fd31963..master · project-m36

.github/workflows/ci.yaml+61−21

since splitsnapshots

unifiedsplit

@@ -6,24 +6,64 @@ jobs:

6 dockerimage:

7 runs-on: ubuntu-latest

8 steps:

9− - uses: actions/checkout@v2.3.1

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

10− - uses: cachix/install-nix-action@v10

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

11− with:

11+ with:

12− skip_adding_nixpkgs_channel: true

12+ nix_path: nixpkgs=channel:nixos-unstable

13− - uses: cachix/cachix-action@v6

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

14− with:

14+ with:

15− name: project-m36

15+ name: project-m36

16− signingKey: '${{ secrets.CACHIX_SIGNING_KEY }}'

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

17− - run: cachix use iohk

17+ - run: cachix use iohk

18− - name: docker load

18+ - name: docker load

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

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

20− - name: docker login

20+ - name: docker login

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

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

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

22− - name: docker tag with version

23+ - name: docker tag with version

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

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

24− if: ${{ github.ref == 'refs/heads/master' }}

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

25− - name: docker tag latest

26+ - name: docker tag latest

26− run: docker tag project-m36:latest projectm36/project-m36:latest

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

27− if: ${{ github.ref == 'refs/heads/master' }}

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

28− - run: docker push projectm36/project-m36

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

29− if: ${{ github.ref == 'refs/heads/master' }}

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

18jupyter/itutd.egg-info

19jupyter/build

20juyter/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+17

@@ -1,3 +1,20 @@

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

2+

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

4+

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

6+

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

9+

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+

1# 2020-10-05 (v0.8.1)

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

2

19

3* support GHC 8.10

20* support GHC 8.10

README.markdown+2−3

@@ -4,7 +4,6 @@

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

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

6[![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)

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

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

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

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

10

9

@@ -45,7 +44,7 @@ Project:M36 supports multiple frontends which target different audiences.

45

44

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

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

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

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

48−* 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)

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

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

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

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

51

50

@@ -95,7 +94,7 @@ Project:M36 supports multiple frontends which target different audiences.

95

94

96## Development

95## Development

97

96

98−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.

99

98

100## Related Projects

99## Related Projects

101

100

cabal.project+2−5

@@ -1,10 +1,7 @@

1packages: project-m36.cabal

2

3−--RPC library

4−source-repository-package

3+package *

5− type: git

4+ split-sections: True

6− location: https://github.com/agentm/curryer.git

7− tag: 1e60c0580ca33d6ae1e97aaddc32189fdfe3ef6c

8

5

9--high-performance streaming library

6--high-performance streaming library

10source-repository-package

7source-repository-package

docker.nix+16−11

@@ -1,13 +1,18 @@

1−{ pkgs ? import ./pkgs.nix }:

1+{ compiler ? "ghc8104"

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

3+, pkgs ? import sources.nixpkgs { }

4+}:

2let

5let

3− release = import ./release.nix { inherit pkgs; };

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

4− static-project-m36 = pkgs.haskell.lib.justStaticExecutables release.project;

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

5in

8in

6− pkgs.dockerTools.buildImage {

9+pkgs.dockerTools.buildImage {

7− name = "project-m36";

10+ name = "project-m36";

8− tag = "latest";

11+ tag = "latest";

9− contents = [static-project-m36];

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

10− #expose default project-m36 and websocket server ports

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

14+ config = {

11− config = { Env = ["LC_ALL=en_US.UTF-8"];

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

12− ExposedPorts = { "6543/tcp" = {}; "8000/tcp" = {}; }; };

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

17+ };

13− }

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

4

5## Prerequisites

6

7−* any Linux

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

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

9−* cabal (package downloader) installed

10

8

11## Download and Install

9## Download and Install

12

10

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+

13```bash

17```bash

14git clone https://github.com/agentm/project-m36.git

18git 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

18```

20```

19

21

20## Some Basic TutorialD

22## Some Basic TutorialD

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

26### Load the Canonical Chris Date Example

28### Load the Canonical Chris Date Example

27

29

28```

30```

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

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

30−```

31−

32−or

33−

34−```

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

36```

32```

37

33

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.

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.

39−

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

41

35

42### Execute Relational Expressions

36### Execute Relational Expressions

43

37

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

164#### Create a Relation Variable

158#### Create a Relation Variable

165

159

166```

160```

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}}

168TutorialD (master/main): :showexpr x

162TutorialD (master/main): :showexpr x

169┌────────┬──────────┐

163┌────────┬──────────┐

170│age::Int│name::Text│

164│age::Int│name::Text│

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

179#### Insert Additional Tuples

173#### Insert Additional Tuples

180

174

181```

175```

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}}

183TutorialD (master/main): :showexpr x

177TutorialD (master/main): :showexpr x

184−┌────────┬──────────┐

178+┌────────────┬──────────┐

185−│age::Int│name::Text│

179+│age::Integer│name::Text│

186−├────────┼──────────┤

180+├────────────┼──────────┤

181+│31 │"Mike" │

187−│40 │"Steve" │

182+│40 │"Steve" │

188−│31 │"Mike" │

189−└────────┴──────────┘

183+└────────────┴──────────┘

184+

190TutorialD (master/main): insert x relation{tuple{name "Bob", age 24}}

185TutorialD (master/main): insert x relation{tuple{name "Bob", age 24}}

191TutorialD (master/main): :showexpr x

186TutorialD (master/main): :showexpr x

192−┌────────┬──────────┐

187+┌────────────┬──────────┐

193−│age::Int│name::Text│

188+│age::Integer│name::Text│

194−├────────┼──────────┤

189+├────────────┼──────────┤

190+│31 │"Mike" │

195−│40 │"Steve" │

191+│40 │"Steve" │

196−│24 │"Bob" │

192+│24 │"Bob" │

197−│31 │"Mike" │

198−└────────┴──────────┘

193+└────────────┴──────────┘

194+

199```

195```

200

196

201Note that the relational insertion is identical to "x:=x union relation{...}".

197Note 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{...}".

204

200

205```

201```

206TutorialD (master/main): :showexpr s

202TutorialD (master/main): :showexpr s

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

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

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

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

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

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

210−│"Paris" │"S2" │"Jones" │10 │

211−│"Paris" │"S3" │"Blake" │30 │

212−│"London" │"S1" │"Smith" │20 │

206+│"London" │"S1" │"Smith" │20 │

213−│"London" │"S4" │"Clark" │20 │

214−│"Athens" │"S5" │"Adams" │30 │

207+│"Athens" │"S5" │"Adams" │30 │

208+│"Paris" │"S3" │"Blake" │30 │

209+│"London" │"S4" │"Clark" │20 │

210+│"Paris" │"S2" │"Jones" │10 │

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

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

216TutorialD (master/main): update s where city="London" (status:=35)

212TutorialD (master/main): update s where city="London" (status:=35)

217TutorialD (master/main): :showexpr s

213TutorialD (master/main): :showexpr s

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

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

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

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

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

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

217+│"Athens" │"S5" │"Adams" │30 │

218+│"London" │"S1" │"Smith" │35 │

221−│"London" │"S4" │"Clark" │35 │

219+│"London" │"S4" │"Clark" │35 │

222−│"London" │"S1" │"Smith" │35 │

220+│"Paris" │"S3" │"Blake" │30 │

223−│"Paris" │"S2" │"Jones" │10 │

221+│"Paris" │"S2" │"Jones" │10 │

224−│"Paris" │"S3" │"Blake" │30 │

225−│"Athens" │"S5" │"Adams" │30 │

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

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

223+

227```

224```

228#### Deleting Tuples from a Relation Variable

225#### Deleting Tuples from a Relation Variable

229

226

230```

227```

231TutorialD (master/main): :showexpr s

228TutorialD (master/main): :showexpr s

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

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

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

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

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

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

235−│"Paris" │"S2" │"Jones" │10 │

232+│"Paris" │"S2" │"Jones" │10 │

236−│"Paris" │"S3" │"Blake" │30 │

233+│"Paris" │"S3" │"Blake" │30 │

237−│"London" │"S1" │"Smith" │20 │

234+│"London" │"S1" │"Smith" │20 │

238−│"London" │"S4" │"Clark" │20 │

239−│"Athens" │"S5" │"Adams" │30 │

235+│"Athens" │"S5" │"Adams" │30 │

236+│"London" │"S4" │"Clark" │20 │

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

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

241TutorialD (master/main): delete s where sname="Adams"

238TutorialD (master/main): delete s where sname="Adams"

242TutorialD (master/main): :showexpr s

239TutorialD (master/main): :showexpr s

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

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

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

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

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

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

246−│"Paris" │"S2" │"Jones" │10 │

243+│"Paris" │"S2" │"Jones" │10 │

244+│"London" │"S4" │"Clark" │20 │

247−│"Paris" │"S3" │"Blake" │30 │

245+│"Paris" │"S3" │"Blake" │30 │

248−│"London" │"S1" │"Smith" │20 │

246+│"London" │"S1" │"Smith" │20 │

249−│"London" │"S4" │"Clark" │20 │

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

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

251```

248```

252

249

253### Execute Transaction Graph Expressions

250### Execute Transaction Graph Expressions

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

270

267

271```

268```

272TutorialD (master/main): :branch experimental

269TutorialD (master/main): :branch experimental

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

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

274TutorialD (experimental): :commit

271TutorialD (experimental): :commit

275```

272```

276

273

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

9### Example Export

10

11```

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

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

13TutorialD (master/main): :exportcsv s "/tmp/csv"

14```

15```

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

37S6,Samson,100,New York

38```

39```

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

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

41TutorialD (master/main): :showexpr s

42┌──────────┬────────┬───────────┬───────────────┐

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

docs/introduction_to_projectm36.markdown+2−2

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

51

52To build with stack:

53

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

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

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

56* Linux, macOS, or Microsoft Windows

57

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

63

64At this point, the TutorialD interactive interpreter can be run using ```stack exec tutd```.

