationalExpr expr = do

179177optimizeGraphRefRelationalExpr :: GraphRefRelationalExpr -> GraphRefSOptRelationalExprM GraphRefRelationalExpr

180178optimizeGraphRefRelationalExpr e@(MakeStaticRelation _ _) = pure e

181179

182−optimizeGraphRefRelationalExpr e@(MakeRelationFromExprs _ _) = pure e

180+optimizeGraphRefRelationalExpr e@MakeRelationFromExprs{} = pure e

183181

184182optimizeGraphRefRelationalExpr e@(ExistingRelation _) = pure e

185183

@@ -209,6 +207,8 @@ optimizeGraphRefRelationalExpr (Union exprA exprB) = do

209207 case (optExprA, optExprB) of

210208 (Restrict predA (RelationVariable nameA sA),

211209 Restrict predB (RelationVariable nameB sB)) | nameA == nameB && sA == sB -> pure (Restrict (AndPredicate predA predB) (RelationVariable nameA sA))

210+ (exprA', exprB') | isEmptyRelationExpr exprA' -> pure exprB'

211+ | isEmptyRelationExpr exprB' -> pure exprA'

212212 _ -> if optExprA == optExprB then

213213 pure optExprA

214214 else

@@ -575,3 +575,4 @@ applyStaticRestrictionPushdown expr = case expr of

575575-- no optimizations available

576576optimizeDatabaseContextIOExpr :: GraphRefDatabaseContextIOExpr -> GraphRefSOptDatabaseContextExprM GraphRefDatabaseContextIOExpr

577577optimizeDatabaseContextIOExpr = pure

578+

src/lib/ProjectM36/TransGraphRelationalExpression.hs−17

@@ -10,43 +10,26 @@ import Control.Monad.Trans.Reader

1010import Control.Monad.Trans.Class

1111import Control.Monad.Trans.Except

1212import Data.Functor.Identity

13−import Data.Binary

1413

1514-- | The TransGraphRelationalExpression is equivalent to a relational expression except that relation variables can reference points in the transaction graph (at previous points in time).

1615type TransGraphRelationalExpr = RelationalExprBase TransactionIdLookup

1716

18−instance Binary TransGraphRelationalExpr

19−

2017type TransGraphAttributeNames = AttributeNamesBase TransactionIdLookup

2118

22−instance Binary TransGraphAttributeNames

23−

2419type TransGraphExtendTupleExpr = ExtendTupleExprBase TransactionIdLookup

2520

26−instance Binary TransGraphExtendTupleExpr

27−

2821type TransGraphTupleExpr = TupleExprBase TransactionIdLookup

2922

30−instance Binary TransGraphTupleExpr

31−

3223type TransGraphTupleExprs = TupleExprsBase TransactionIdLookup

3324

34−instance Binary TransGraphTupleExprs

35−

3625type TransGraphRestrictionPredicateExpr = RestrictionPredicateExprBase TransactionIdLookup

3726

38−instance Binary TransGraphRestrictionPredicateExpr

39−

4027type TransGraphAtomExpr = AtomExprBase TransactionIdLookup

4128

42−instance Binary TransGraphAtomExpr

43−

4429type TransGraphAttributeExpr = AttributeExprBase TransactionIdLookup

4530

4631type TransGraphWithNameExpr = WithNameExprBase TransactionIdLookup

4732

48−instance Binary TransGraphWithNameExpr

49−

5033newtype TransGraphEvalEnv = TransGraphEvalEnv {

5134 tge_graph :: TransactionGraph

5235 }

src/lib/ProjectM36/Transaction/Persist.hs+16−16

@@ -8,13 +8,13 @@ import ProjectM36.AtomFunction

88import ProjectM36.Persist (writeBSFileSync, DiskSync, renameSync)

99import qualified Data.Map as M

1010import qualified Data.HashSet as HS

11−import qualified Data.Binary as B

1211import System.FilePath

1312import System.Directory

1413import qualified Data.Text as T

1514import Control.Monad

1615import ProjectM36.ScriptSession

1716import ProjectM36.AtomFunctions.Basic (precompiledAtomFunctions)

17+import Codec.Winery

1818

1919#ifdef PM36_HASKELL_SCRIPTING

2020import GHC

@@ -62,7 +62,7 @@ readTransaction dbdir transId mScriptSession = do

6262 return $ Left $ MissingTransactionError transId

6363 else do

6464 relvars <- readRelVars transDir

65− transInfo <- B.decodeFile (transactionInfoPath transDir)

65+ transInfo <- readFileDeserialise (transactionInfoPath transDir)

6666 incDeps <- readIncDeps transDir

6767 typeCons <- readTypeConstructorMapping transDir

6868 sschemas <- readSubschemas transDir

@@ -92,28 +92,28 @@ writeTransaction sync dbdir trans = do

9292 writeDBCFuncs sync tempTransDir (dbcFunctions context)

9393 writeTypeConstructorMapping sync tempTransDir (typeConstructorMapping context)

9494 writeSubschemas sync tempTransDir (subschemas trans)

95− B.encodeFile (transactionInfoPath tempTransDir) (transactionInfo trans)

95+ writeFileSerialise (transactionInfoPath tempTransDir) (transactionInfo trans)

9696 --move the temp directory to final location

9797 renameSync sync tempTransDir finalTransDir

9898

9999writeRelVars :: DiskSync -> FilePath -> RelationVariables -> IO ()

100100writeRelVars sync transDir relvars = do

101101 let path = relvarsPath transDir

102− writeBSFileSync sync path (B.encode relvars)

102+ writeBSFileSync sync path (serialise relvars)

103103

104104readRelVars :: FilePath -> IO RelationVariables

105105readRelVars transDir =

106− B.decodeFile (relvarsPath transDir)

106+ readFileDeserialise (relvarsPath transDir)

107107

108108writeAtomFuncs :: DiskSync -> FilePath -> AtomFunctions -> IO ()

109109writeAtomFuncs sync transDir funcs = do

110110 let atomFuncPath = atomFuncsPath transDir

111− writeBSFileSync sync atomFuncPath (B.encode $ map (\f -> (atomFuncType f, atomFuncName f, atomFunctionScript f)) (HS.toList funcs))

111+ writeBSFileSync sync atomFuncPath (serialise $ map (\f -> (atomFuncType f, atomFuncName f, atomFunctionScript f)) (HS.toList funcs))

112112

113113--all the atom functions are in one file

114114readAtomFuncs :: FilePath -> Maybe ScriptSession -> IO AtomFunctions

115115readAtomFuncs transDir mScriptSession = do

116− atomFuncsList <- B.decodeFile (atomFuncsPath transDir)

116+ atomFuncsList <- readFileDeserialise (atomFuncsPath transDir)

117117 --only Haskell script functions can be serialized

118118 --we always return the pre-compiled functions

119119 funcs <- mapM (\(funcType, funcName, mFuncScript) -> loadAtomFunc precompiledAtomFunctions mScriptSession funcName funcType mFuncScript) atomFuncsList

@@ -153,7 +153,7 @@ readAtomFunc _ _ _ _ = error "Haskell scripting is disabled"

153153#else

154154readAtomFunc transDir funcName mScriptSession precompiledFuncs = do

155155 let atomFuncPath = atomFuncsPath transDir

156− (funcType, mFuncScript) <- B.decodeFile @([AtomType],Maybe T.Text) atomFuncPath

156+ (funcType, mFuncScript) <- readFileDeserialise @([AtomType],Maybe T.Text) atomFuncPath

157157 case mFuncScript of

158158 --handle pre-compiled case- pull it from the precompiled list

159159 Nothing -> case atomFunctionForName funcName precompiledFuncs of

@@ -184,7 +184,7 @@ writeDBCFuncs sync transDir funcs = mapM_ (writeDBCFunc sync transDir) (HS.toLis

184184writeDBCFunc :: DiskSync -> FilePath -> DatabaseContextFunction -> IO ()

185185writeDBCFunc sync transDir func = do

186186 let dbcFuncPath = dbcFuncsDir transDir </> T.unpack (dbcFuncName func)

187− writeBSFileSync sync dbcFuncPath (B.encode (dbcFuncType func, databaseContextFunctionScript func))

187+ writeBSFileSync sync dbcFuncPath (serialise (dbcFuncType func, databaseContextFunctionScript func))

188188

189189readDBCFuncs :: FilePath -> Maybe ScriptSession -> IO DatabaseContextFunctions

190190readDBCFuncs transDir mScriptSession = do

@@ -201,7 +201,7 @@ readDBCFunc transDir funcName _ precompiledFuncs = do

201201readDBCFunc transDir funcName mScriptSession precompiledFuncs = do

202202#endif

203203 let dbcFuncPath = dbcFuncsDir transDir </> T.unpack funcName

204− (_funcType, mFuncScript) <- B.decodeFile @([AtomType], Maybe T.Text) dbcFuncPath

204+ (_funcType, mFuncScript) <- readFileDeserialise @([AtomType], Maybe T.Text) dbcFuncPath

205205 case mFuncScript of

206206 Nothing -> case databaseContextFunctionForName funcName precompiledFuncs of

207207 Left _ -> error ("expected precompiled dbc function: " ++ T.unpack funcName)

@@ -225,7 +225,7 @@ readDBCFunc transDir funcName mScriptSession precompiledFuncs = do

225225

226226writeIncDep :: DiskSync -> FilePath -> (IncDepName, InclusionDependency) -> IO ()

227227writeIncDep sync transDir (incDepName, incDep) =

228− writeBSFileSync sync (incDepsDir transDir </> T.unpack incDepName) $ B.encode incDep

228+ writeBSFileSync sync (incDepsDir transDir </> T.unpack incDepName) $ serialise incDep

229229

230230writeIncDeps :: DiskSync -> FilePath -> M.Map IncDepName InclusionDependency -> IO ()

231231writeIncDeps sync transDir incdeps = mapM_ (writeIncDep sync transDir) $ M.toList incdeps

@@ -233,7 +233,7 @@ writeIncDeps sync transDir incdeps = mapM_ (writeIncDep sync transDir) $ M.toLis

233233readIncDep :: FilePath -> IncDepName -> IO (IncDepName, InclusionDependency)

234234readIncDep transDir incdepName = do

235235 let incDepPath = incDepsDir transDir </> T.unpack incdepName

236− incDepData <- B.decodeFile incDepPath

236+ incDepData <- readFileDeserialise incDepPath

237237 pure (incdepName, incDepData)

238238

239239readIncDeps :: FilePath -> IO (M.Map IncDepName InclusionDependency)

@@ -245,20 +245,20 @@ readIncDeps transDir = do

245245readSubschemas :: FilePath -> IO Subschemas

246246readSubschemas transDir = do

247247 let sschemasPath = subschemasPath transDir

248− B.decodeFile sschemasPath

248+ readFileDeserialise sschemasPath

249249

250250writeSubschemas :: DiskSync -> FilePath -> Subschemas -> IO ()

251251writeSubschemas sync transDir sschemas = do

252252 let sschemasPath = subschemasPath transDir

253− writeBSFileSync sync sschemasPath (B.encode sschemas)

253+ writeBSFileSync sync sschemasPath (serialise sschemas)