65

66−Alternative building with GHC 8.4.4 or greater:

66+Alternative building with GHC 8.6.5 or greater:

67

68* ```cabal new-build```

69

docs/introduction_to_the_relational_algebra.markdown+1−1

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

202

203(Course Relation)

204

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)|

206|-------------------------------|----------------------------------|--------------------------------------|

207|English 1|Steve|Room 104|

208|French 2|Bob|Room 103|

docs/reaching_out_of_the_tarpit.markdown+1−1

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

57To 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:

58

59```

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

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

61TutorialD (master/main): :showexpr p

62┌───────────────────┬────────────┬───────────────────┬────────────┬────────────┐

63│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

47

48|Database Context Expression |Description |

49|------------------------------------------------------|---------------------------------------|

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|

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

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

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

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

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

55|`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):

19The examples in this tutorial can be executed after loading Chris Date's sample relations using:

20

21```

22−:importexample date

22+:importexample cjdate

23```

24

25Each 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

30|p|parts|

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

32

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+

33### Types

51### Types

34

52

35TutorialD is strongly-typed. The basic built-in types are:

53TutorialD is strongly-typed. The basic built-in types are:

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

197└────────┴───────────┴───────────────┘

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

198```

216```

199

217

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`:

201

219

202```

220```

203TutorialD (master/main): :showexpr (s join sp){all from s}

221TutorialD (master/main): :showexpr (s join sp){all from s}

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

213

231

214Above, we join `s` and `sp` but project the result back onto the attributes of `s`.

232Above, we join `s` and `sp` but project the result back onto the attributes of `s`.

215

233

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+

216#### Restriction

270#### Restriction

217

271

218Restriction is applied using a "where" clause, much like in SQL.

272Restriction is applied using a "where" clause, much like in SQL.

examples/Plantfarm.hsnew file+446

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

1+{-# LANGUAGE DeriveGeneric #-}

2+

3+{-# LANGUAGE OverloadedStrings #-}

4+

5+{-# LANGUAGE DeriveAnyClass #-}

6+

7+{-# LANGUAGE DerivingVia #-}

8+

9+

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/out_of_the_tarpit.tutd+4−4

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

3data Address = Address Text

4data Agent = Agent Text

5data Name = Name Text

6−data Price = Price Double

6+data Price = Price Integer --dollars

7data RoomType = Kitchen | Bathroom | LivingRoom

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

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

9data AreaCode = City | Suburban | Rural

10data SpeedBand = VeryFast | Fast | Medium | Slow

11

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

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

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

59--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

61

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

63

64-- sample data

65

jupyter/TutorialD Notebook Walkthrough.ipynb+1−1

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

38 }

39 ],

40 "source": [

41− ":importexample date"

41+ ":importexample cjdate"

42 ]

43 },

44 {

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.

2+

3+let

4+

5+ #

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

7+ #

8+

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); }

pkgs.nixdeleted−7

@@ -1,7 +0,0 @@

1−let

2−nixpkgs = builtins.fetchGit {

3− url = "https://github.com/NixOS/nixpkgs";

4− rev = "f58482658eabf7d695f45904ecbc5f49c19fef98";

5−};

6−in

7−import nixpkgs { config.allowBroken = true; }

project-m36.cabal+89−55

@@ -1,7 +1,8 @@

1Cabal-Version: 2.2

2Name: project-m36

3−Version: 0.9.0

3+Version: 0.9.3

4−License: Unlicense

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

5Build-Type: Simple

6Build-Type: Simple

6Homepage: https://github.com/agentm/project-m36

7Homepage: https://github.com/agentm/project-m36

7Bug-Reports: https://github.com/agentm/project-m36/issues

8Bug-Reports: https://github.com/agentm/project-m36/issues

@@ -34,7 +35,7 @@ Flag haskell-scripting

34 Default: True

35 Default: True

35

36

36Library

37Library

37− 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, network-transport, 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 && < 0.3, winery, curryer, network

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

38 if flag(haskell-scripting)

39 if flag(haskell-scripting)

39 Build-Depends: ghc >= 8.2 && < 8.11

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

40 CPP-Options: -DPM36_HASKELL_SCRIPTING

41 CPP-Options: -DPM36_HASKELL_SCRIPTING

@@ -62,6 +63,7 @@ Library

62 ProjectM36.AtomFunction,

63 ProjectM36.AtomFunction,

63 ProjectM36.AtomFunctionError,

64 ProjectM36.AtomFunctionError,

64 ProjectM36.ScriptSession,

65 ProjectM36.ScriptSession,

66+ ProjectM36.Shortcuts,

65 ProjectM36.DatabaseContextFunction,

67 ProjectM36.DatabaseContextFunction,

66 ProjectM36.DatabaseContextFunctionError,

68 ProjectM36.DatabaseContextFunctionError,

67 ProjectM36.DatabaseContextFunctionUtils,

69 ProjectM36.DatabaseContextFunctionUtils,

@@ -116,7 +118,6 @@ Library

116 ProjectM36.Serialise.DataFrame,

118 ProjectM36.Serialise.DataFrame,

117 ProjectM36.Serialise.DatabaseContextFunctionError,

119 ProjectM36.Serialise.DatabaseContextFunctionError,

118 ProjectM36.Serialise.IsomorphicSchema,

120 ProjectM36.Serialise.IsomorphicSchema,

119− ProjectM36.Server.Types,

120 ProjectM36.Session,

121 ProjectM36.Session,

121 ProjectM36.Sessions,

122 ProjectM36.Sessions,

122 ProjectM36.Transaction.Persist,

123 ProjectM36.Transaction.Persist,

@@ -135,14 +136,14 @@ Library

135 Other-Modules: ProjectM36.Win32Handle

136 Other-Modules: ProjectM36.Win32Handle

136 else

137 else

137 --219- too many exported symbols under Windows and GHC 8.4

138 --219- too many exported symbols under Windows and GHC 8.4

138− GHC-Options: -rdynamic

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

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

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

140 Build-Depends: unix

141 Build-Depends: unix

141 CC-Options: -fPIC

142 CC-Options: -fPIC

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

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

143 Default-Language: Haskell2010

144 Default-Language: Haskell2010

144 Default-Extensions: OverloadedStrings, CPP

145 Default-Extensions: OverloadedStrings, CPP

145− if !flag(stack)

146+ if !flag(stack)

146 Build-Depends: deferred-folds

147 Build-Depends: deferred-folds

147

148

148Executable tutd

149Executable tutd

@@ -174,7 +175,7 @@ Executable tutd

174 directory,

175 directory,

175 filepath,

176 filepath,

176 temporary,

177 temporary,

177− megaparsec >= 5.2.0 && < 9,

178+ megaparsec >= 5.2.0 && < 10,

178 haskeline,

179 haskeline,

179 random, MonadRandom,

180 random, MonadRandom,

180 base64-bytestring,

181 base64-bytestring,

@@ -183,7 +184,14 @@ Executable tutd

183 stm-containers >= 1.0.0,

184 stm-containers >= 1.0.0,

184 list-t,

185 list-t,

185 parser-combinators,

186 parser-combinators,

186− curryer

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

187 Other-Modules: TutorialD.Interpreter,

195 Other-Modules: TutorialD.Interpreter,

188 TutorialD.Interpreter.Base,

196 TutorialD.Interpreter.Base,

189 TutorialD.Interpreter.DatabaseContextExpr,

197 TutorialD.Interpreter.DatabaseContextExpr,

@@ -202,6 +210,7 @@ Executable tutd

202 TutorialD.Interpreter.SchemaOperator,

210 TutorialD.Interpreter.SchemaOperator,

203 TutorialD.Interpreter.TransGraphRelationalOperator,

211 TutorialD.Interpreter.TransGraphRelationalOperator,

204 TutorialD.Interpreter.SchemaOperator

212 TutorialD.Interpreter.SchemaOperator

213+ TutorialD.Printer

205 main-is: TutorialD/tutd.hs

214 main-is: TutorialD/tutd.hs

206 CC-Options: -fPIC

215 CC-Options: -fPIC

207 GHC-Options: -Wall -threaded

216 GHC-Options: -Wall -threaded

@@ -228,7 +237,6 @@ Executable project-m36-server

228 optparse-applicative,

237 optparse-applicative,

229 hashable-time,

238 hashable-time,

230 time,

239 time,

231− vector-binary-instances,

232 text,

240 text,

233 deepseq-generics,

241 deepseq-generics,

234 mtl,

242 mtl,

@@ -250,7 +258,7 @@ Executable project-m36-server

250Executable bigrel

258Executable bigrel

251 Default-Language: Haskell2010

259 Default-Language: Haskell2010

252 Default-Extensions: OverloadedStrings

260 Default-Extensions: OverloadedStrings

253− Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, vector-binary-instances, 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

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

254 Other-Modules: TutorialD.Interpreter.Base,

262 Other-Modules: TutorialD.Interpreter.Base,

255 TutorialD.Interpreter.DatabaseContextExpr,

263 TutorialD.Interpreter.DatabaseContextExpr,

256 TutorialD.Interpreter.RelationalExpr,

264 TutorialD.Interpreter.RelationalExpr,

@@ -262,11 +270,11 @@ Executable bigrel

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

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

263

271

264Common commontest

272Common commontest

265− Default-Language: Haskell2010

273+ Default-Language: Haskell2010

266− Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, vector-binary-instances, 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

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

267 Default-Extensions: OverloadedStrings

275 Default-Extensions: OverloadedStrings

268 GHC-Options: -Wall -threaded

276 GHC-Options: -Wall -threaded

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

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

270

278

271Benchmark basic-benchmark

279Benchmark basic-benchmark

272 Default-Language: Haskell2010

280 Default-Language: Haskell2010

@@ -279,63 +287,81 @@ Benchmark basic-benchmark

279 if flag(profiler)

287 if flag(profiler)