254254

255255writeTypeConstructorMapping :: DiskSync -> FilePath -> TypeConstructorMapping -> IO ()

256256writeTypeConstructorMapping sync path types = let atPath = typeConsPath path in

257− writeBSFileSync sync atPath $ B.encode types

257+ writeBSFileSync sync atPath $ serialise types

258258

259259readTypeConstructorMapping :: FilePath -> IO TypeConstructorMapping

260260readTypeConstructorMapping path = do

261261 let atPath = typeConsPath path

262− B.decodeFile atPath

262+ readFileDeserialise atPath

263263

264264

src/lib/ProjectM36/TransactionGraph.hs+15−13

@@ -1,4 +1,4 @@

1−{-# LANGUAGE DeriveAnyClass, DeriveGeneric, CPP, FlexibleContexts #-}

1+{-# LANGUAGE DeriveGeneric, CPP, FlexibleContexts, DerivingVia #-}

22module ProjectM36.TransactionGraph where

33import ProjectM36.Base

44import ProjectM36.Error

@@ -13,6 +13,7 @@ import ProjectM36.MerkleHash

1313import qualified ProjectM36.DisconnectedTransaction as Discon

1414import qualified ProjectM36.Attribute as A

1515

16+import Codec.Winery

1617import Control.Monad.Except hiding (join)

1718import Control.Monad.Reader hiding (join)

1819import qualified Data.Vector as V

@@ -23,7 +24,6 @@ import qualified Data.List.NonEmpty as NE

2324import Data.Time.Clock

2425import qualified Data.Text as T

2526import GHC.Generics

26−import Data.Binary as B

2727import Data.Either (lefts, rights, isRight)

2828#if __GLASGOW_HASKELL__ < 804

2929import Data.Monoid

@@ -38,13 +38,15 @@ import Crypto.Hash.SHA256

3838-- | Record a lookup for a specific transaction in the graph.

3939data TransactionIdLookup = TransactionIdLookup TransactionId |

4040 TransactionIdHeadNameLookup HeadName [TransactionIdHeadBacktrack]

41− deriving (Show, Eq, Binary, Generic)

41+ deriving (Show, Eq, Generic)

42+ deriving Serialise via WineryVariant TransactionIdLookup

4243

4344-- | Used for git-style head backtracking such as topic~3^2.

44−data TransactionIdHeadBacktrack = TransactionIdHeadParentBacktrack Int | -- ^ git equivalent of ~: walk back n parents, arbitrarily choosing a parent when a choice must be made

45+data TransactionIdHeadBacktrack = TransactionIdHeadParentBacktrack Int | -- ^ git equivalent of ~v: walk back n parents, arbitrarily choosing a parent when a choice must be made

4546 TransactionIdHeadBranchBacktrack Int | -- ^ git equivalent of ^: walk back one parent level to the nth arbitrarily-chosen parent

4647 TransactionStampHeadBacktrack UTCTime -- ^ git equivalent of 'git-rev-list -n 1 --before X' find the first transaction which was created before the timestamp

47− deriving (Show, Eq, Binary, Generic)

48+ deriving (Show, Eq, Generic)

49+ deriving Serialise via WineryVariant TransactionIdHeadBacktrack

4850

4951

5052-- | Operators which manipulate a transaction graph and which transaction the current 'Session' is based upon.

@@ -56,7 +58,8 @@ data TransactionGraphOperator = JumpToHead HeadName |

5658 MergeTransactions MergeStrategy HeadName HeadName |

5759 Commit |

5860 Rollback

59− deriving (Eq, Show, Binary, Generic)

61+ deriving (Eq, Show, Generic)

62+ deriving Serialise via WineryVariant TransactionGraphOperator

6063

6164isCommit :: TransactionGraphOperator -> Bool

6265isCommit Commit = True

@@ -381,7 +384,7 @@ subGraphOfFirstCommonAncestor origGraph resultHeads currentTrans' goalTrans trav

381384 else do

382385 currentTransChildren <- childTransactions currentTrans' origGraph

383386 let searchChildren = S.difference (S.insert currentTrans' traverseSet) currentTransChildren

384− searchChild start = pathToTransaction origGraph start goalTrans (S.insert currentTrans' traverseSet)

387+ searchChild start' = pathToTransaction origGraph start' goalTrans (S.insert currentTrans' traverseSet)

385388 childSearches = map searchChild (S.toList searchChildren)

386389 errors = lefts childSearches

387390 pathsFound = rights childSearches

@@ -593,10 +596,9 @@ addMerkleHash graph trans = Transaction (transactionId trans) newInfo (schemas t

593596

594597-- the new hash includes the parents' ids, the current id, and the hash of the context, and the merkle hashes of the parent transactions

595598calculateMerkleHash :: Transaction -> TransactionGraph -> MerkleHash

596−calculateMerkleHash trans graph = MerkleHash $ hashlazy (mconcat [transIds,

597− dbcBytes,

598− schemasBytes,

599− parentMerkleHashes])

599+calculateMerkleHash trans graph = MerkleHash $ hashlazy (BL.fromChunks [transIds,

600+ schemasBytes

601+ ] <> dbcBytes <> parentMerkleHashes)

600602 where

601603 parentMerkleHashes = BL.fromChunks $ map (_unMerkleHash . getMerkleHash) parentTranses

602604 parentTranses =

@@ -605,9 +607,9 @@ calculateMerkleHash trans graph = MerkleHash $ hashlazy (mconcat [transIds,

605607 Left e -> error ("failed to find transaction in Merkle hash construction: " ++ show e)

606608 Right t -> S.toList t

607609 getMerkleHash t = merkleHash (transactionInfo t)

608− transIds = B.encode (transactionId trans : S.toList (parentIds trans))

610+ transIds = serialise (transactionId trans : S.toList (parentIds trans))

609611 dbcBytes = DBC.hashBytes (concreteDatabaseContext trans)

610− schemasBytes = B.encode (subschemas trans)

612+ schemasBytes = serialise (subschemas trans)

611613

612614validateMerkleHash :: Transaction -> TransactionGraph -> Either MerkleValidationError ()

613615validateMerkleHash trans graph =

src/lib/ProjectM36/Tuple.hs+47−33

@@ -1,7 +1,7 @@

11module ProjectM36.Tuple where

22import ProjectM36.Base

33import ProjectM36.Error

4−import ProjectM36.Attribute

4+import ProjectM36.Attribute as A

55import ProjectM36.Atom

66import ProjectM36.AtomType

77import ProjectM36.DataTypes.Primitive

@@ -15,19 +15,19 @@ import Control.Arrow

1515import Data.Maybe

1616

1717emptyTuple :: RelationTuple

18−emptyTuple = RelationTuple V.empty V.empty

18+emptyTuple = RelationTuple mempty mempty

1919

2020tupleSize :: RelationTuple -> Int

21−tupleSize (RelationTuple tupAttrs _) = V.length tupAttrs

21+tupleSize (RelationTuple tupAttrs _) = arity tupAttrs

2222

2323tupleAttributeNameSet :: RelationTuple -> S.Set AttributeName

24−tupleAttributeNameSet (RelationTuple tupAttrs _) = S.fromList $ V.toList $ V.map attributeName tupAttrs

24+tupleAttributeNameSet (RelationTuple tupAttrs _) = attributeNameSet tupAttrs

2525

2626tupleAttributes :: RelationTuple -> Attributes

2727tupleAttributes (RelationTuple tupAttrs _) = tupAttrs

2828

2929tupleAssocs :: RelationTuple -> [(AttributeName, Atom)]

30−tupleAssocs (RelationTuple attrVec tupVec) = V.toList $ V.map (first attributeName) (V.zip attrVec tupVec)

30+tupleAssocs (RelationTuple attrs tupVec) = V.toList $ V.map (first attributeName) (V.zip (attributesVec attrs) tupVec)

3131

3232orderedTupleAssocs :: RelationTuple -> [(AttributeName, Atom)]

3333orderedTupleAssocs tup@(RelationTuple attrVec _) = map (\attr -> (attributeName attr, atomForAttr (attributeName attr))) oAttrs

@@ -42,7 +42,7 @@ tupleAtoms :: RelationTuple -> V.Vector Atom

4242tupleAtoms (RelationTuple _ tupVec) = tupVec

4343

4444atomForAttributeName :: AttributeName -> RelationTuple -> Either RelationalError Atom

45−atomForAttributeName attrName (RelationTuple tupAttrs tupVec) = case V.findIndex (\attr -> attributeName attr == attrName) tupAttrs of

45+atomForAttributeName attrName (RelationTuple tupAttrs tupVec) = case V.findIndex (\attr -> attributeName attr == attrName) (attributesVec tupAttrs) of

4646 Nothing -> Left (NoSuchAttributeNamesError (S.singleton attrName))

4747 Just index -> case tupVec V.!? index of

4848 Nothing -> Left (NoSuchAttributeNamesError (S.singleton attrName))

@@ -59,7 +59,7 @@ vectorIndicesForAttributeNames attrNameVec attrs = if not $ V.null unknownAttrNa

5959 Right $ V.map mapper attrNameVec

6060 where

6161 unknownAttrNames = V.filter (`V.notElem` attributeNames attrs) attrNameVec

62− mapper attrName = fromMaybe (error "logic failure in vectorIndicesForAttributeNames") (V.elemIndex attrName (V.map attributeName attrs))

62+ mapper attrName = fromMaybe (error "logic failure in vectorIndicesForAttributeNames") (V.elemIndex attrName (attributeNames attrs))

6363

6464

6565relationForAttributeName :: AttributeName -> RelationTuple -> Either RelationalError Relation

@@ -86,10 +86,10 @@ mkRelationTuples attrs = map mapper

8686 mapper = mkRelationTuple attrs

8787

8888mkRelationTupleFromMap :: M.Map AttributeName Atom -> RelationTuple

89−mkRelationTupleFromMap attrMap = RelationTuple attrs (V.map (attrMap M.!) attrNames)

89+mkRelationTupleFromMap attrMap = RelationTuple (attributesFromList attrs) (V.map (attrMap M.!) (V.fromList attrNames))

9090 where

91− attrNames = V.fromList (M.keys attrMap)

92− attrs = V.map (\attrName -> Attribute attrName (atomTypeForAtom (attrMap M.! attrName))) attrNames

91+ attrNames = M.keys attrMap

92+ attrs = map (\attrName -> Attribute attrName (atomTypeForAtom (attrMap M.! attrName))) attrNames

9393

9494--return error if attribute names match but their types do not

9595singleTupleSetJoin :: Attributes -> RelationTuple -> RelationTupleSet -> Either RelationalError [RelationTuple]

@@ -120,8 +120,8 @@ singleTupleJoin joinedAttrs tup1@(RelationTuple tupAttrs1 _) tup2@(RelationTuple

120120 return $ Just $ RelationTuple joinedAttrs newVec

121121 where

122122 keysIntersection = V.map attributeName attrsIntersection

123− attrsIntersection = V.filter (`V.elem` tupAttrs1) tupAttrs2

124− newVec = V.map (findAtomForAttributeName . attributeName) joinedAttrs

123+ attrsIntersection = V.filter (`V.elem` attributesVec tupAttrs1) (attributesVec tupAttrs2)

124+ newVec = V.map (findAtomForAttributeName . attributeName) (attributesVec joinedAttrs)

125125 --search both tuples for the attribute

126126 findAtomForAttributeName attrName = head $ rights $ fmap (atomForAttributeName attrName) [tup1, tup2]

127127

@@ -138,23 +138,31 @@ vectorUnion v1 v2 = V.foldr folder v1 v2

138138tupleExtend :: RelationTuple -> RelationTuple -> RelationTuple

139139tupleExtend (RelationTuple tupAttrs1 tupVec1) (RelationTuple tupAttrs2 tupVec2) = RelationTuple newAttrs newVec

140140 where

141− newAttrs = tupAttrs1 V.++ tupAttrs2

142− newVec = tupVec1 V.++ tupVec2

141+ newAttrs = tupAttrs1 <> tupAttrs2

142+ newVec = tupVec1 <> tupVec2

143143

144144tupleAtomExtend :: AttributeName -> Atom -> RelationTuple -> RelationTuple

145145tupleAtomExtend newAttrName atom tupIn = tupleExtend tupIn newTup

146146 where

147− newTup = RelationTuple (V.singleton $ Attribute newAttrName (atomTypeForAtom atom)) (V.singleton atom)

147+ newTup = RelationTuple (A.singleton $ Attribute newAttrName (atomTypeForAtom atom)) (V.singleton atom)

148148

149−--this could be cheaper- it may not be wortwhile to update all the tuples for projection, but then the attribute management must be slightly different- perhaps the attributes should be a vector of association tuples [(name, index)]

150−tupleProject :: S.Set AttributeName -> RelationTuple -> RelationTuple

149+{-tupleProject :: S.Set AttributeName -> RelationTuple -> RelationTuple

151150tupleProject projectAttrs (RelationTuple attrs tupVec) = RelationTuple newAttrs newTupVec

152151 where

153− deleteIndices = V.findIndices (\attr -> S.notMember (attributeName attr) projectAttrs) attrs

152+ deleteIndices = V.findIndices (\attr -> S.notMember (attributeName attr) projectAttrs) (attributesVec attrs)

154153 indexDeleter = V.ifilter (\index _ -> V.notElem index deleteIndices)

155− newAttrs = indexDeleter attrs

154+ newAttrs = case A.projectionAttributesForNames projectAttrs attrs of

155+ Left err -> error (show (err, projectAttrs, attrs))

156+ Right attrs' -> attrs'

156157 newTupVec = indexDeleter tupVec

157−

158+-}

159+-- remember that the attributes order matters

160+tupleProject :: Attributes -> RelationTuple -> Either RelationalError RelationTuple

161+tupleProject projectAttrs tup = do

162+ newTupVec <- foldM (\acc attr ->

163+ V.snoc acc <$> atomForAttributeName (attributeName attr) tup

164+ ) V.empty (attributesVec projectAttrs)

165+ pure $ reorderTuple projectAttrs (RelationTuple projectAttrs newTupVec)

158166--return the attributes and atoms which are equal in both vectors

159167--semi-join

160168tupleIntersection :: RelationTuple -> RelationTuple -> RelationTuple

@@ -162,12 +170,14 @@ tupleIntersection tuple1 tuple2 = RelationTuple newAttrs newTupVec

162170 where

163171 attrs1 = tupleAttributes tuple1

164172 attrs2 = tupleAttributes tuple2

165− matchingIndices = V.findIndices (\attr -> V.elem attr attrs2 &&

166− atomForAttributeName (attributeName attr) tuple1 ==

167− atomForAttributeName (attributeName attr) tuple2

168− ) attrs1

173+ intersectAttrs = A.intersection attrs1 attrs2

174+ matchingIndices = V.findIndices (\attr -> A.member attr intersectAttrs &&

175+ atomForAttributeName (attributeName attr) tuple1 ==

176+ atomForAttributeName (attributeName attr) tuple2) (attributesVec attrs1)

169177 indexFilter = V.ifilter (\index _ -> V.elem index matchingIndices)

170− newAttrs = indexFilter attrs1

178+ newAttrs = case A.projectionAttributesForNames (A.attributeNameSet intersectAttrs) attrs1 of

179+ Left _ -> mempty

180+ Right attrs' -> attrs'

171181 newTupVec = indexFilter (tupleAtoms tuple1)

172182

173183-- | An optimized form of tuple update which updates vectors efficiently.

@@ -175,19 +185,20 @@ updateTupleWithAtoms :: M.Map AttributeName Atom -> RelationTuple -> RelationTup

175185updateTupleWithAtoms updateMap (RelationTuple attrs tupVec) = RelationTuple attrs newVec

176186 where

177187 updateKeysSet = M.keysSet updateMap

178− updateKeysIVec = V.filter (\(_,attr) -> S.member (attributeName attr) updateKeysSet) (V.indexed attrs)

188+ updateKeysIVec = V.filter (\(_,attr) -> S.member (attributeName attr) updateKeysSet) (V.indexed (attributesVec attrs))

179189 newVec = V.update tupVec updateVec

180190 updateVec = V.map (\(index, attr) -> (index, updateMap M.! attributeName attr)) updateKeysIVec

181191

182192tupleToMap :: RelationTuple -> M.Map AttributeName Atom

183193tupleToMap (RelationTuple attrs tupVec) = M.fromList assocList

184194 where

185− assocList = V.toList $ V.map (\(index, attr) -> (attributeName attr, tupVec V.! index)) (V.indexed attrs)

195+ assocList = V.toList $ V.map (\(index, attr) -> (attributeName attr, tupVec V.! index)) (V.indexed (attributesVec attrs))

186196

197+-- | Validate that the tuple has the correct attributes in the correct order

187198verifyTuple :: Attributes -> RelationTuple -> Either RelationalError RelationTuple

188−verifyTuple attrs tuple = let attrsTypes = V.map atomType attrs

199+verifyTuple attrs tuple = let attrsTypes = A.atomTypes attrs

189200 tupleTypes = V.map atomTypeForAtom (tupleAtoms tuple) in

190− if V.length attrs /= V.length tupleTypes then

201+ if A.arity attrs /= V.length tupleTypes then

191202 Left $ TupleAttributeCountMismatchError 0

192203 else do

193204 mapM_ (uncurry atomTypeVerify) (V.zip attrsTypes tupleTypes)

@@ -196,15 +207,18 @@ verifyTuple attrs tuple = let attrsTypes = V.map atomType attrs

196207--two tuples can be equal but the vectors of attributes could be out-of-order

197208--reorder if necessary- this is useful during relMogrify so that all the relation's tuples have identical atom/attribute ordering

198209reorderTuple :: Attributes -> RelationTuple -> RelationTuple

199−reorderTuple attrs tupIn = if tupleAttributes tupIn == attrs then

210+reorderTuple attrs tupIn = if attributesAndOrderEqual (tupleAttributes tupIn) attrs then

200211 tupIn

201212 else

202− RelationTuple attrs (V.map mapper attrs)

213+ RelationTuple attrs (V.map mapper (attributesVec attrs))

203214 where

204215 mapper attr = case atomForAttributeName (attributeName attr) tupIn of

205− Left err -> error ("logic bug in reorderTuple: " ++ show err)

216+ Left err -> error ("logic bug in reorderTuple: " ++ show err <> show tupIn)

206217 Right atom -> atom

207218

208219--used in Generics derivation for ADTs without named attributes

209220trimTuple :: Int -> RelationTuple -> RelationTuple

210−trimTuple index (RelationTuple attrs vals) = RelationTuple (V.drop index attrs) (V.drop index vals)

221+trimTuple index (RelationTuple attrs vals) =

222+ RelationTuple newAttrs (V.drop index vals)

223+ where

224+ newAttrs = A.drop index attrs

src/lib/ProjectM36/TupleSet.hs+7

@@ -31,3 +31,10 @@ mkTupleSet attrs tuples = verifyTupleSet attrs (RelationTupleSet tuples)

3131

3232mkTupleSetFromList :: Attributes -> [[Atom]] -> Either RelationalError RelationTupleSet

3333mkTupleSetFromList attrs atomMatrix = mkTupleSet attrs $ map (mkRelationTuple attrs . V.fromList) atomMatrix

34+

35+

36+-- | Union two tuplesets while reordering their attribute/atom mapping properly.

37+tupleSetUnion :: Attributes -> RelationTupleSet -> RelationTupleSet -> RelationTupleSet

38+tupleSetUnion targetAttrs tupSet1 tupSet2 = RelationTupleSet $ HS.toList . HS.fromList $ reorder (asList tupSet1) ++ reorder (asList tupSet2)

39+ where

40+ reorder = map (reorderTuple targetAttrs)

src/lib/ProjectM36/Tupleable.hs+9−8

@@ -38,7 +38,7 @@ import qualified Data.Text as T

3838import qualified Data.Vector as V

3939import GHC.Generics

4040import ProjectM36.Atomable

41−import ProjectM36.Attribute hiding (null)

41+import ProjectM36.Attribute as A hiding (null, toList)

4242import ProjectM36.Base

4343import ProjectM36.DataTypes.Primitive

4444import ProjectM36.Error

@@ -89,7 +89,7 @@ toInsertExpr vals rvName = do

8989

9090-- | Convert a 'Tupleable' to a create a 'Define' expression which can be used to create an empty relation variable. Use 'toInsertExpr' to insert the actual tuple data. This function is typically used with 'Data.Proxy'.

9191toDefineExpr :: forall a proxy. Tupleable a => proxy a -> RelVarName -> DatabaseContextExpr

92−toDefineExpr _ rvName = Define rvName (map NakedAttributeExpr (V.toList attrs))

92+toDefineExpr _ rvName = Define rvName (map NakedAttributeExpr (V.toList (attributesVec attrs)))

9393 where

9494 attrs = toAttributes (Proxy :: Proxy a)

9595

@@ -228,11 +228,12 @@ instance (Constructor c, TupleableG a, AtomableG a) => TupleableG (M1 C c a) whe

228228 toTupleG opts (M1 v) = RelationTuple attrs atoms

229229 where

230230 attrsToCheck = toAttributesG opts v

231− counter = V.generate (V.length attrsToCheck) id

232− attrs = V.zipWith (\num attr@(Attribute name typ) -> if T.null name then

231+ counter = V.generate (arity attrsToCheck) id

232+ attrs = attributesFromList (V.toList attrsV)

233+ attrsV = V.zipWith (\num attr@(Attribute name typ) -> if T.null name then

233234 Attribute ("attr" <> T.pack (show (num + 1))) typ

234235 else

235− attr) counter attrsToCheck

236+ attr) counter (attributesVec attrsToCheck)

236237 atoms = V.fromList (toAtomsG v)

237238 toAttributesG opts (M1 v) = toAttributesG opts v

238239 fromTupleG opts tup = M1 <$> fromTupleG opts tup

@@ -241,7 +242,7 @@ instance (Constructor c, TupleableG a, AtomableG a) => TupleableG (M1 C c a) whe

241242-- product types

242243instance (TupleableG a, TupleableG b) => TupleableG (a :*: b) where

243244 toTupleG = error "toTupleG"