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

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

281

289

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+

282Test-Suite test-tutoriald

302Test-Suite test-tutoriald

283 import: commontest

303 import: commontest

284 type: exitcode-stdio-1.0

304 type: exitcode-stdio-1.0

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

305+ main-is: TutorialD/InterpreterTest.hs

286− 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

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

287

308

288Test-Suite test-tutoriald-atomfunctionscript

309Test-Suite test-tutoriald-atomfunctionscript

289 import: commontest

310 import: commontest

290 type: exitcode-stdio-1.0

311 type: exitcode-stdio-1.0

291− 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

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

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

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

293

314

294Test-Suite test-tutoriald-databasecontextfunctionscript

315Test-Suite test-tutoriald-databasecontextfunctionscript

295 import: commontest

316 import: commontest

296 type: exitcode-stdio-1.0

317 type: exitcode-stdio-1.0

297− 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

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

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

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

299

320

300Test-Suite test-relation

321Test-Suite test-relation

301 import: commontest

322 import: commontest

302 type: exitcode-stdio-1.0

323 type: exitcode-stdio-1.0

303− main-is: test/Relation/Basic.hs

324+ main-is: Relation/Basic.hs

304

325

305Test-Suite test-static-optimizer

326Test-Suite test-static-optimizer

306 import: commontest

327 import: commontest

307 type: exitcode-stdio-1.0

328 type: exitcode-stdio-1.0

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

329+ main-is: Relation/StaticOptimizer.hs

309

330

310Test-Suite test-transactiongraph-persist

331Test-Suite test-transactiongraph-persist

311 import: commontest

332 import: commontest

312 type: exitcode-stdio-1.0

333 type: exitcode-stdio-1.0

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

334+ main-is: TransactionGraph/Persist.hs

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

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

315

336

316Test-Suite test-relation-import-csv

337Test-Suite test-relation-import-csv

317 import: commontest

338 import: commontest

318 type: exitcode-stdio-1.0

339 type: exitcode-stdio-1.0

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

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

320

341

321Test-Suite test-tutoriald-import-tutoriald

342Test-Suite test-tutoriald-import-tutoriald

322 import: commontest

343 import: commontest

323 type: exitcode-stdio-1.0

344 type: exitcode-stdio-1.0

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

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

325− 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

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

326−

327

347

328Test-Suite test-relation-export-csv

348Test-Suite test-relation-export-csv

329 import: commontest

349 import: commontest

330 type: exitcode-stdio-1.0

350 type: exitcode-stdio-1.0

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

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

332

352

333Test-Suite test-transactiongraph-merge

353Test-Suite test-transactiongraph-merge

334 import: commontest

354 import: commontest

335 type: exitcode-stdio-1.0

355 type: exitcode-stdio-1.0

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

356+ main-is: TransactionGraph/Merge.hs

337

357

338

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

364+

339benchmark bench

365benchmark bench

340 import: commontest

366 import: commontest

341 type: exitcode-stdio-1.0

367 type: exitcode-stdio-1.0

@@ -344,41 +370,48 @@ benchmark bench

344Test-Suite test-server

370Test-Suite test-server

345 import: commontest

371 import: commontest

346 type: exitcode-stdio-1.0

372 type: exitcode-stdio-1.0

347− main-is: test/Server/Main.hs

373+ main-is: Server/Main.hs

348

374

349

375

350Executable Example-SimpleClient

376Executable Example-SimpleClient

351 Default-Language: Haskell2010

377 Default-Language: Haskell2010

352 Default-Extensions: OverloadedStrings

378 Default-Extensions: OverloadedStrings

353− Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, vector-binary-instances, 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

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

354 Main-Is: examples/SimpleClient.hs

380 Main-Is: examples/SimpleClient.hs

355 GHC-Options: -Wall -threaded

381 GHC-Options: -Wall -threaded

356

382

357Executable Example-OutOfTheTarpit

383Executable Example-OutOfTheTarpit

358 Default-Language: Haskell2010

384 Default-Language: Haskell2010

359 Default-Extensions: OverloadedStrings

385 Default-Extensions: OverloadedStrings

360− Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, vector-binary-instances, 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

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

361 Main-Is: examples/out_of_the_tarpit.hs

387 Main-Is: examples/out_of_the_tarpit.hs

362 GHC-Options: -Wall -threaded

388 GHC-Options: -Wall -threaded

363

389

364Executable Example-Blog

390Executable Example-Blog

365 Default-Language: Haskell2010

391 Default-Language: Haskell2010

366 Default-Extensions: OverloadedStrings

392 Default-Extensions: OverloadedStrings

367− Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, vector-binary-instances, 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

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

368 Main-Is: examples/blog.hs

394 Main-Is: examples/blog.hs

369 GHC-Options: -Wall -threaded

395 GHC-Options: -Wall -threaded

370

396

371Executable Example-Hair

397Executable Example-Hair

372 Default-Language: Haskell2010

398 Default-Language: Haskell2010

373 Default-Extensions: OverloadedStrings

399 Default-Extensions: OverloadedStrings

374− Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, vector-binary-instances, 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

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

375 Main-Is: examples/hair.hs

401 Main-Is: examples/hair.hs

376 GHC-Options: -Wall -threaded

402 GHC-Options: -Wall -threaded

377

403

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+

378Executable Example-CustomTupleable

411Executable Example-CustomTupleable

379 Default-Language: Haskell2010

412 Default-Language: Haskell2010

380 Default-Extensions: OverloadedStrings

413 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,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

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

382 Main-Is: examples/CustomTupleable.hs

415 Main-Is: examples/CustomTupleable.hs

383 GHC-Options: -Wall -threaded

416 GHC-Options: -Wall -threaded

384

417

@@ -395,14 +428,14 @@ Executable Example-DerivingCustomTupleable

395Test-Suite test-scripts

428Test-Suite test-scripts

396 import: commontest

429 import: commontest

397 type: exitcode-stdio-1.0

430 type: exitcode-stdio-1.0

398− main-is: test/scripts.hs

431+ main-is: scripts.hs

399− 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

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

400

433

401Executable project-m36-websocket-server

434Executable project-m36-websocket-server

402 Default-Language: Haskell2010

435 Default-Language: Haskell2010

403− 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, network

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

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

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

405− 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

406 GHC-Options: -Wall -threaded

439 GHC-Options: -Wall -threaded

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

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

408 Default-Extensions: OverloadedStrings

441 Default-Extensions: OverloadedStrings

@@ -410,46 +443,46 @@ Executable project-m36-websocket-server

410Test-Suite test-websocket-server

443Test-Suite test-websocket-server

411 import: commontest

444 import: commontest

412 type: exitcode-stdio-1.0

445 type: exitcode-stdio-1.0

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

446+ main-is: Server/WebSocket.hs

414− 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

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

415

448

416Test-Suite test-isomorphic-schemas

449Test-Suite test-isomorphic-schemas

417 import: commontest

450 import: commontest

418 type: exitcode-stdio-1.0

451 type: exitcode-stdio-1.0

419− main-is: test/IsomorphicSchema.hs

452+ main-is: IsomorphicSchema.hs

420

453

421Test-Suite test-atomable

454Test-Suite test-atomable

422 import: commontest

455 import: commontest

423 type: exitcode-stdio-1.0

456 type: exitcode-stdio-1.0

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

457+ main-is: Relation/Atomable.hs

425− 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

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

426

459

427Test-Suite test-multiprocess-access

460Test-Suite test-multiprocess-access

428 import: commontest

461 import: commontest

429 type: exitcode-stdio-1.0

462 type: exitcode-stdio-1.0

430− main-is: test/MultiProcessDatabaseAccess.hs

463+ main-is: MultiProcessDatabaseAccess.hs

431

464

432Test-Suite test-transactiongraph-automerge

465Test-Suite test-transactiongraph-automerge

433 import: commontest

466 import: commontest

434 type: exitcode-stdio-1.0

467 type: exitcode-stdio-1.0

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

468+ main-is: TransactionGraph/Automerge.hs

436− 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

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

437

470

438Test-Suite test-tupleable

471Test-Suite test-tupleable

439 import: commontest

472 import: commontest

440 type: exitcode-stdio-1.0

473 type: exitcode-stdio-1.0

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

474+ main-is: Relation/Tupleable.hs

442

475

443Test-Suite test-client-simple

476Test-Suite test-client-simple

444 import: commontest

477 import: commontest

445− Main-Is: test/Client/Simple.hs

478+ Main-Is: Client/Simple.hs

446 type: exitcode-stdio-1.0

479 type: exitcode-stdio-1.0

447

480

448-- test for file handle leaks

481-- test for file handle leaks

449Executable handles

482Executable handles

450 Default-Language: Haskell2010

483 Default-Language: Haskell2010

451 Default-Extensions: OverloadedStrings

484 Default-Extensions: OverloadedStrings

452− Build-Depends: base, HUnit, Cabal, containers, hashable, unordered-containers, mtl, vector, vector-binary-instances, 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

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

453 main-is: benchmark/Handles.hs

486 main-is: benchmark/Handles.hs

454 Other-Modules: TutorialD.Interpreter,

487 Other-Modules: TutorialD.Interpreter,

455 TutorialD.Interpreter.Base,

488 TutorialD.Interpreter.Base,

@@ -468,13 +501,14 @@ Executable handles

468 TutorialD.Interpreter.TransGraphRelationalOperator,

501 TutorialD.Interpreter.TransGraphRelationalOperator,

469 TutorialD.Interpreter.TransactionGraphOperator,

502 TutorialD.Interpreter.TransactionGraphOperator,

470 TutorialD.Interpreter.Types

503 TutorialD.Interpreter.Types

504+ TutorialD.Printer

471 GHC-Options: -Wall -threaded -rtsopts

505 GHC-Options: -Wall -threaded -rtsopts

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

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

473 if flag(profiler)

507 if flag(profiler)

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

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

475−

476−Test-Suite test-dataframe

477− import: commontest

478− Main-Is: test/DataFrame.hs

479− type: exitcode-stdio-1.0

480

509

510+Test-Suite test-dataframe

511+ import: commontest

512+ type: exitcode-stdio-1.0

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.nix+17−58

@@ -1,71 +1,30 @@

1−{ compiler ? "ghc865"

1+{ compiler ? "ghc8104"

2−, pkgs ? import ./pkgs.nix

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

3+, pkgs ? import sources.nixpkgs { }

3}:

4}:

4−

5let

6− inherit (pkgs.lib.trivial) flip pipe;

7− inherit (pkgs.haskell.lib) appendPatch appendConfigureFlags;

8 doJailbreak = pkgs.haskell.lib.doJailbreak;

6 doJailbreak = pkgs.haskell.lib.doJailbreak;

9− dontHaddock = pkgs.haskell.lib.dontHaddock;

7+ needsCocoa = drv:

10− dontCheck = pkgs.haskell.lib.dontCheck;

8+ if pkgs.stdenv.isDarwin

11− distProcessPkg = pkg : dontHaddock (doJailbreak (dontCheck pkg));

9+ then drv.overrideDerivation (old:

12− callHackageDirectWithOptions = {pkg,ver, sha256, options}:

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

13− let pkgver = "${pkg}-${ver}";

11+ )

14− in

12+ else drv;

15− haskellPackages.callCabal2nixWithOptions pkg (pkgs.fetchzip {

13+

16− url = "mirror://hackage/${pkgver}/${pkgver}.tar.gz";