244− toAttributesG opts ~(x :*: y) = toAttributesG opts x V.++ toAttributesG opts y --a bit of extra laziness prevents whnf so that we can use toAttributes (undefined :: Test2T Int Int) without throwing an exception

245+ toAttributesG opts ~(x :*: y) = toAttributesG opts x <> toAttributesG opts y --a bit of extra laziness prevents whnf so that we can use toAttributes (undefined :: Test2T Int Int) without throwing an exception

245246 fromTupleG opts tup = (:*:) <$> fromTupleG opts tup <*> fromTupleG opts processedTuple

246247 where

247248 processedTuple = if isRecordTypeG (undefined :: a x) then

@@ -253,7 +254,7 @@ instance (TupleableG a, TupleableG b) => TupleableG (a :*: b) where

253254--selector/record

254255instance (Selector c, AtomableG a) => TupleableG (M1 S c a) where

255256 toTupleG = error "toTupleG"

256− toAttributesG opts m@(M1 v) = V.singleton (Attribute modifiedName aType)

257+ toAttributesG opts m@(M1 v) = A.singleton (Attribute modifiedName aType)

257258 where

258259 name = T.pack (selName m)

259260 modifiedName = if T.null name then

@@ -268,7 +269,7 @@ instance (Selector c, AtomableG a) => TupleableG (M1 S c a) where

268269 val <- atomv atom

269270 pure (M1 val)

270271 where

271− expectedAtomType = atomType (V.head (toAttributesG opts (undefined :: M1 S c a x)))

272+ expectedAtomType = atomType (V.head (attributesVec (toAttributesG opts (undefined :: M1 S c a x))))

272273 atomv atom = maybe (Left (AtomTypeMismatchError

273274 expectedAtomType

274275 (atomTypeForAtom atom)

src/lib/ProjectM36/Tupleable/Deriving.hs+2−2

@@ -52,15 +52,15 @@ module ProjectM36.Tupleable.Deriving

5252 , Generic

5353 , module ProjectM36.Tupleable

5454 ) where

55−

55+import Data.Maybe (fromMaybe)

5656import Data.Proxy

5757import qualified Data.Text as T

5858import Data.Text.Manipulate

59−import Data.Maybe

6059import GHC.TypeLits

6160import GHC.Generics (Generic, Rep)

6261import ProjectM36.Tupleable

6362

63+

6464-- | A newtype wrapper to allow for easier deriving of 'Tupleable' instances

6565-- with customization.

6666--

src/lib/ProjectM36/WithNameExpr.hs+4−2

@@ -42,9 +42,11 @@ substituteWithNameMacros macros (NotEquals exprA exprB) =

4242substituteWithNameMacros macros (Extend extendTup expr) =

4343 Extend (substituteWitNameMacrosExtendTupleExpr macros extendTup) (substituteWithNameMacros macros expr)

4444substituteWithNameMacros macros (With moreMacros expr) =

45− --collect and override existing macros and recurse

45+ --collect and update nested with exprs

4646 let newMacros = foldr macroFolder macros moreMacros

47− macroFolder (wnexpr, mexpr) acc = filter (\(w,_) -> w /= wnexpr) acc ++ [(wnexpr, mexpr)] in

47+ macroFolder (wnexpr, mexpr) acc =

48+ let subExpr = substituteWithNameMacros macros mexpr in

49+ filter (\(w,_) -> w /= wnexpr) acc ++ [(wnexpr, subExpr)] in

4850 --scan for a match- if it exists, replace it (representing a with clause at a lower level

4951 substituteWithNameMacros newMacros expr

5052

stack.ghc8.0.yamldeleted−50

@@ -1,50 +0,0 @@

1−# This file was automatically generated by stack init

2−# For more information, see: http://docs.haskellstack.org/en/stable/yaml_configuration/

3−

4−# Specifies the GHC version and set of packages available (e.g., lts-3.5, nightly-2015-09-21, ghc-7.10.2)

5−resolver: lts-8.5

6−

7−# Local packages, usually specified by relative directory name

8−packages:

9−- '.'

10−# Packages to be pulled from upstream that are not in the resolver (e.g., acme-missiles-0.3)

11−extra-deps:

12−- data-accessor-transformers-0.2.1.7

13−- data-interval-1.2.0

14−- extended-reals-0.2.1.0

15−- gnuplot-0.5.4.1

16−- text-1.2.2.1

17−- aeson-1.2.1.00

18−- distributed-process-0.6.6

19−- distributed-process-async-0.2.4

20−- distributed-process-client-server-0.2.3

21−- distributed-process-extras-0.3.2

22−- deferred-folds-0.6.12

23−- rset-1.0.0

24−

25−# Override default flag values for local packages and extra-deps

26−flags: {}

27−

28−# Extra package databases containing global packages

29−extra-package-dbs: []

30−

31−# Control whether we use the GHC we find on the path

32−# system-ghc: true

33−

34−# Require a specific version of stack, using version ranges

35−# require-stack-version: -any # Default

36−# require-stack-version: >= 1.0.0

37−

38−# Override the architecture used by stack, especially useful on Windows

39−# arch: i386

40−# arch: x86_64

41−

42−# Extra directories used by stack for building

43−# extra-include-dirs: [/path/to/dir]

44−# extra-lib-dirs: [/path/to/dir]

45−

46−# Allow a newer minor version of GHC than the snapshot specifies

47−# compiler-check: newer-minor

48−

49−allow-newer: true

50−

stack.ghc8.10.yamlnew file+19

@@ -0,0 +1,19 @@

1+resolver: lts-17.13

2+packages:

3+ - "."

5+extra-deps:

6+ - git: https://github.com/agentm/curryer.git

7+ commit: 74ecaac619ad1165a4517d5c0f4e530493bda130

8+ - git: https://github.com/composewell/streamly.git

9+ commit: ac3af8749194f1788704dda8667d0b3807075cc2

10+ - fast-builder-0.1.2.1

11+ - rset-1.0.0

12+ - winery-1.3.2

13+ - barbies-th-0.1.8

14+ - base16-bytestring-1.0.1.0

15+

16+flags:

17+ project-m36:

18+ stack: true

19+# allow-newer: true

stack.ghc8.2.yamldeleted−51

@@ -1,51 +0,0 @@

1−# This file was automatically generated by stack init

2−# For more information, see: http://docs.haskellstack.org/en/stable/yaml_configuration/

3−

4−# Specifies the GHC version and set of packages available (e.g., lts-3.5, nightly-2015-09-21, ghc-7.10.2)

5−resolver: lts-11.20

6−

7−# Local packages, usually specified by relative directory name

8−packages:

9−- '.'

10−# Packages to be pulled from upstream that are not in the resolver (e.g., acme-missiles-0.3)

11−extra-deps:

12−- data-accessor-transformers-0.2.1.7

13−- data-interval-1.2.0

14−- extended-reals-0.2.1.0

15−- gnuplot-0.5.4.1

16−- text-1.2.2.1

17−- aeson-1.2.1.00

18−- distributed-process-0.7.3

19−- distributed-process-async-0.2.4.1

20−- distributed-process-client-server-0.2.3

21−- distributed-process-extras-0.3.2

22−- rset-1.0.0

23−

24−# Override default flag values for local packages and extra-deps

25−flags:

26− project-m36:

27− stack: true

28−

29−# Extra package databases containing global packages

30−extra-package-dbs: []

31−

32−# Control whether we use the GHC we find on the path

33−# system-ghc: true

34−

35−# Require a specific version of stack, using version ranges

36−# require-stack-version: -any # Default

37−# require-stack-version: >= 1.0.0

38−

39−# Override the architecture used by stack, especially useful on Windows

40−# arch: i386

41−# arch: x86_64

42−

43−# Extra directories used by stack for building

44−# extra-include-dirs: [/path/to/dir]

45−# extra-lib-dirs: [/path/to/dir]

46−

47−# Allow a newer minor version of GHC than the snapshot specifies

48−# compiler-check: newer-minor

49−

50−allow-newer: true

51−

stack.ghc8.4.yamldeleted−48

@@ -1,48 +0,0 @@

1−# This file was automatically generated by stack init

2−# For more information, see: http://docs.haskellstack.org/en/stable/yaml_configuration/

3−

4−# Specifies the GHC version and set of packages available (e.g., lts-3.5, nightly-2015-09-21, ghc-7.10.2)

5−resolver: lts-12.26

6−

7−# Local packages, usually specified by relative directory name

8−packages:

9−- '.'

10−# Packages to be pulled from upstream that are not in the resolver (e.g., acme-missiles-0.3)

11−extra-deps:

12−- data-interval-1.3.0

13−- extended-reals-0.2.3.0

14−- distributed-process-0.7.4

15−- distributed-process-async-0.2.6

16−- distributed-process-client-server-0.2.5.1

17−- distributed-process-extras-0.3.5

18−- rset-1.0.0

19−- hashable-time-0.2.0.2

20−- network-transport-tcp-0.6.0

21−

22−# Override default flag values for local packages and extra-deps

23−flags:

24− project-m36:

25− stack: true

26−

27−# Extra package databases containing global packages

28−extra-package-dbs: []

29−

30−# Control whether we use the GHC we find on the path

31−# system-ghc: true

32−

33−# Require a specific version of stack, using version ranges

34−# require-stack-version: -any # Default

35−# require-stack-version: >= 1.0.0

36−

37−# Override the architecture used by stack, especially useful on Windows

38−# arch: i386

39−# arch: x86_64

40−

41−# Extra directories used by stack for building

42−# extra-include-dirs: [/path/to/dir]

43−# extra-lib-dirs: [/path/to/dir]

44−

45−# Allow a newer minor version of GHC than the snapshot specifies

46−# compiler-check: newer-minor

47−

48−allow-newer: true

stack.ghc8.6.yaml+25−16

@@ -2,27 +2,36 @@

22# For more information, see: http://docs.haskellstack.org/en/stable/yaml_configuration/

44# Specifies the GHC version and set of packages available (e.g., lts-3.5, nightly-2015-09-21, ghc-7.10.2)

5−resolver: lts-14.3

5+resolver: lts-14.27

77# Local packages, usually specified by relative directory name

88packages:

9−- '.'

9+ - "."

1010# Packages to be pulled from upstream that are not in the resolver (e.g., acme-missiles-0.3)

1111extra-deps:

12−- git: https://github.com/haskell-distributed/distributed-process.git

13− commit: 660d554f6acd2dba8b605c84e8fa69e45708bc14

14−- extended-reals-0.2.3.0

15−- data-interval-2.0.1

16−- stm-containers-1.1.0.4

17−- distributed-static-0.3.9

18−- stm-hamt-1.2.0.4

19−- distributed-process-async-0.2.6

20−- distributed-process-client-server-0.2.5.1

21−- distributed-process-extras-0.3.5

22−- rset-1.0.0

23−- hashable-time-0.2.0.2

24−- network-transport-tcp-0.6.0

25−- megaparsec-7.0.5

12+ - git: https://github.com/agentm/curryer.git

13+ commit: 74ecaac619ad1165a4517d5c0f4e530493bda130

14+ - git: https://github.com/composewell/streamly.git

15+ commit: ac3af8749194f1788704dda8667d0b3807075cc2

16+ - fast-builder-0.1.2.1

17+ - winery-1.3.2

18+ - barbies-2.0.2.0

19+ - barbies-th-0.1.7

20+ - extended-reals-0.2.3.0

21+ - data-interval-2.0.1

22+ - stm-containers-1.1.0.4

23+ - stm-hamt-1.2.0.4

24+ - rset-1.0.0

25+ - hashable-time-0.2.0.2

26+ - network-transport-tcp-0.6.0

27+ - megaparsec-7.0.5

28+ - prettyprinter-1.7.0

29+ - prettyprinter-ansi-terminal-1.1.2

30+ - fusion-plugin-types-0.1.0

31+ - base16-bytestring-1.0.1.0

32+ - modern-uri-0.3.4.0

33+ - cryptohash-sha256-0.11.102.0

34+ - http-types-0.12.3

2635

2736# Override default flag values for local packages and extra-deps

2837flags:

stack.ghc8.8.yaml+25−17

@@ -2,28 +2,36 @@

22# For more information, see: http://docs.haskellstack.org/en/stable/yaml_configuration/

44# Specifies the GHC version and set of packages available (e.g., lts-3.5, nightly-2015-09-21, ghc-7.10.2)

5−resolver: lts-15.11

5+resolver: lts-16.4

77# Local packages, usually specified by relative directory name

88packages:

9−- '.'

9+ - "."

1010# Packages to be pulled from upstream that are not in the resolver (e.g., acme-missiles-0.3)

1111extra-deps:

12−- git: https://github.com/agentm/distributed-process.git

13− commit: 688a5b96d4b7b36d90c3db676230b2c943604288

14−- extended-reals-0.2.3.0

15−- data-interval-2.0.1

16−- stm-containers-1.1.0.4

17−- distributed-static-0.3.9

18−- stm-hamt-1.2.0.4

19−- distributed-process-async-0.2.6

20−- distributed-process-client-server-0.2.5.1

21−- distributed-process-extras-0.3.5

22−- rset-1.0.0

23−- hashable-time-0.2.0.2

24−- network-transport-tcp-0.7.0

25−- megaparsec-7.0.5

26−- network-2.8.0.1

12+ - git: https://github.com/agentm/curryer.git

13+ commit: 74ecaac619ad1165a4517d5c0f4e530493bda130

14+ - git: https://github.com/composewell/streamly.git

15+ commit: ac3af8749194f1788704dda8667d0b3807075cc2

16+ - fast-builder-0.1.2.1

17+ - winery-1.3.2

18+ - barbies-2.0.2.0

19+ - barbies-th-0.1.7

20+ - extended-reals-0.2.3.0

21+ - data-interval-2.0.1

22+ - stm-containers-1.1.0.4

23+ - stm-hamt-1.2.0.4

24+ - rset-1.0.0

25+ - hashable-time-0.2.0.2

26+ - network-transport-tcp-0.7.0

27+ - megaparsec-7.0.5

28+ - network-2.8.0.1

29+ - primitive-extras-0.8

30+ - primitive-unlifted-0.1.3.0

31+ - prettyprinter-1.7.0

32+ - prettyprinter-ansi-terminal-1.1.2

33+ - base16-bytestring-1.0.1.0

34+ - modern-uri-0.3.4.0

2735

2836# Override default flag values for local packages and extra-deps

2937flags:

test/Client/Simple.hs+1−2

@@ -9,7 +9,6 @@ import System.IO.Temp

99import System.FilePath

1010import ProjectM36.TupleSet

1111import ProjectM36.Attribute

12−import qualified Data.Vector as V

1312import qualified Data.Map as M

1413

1514main :: IO ()

@@ -59,7 +58,7 @@ testSimpleCommitFailure = TestCase $ do

5958 execute $ Assign "x" (ExistingRelation relationTrue)

6059 --cause error

6160 execute $ Assign "x" (MakeStaticRelation failAttrs emptyTupleSet)

62− let expectedErr = Left (RelError (RelationTypeMismatchError V.empty failAttrs))

61+ let expectedErr = Left (RelError (RelationTypeMismatchError mempty failAttrs))

6362 assertEqual "dbc error" expectedErr err

6463

6564-- #176 default merge couldn't handle Update

test/Relation/Atomable.hs+28−15

@@ -1,8 +1,7 @@

11--Test Atomable typeclass which allows users to use existing Haskell datatypes to marshal them to and from the database as ConstructedAtoms.

2−{-# LANGUAGE DeriveGeneric, DeriveAnyClass, OverloadedStrings, TypeApplications #-}

2+{-# LANGUAGE DeriveGeneric, DeriveAnyClass, OverloadedStrings, TypeApplications, DerivingVia #-}

33import Test.HUnit

44import ProjectM36.Client

5−import Data.Binary

65import Control.DeepSeq

76import System.Exit

87import TutorialD.Interpreter.TestBase

@@ -13,52 +12,65 @@ import Data.Time.Calendar (fromGregorian)

1312import Data.Text

1413import qualified Data.Map as M

1514import Data.Proxy

15+import Codec.Winery

1616

1717{-# ANN module ("Hlint: ignore Use newtype instead of data" :: String) #-}

1818data Test1T = Test1C Integer

19− deriving (Generic, Show, Eq, Binary, NFData, Atomable)

19+ deriving (Generic, Show, Eq, NFData, Atomable)

20+ deriving Serialise via WineryVariant Test1T

2021

2122data Test2T x = Test2C x

22− deriving (Show, Generic, Eq, Binary, NFData, Atomable)

23+ deriving (Show, Generic, Eq, NFData, Atomable)

24+ deriving Serialise via WineryVariant (Test2T x)

2325

2426data Test3T = Test3C Integer Integer

25− deriving (Show, Generic, Eq, Binary, NFData, Atomable)

27+ deriving (Show, Generic, Eq, NFData, Atomable)

28+ deriving Serialise via WineryVariant Test3T

2629

2730data Test4T = Test4Ca Integer |

2831 Test4Cb Integer

29− deriving (Show, Generic, Eq, Binary, NFData, Atomable)

32+ deriving (Show, Generic, Eq, NFData, Atomable)

33+ deriving Serialise via WineryVariant Test4T

3034

3135data TestListT = TestListC [Integer]

32− deriving (Show, Generic, Eq, Binary, NFData, Atomable)

36+ deriving (Show, Generic, Eq, NFData, Atomable)

37+ deriving Serialise via WineryVariant TestListT

3338

3439data TestNonEmptyT = TestNonEmptyC [Integer]

35− deriving (Show, Generic, Eq, Binary, NFData, Atomable)

40+ deriving (Show, Generic, Eq, NFData, Atomable)

41+ deriving Serialise via WineryVariant TestNonEmptyT

3642

3743data Test5T = Test5C {

3844 con1 :: Integer,

3945 con2 :: Integer

40− } deriving (Show, Generic, Eq, Binary, NFData, Atomable)

46+ } deriving (Show, Generic, Eq, NFData, Atomable)

47+ deriving Serialise via WineryRecord Test5T

4148

4249data Test6T = Test6C (Maybe Integer)

43− deriving (Show, Generic, Eq, Binary, NFData, Atomable)

50+ deriving (Show, Generic, Eq, NFData, Atomable)

51+ deriving Serialise via WineryVariant Test6T

4452

4553data Test7T = Test7C (Either Integer Integer)

46− deriving (Show, Generic, Eq, Binary, NFData, Atomable)

54+ deriving (Show, Generic, Eq, NFData, Atomable)

55+ deriving Serialise via WineryVariant Test7T

4756

4857data Test8T = Test8C Test1T

49− deriving (Show, Generic, Eq, Binary, NFData, Atomable)

58+ deriving (Show, Generic, Eq, NFData, Atomable)

59+ deriving Serialise via WineryVariant Test8T

5060

5161data User = User

5262 { userFirstName :: Text

5363 , userLastName :: Text

54− } deriving (Eq, Ord, Show, Generic, NFData, Binary, Atomable)

64+ } deriving (Eq, Ord, Show, Generic, NFData, Atomable)

65+ deriving Serialise via WineryRecord User

5566

5667data Test9_4T = Test9_4C {

5768 f9_41 :: Int,

5869 f9_42 :: Int,

5970 f9_43 :: Int,

6071 f9_44 :: Int }

61− deriving (Show, Generic, Eq, Binary, NFData, Atomable)

72+ deriving (Show, Generic, Eq, NFData, Atomable)

73+ deriving Serialise via WineryRecord Test9_4T

6274

6375data Test9_5T = Test9_5C {

6476 f9_51 :: Int,

@@ -67,7 +79,8 @@ data Test9_5T = Test9_5C {

6779 f9_54 :: Int,

6880 f9_55 :: Int

6981 }

70− deriving (Show, Generic, Eq, Binary, NFData, Atomable)

82+ deriving (Show, Generic, Eq, NFData, Atomable)

83+ deriving Serialise via WineryRecord Test9_5T

7184

7285main :: IO ()

7386main = do

test/Relation/Basic.hs+13−12

@@ -3,8 +3,6 @@ import ProjectM36.Base

33import ProjectM36.Relation

44import ProjectM36.Error

55import ProjectM36.DateExamples

6−import ProjectM36.TupleSet

7−import ProjectM36.Attribute hiding (null, attributeNames)

86import ProjectM36.DataTypes.Primitive

97import ProjectM36.RelationalExpression

108import ProjectM36.TransactionGraph

@@ -25,8 +23,8 @@ testList = TestList [testRelation "relationTrue" relationTrue, testRelation "rel

2523 testRelation "products" productsRel,

2624 testRelation "supplierProducts" supplierProductsRel,

2725 testMkRelationFromExprsBadAttrs,

28− testDuplicateAttributes,

29− testExistingRelationType

26+ testExistingRelationType,

27+ testReorderTuple

3028 ]

3129

3230main :: IO ()

@@ -65,7 +63,7 @@ validateAttrTypesMatchTupleAttrTypes rel@(Relation attrs tupSet) = foldr (\tuple

6563 attrChecks tuple = V.map (\attr -> case atomForAttributeName (A.attributeName attr) tuple of

6664 Left _ -> False

6765 Right atom -> Right (atomTypeForAtom atom) ==

68− A.atomTypeForAttributeName (A.attributeName attr) attrs) (attributes rel)

66+ A.atomTypeForAttributeName (A.attributeName attr) attrs) (attributesVec (attributes rel))

6967

7068simpleRel :: Relation

7169simpleRel = case mkRelation attrs tupleSet of

@@ -103,16 +101,19 @@ testMkRelationFromExprsBadAttrs = TestCase $ do

103101 Left err -> assertEqual "tuple type mismatch" (TupleAttributeTypeMismatchError (A.attributesFromList [Attribute "badAttr2" IntAtomType])) err

104102 Right _ -> assertFailure "expected tuple type mismatch"

105103

106−--creating an empty relation with duplicate attribute names should fail

107−testDuplicateAttributes :: Test

108−testDuplicateAttributes = TestCase $ do

109− let eRel = mkRelation attrs emptyTupleSet

110− attrs = attributesFromList [Attribute "a" IntAtomType, Attribute "a" TextAtomType]