17− inherit sha256;

18− }) options;

19−

20 haskellPackages = pkgs.haskell.packages.${compiler}.override {

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

21 overrides = self: super: {

15 overrides = self: super: {

22− rank1dynamic =

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

23− distProcessPkg (self.callHackageDirect {

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

24− pkg = "rank1dynamic";

25− ver = "0.4.0";

26− sha256 = "1x6p9z53s7xwp93jp4n1lq6m5xspcn6w62p461v8vqnp9600328b";

27−}{});

28− stm-hamt =

29− self.callHackageDirect {

30− pkg = "stm-hamt";

31− ver = "1.2.0.3";

32− sha256 = "1i8j7q8nhx3l7gydrjlsyhkvllr6bppgrjf0hp38zpm7p6xcv2bb";

33− }{};

34−

35− stm-containers =

36− self.callHackageDirect {

37− pkg = "stm-containers";

38− ver = "1.1.0.4";

39− sha256 = "0h9z6lawdm44minx9spvdb7sp645l36ri5cnxvhrcxwzr64s7qb5";

40− }{};

41−

42− data-interval =

43− self.callHackageDirect {

44− pkg = "data-interval";

45− ver = "2.0.1";

46− sha256 = "085j4yjr8wimxampxqdrg47p577whwg2mjxgfdl44yfck52fb6an";

47− }{};

48−

49− curryer =

50− self.callHackageDirect {

51− pkg = "curryer";

52− ver = "0.1";

53− sha256 = "085j4yjr8wimxampxqdrg47p577whwg2mjxgfdl44yfck52fb6ac";

54− }{};

55−

56− project-m36 = dontCheck (self.callCabal2nixWithOptions "project-m36" ./. "-f-haskell-scripting" { });

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

57−

58 };

19 };

59 };

20 };

60−

61− project = haskellPackages.project-m36;

62in

21in

63{

22{

64− project = project;

23+ project = haskellPackages.project-m36;

65

24

66 shell = haskellPackages.shellFor {

25 shell = haskellPackages.shellFor {

67− packages = p: with p; [

26+ packages = p: [

68− project

27+ p.project-m36

69 ];

28 ];

70 buildInputs = [

29 buildInputs = [

71 haskellPackages.ghcid

30 haskellPackages.ghcid

@@ -74,4 +33,4 @@ in

74 ];

33 ];

75 withHoogle = true;

34 withHoogle = true;

76 };

35 };

77−}

36+}

scripts/DateExamples.tutd+2−2

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

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

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

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

23−key s_pkey {s#} s

23+key s_pkey {s#} s;

24−key p_key {p#} p

24+key p_key {p#} p;

25foreign key s_sp_fk sp{s#} in s{s#};

26foreign 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

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

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

11import ProjectM36.IsomorphicSchema

12import ProjectM36.Server.RemoteCallTypes

13import ProjectM36.MerkleHash

14+import ProjectM36.Attribute as A

14

15

15import Data.Aeson

16import Data.Aeson

16import Data.ByteString.Base64 as B64

17import Data.ByteString.Base64 as B64

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

44instance ToJSON Relation

45instance ToJSON Relation

45instance FromJSON Relation

46instance FromJSON Relation

46

47

47−instance ToJSON Attribute

48+instance ToJSON Attribute where

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

50+ , "type" .= toJSON aType ]

48−instance FromJSON Attribute

51+instance FromJSON Attribute where

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

49

53

50instance ToJSON ExtendTupleExpr

54instance ToJSON ExtendTupleExpr

51instance FromJSON ExtendTupleExpr

55instance FromJSON ExtendTupleExpr

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

99 "val" .= i ]

103 "val" .= i ]

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

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

101 "val" .= i ]

105 "val" .= i ]

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

107+ "val" .= i ]

102 toJSON (ConstructedAtom dConsName atomtype atomlist) = object [

108 toJSON (ConstructedAtom dConsName atomtype atomlist) = object [

103 "dataconstructorname" .= dConsName,

109 "dataconstructorname" .= dConsName,

104 "type" .= toJSON atomtype,

110 "type" .= toJSON atomtype,

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

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

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

127 Right bs -> pure (ByteStringAtom bs)

133 Right bs -> pure (ByteStringAtom bs)

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

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

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

129

136

130instance ToJSON Notification

137instance ToJSON Notification

131instance FromJSON Notification

138instance FromJSON Notification

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

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

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

143 Right bs -> pure (MerkleHash bs)

150 Right bs -> pure (MerkleHash bs)

144

151

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+

145instance ToJSON RelationalError

158instance ToJSON RelationalError

146instance FromJSON RelationalError

159instance FromJSON RelationalError

147

160

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

151instance ToJSON MergeError

164instance ToJSON MergeError

152instance FromJSON MergeError

165instance FromJSON MergeError

153

166

167+instance ToJSON ImportError'

168+instance FromJSON ImportError'

169+

154instance ToJSON DatabaseContextFunctionError

170instance ToJSON DatabaseContextFunctionError

155instance FromJSON DatabaseContextFunctionError

171instance FromJSON DatabaseContextFunctionError

156

172

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

165

181

166instance ToJSON WithNameExpr

182instance ToJSON WithNameExpr

167instance FromJSON WithNameExpr

183instance FromJSON WithNameExpr

184+

185+

src/bin/ProjectM36/Server/WebSocket.hs+2−1

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

22import Control.Applicative

23import Text.Megaparsec.Error

24import Data.Functor

25+import Data.Either (fromRight)

25

26

26#if MIN_VERSION_megaparsec(7,0,0)

27#if MIN_VERSION_megaparsec(7,0,0)

27import Data.List.NonEmpty as NE

28import Data.List.NonEmpty as NE

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

117promptInfo sessionId conn = do

118promptInfo sessionId conn = do

118 eHeadName <- headName sessionId conn

119 eHeadName <- headName sessionId conn

119 eSchemaName <- currentSchemaName sessionId conn

120 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)

121

122

122sendPromptInfo :: (HeadName, SchemaName) -> WS.Connection -> IO ()

123sendPromptInfo :: (HeadName, SchemaName) -> WS.Connection -> IO ()

123sendPromptInfo (hName, sName) conn = WS.sendTextData conn (encode (object ["promptInfo" .= object ["headname" .= hName, "schemaname" .= sName]]))

124sendPromptInfo (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;

126 <li>:showrelvars</li>

127 <li>:showexpr true</li>

128 <li>:showexpr false</li>

129− <li>:importexample date</li>

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

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

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

132 <li>:showexpr s</li>

src/bin/ProjectM36/Server/WebSocket/websocket-server.hs+42−9

@@ -1,23 +1,40 @@

1{-# LANGUAGE CPP #-}

2−import ProjectM36.Server.WebSocket

2+

3−import ProjectM36.Server.Config

4−import ProjectM36.Server.ParseArgs

5−import ProjectM36.Server

6import Control.Concurrent

3import Control.Concurrent

7−import qualified Network.WebSockets as WS

8import Control.Exception

4import Control.Exception

5+import Control.Monad (when)

6+import Data.Maybe (isJust)

7+import Data.String (fromString)

8+import Network.HTTP.Types (status400)

9import 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

10

19

11main :: IO ()

20main :: IO ()

12main = do

21main = do

13 -- launch normal project-m36-server

22 -- launch normal project-m36-server

14 addressMVar <- newEmptyMVar

23 addressMVar <- newEmptyMVar

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

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

25+

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

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

27+ let serverConfig = wsServerConfig wsConfig

17− let wsHost = bindHost serverConfig

28+ wsHost = bindHost serverConfig

18 wsPort = bindPort serverConfig

29 wsPort = bindPort serverConfig

19 serverHost = "127.0.0.1"

30 serverHost = "127.0.0.1"

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

31 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+

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

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

22 --wait for server to be listening

39 --wait for server to be listening

23 addr <- takeMVar addressMVar

40 addr <- takeMVar addressMVar

@@ -25,6 +42,22 @@ main = do

25 case addr of

42 case addr of

26 SockAddrInet port' _ -> fromIntegral port'

43 SockAddrInet port' _ -> fromIntegral port'

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

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

28− --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

45+ wsApp = websocketProxyServer port serverHost

46+ waiApp = WS.websocketsOr defaultConnectionOptions wsApp backupApp

29− WS.runServer wsHost (fromIntegral wsPort) (websocketProxyServer port serverHost)

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"

30

55

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+3−1

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

34import Data.List (isPrefixOf)

35import Control.Exception

36import System.Exit

37+import Data.Either (fromRight)

37

38

38{-

39{-

39context ops are read-only operations which only operate on the database context (relvars and constraints)

40context ops are read-only operations which only operate on the database context (relvars and constraints)

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

77promptText :: Either RelationalError HeadName -> Either RelationalError SchemaName -> StringType

78promptText :: Either RelationalError HeadName -> Either RelationalError SchemaName -> StringType

78promptText eHeadName eSchemaName = "TutorialD (" <> transInfo <> "): "

79promptText eHeadName eSchemaName = "TutorialD (" <> transInfo <> "): "

79 where

80 where

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

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

81

82

82parseTutorialD :: T.Text -> Either ParserError ParsedOperation

83parseTutorialD :: T.Text -> Either ParserError ParsedOperation

83parseTutorialD = parse interpreterParserP ""

84parseTutorialD = parse interpreterParserP ""

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

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

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

216 barf :: RelationalError -> IO TutorialDOperatorResult

217 barf :: RelationalError -> IO TutorialDOperatorResult

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

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

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

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

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

219 eHandler io = do

221 eHandler io = do

220 eErr <- io

222 eErr <- io

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

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

12 where

13import ProjectM36.Base

14import ProjectM36.AtomType

15+import ProjectM36.Attribute as A

15import ProjectM36.Relation

16import ProjectM36.Relation

16import ProjectM36.DataFrame

17import ProjectM36.DataFrame

17

18

18#if MIN_VERSION_megaparsec(6,0,0)

19#if MIN_VERSION_megaparsec(6,0,0)