111− assertEqual "duplicate attribute names" (Left (DuplicateAttributeNamesError (S.singleton "a"))) eRel

112−

113104testExistingRelationType :: Test

114105testExistingRelationType = TestCase $ do

115106 (graph, _) <- freshTransactionGraph dateExamples

116107 let typeResult = runRelationalExprM reenv (typeForRelationalExpr (ExistingRelation relationTrue))

117108 reenv = mkRelationalExprEnv dateExamples graph

118109 assertEqual "ExistingRelation with tuples type" (Right relationFalse) typeResult

110+

111+-- | Ensure that tuple reordering honors the

112+testReorderTuple :: Test

113+testReorderTuple = TestCase $ do

114+ let tup1 = mkRelationTuple attrs1 (V.fromList [IntAtom 4, TextAtom "test"])

115+ attrs1 = A.attributesFromList [Attribute "a" IntAtomType, Attribute "b" TextAtomType]

116+ attrs2 = A.attributesFromList [Attribute "b" TextAtomType, Attribute "a" IntAtomType]

117+ actual = reorderTuple attrs2 tup1

118+ expected = mkRelationTuple attrs2 (V.fromList [TextAtom "test", IntAtom 4])

119+ assertEqual "reorderTuple" expected actual

test/Relation/Tupleable.hs+18−7

@@ -8,22 +8,22 @@

88 , DataKinds

99 , TypeOperators

1010 , AllowAmbiguousTypes

11+ , DerivingVia

1112 #-}

1213import Test.HUnit

1314import ProjectM36.Tupleable.Deriving

1415import ProjectM36.Atomable

15−import ProjectM36.Attribute

16+import ProjectM36.Attribute as A

1617import ProjectM36.Error

17−import Data.Binary

1818import ProjectM36.Base

1919import Control.DeepSeq (NFData)

20−import GHC.Generics

2120import qualified Data.Vector as V

2221import qualified Data.Map as M

2322import qualified Data.Text as T

2423import qualified Data.Set as S

2524import System.Exit

2625import Data.Proxy

26+import Codec.Winery

2727

2828{-# ANN module ("Hlint: ignore Use newtype instead of data" :: String) #-}

2929

@@ -31,35 +31,43 @@ data Test1T = Test1C {

3131 attrA :: Integer

3232 }

3333 deriving (Generic, Eq, Show)

34+ deriving Serialise via WineryRecord Test1T

3435

3536data Test2T = Test2C {

3637 attrB :: Integer,

3738 attrC :: Integer

3839 }

3940 deriving (Generic, Eq, Show)

41+ deriving Serialise via WineryRecord Test2T

4042

4143data Test3T = Test3C Integer

4244 deriving (Generic, Eq, Show)

45+ deriving Serialise via WineryVariant Test3T

4346

4447data Test4T = Test4C

4548 deriving (Generic, Eq, Show)

49+ deriving Serialise via WineryVariant Test4T

4650

4751data Test5T = Test5C1 Integer |

4852 Test5C2 Integer

4953 deriving (Generic, Eq, Show)

54+ deriving Serialise via WineryVariant Test5T

5055

5156data Test6T = Test6C T.Text Integer Double

5257 deriving (Generic, Eq, Show)

5358

5459data Test7A = Test7AC Integer

55− deriving (Generic, Show, Eq, Binary, NFData, Atomable)

60+ deriving (Generic, Show, Eq, NFData, Atomable)

61+ deriving Serialise via WineryVariant Test7A

5662

5763

5864data Test7T = Test7C Test7A

5965 deriving (Generic, Show, Eq)

66+ deriving Serialise via WineryVariant Test7T

6067

6168data Test8T = Test8C

6269 deriving (Generic, Show, Eq)

70+ deriving Serialise via WineryVariant Test8T

6371

6472data Test9T = Test9C

6573 {

@@ -68,6 +76,7 @@ data Test9T = Test9C

6876 attr9C :: Double

6977 }

7078 deriving (Generic, Show, Eq)

79+ deriving Serialise via WineryRecord Test9T

7180

7281data Test10T = Test10C {

7382 longAttrNameA10 :: Integer,

@@ -75,6 +84,7 @@ data Test10T = Test10C {

7584 longMixed_attr_NameC10 :: Integer

7685 }

7786 deriving (Generic, Show, Eq)

87+ deriving Serialise via WineryRecord Test10T

7888

7989instance Tupleable Test1T

8090

@@ -100,7 +110,7 @@ main = do

100110 if errors tcounts + failures tcounts > 0 then exitFailure else exitSuccess

101111

102112testList :: Test

103−testList = TestList [testADT1, testADT2, testADT3, testADT4, testADT6, testADT7, testADT8, testInsertExpr, testDefineExpr, testUpdateExpr, testUpdateExprEmptyAttrs, testDeleteExpr, testUpdateExprWrongAttr, testReorderedTuple, testAddPrefixField, testDropPrefixField, testAddSuffixField, testDropSuffixField, testUpperCaseField, testLowerCaseField, testTitleCaseField, testCamelCaseField, testPascalCaseField, testSnakeCaseField, testSpinalCaseField, testTrainCaseField, testAsIsCodec, testAsIsField, testComposeRLCodec, testComposeRLField, testComposeLRCodec, testComposeLRField]

113+testList = TestList [testADT1, testADT2, testADT3, testADT4, testADT6, testADT7, testADT8 ,testInsertExpr, testDefineExpr, testUpdateExpr, testUpdateExprEmptyAttrs, testDeleteExpr, testUpdateExprWrongAttr, testReorderedTuple, testAddPrefixField, testDropPrefixField, testAddSuffixField, testDropSuffixField, testUpperCaseField, testLowerCaseField, testTitleCaseField, testCamelCaseField, testPascalCaseField, testSnakeCaseField, testSpinalCaseField, testTrainCaseField, testAsIsCodec, testAsIsField, testComposeRLCodec, testComposeRLField, testComposeLRCodec, testComposeLRField]

104114

105115testADT1 :: Test

106116testADT1 = TestCase $ assertEqual "one record constructor" (Right example) (fromTuple (toTuple example))

@@ -138,7 +148,7 @@ testADT7 :: Test

138148testADT7 = TestCase $ do

139149 let example = Test7C (Test7AC 3)

140150 assertEqual "atom type" (Right example) (fromTuple (toTuple example))

141− let expectedAttrs = V.singleton (Attribute "" (ConstructedAtomType "Test7A" M.empty))

151+ let expectedAttrs = A.singleton (Attribute "" (ConstructedAtomType "Test7A" M.empty))

142152 assertEqual "adt atomtype" expectedAttrs (toAttributes (Proxy :: Proxy Test7T))

143153

144154testADT8 :: Test

@@ -212,7 +222,8 @@ testDeleteExpr = TestCase $ do

212222testReorderedTuple :: Test

213223testReorderedTuple = TestCase $ do

214224 let tupleRev :: RelationTuple -> RelationTuple

215− tupleRev (RelationTuple v1 v2) = RelationTuple (V.reverse v1) (V.reverse v2)

225+ tupleRev (RelationTuple v1 v2) = RelationTuple (revAttrs v1) (V.reverse v2)

226+ revAttrs attrs = A.attributesFromList (reverse (A.toList attrs))

216227 expected = Test2C {attrB = 3,

217228 attrC = 4}

218229 actual = fromTuple . tupleRev . toTuple $ expected

test/Server/Main.hs+19−20

@@ -5,7 +5,6 @@ test client/server interaction

55import Test.HUnit

66import ProjectM36.Client

77import qualified ProjectM36.Client as C

8−import ProjectM36.Server.EntryPoints

98import ProjectM36.Server

109import ProjectM36.Server.Config

1110import ProjectM36.Relation

@@ -14,16 +13,8 @@ import ProjectM36.IsomorphicSchema

1413import ProjectM36.Base

1514

1615import System.Exit

17−

16+import Network.Socket (SockAddr(..))

1817import Control.Concurrent

19−import Network.Transport (EndPointAddress)

20−

21−#if MIN_VERSION_network_transport_tcp(0,6,0)

22−import Network.Transport.TCP.Internal (encodeEndPointAddress, decodeEndPointAddress)

23−#else

24−import Network.Transport.TCP (encodeEndPointAddress, decodeEndPointAddress)

25−#endif

26−

2718import Data.Either (isRight)

2819import Control.Exception

2920import System.IO.Temp

@@ -32,6 +23,8 @@ import System.FilePath

3223import System.Directory

3324#endif

3425

26+type Timeout = Int

27+

3528testList :: SessionId -> Connection -> MVar () -> Test

3629testList sessionId conn notificationTestMVar = TestList $ serverTests ++ sessionTests

3730 where

@@ -49,7 +42,7 @@ testList sessionId conn notificationTestMVar = TestList $ serverTests ++ session

4942 testRelationVariableSummary,

5043 testNotification notificationTestMVar

5144 ]

52− serverTests = [testRequestTimeout, testFileDescriptorCount]

45+ serverTests = [testRequestTimeout, testFileDescriptorCount, testClientConnectFail]

5346

5447main :: IO ()

5548main = do

@@ -69,11 +62,9 @@ main = do

6962testDatabaseName :: DatabaseName

7063testDatabaseName = "test"

7164

72−testConnection :: EndPointAddress -> MVar () -> IO (Either ConnectionError (SessionId, Connection))

73−testConnection serverAddress mvar = do

74− let Just (host, service, _) = decodeEndPointAddress serverAddress

75− serverAddress' = encodeEndPointAddress host service 1

76− let connInfo = RemoteProcessConnectionInfo testDatabaseName (NodeId serverAddress') (testNotificationCallback mvar)

65+testConnection :: Port -> MVar () -> IO (Either ConnectionError (SessionId, Connection))

66+testConnection serverPort mvar = do

67+ let connInfo = RemoteConnectionInfo testDatabaseName "127.0.0.1" (show serverPort) (testNotificationCallback mvar)

7768 --putStrLn ("testConnection: " ++ show serverAddress)

7869 eConn <- connectProjectM36 connInfo

7970 case eConn of

@@ -85,7 +76,7 @@ testConnection serverAddress mvar = do

8576 Right sessionId -> pure $ Right (sessionId, conn)

8677

8778-- | A version of 'launchServer' which returns the port on which the server is listening on a secondary thread

88−launchTestServer :: Timeout -> IO (EndPointAddress, ThreadId)

79+launchTestServer :: Timeout -> IO (Port, ThreadId)

8980launchTestServer ti = do

9081 addressMVar <- newEmptyMVar

9182 tid <- forkIO $

@@ -99,9 +90,9 @@ launchTestServer ti = do

9990 }

10091

10192 launchServer config (Just addressMVar) >> pure ()

102− endPointAddress <- takeMVar addressMVar

93+ (SockAddrInet port _) <- takeMVar addressMVar

10394 --liftIO $ putStrLn ("launched server on " ++ show endPointAddress)

104− pure (endPointAddress, tid)

95+ pure (fromIntegral port, tid)