19−import Text.Megaparsec.Char

20+import Text.Megaparsec.Char

20import qualified Text.Megaparsec.Char.Lexer as Lex

21import qualified Text.Megaparsec.Char.Lexer as Lex

21import Text.Megaparsec

22import Text.Megaparsec

22import Data.Void

23import Data.Void

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

30import System.Random

31import System.Random

31import qualified Data.Text as T

32import qualified Data.Text as T

32import qualified Data.List as L

33import qualified Data.List as L

33−import qualified Data.Vector as V

34import qualified Data.Text.IO as TIO

35import System.IO

36import ProjectM36.Relation.Show.Term

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

44import Data.Time.Clock

45import Data.Time.Format

46import Control.Monad (void)

47+import Data.Char

47

48

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

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

49anySingle :: Parsec Void Text (Token Text)

50anySingle :: Parsec Void Text (Token Text)

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

81type ParseStr = String

82type ParseStr = String

82#endif

83#endif

83

84

85+-- consumes only horizontal spaces

84spaceConsumer :: Parser ()

86spaceConsumer :: Parser ()

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

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

86

88

87opChar :: Parser Char

89opChar :: Parser Char

88opChar = oneOf (":!#$%&*+./<=>?\\^|-~" :: String)-- remove "@" so it can be used as attribute marker without spaces

90opChar = oneOf (":!#$%&*+./<=>?\\^|-~" :: String)-- remove "@" so it can be used as attribute marker without spaces

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

135semi :: Parser Text

137semi :: Parser Text

136semi = symbol ";"

138semi = symbol ";"

137

139

140+nline :: Parser Text

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

142+

138integer :: Parser Integer

143integer :: Parser Integer

139#if MIN_VERSION_megaparsec(6,0,0)

144#if MIN_VERSION_megaparsec(6,0,0)

140−integer = Lex.signed spaceConsumer Lex.decimal

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

141#else

146#else

142−integer = Lex.signed spaceConsumer Lex.integer

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

143#endif

148#endif

144

149

145natural :: Parser Integer

150natural :: Parser Integer

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

150#endif

155#endif

151

156

152float :: Parser Double

157float :: Parser Double

153−float = Lex.float

158+float = Lex.float <* spaceConsumer

154

159

155capitalizedIdentifier :: Parser Text

160capitalizedIdentifier :: Parser Text

156capitalizedIdentifier =

161capitalizedIdentifier =

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

163showRelationAttributes :: Attributes -> Text

168showRelationAttributes :: Attributes -> Text

164showRelationAttributes attrs = "{" <> T.concat (L.intersperse ", " $ L.map showAttribute attrsL) <> "}"

169showRelationAttributes attrs = "{" <> T.concat (L.intersperse ", " $ L.map showAttribute attrsL) <> "}"

165 where

170 where

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

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

167− attrsL = V.toList attrs

172+ attrsL = A.toList attrs

168

173

169type PromptLength = Int

174type PromptLength = Int

170

175

@@ -200,6 +205,9 @@ normalQuotedString = quote *> (T.pack <$> manyTill Lex.charLiteral quote)

200quotedString :: Parser Text

205quotedString :: Parser Text

201quotedString = try tripleQuotedString <|> normalQuotedString

206quotedString = try tripleQuotedString <|> normalQuotedString

202

207

208+quoted :: Parser a -> Parser a

209+quoted = between quote quote

210+

203uuidP :: Parser U.UUID

211uuidP :: Parser U.UUID

204uuidP = do

212uuidP = do

205 uuidStart <- count 8 hexDigitChar

213 uuidStart <- count 8 hexDigitChar

@@ -222,3 +230,16 @@ utcTimeP = do

222 case parseTimeM True defaultTimeLocale "%Y-%m-%d %H:%M:%S" (T.unpack timeStr) of

230 case parseTimeM True defaultTimeLocale "%Y-%m-%d %H:%M:%S" (T.unpack timeStr) of

223 Nothing -> fail "invalid datetime input, use \"YYYY-MM-DD HH:MM:SS\""

231 Nothing -> fail "invalid datetime input, use \"YYYY-MM-DD HH:MM:SS\""

224 Just stamp' -> pure stamp'

232 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

53multilineSep = newline >> pure "\n"

54

55multipleDatabaseContextExprP :: Parser DatabaseContextExpr

56−multipleDatabaseContextExprP =

56+multipleDatabaseContextExprP = do

57− MultipleExpr <$> sepBy1 databaseContextExprP semi

57+ exprs <- filter (/= NoOperation) <$> sepBy1 databaseContextExprP semi

58+ pure (MultipleExpr exprs)

58

59

59insertP :: Parser DatabaseContextExpr

60insertP :: Parser DatabaseContextExpr

60insertP = do

61insertP = do

src/bin/TutorialD/Interpreter/Import/Base.hs+8−3

@@ -2,6 +2,8 @@

2module TutorialD.Interpreter.Import.Base where

3import ProjectM36.Base

4import ProjectM36.Error

5+import Text.URI (URI)

6+import Data.Text (Text)

5#if __GLASGOW_HASKELL__ < 804

7#if __GLASGOW_HASKELL__ < 804

6import Data.Monoid

8import Data.Monoid

7#endif

9#endif

@@ -12,11 +14,14 @@ data RelVarDataImportOperator = RelVarDataImportOperator RelVarName FilePath (Re

12instance Show RelVarDataImportOperator where

14instance Show RelVarDataImportOperator where

13 show (RelVarDataImportOperator rv path _) = "RelVarDataImportOperator " <> show rv <> " " <> path

15 show (RelVarDataImportOperator rv path _) = "RelVarDataImportOperator " <> show rv <> " " <> path

14

16

17+type HashVerification = Maybe Text

18+

15-- | import data into a database context

19-- | 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))

17

21

18instance Show DatabaseContextDataImportOperator where

22instance Show DatabaseContextDataImportOperator where

19− show (DatabaseContextDataImportOperator path _) = "DatabaseContextDataImportOperator " <> path

23+ show (DatabaseContextDataImportOperator uri hash _) =

24+ "DatabaseContextDataImportOperator " <> show uri <> " " <> show hash

20

25

21-- perhaps create a structure to import a whole transaction graph section in the future

26-- perhaps create a structure to import a whole transaction graph section in the future

22

27

@@ -24,4 +29,4 @@ evalRelVarDataImportOperator :: RelVarDataImportOperator -> TypeConstructorMappi

24evalRelVarDataImportOperator (RelVarDataImportOperator relVarName path importFunc) tConsMap attrs = importFunc relVarName tConsMap attrs path

29evalRelVarDataImportOperator (RelVarDataImportOperator relVarName path importFunc) tConsMap attrs = importFunc relVarName tConsMap attrs path

25

30

26evalDatabaseContextDataImportOperator :: DatabaseContextDataImportOperator -> IO (Either RelationalError DatabaseContextExpr)

31evalDatabaseContextDataImportOperator :: 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

20importBasicExampleOperatorP = do

21 reservedOp ":importexample"

22 example <- identifier

23− if example == "date" then

23+ if example == "cjdate" then

24 pure ImportBasicDateExampleOperator

25 else

26 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

14 --TODO: handle filesystem errors

15 csvData <- try (BS.readFile pathIn) :: IO (Either IOError BS.ByteString)

16 case csvData of

17− Left err -> return $ Left (ImportError $ T.pack (show err))

17+ Left err -> pure $ Left (ImportError (ImportFileError (T.pack (show err))))

18 Right csvData' -> case csvAsRelation attrs tConsMap csvData' of

19− Left err -> return $ Left (ParseError $ T.pack (show err))

19+ Left err -> pure $ Left (ParseError $ T.pack (show err))

20− Right csvRel -> return $ Right (Insert relVarName (ExistingRelation csvRel))

20+ Right csvRel -> pure $ Right (Insert relVarName (ExistingRelation csvRel))

21

22importCSVP :: Parser RelVarDataImportOperator

23importCSVP = do

src/bin/TutorialD/Interpreter/Import/TutorialD.hs+70−17

@@ -9,25 +9,78 @@ import qualified Data.Text as T

9import Control.Exception

10import qualified Data.ByteString as BS

11import qualified Data.Text.Encoding as TE

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

12−--import a file containing TutorialD database context expressions

18+--import a file containing TutorialD database context expressions via local files or HTTP/HTTPS

13

19

14−importTutorialD :: FilePath -> IO (Either RelationalError DatabaseContextExpr)

20+importTutorialDFromFile :: URI -> HashVerification -> IO (Either RelationalError DatabaseContextExpr)

15−importTutorialD pathIn = do

21+importTutorialDFromFile fileURI mHash = do

22+ case URI.uriPath fileURI of

23+ Just (False, _) -> do

16− eTutdBytes <- try (BS.readFile pathIn) :: IO (Either IOError BS.ByteString)

24+ eTutdBytes <- try (BS.readFile filePath) :: IO (Either IOError BS.ByteString)

17− case eTutdBytes of

25+ case eTutdBytes of

18− Left err -> return $ Left (ImportError $ T.pack (show err))

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)

19− Right tutdBytes ->

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 =

20− case TE.decodeUtf8' tutdBytes of

38+ case TE.decodeUtf8' tutdBytes of

21− Left err -> pure (Left (ImportError $ T.pack (show err)))

39+ Left err -> pure (Left (ImportError (ImportFileDecodeError (T.pack (show err)))))

22− Right tutdUtf8 ->

40+ Right tutdUtf8 ->

23− case parse multipleDatabaseContextExprP "import" tutdUtf8 of

41+ case parse (multipleDatabaseContextExprP <* eof) "import" tutdUtf8 of

24− --parseErrorPretty is new in megaparsec 5

42+ --parseErrorPretty is new in megaparsec 5

25− Left err -> pure (Left (PM36E.ParseError (T.pack (show err))))

43+ Left err -> pure (Left (PM36E.ParseError (T.pack (errorBundlePretty err))))

26− Right expr -> pure (Right expr)

44+ Right expr -> pure (Right expr)

27−

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+

28tutdImportP :: Parser DatabaseContextDataImportOperator

75tutdImportP :: Parser DatabaseContextDataImportOperator

29tutdImportP = do

76tutdImportP = do

30 reserved ":importtutd"

77 reserved ":importtutd"

31− path <- quotedString

78+ uri <- quoted URI.parser

32 spaceConsumer

79 spaceConsumer

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)

33− return $ DatabaseContextDataImportOperator (T.unpack path) importTutorialD

86+ pure $ DatabaseContextDataImportOperator uri mhash handler

src/bin/TutorialD/Interpreter/RODatabaseContextOperator.hs+33−16

@@ -1,13 +1,16 @@

1{-# LANGUAGE GADTs #-}

2module TutorialD.Interpreter.RODatabaseContextOperator where

3import ProjectM36.Base

4+import ProjectM36.Relation

4import qualified ProjectM36.DataFrame as DF

5import qualified ProjectM36.DataFrame as DF

5import ProjectM36.Error

6import ProjectM36.Error

7+import ProjectM36.Tuple

6import ProjectM36.InclusionDependency

8import ProjectM36.InclusionDependency

7import qualified ProjectM36.Client as C

9import qualified ProjectM36.Client as C

8import TutorialD.Interpreter.Base

10import TutorialD.Interpreter.Base

9import TutorialD.Interpreter.RelationalExpr

11import TutorialD.Interpreter.RelationalExpr

10import TutorialD.Interpreter.DatabaseContextExpr

12import TutorialD.Interpreter.DatabaseContextExpr

13+import TutorialD.Printer

11import Control.Monad.State

14import Control.Monad.State

12import qualified Data.Text as T

15import qualified Data.Text as T

13import ProjectM36.Relation.Show.Gnuplot

16import ProjectM36.Relation.Show.Gnuplot

@@ -19,7 +22,7 @@ data RODatabaseContextOperator where

19 ShowRelation :: RelationalExpr -> RODatabaseContextOperator

22 ShowRelation :: RelationalExpr -> RODatabaseContextOperator

20 PlotRelation :: RelationalExpr -> RODatabaseContextOperator

23 PlotRelation :: RelationalExpr -> RODatabaseContextOperator

21 ShowRelationType :: RelationalExpr -> RODatabaseContextOperator

24 ShowRelationType :: RelationalExpr -> RODatabaseContextOperator

22− ShowConstraint :: StringType -> RODatabaseContextOperator

25+ ShowConstraints :: StringType -> RODatabaseContextOperator

23 ShowPlan :: DatabaseContextExpr -> RODatabaseContextOperator

26 ShowPlan :: DatabaseContextExpr -> RODatabaseContextOperator

24 ShowTypes :: RODatabaseContextOperator

27 ShowTypes :: RODatabaseContextOperator

25 ShowRelationVariables :: RODatabaseContextOperator

28 ShowRelationVariables :: RODatabaseContextOperator

@@ -31,44 +34,44 @@ data RODatabaseContextOperator where

31

34

32typeP :: Parser RODatabaseContextOperator

35typeP :: Parser RODatabaseContextOperator

33typeP = do

36typeP = do

34− reservedOp ":type"

37+ colonOp ":type"

35 ShowRelationType <$> relExprP

38 ShowRelationType <$> relExprP

36

39

37showRelP :: Parser RODatabaseContextOperator

40showRelP :: Parser RODatabaseContextOperator

38showRelP = do

41showRelP = do

39− reservedOp ":showexpr"

42+ colonOp ":showexpr"

40 ShowRelation <$> relExprP

43 ShowRelation <$> relExprP

41

44

42showPlanP :: Parser RODatabaseContextOperator

45showPlanP :: Parser RODatabaseContextOperator

43showPlanP = do

46showPlanP = do

44− reservedOp ":showplan"

47+ colonOp ":showplan"

45 ShowPlan <$> databaseContextExprP

48 ShowPlan <$> databaseContextExprP

46

49

47showTypesP :: Parser RODatabaseContextOperator

50showTypesP :: Parser RODatabaseContextOperator

48−showTypesP = reserved ":showtypes" >> pure ShowTypes

51+showTypesP = colonOp ":showtypes" >> pure ShowTypes

49

52

50showRelationVariables :: Parser RODatabaseContextOperator

53showRelationVariables :: Parser RODatabaseContextOperator

51−showRelationVariables = reserved ":showrelvars" >> pure ShowRelationVariables

54+showRelationVariables = colonOp ":showrelvars" >> pure ShowRelationVariables

52

55

53showAtomFunctionsP :: Parser RODatabaseContextOperator

56showAtomFunctionsP :: Parser RODatabaseContextOperator

54−showAtomFunctionsP = reserved ":showatomfunctions" >> pure ShowAtomFunctions

57+showAtomFunctionsP = colonOp ":showatomfunctions" >> pure ShowAtomFunctions

55

58

56showDatabaseContextFunctionsP :: Parser RODatabaseContextOperator

59showDatabaseContextFunctionsP :: Parser RODatabaseContextOperator

57−showDatabaseContextFunctionsP = reserved ":showdatabasecontextfunctions" >> pure ShowDatabaseContextFunctions

60+showDatabaseContextFunctionsP = colonOp ":showdatabasecontextfunctions" >> pure ShowDatabaseContextFunctions

58

61

59quitP :: Parser RODatabaseContextOperator

62quitP :: Parser RODatabaseContextOperator

60quitP = do

63quitP = do

61− reservedOp ":quit"

64+ colonOp ":quit"

62 return Quit

65 return Quit

63

66

64showConstraintsP :: Parser RODatabaseContextOperator

67showConstraintsP :: Parser RODatabaseContextOperator

65showConstraintsP = do

68showConstraintsP = do

66− reservedOp ":constraints"

69+ colonOp ":constraints"

67− ShowConstraint <$> option "" identifier

70+ ShowConstraints <$> option "" identifier

68

71

69plotRelExprP :: Parser RODatabaseContextOperator

72plotRelExprP :: Parser RODatabaseContextOperator

70plotRelExprP = do

73plotRelExprP = do

71− reserved ":plotexpr"

74+ colonOp ":plotexpr"

72 PlotRelation <$> relExprP

75 PlotRelation <$> relExprP

73

76

74roDatabaseContextOperatorP :: Parser RODatabaseContextOperator

77roDatabaseContextOperatorP :: Parser RODatabaseContextOperator

@@ -106,15 +109,16 @@ evalRODatabaseContextOp sessionId conn (PlotRelation expr) = do

106 err <- plotRelation rel

109 err <- plotRelation rel

107 when (isJust err) $ print err

110 when (isJust err) $ print err

108

111

109−evalRODatabaseContextOp sessionId conn (ShowConstraint name) = do

112+evalRODatabaseContextOp sessionId conn (ShowConstraints name) = do

110 eIncDeps <- C.inclusionDependencies sessionId conn

113 eIncDeps <- C.inclusionDependencies sessionId conn

111 let val = case eIncDeps of

114 let val = case eIncDeps of

112 Left err -> Left err

115 Left err -> Left err

113 Right incDeps -> case name of

116 Right incDeps -> case name of

114− "" -> inclusionDependenciesAsRelation incDeps

117+ "" -> inclusionDependenciesAsRelation incDeps >>= renderRelExprsInIncDeps

115 depName -> case M.lookup depName incDeps of

118 depName -> case M.lookup depName incDeps of

116 Nothing -> Left (InclusionDependencyNameNotInUseError depName)

119 Nothing -> Left (InclusionDependencyNameNotInUseError depName)

120+ Just dep ->

117− Just dep -> inclusionDependenciesAsRelation (M.singleton depName dep)

121+ inclusionDependenciesAsRelation (M.singleton depName dep) >>= renderRelExprsInIncDeps

118 pure $ case val of

122 pure $ case val of

119 Left err -> DisplayErrorResult (T.pack (show err))

123 Left err -> DisplayErrorResult (T.pack (show err))

120 Right rel -> DisplayRelationResult rel

124 Right rel -> DisplayRelationResult rel

@@ -164,7 +168,7 @@ interpretRODatabaseContextOp sessionId conn tutdstring = case parse roDatabaseCo

164

168

165showDataFrameP :: Parser RODatabaseContextOperator

169showDataFrameP :: Parser RODatabaseContextOperator

166showDataFrameP = do

170showDataFrameP = do

167− reservedOp ":showdataframe"

171+ colonOp ":showdataframe"

168 relExpr <- relExprP

172 relExpr <- relExprP

169 reservedOp "orderby"

173 reservedOp "orderby"

170 attrOrdersExpr <- attrOrdersExprP

174 attrOrdersExpr <- attrOrdersExprP

@@ -191,3 +195,16 @@ attrOrderExprP = DF.AttributeOrderExpr <$> identifier <*> orderP

191

195

192orderP :: Parser DF.Order

196orderP :: Parser DF.Order

193orderP = try (reservedOp "ascending" >> pure DF.AscendingOrder) <|> try (reservedOp "descending" >> pure DF.DescendingOrder) <|> pure DF.AscendingOrder

197orderP = 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)

20attributeListP =

21 (reservedOp "all but" >>

22 InvertedAttributeNames . S.fromList <$> sepBy attributeNameP comma) <|>

23+

23 (reservedOp "all from" >>

24 (reservedOp "all from" >>

24 RelationalExprAttributeNames <$> relExprP) <|>

25 RelationalExprAttributeNames <$> relExprP) <|>

26+

27+ (reservedOp "union of" >>

28+ UnionAttributeNames <$> braces attributeListP <*> braces attributeListP) <|>

29+

30+ (reservedOp "intersection of" >>

31+ IntersectAttributeNames <$> braces attributeListP <*> braces attributeListP) <|>

32+

25− (AttributeNames . S.fromList <$> sepBy attributeNameP comma)

33+ (AttributeNames . S.fromList <$> sepBy attributeNameP comma)

34+

26

35

27makeRelationP :: RelationalMarkerExpr a => Parser (RelationalExprBase a)

36makeRelationP :: RelationalMarkerExpr a => Parser (RelationalExprBase a)

28makeRelationP = do

37makeRelationP = do

@@ -102,7 +111,11 @@ ungroupP = do

102extendP :: RelationalMarkerExpr a => Parser (RelationalExprBase a -> RelationalExprBase a)

111extendP :: RelationalMarkerExpr a => Parser (RelationalExprBase a -> RelationalExprBase a)

103extendP = do

112extendP = do

104 reservedOp ":"

113 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'

106

119

107semijoinP :: RelationalMarkerExpr a => Parser (RelationalExprBase a -> RelationalExprBase a -> RelationalExprBase a)

120semijoinP :: RelationalMarkerExpr a => Parser (RelationalExprBase a -> RelationalExprBase a -> RelationalExprBase a)

108semijoinP = do

121semijoinP = do

@@ -129,7 +142,8 @@ relOperators = [

129 [InfixL antijoinP],

142 [InfixL antijoinP],

130 [InfixL (reservedOp "union" >> return Union)],

143 [InfixL (reservedOp "union" >> return Union)],

131 [InfixL (reservedOp "minus" >> return Difference)],

144 [InfixL (reservedOp "minus" >> return Difference)],

132− [InfixN (reservedOp "=" >> return Equals)],

145+ [InfixN (reservedOp "=" >> return Equals),

146+ InfixN (reservedOp "/=" >> return NotEquals)],

133 [Postfix extendP]

147 [Postfix extendP]

134 ]

148 ]

135

149

@@ -200,8 +214,9 @@ consumeAtomExprP consume = try functionAtomExprP <|>

200 try (parens (constructedAtomExprP True)) <|>

214 try (parens (constructedAtomExprP True)) <|>

201 constructedAtomExprP consume <|>

215 constructedAtomExprP consume <|>

202 attributeAtomExprP <|>

216 attributeAtomExprP <|>

203− nakedAtomExprP <|>

217+ try nakedAtomExprP <|>

204 relationalAtomExprP

218 relationalAtomExprP

219+

205

220

206attributeAtomExprP :: Parser (AtomExprBase a)

221attributeAtomExprP :: Parser (AtomExprBase a)

207attributeAtomExprP = do

222attributeAtomExprP = do

@@ -220,7 +235,7 @@ constructedAtomExprP consume = do

220-- used only for primitive type parsing ?