10596

10697testRelationalExpr :: SessionId -> Connection -> Test

10798testRelationalExpr sessionId conn = TestCase $ do

@@ -217,7 +208,7 @@ testRequestTimeout = TestCase $ do

217208 Left err -> putStrLn ("failed to connect: " ++ show err) >> exitFailure

218209 Right (session, testConn) -> do

219210 res <- catchJust (\exc -> if exc == RequestTimeoutException then Just exc else Nothing) (callTestTimeout_ session testConn) (const (pure False))

220− assertBool "exception was not thrown" (not res)

211+ assertBool "timeout exception was not thrown" (not res)

221212 killThread serverTid

222213

223214testFileDescriptorCount :: Test

@@ -247,3 +238,11 @@ fdCount = do

247238--pass on non-linux platforms

248239testFileDescriptorCount = TestCase (pure ())

249240#endif

241+

242+testClientConnectFail :: Test

243+testClientConnectFail = TestCase $ do

244+ let connInfo = RemoteConnectionInfo "nonexistentdb" "127.0.0.1" "7777" emptyNotificationCallback

245+ eConn <- connectProjectM36 connInfo

246+ case eConn of

247+ Left (IOExceptionError _) -> pure ()

248+ _ -> assertFailure "connection failure failed"

test/Server/WebSocket.hs+3−9

@@ -18,12 +18,6 @@ import Data.Aeson

1818import qualified Data.Map as M

1919import qualified Data.ByteString.Lazy as BS

2020import ProjectM36.Relation

21−#if MIN_VERSION_network_transport_tcp(0,6,0)

22−import Network.Transport.TCP.Internal (decodeEndPointAddress)

23−#else

24−import Network.Transport.TCP (decodeEndPointAddress)

25−#endif

26−

2721

2822--start the websocket server

2923-- run some tutoriald against it

@@ -37,12 +31,12 @@ launchTestServer = do

3731 testDatabaseName = "test"

3832 -- start normal server

3933 _ <- forkIO (launchServer config (Just addressMVar) >> pure ())

40− serverAddress <- takeMVar addressMVar

34+ (SockAddrInet dbPort _) <- takeMVar addressMVar

4135 let wsServerHost = "127.0.0.1"

4236 wsServerPort = 8889

43− Just (dbHost, dbPort, _) = decodeEndPointAddress serverAddress

37+ dbHost = "127.0.0.1"

4438 -- start websocket server proxy -- runServer doesn't support returning an arbitrary socket

45− _ <- forkIO (WS.runServer wsServerHost wsServerPort (websocketProxyServer (read dbPort) dbHost))

39+ _ <- forkIO (WS.runServer wsServerHost wsServerPort (websocketProxyServer (fromIntegral dbPort) dbHost))

4640 --wait for socket to be listening

4741 waitForListenSocket 5 (fromIntegral wsServerPort)

4842 pure (fromIntegral wsServerPort, testDatabaseName)

test/TransactionGraph/Persist.hs+3−3

@@ -99,11 +99,11 @@ testMerkleHashValidation = TestCase $

9999 --alter the on-disk representation and check that the hash validation fails

100100 eGraph <- transactionGraphLoad dbdir emptyTransactionGraph Nothing

101101 case eGraph of

102− Left err -> assertFailure "failed to load graph"

102+ Left err -> assertFailure $ "failed to load graph" ++ show err

103103 Right graph -> do

104104 let trans = transactionHeadsForGraph graph M.! "master"

105105 updatedTrans = Transaction (transactionId trans) (transactionInfo trans) updatedSchemas

106− transactionDir = dbdir </> show (transactionId trans)

106+ transactionDir' = dbdir </> show (transactionId trans)

107107 updatedSchemas =

108108 case schemas trans of

109109 Schemas ctx sschemas ->

@@ -120,7 +120,7 @@ testMerkleHashValidation = TestCase $

120120 let val'' = TG.validateMerkleHashes maliciousGraph

121121 assertEqual "loaded graph merkle hashes" (Left [MerkleValidationError (transactionId trans) regMerkleHash malMerkleHash]) val''

122122 --delete existing transaction directory

123− removeDirectoryRecursive transactionDir

123+ removeDirectoryRecursive transactionDir'

124124 writeTransaction NoDiskSync dbdir updatedTrans

125125

126126 --read graph from disk

test/TutorialD/Interpreter/Import/ImportTest.hsnew file+47

@@ -0,0 +1,47 @@

1+import Test.HUnit

2+import ProjectM36.Base

3+import TutorialD.Interpreter.Import.TutorialD

4+import System.Exit

5+import qualified Data.Text as T

6+import System.IO.Temp

7+import System.FilePath

8+import qualified Data.Map as M

9+import System.IO

10+import System.Directory

11+import qualified Data.ByteString as BS

12+import qualified Data.Text.Encoding as TE

13+import Text.URI hiding (makeAbsolute)

14+

15+main :: IO ()

16+main = do

17+ tcounts <- runTestTT $ TestList [testTutdFileImport

18+ ,testTutdHTTPSImport

19+ ]

20+ if errors tcounts + failures tcounts > 0 then exitFailure else exitSuccess

21+

22+testTutdFileImport :: Test

23+testTutdFileImport = TestCase $

24+ withSystemTempFile "m.tutd" $ \tempPath handle -> do

25+ BS.hPut handle (TE.encodeUtf8 "x:=relation{tuple{a 5,b \"spam\"}}; y:=relation{tuple{b \"漢字\"}}")

26+ hClose handle

27+ let expectedExpr = MultipleExpr [

28+ Assign "x" (MakeRelationFromExprs Nothing

29+ $ TupleExprs () [TupleExpr (M.fromList [("a", NakedAtomExpr $ IntegerAtom 5),

30+ ("b", NakedAtomExpr $ TextAtom "spam")])]),

31+ Assign "y" (MakeRelationFromExprs Nothing

32+ $ TupleExprs () [TupleExpr (M.fromList [("b", NakedAtomExpr (TextAtom "漢字"))])])]

33+ --on Windows, the file URI should not include the drive letter "/c/Users..." -> "/Users"

34+ let uri = "file://" <> map (\c -> if c == '\\' then '/' else c) ( joinDrive "/" (dropDrive tempPath))

35+ fileURI <- mkURI (T.pack uri)

36+ imported <- importTutorialDFromFile fileURI Nothing

37+ assertEqual "import tutd" (Right expectedExpr) imported

38+

39+testTutdHTTPSImport :: Test

40+testTutdHTTPSImport = TestCase $ do

41+ uri <- mkURI "https://raw.githubusercontent.com/agentm/project-m36/master/test/TutorialD/Interpreter/Import/httpimporttest.tutd"

42+ let hash = "effe32b247586dc3ac0079fc241b9618d41d189afcaeb7907edbe5a8b45992a4"

43+ expected = Right (MultipleExpr [Assign "x" (RelationVariable "true" ()),Assign "y" (RelationVariable "false" ())])

44+ actual <- importTutorialDViaHTTP uri (Just hash)

45+ assertEqual "github https" expected actual

46+

47+

test/TutorialD/Interpreter/Import/TutorialD.hsdeleted−29

@@ -1,29 +0,0 @@

1−import Test.HUnit

2−import ProjectM36.Base

3−import TutorialD.Interpreter.Import.TutorialD

4−import System.Exit

5−import System.IO.Temp

6−import qualified Data.Map as M

7−import System.IO

8−import qualified Data.ByteString as BS

9−import qualified Data.Text.Encoding as TE

10−

11−main :: IO ()

12−main = do

13− tcounts <- runTestTT $ TestList [testTutdImport]

14− if errors tcounts + failures tcounts > 0 then exitFailure else exitSuccess

15−

16−testTutdImport :: Test

17−testTutdImport = TestCase $

18− withSystemTempFile "m.tutd" $ \tempPath handle -> do

19− BS.hPut handle (TE.encodeUtf8 "x:=relation{tuple{a 5,b \"spam\"}}; y:=relation{tuple{b \"漢字\"}}")

20− hClose handle

21− let expectedExpr = MultipleExpr [

22− Assign "x" (MakeRelationFromExprs Nothing

23− $ TupleExprs () [TupleExpr (M.fromList [("a", NakedAtomExpr $ IntegerAtom 5),

24− ("b", NakedAtomExpr $ TextAtom "spam")])]),

25− Assign "y" (MakeRelationFromExprs Nothing

26− $ TupleExprs () [TupleExpr (M.fromList [("b", NakedAtomExpr (TextAtom "漢字"))])])]

27− imported <- importTutorialD tempPath

28− assertEqual "import tutd" (Right expectedExpr) imported

29−

test/TutorialD/Interpreter/Import/httpimporttest.tutdnew file+2

@@ -0,0 +1,2 @@

1+x:=true;

2+y:=false;

test/TutorialD/Interpreter.hs → test/TutorialD/InterpreterTest.hsrenamed+46−7

@@ -78,13 +78,17 @@ main = do

7878 testAtomFunctionArgumentMismatch,

7979 testInvalidDataConstructor,

8080 testBasicList,

81− testRelationDeclarationMismatch

81+ testRelationDeclarationMismatch,

82+ testInvalidTuples,

83+ testSelfReferencingUncommittedContext,

84+ testUnionAndIntersectionAttributeExprs

8285 ]

8386

8487simpleRelTests :: Test

8588simpleRelTests = TestCase $ do

8689 (graph, transId) <- freshTransactionGraph dateExamples

87− mapM_ (\(tutd, expected) -> assertTutdEqual basicDatabaseContext transId graph expected tutd) testTups

90+ mapM_ (\(tutd, expected) ->

91+ assertTutdEqual basicDatabaseContext transId graph expected tutd) testTups

8892 where

8993 testTups = [("x:=true", Right relationTrue),

9094 ("x:=false", Right relationFalse),

@@ -119,7 +123,8 @@ simpleRelTests = TestCase $ do

119123 ("x:=relation{tuple{a 5}} : {b:=6}", mkRelationFromTuples simpleDAttributes [RelationTuple simpleDAttributes (V.fromList [IntegerAtom 5, IntegerAtom 6])]),

120124 ("x:=relation{tuple{a 5}} : {b:=add(@a,5)}", mkRelationFromTuples simpleDAttributes [RelationTuple simpleDAttributes (V.fromList [IntegerAtom 5, IntegerAtom 10])]),

121125 ("x:=relation{tuple{a 5}} : {b:=add(@a,\"spam\")}", Left (AtomFunctionTypeError "add" 2 IntegerAtomType TextAtomType)),

122− ("x:=relation{tuple{a 5}} : {b:=add(add(@a,2),5)}", mkRelationFromTuples simpleDAttributes [RelationTuple simpleDAttributes (V.fromList [IntegerAtom 5, IntegerAtom 12])])

126+ ("x:=relation{tuple{a 5}} : {b:=add(add(@a,2),5)}", mkRelationFromTuples simpleDAttributes [RelationTuple simpleDAttributes (V.fromList [IntegerAtom 5, IntegerAtom 12])]),

127+ ("x:=false:{a:=1,b:=2}", mkRelationFromTuples simpleDAttributes [])

123128 ]

124129 simpleAAttributes = A.attributesFromList [Attribute "a" IntegerAtomType]

125130 simpleBAttributes = A.attributesFromList [Attribute "d" IntegerAtomType]