235-- used only for primitive type parsing ?

221atomP :: Parser Atom

236atomP :: Parser Atom

222atomP = stringAtomP <|>

237atomP = stringAtomP <|>

223− doubleAtomP <|>

238+ try doubleAtomP <|>

224 integerAtomP <|>

239 integerAtomP <|>

225 boolAtomP

240 boolAtomP

226

241

@@ -235,15 +250,19 @@ stringAtomP :: Parser Atom

235stringAtomP = TextAtom <$> quotedString

250stringAtomP = TextAtom <$> quotedString

236

251

237doubleAtomP :: Parser Atom

252doubleAtomP :: Parser Atom

238−doubleAtomP = DoubleAtom <$> try float

253+doubleAtomP = DoubleAtom <$> float

239

254

240integerAtomP :: Parser Atom

255integerAtomP :: Parser Atom

241integerAtomP = IntegerAtom <$> integer

256integerAtomP = IntegerAtom <$> integer

242

257

243boolAtomP :: Parser Atom

258boolAtomP :: Parser Atom

244boolAtomP = do

259boolAtomP = do

245− val <- char 't' <|> char 'f'

260+ v <- identifier

261+ if v == "t" || v == "f" then

246− return $ BoolAtom (val == 't')

262+ pure $ BoolAtom (v == "t")

263+ else

264+ fail "invalid boolAtom"

265+

247

266

248relationAtomExprP :: RelationalMarkerExpr a => Parser (AtomExprBase a)

267relationAtomExprP :: RelationalMarkerExpr a => Parser (AtomExprBase a)

249relationAtomExprP = RelationAtomExpr <$> makeRelationP

268relationAtomExprP = 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/lib/ProjectM36/Arbitrary.hs+6−1

@@ -9,6 +9,7 @@ import ProjectM36.AtomType

9import ProjectM36.Attribute (atomType)

10import ProjectM36.DataConstructorDef as DCD

11import ProjectM36.DataTypes.Interval

12+import ProjectM36.Relation

12import qualified Data.Vector as V

13import qualified Data.Vector as V

13import Data.Text (Text)

14import Data.Text (Text)

14import Test.QuickCheck

15import Test.QuickCheck

@@ -48,6 +49,10 @@ arbitrary' ByteStringAtomType =

48

49

49arbitrary' BoolAtomType =

50arbitrary' BoolAtomType =

50 Right . BoolAtom <$> lift (arbitrary :: Gen Bool)

51 Right . BoolAtom <$> lift (arbitrary :: Gen Bool)

52+

53+arbitrary' RelationalExprAtomType =

54+ pure (Right (RelationalExprAtom (ExistingRelation relationTrue))) -- don't bother with arbitrary relational expressions

55+

51arbitrary' constructedAtomType@(ConstructedAtomType tcName tvMap)

56arbitrary' constructedAtomType@(ConstructedAtomType tcName tvMap)

52 --special-casing for Interval type

57 --special-casing for Interval type

53 | isIntervalAtomType constructedAtomType = createArbitraryInterval (intervalSubType constructedAtomType)

58 | isIntervalAtomType constructedAtomType = createArbitraryInterval (intervalSubType constructedAtomType)

@@ -79,7 +84,7 @@ maybeToRight y Nothing = Left y

79arbitraryRelationTuple :: Attributes -> WithTCMap Gen (Either RelationalError RelationTuple)

84arbitraryRelationTuple :: Attributes -> WithTCMap Gen (Either RelationalError RelationTuple)

80arbitraryRelationTuple attris = do

85arbitraryRelationTuple attris = do

81 tcMap <- ask

86 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))

83 case sequence listOfMaybeAType of

88 case sequence listOfMaybeAType of

84 Left err -> pure $ Left err

89 Left err -> pure $ Left err

85 Right listOfAttr -> do

90 Right listOfAttr -> do

src/lib/ProjectM36/Atom.hs+1

@@ -20,6 +20,7 @@ atomToText (DayAtom i) = (T.pack . show) i

20atomToText (DateTimeAtom i) = (T.pack . show) i

21atomToText (ByteStringAtom i) = (T.pack . show) i

22atomToText (BoolAtom i) = (T.pack . show) i

23+atomToText (RelationalExprAtom re) = (T.pack . show) re

23

24

24atomToText (RelationAtom i) = (T.pack . show) i

25atomToText (RelationAtom i) = (T.pack . show) i

25atomToText (ConstructedAtom dConsName typ atoms)

26atomToText (ConstructedAtom dConsName typ atoms)

src/lib/ProjectM36/AtomType.hs+8−7

@@ -211,7 +211,7 @@ isValidAtomTypeForTypeConstructor (ConstructedAtomType tConsName _) (ADTypeConst

211

212isValidAtomTypeForTypeConstructor (RelationAtomType attrs) (RelationAtomTypeConstructor attrExprs) tConsMap = do

213 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)

215isValidAtomTypeForTypeConstructor aType tCons _ = Left (AtomTypeTypeConstructorReconciliationError aType (TC.name tCons))

216

217findTypeConstructor :: TypeConstructorName -> TypeConstructorMapping -> Maybe (TypeConstructorDef, [DataConstructorDef])

@@ -295,7 +295,7 @@ resolveTypeInAtom _ atom _ = Right atom

295-- 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.

296resolveTypesInTuple :: Attributes -> TypeConstructorMapping -> RelationTuple -> Either RelationalError RelationTuple

297resolveTypesInTuple 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)

299 Right (RelationTuple resolvedAttrs (V.fromList newAtoms))

300

301-- | Validate that the type is provided with complete type variables for type constructors.

@@ -314,7 +314,7 @@ validateAtomType typ@(ConstructedAtomType tConsName tVarMap) tConss =

314 _ -> Right ()

315validateAtomType (RelationAtomType attrs) tConss =

316 mapM_ (\attr ->

317− validateAtomType (A.atomType attr) tConss) (V.toList attrs)

317+ validateAtomType (A.atomType attr) tConss) (attributesVec attrs)

318validateAtomType (TypeVariableType x) _ = Left (TypeConstructorTypeVarMissing x)

319validateAtomType _ _ = pure ()

320

@@ -325,7 +325,7 @@ validateAttributes tConss attrs =

325 else

326 pure ()

327 where

328− errs = lefts $ map ((`validateAtomType` tConss) . A.atomType) (V.toList attrs)

328+ errs = lefts $ map (`validateAtomType` tConss) (A.atomTypesList attrs)

329

330--ensure that all type vars are fully resolved

331validateTypeVarMap :: TypeVarMap -> TypeConstructorMapping -> Either RelationalError ()

@@ -358,7 +358,7 @@ atomTypeVerify x@(RelationAtomType attrs1) y@(RelationAtomType attrs2) = do

358 if notElem "_" [name1, name2] && name1 /= name2 then

359 Left $ AtomTypeMismatchError x y

360 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))

362 return x

363atomTypeVerify x y = if x == y then

364 Right x

@@ -375,7 +375,7 @@ typeVarMapsVerify a b = M.keysSet a == M.keysSet b && (length . rights) zipped =

375 (M.toAscList b)

376

377prettyAtomType :: 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` "}"

379prettyAtomType (ConstructedAtomType tConsName typeVarMap) = tConsName `T.append` T.concat (map showTypeVars (M.toList typeVarMap))

380 where

381 showTypeVars (_, TypeVariableType x) = " " <> x

@@ -442,12 +442,13 @@ isResolvedType typ =

442 DateTimeAtomType -> True

443 ByteStringAtomType -> True

444 BoolAtomType -> True

445+ RelationalExprAtomType -> True

445 RelationAtomType attrs -> isResolvedAttributes attrs

446 RelationAtomType attrs -> isResolvedAttributes attrs

446 ConstructedAtomType _ tvMap -> all isResolvedType (M.elems tvMap)

447 ConstructedAtomType _ tvMap -> all isResolvedType (M.elems tvMap)

447 TypeVariableType _ -> False

448 TypeVariableType _ -> False

448

449

449isResolvedAttributes :: Attributes -> Bool

450isResolvedAttributes :: Attributes -> Bool

450−isResolvedAttributes attrs = all isResolvedAttribute (V.toList attrs)

451+isResolvedAttributes attrs = all isResolvedAttribute (V.toList (attributesVec attrs))

451

452

452isResolvedAttribute :: Attribute -> Bool

453isResolvedAttribute :: Attribute -> Bool

453isResolvedAttribute = isResolvedType . A.atomType

454isResolvedAttribute = isResolvedType . A.atomType

src/lib/ProjectM36/Atomable.hs+2−1

@@ -235,8 +235,9 @@ typeToTypeConstructor x@DayAtomType = PrimitiveTypeConstructor "Day" x

235typeToTypeConstructor x@DateTimeAtomType = PrimitiveTypeConstructor "DateTime" x

236typeToTypeConstructor x@ByteStringAtomType = PrimitiveTypeConstructor "ByteString" x

237typeToTypeConstructor x@BoolAtomType = PrimitiveTypeConstructor "Bool" x

238+typeToTypeConstructor x@RelationalExprAtomType = PrimitiveTypeConstructor "RelationalExpr" x