@@ -131,7 +136,8 @@ simpleRelTests = TestCase $ do

131136dateExampleRelTests :: Test

132137dateExampleRelTests = TestCase $ do

133138 (graph, transId) <- freshTransactionGraph dateExamples

134− mapM_ (\(tutd, expected) -> assertTutdEqual dateExamples transId graph expected tutd) testTups

139+ mapM_ (\(tutd, expected) ->

140+ assertTutdEqual dateExamples transId graph expected tutd) testTups

135141 where

136142 simpleEitherIntTextAttributes = A.attributesFromList [Attribute "a" (eitherAtomType IntegerAtomType TextAtomType)]

137143 maybeIntegerAtomType = ConstructedAtomType "Maybe" (M.singleton "a" IntegerAtomType)

@@ -229,7 +235,7 @@ transactionGraphAddCommitTest = TestCase $ do

229235 commit sessionId dbconn >>= eitherFail

230236 discon <- disconnectedTransaction_ sessionId dbconn

231237 let context = Discon.concreteDatabaseContext discon

232− assertEqual "ensure x was added" (M.lookup "x" (relationVariables context)) (Just (RelationVariable "s" UncommittedContextMarker))

238+ assertEqual "ensure x was added" (M.lookup "x" (relationVariables context)) (Just (ExistingRelation suppliersRel))

233239

234240transactionRollbackTest :: Test

235241transactionRollbackTest = TestCase $ do

@@ -356,7 +362,7 @@ testComments :: Test

356362testComments = TestCase $ do

357363 (sessionId, dbconn) <- dateExamplesConnection emptyNotificationCallback

358364 mapM_ (executeTutorialD sessionId dbconn) [

359− ":branch testbranch --test comment\n",

365+ ":branch testbranch --test comment",

360366 ":jumphead {- test comment -} master"]

361367

362368-- create a graph and query from two disparate contexts

@@ -539,7 +545,7 @@ testListConstructedAtom = TestCase $ do

539545testTypeChecker :: Test

540546testTypeChecker = TestCase $ do

541547 (sessionId, dbconn) <- dateExamplesConnection emptyNotificationCallback

542− let err1 = "AtomFunctionTypeError \"max\" 1 (RelationAtomType [Attribute \"_\" IntegerAtomType]) IntegerAtomType"

548+ let err1 = "AtomFunctionTypeError \"max\" 1"

543549 expectTutorialDErr sessionId dbconn (T.isPrefixOf err1) "x:=relation{tuple{a 0}}:{b:=max(@a)}"

544550

545551--exercise expression parser

@@ -659,6 +665,10 @@ testWithClause = TestCase $ do

659665 executeTutorialD sessionId dbconn "x:=with (x as s) x"

660666 eX <- executeRelationalExpr sessionId dbconn (RelationVariable "x" ())

661667 assertEqual "with x as s" (Right suppliersRel) eX

668+

669+ executeTutorialD sessionId dbconn "y:=with(a as true) (with (b as a) b)"

670+ eY <- executeRelationalExpr sessionId dbconn (RelationVariable "y" ())

671+ assertEqual "nested with" (Right relationTrue) eY

662672

663673 let err1 = "RelVarAlreadyDefinedError"

664674 expectTutorialDErr sessionId dbconn (T.isPrefixOf err1) "x:=with (s as s) s"

@@ -691,3 +701,32 @@ testRelationDeclarationMismatch :: Test

691701testRelationDeclarationMismatch = TestCase $ do

692702 (sessionId, dbconn) <- dateExamplesConnection emptyNotificationCallback

693703 expectTutorialDErr sessionId dbconn (T.isPrefixOf "AtomTypeMismatchError") "data A a = A a | B | C; a := relation{a A Integer}{tuple{a A \"1\"}}"

704+

705+--generate errors when the tuples in a new relation don't match

706+testInvalidTuples :: Test

707+testInvalidTuples = TestCase $ do

708+ (sessionId, dbconn) <- dateExamplesConnection emptyNotificationCallback

709+ expectTutorialDErr sessionId dbconn (T.isPrefixOf "AttributeNamesMismatchError") ":showexpr relation{tuple{a 1},tuple{b 2}}"

710+ expectTutorialDErr sessionId dbconn (T.isPrefixOf "AttributeNamesMismatchError") ":showexpr relation{tuple{a 1},tuple{a 2, b 3}}"

711+-- expectTutorialDErr sessionId dbconn (T.isPrefixOf "ParseErrorBundle") ":showexpr relation{tuple{a 2, a 3}}" --parse failure can't be validated with this function

712+

713+testSelfReferencingUncommittedContext :: Test

714+testSelfReferencingUncommittedContext = TestCase $ do

715+ (sessionId, dbconn) <- dateExamplesConnection emptyNotificationCallback

716+ executeTutorialD sessionId dbconn "s:=s union s"

717+ eS <- executeRelationalExpr sessionId dbconn (RelationVariable "s" ())

718+ _ <- rollback sessionId dbconn

719+ eSorig <- executeRelationalExpr sessionId dbconn (RelationVariable "s" ())

720+ assertEqual "s=s'" eSorig eS

721+

722+testUnionAndIntersectionAttributeExprs :: Test

723+testUnionAndIntersectionAttributeExprs = TestCase $ do

724+ (sessionId, dbconn) <- dateExamplesConnection emptyNotificationCallback

725+ executeTutorialD sessionId dbconn "x:=s{intersection of {all but sname} {sname}}"

726+ xRel <- executeRelationalExpr sessionId dbconn (RelationVariable "x" ())

727+ assertEqual "intersection attrs" (Right relationTrue) xRel

728+

729+ executeTutorialD sessionId dbconn "y:=s{union of {all but sname} {sname}}"

730+ yRel <- executeRelationalExpr sessionId dbconn (RelationVariable "y" ())

731+ assertEqual "union attrs" (Right suppliersRel) yRel

732+

test/TutorialD/PrinterTest.hsnew file+47

@@ -0,0 +1,47 @@

1+{-# LANGUAGE OverloadedStrings #-}

2+import Test.HUnit

3+import ProjectM36.Base

4+import System.Exit

5+import Data.Text.Prettyprint.Doc

6+import Data.Map (fromList)

7+import TutorialD.Printer ()

8+import TutorialD.Interpreter.RelationalExpr

9+import Text.Megaparsec

10+import Data.Text (pack)

11+

12+testList :: Test

13+testList = TestList [

14+ testPretty "true" (RelationVariable "true" ()),

15+ testPretty "relation{tuple{a 3, b \"x\"}, tuple{a 4, b \"y\"}}" (MakeRelationFromExprs Nothing (TupleExprs () [TupleExpr (fromList [("a",NakedAtomExpr (IntegerAtom 3)),("b",NakedAtomExpr (TextAtom "x"))]),TupleExpr (fromList [("a",NakedAtomExpr (IntegerAtom 4)),("b",NakedAtomExpr (TextAtom "y"))])])),

16+ testPretty "true:{a:=1, b:=1}" (Extend (AttributeExtendTupleExpr "b" (NakedAtomExpr (IntegerAtom 1))) (Extend (AttributeExtendTupleExpr "a" (NakedAtomExpr (IntegerAtom 1))) (RelationVariable "true" ()))),

17+ testPretty "relation{tuple{a fromGregorian(2014, 2, 4)}}" (MakeRelationFromExprs Nothing (TupleExprs () [TupleExpr (fromList [("a",FunctionAtomExpr "fromGregorian" [NakedAtomExpr (IntegerAtom 2014),NakedAtomExpr (IntegerAtom 2),NakedAtomExpr (IntegerAtom 4)] ())])])),

18+ testPretty "relation{tuple{a bytestring(\"dGVzdGRhdGE=\")}}" (MakeRelationFromExprs Nothing (TupleExprs () [TupleExpr (fromList [("a",FunctionAtomExpr "bytestring" [NakedAtomExpr (TextAtom "dGVzdGRhdGE=")] ())])])),

19+ testPretty "relation{tuple{a t}}" (MakeRelationFromExprs Nothing (TupleExprs () [TupleExpr (fromList [("a",NakedAtomExpr (BoolAtom True))])])),

20+ testPretty "relation{tuple{a Cons 4 (Cons 5 Empty)}}" (MakeRelationFromExprs Nothing (TupleExprs () [TupleExpr (fromList [("a",ConstructedAtomExpr "Cons" [NakedAtomExpr (IntegerAtom 4),ConstructedAtomExpr "Cons" [NakedAtomExpr (IntegerAtom 5),ConstructedAtomExpr "Empty" [] ()] ()] ())])])),

21+ testPretty "relation{a Int, b Text, c Bool}{}" (MakeRelationFromExprs (Just [AttributeAndTypeNameExpr "a" (ADTypeConstructor "Int" []) (),AttributeAndTypeNameExpr "b" (ADTypeConstructor "Text" []) (),AttributeAndTypeNameExpr "c" (ADTypeConstructor "Bool" []) ()]) (TupleExprs () [])),

22+ testPretty "relation{a relation{b Int}}{}" (MakeRelationFromExprs (Just [AttributeAndTypeNameExpr "a" (RelationAtomTypeConstructor [AttributeAndTypeNameExpr "b" (ADTypeConstructor "Int" []) ()]) ()]) (TupleExprs () []))

23+ ]

24+

25+main :: IO ()

26+main = do

27+ tcounts <- runTestTT testList

28+ if errors tcounts + failures tcounts > 0 then exitFailure else exitSuccess

29+

30+testPretty :: String -> RelationalExpr -> Test

31+testPretty tutdStr relExprADT =

32+ TestCase $ do

33+ let relExprStr = show (pretty relExprADT)

34+ print relExprStr

35+ roundTrip <- parseRelExpr relExprStr

36+ {-tutdIn <- parseRelExpr tutdStr

37+ print ("tutd parsed", tutdIn)-}

38+ assertEqual ("pretty ADT " <> tutdStr) tutdStr relExprStr

39+ assertEqual ("round-trip " <> tutdStr) relExprADT roundTrip

40+

41+--round trip tutoriald

42+parseRelExpr :: String -> IO RelationalExpr

43+parseRelExpr tutdStr =

44+ case parse relExprP "test" (pack tutdStr) of

45+ Left err ->

46+ assertFailure (show err)

47+ Right parsed -> pure parsed

test/scripts.hs+5−2

@@ -4,6 +4,8 @@ import TutorialD.Interpreter.Import.TutorialD

44import System.Directory

55import Data.List (isSuffixOf)

66import System.Exit

7+import qualified Data.Text as T

8+import Text.URI

810testList :: IO Test

911testList = do

@@ -20,7 +22,8 @@ main = do

2022

2123testScript :: FilePath -> Test

2224testScript tutdFile = TestCase $ do

23− eImport <- importTutorialD tutdFile

25+ fileURI <- mkURI (T.pack ("file://" <> tutdFile))

26+ eImport <- importTutorialDFromFile fileURI Nothing

2427 case eImport of

2528 Left err -> assertFailure ("tutd import failure in " ++ tutdFile ++ ": " ++ show err)

26− Right _ -> pure ()

29+ Right _ -> pure ()