238typeToTypeConstructor (RelationAtomType attrs)

239typeToTypeConstructor (RelationAtomType attrs)

239− = RelationAtomTypeConstructor $ map attrToAttrExpr $ V.toList attrs

240+ = RelationAtomTypeConstructor $ map attrToAttrExpr $ V.toList (attributesVec attrs)

240 where

241 where

241 attrToAttrExpr (Attribute n t) = AttributeAndTypeNameExpr n (typeToTypeConstructor t) ()

242 attrToAttrExpr (Attribute n t) = AttributeAndTypeNameExpr n (typeToTypeConstructor t) ()

242typeToTypeConstructor (ConstructedAtomType tcName tvMap)

243typeToTypeConstructor (ConstructedAtomType tcName tvMap)

src/lib/ProjectM36/Attribute.hs+148−29

@@ -1,3 +1,4 @@

1+{-# OPTIONS_GHC -fno-warn-orphans #-}

1module ProjectM36.Attribute where

2module ProjectM36.Attribute where

2import ProjectM36.Base

3import ProjectM36.Base

3import ProjectM36.Error

4import ProjectM36.Error

@@ -10,16 +11,54 @@ import qualified Data.Map as M

10import Data.Either

11import Data.Either

11

12

12arity :: Attributes -> Int

13arity :: 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+ }

14

27

15emptyAttributes :: Attributes

28emptyAttributes :: Attributes

16−emptyAttributes = V.empty

29+emptyAttributes = mempty

17

30

18null :: Attributes -> Bool

31null :: 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)

20

42

21attributesFromList :: [Attribute] -> Attributes

43attributesFromList :: [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

23

62

24attributeName :: Attribute -> AttributeName

63attributeName :: Attribute -> AttributeName

25attributeName (Attribute name _) = name

64attributeName (Attribute name _) = name

@@ -28,17 +67,16 @@ atomType :: Attribute -> AtomType

28atomType (Attribute _ atype) = atype

67atomType (Attribute _ atype) = atype

29

68

30atomTypes :: Attributes -> V.Vector AtomType

69atomTypes :: Attributes -> V.Vector AtomType

31−atomTypes = V.map atomType

70+atomTypes attrs = V.map atomType (attributesVec attrs)

32

71

33atomTypesList :: Attributes -> [AtomType]

72atomTypesList :: Attributes -> [AtomType]

34atomTypesList = V.toList . atomTypes

73atomTypesList = V.toList . atomTypes

35

74

36−--hm- no error-checking here

37addAttribute :: Attribute -> Attributes -> Attributes

75addAttribute :: Attribute -> Attributes -> Attributes

38−addAttribute attr attrs = attrs `V.snoc` attr

76+addAttribute attr attrs = attrs <> singleton attr

39

77

40--if some attribute names overlap but the types do not, then spit back an error

78--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

42joinAttributes attrs1 attrs2 | V.length uniqueOverlappingAttributes /= V.length overlappingAttributes = Left (TupleAttributeTypeMismatchError overlappingAttributes)

80joinAttributes attrs1 attrs2 | V.length uniqueOverlappingAttributes /= V.length overlappingAttributes = Left (TupleAttributeTypeMismatchError overlappingAttributes)

43 | V.length overlappingAttrsDifferentTypes > 0 = Left (TupleAttributeTypeMismatchError overlappingAttrsDifferentTypes)

81 | V.length overlappingAttrsDifferentTypes > 0 = Left (TupleAttributeTypeMismatchError overlappingAttrsDifferentTypes)

44 | otherwise = Right $ vectorUniqueify (attrs1 V.++ attrs2)

82 | otherwise = Right $ vectorUniqueify (attrs1 V.++ attrs2)

@@ -47,20 +85,52 @@ joinAttributes attrs1 attrs2 | V.length uniqueOverlappingAttributes /= V.length

47 attrNames2 = V.map attributeName attrs2

85 attrNames2 = V.map attributeName attrs2

48 uniqueOverlappingAttributes = vectorUniqueify overlappingAttributes

86 uniqueOverlappingAttributes = vectorUniqueify overlappingAttributes

49 overlappingAttributes = V.filter (`V.elem` attrs2) attrs1

87 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+ }

50

106

51addAttributes :: Attributes -> Attributes -> Attributes

107addAttributes :: Attributes -> Attributes -> Attributes

52−addAttributes = (V.++)

108+addAttributes = (<>)

109+

110+member :: Attribute -> Attributes -> Bool

111+member attr attrs = HS.member attr (attributesSet attrs)

53

112

54deleteAttributeName :: AttributeName -> Attributes -> Attributes

113deleteAttributeName :: 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

56

123

57renameAttribute :: AttributeName -> Attribute -> Attribute

124renameAttribute :: AttributeName -> Attribute -> Attribute

58renameAttribute newAttrName (Attribute _ typeo) = Attribute newAttrName typeo

125renameAttribute newAttrName (Attribute _ typeo) = Attribute newAttrName typeo

59

126

60renameAttributes :: AttributeName -> AttributeName -> Attributes -> Attributes

127renameAttributes :: AttributeName -> AttributeName -> Attributes -> Attributes

61−renameAttributes oldAttrName newAttrName = V.map renamer

128+renameAttributes oldAttrName newAttrName attrs = Attributes {

129+ attributesVec = vec

130+ }

62 where

131 where

132+ vec = V.map renamer (attributesVec attrs)

63− renamer attr = if attributeName attr == oldAttrName then

133+ renamer attr = if attributeName attr == oldAttrName then

64 renameAttribute newAttrName attr

134 renameAttribute newAttrName attr

65 else

135 else

66 attr

136 attr

@@ -71,7 +141,7 @@ atomTypeForAttributeName attrName attrs = do

71 return atype

141 return atype

72

142

73attributeForName :: AttributeName -> Attributes -> Either RelationalError Attribute

143attributeForName :: 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

75 Nothing -> Left (NoSuchAttributeNamesError (S.singleton attrName))

145 Nothing -> Left (NoSuchAttributeNamesError (S.singleton attrName))

76 Just attr -> Right attr

146 Just attr -> Right attr

77

147

@@ -89,15 +159,18 @@ projectionAttributesForNames names attrsIn =

89 missingNames = attributeNamesNotContained names (S.fromList (V.toList (attributeNames attrsIn)))

159 missingNames = attributeNamesNotContained names (S.fromList (V.toList (attributeNames attrsIn)))

90

160

91attributesForNames :: S.Set AttributeName -> Attributes -> Attributes

161attributesForNames :: S.Set AttributeName -> Attributes -> Attributes

92−attributesForNames attrNameSet = V.filter filt

162+attributesForNames attrNameSet attrs = Attributes {

163+ attributesVec = vec

164+ }

93 where

165 where

166+ vec = V.filter filt (attributesVec attrs)

94 filt attr = S.member (attributeName attr) attrNameSet

167 filt attr = S.member (attributeName attr) attrNameSet

95

168

96attributeNameSet :: Attributes -> S.Set AttributeName

169attributeNameSet :: 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)

98

171

99attributeNames :: Attributes -> V.Vector AttributeName

172attributeNames :: Attributes -> V.Vector AttributeName

100−attributeNames = V.map attributeName

173+attributeNames attrs = V.map attributeName (attributesVec attrs)

101

174

102--checks if set s1 is wholly contained in the set s2

175--checks if set s1 is wholly contained in the set s2

103attributesContained :: Attributes -> Attributes -> Bool

176attributesContained :: Attributes -> Attributes -> Bool

@@ -118,42 +191,88 @@ attributeNamesNotContained subset superset = S.filter (`S.notMember` superset) s

118

191

119-- useful for display

192-- useful for display

120orderedAttributes :: Attributes -> [Attribute]

193orderedAttributes :: 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))

122

195

123orderedAttributeNames :: Attributes -> [AttributeName]

196orderedAttributeNames :: Attributes -> [AttributeName]

124orderedAttributeNames attrs = map attributeName (orderedAttributes attrs)

197orderedAttributeNames attrs = map attributeName (orderedAttributes attrs)

125

198

126-- take two attribute sets and return an attribute set with the attributes which do not match

199-- 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

127attributesDifference :: Attributes -> Attributes -> Attributes

201attributesDifference :: 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)

129 where

203 where

130 diff a b = (a L.\\ b) ++ (b L.\\ a)

204 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)

131

219

132vectorUniqueify :: (Hash.Hashable a, Eq a) => V.Vector a -> V.Vector a

220vectorUniqueify :: (Hash.Hashable a, Eq a) => V.Vector a -> V.Vector a

133vectorUniqueify vecIn = V.fromList $ HS.toList $ HS.fromList $ V.toList vecIn

221vectorUniqueify vecIn = V.fromList $ HS.toList $ HS.fromList $ V.toList vecIn

134

222

135--check that each attribute only appears once

223--check that each attribute only appears once

136verifyAttributes :: Attributes -> Either RelationalError Attributes

224verifyAttributes :: Attributes -> Either RelationalError Attributes

137−verifyAttributes attrs = if collapsedAttrs /= attrs then

225+verifyAttributes attrs =

226+ if vecSet == attributesSet attrs then

227+ pure attrs

228+ else

138− Left (TupleAttributeTypeMismatchError (attributesDifference collapsedAttrs attrs))

229+ Left (TupleAttributeTypeMismatchError diffAttrs)

139− else

140− Right attrs

141 where

230 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

143

250

251+-- use to determine if the same attributes are contained (but ordering is irrelevant)

144attributesEqual :: Attributes -> Attributes -> Bool

252attributesEqual :: 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

146

256

147attributesAsMap :: Attributes -> M.Map AttributeName Attribute

257attributesAsMap :: 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+

149

260

150-- | Left-biased union of attributes.

261-- | Left-biased union of attributes.

151union :: Attributes -> Attributes -> Attributes

262union :: Attributes -> Attributes -> Attributes

152−union attrsA attrsB = V.fromList (M.elems unioned)

263+union attrsA attrsB = Attributes {

264+ attributesVec = vec

265+ --,attributesSet = hset

266+ }

153 where

267 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

155

270

156intersection :: Attributes -> Attributes -> Attributes

271intersection :: Attributes -> Attributes -> Attributes

157−intersection attrsA attrsB = V.fromList (M.elems intersected)

272+intersection attrsA attrsB = Attributes {

273+ attributesVec = vec

274+ --,attributesSet = hset

275+ }

158 where

276 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+94−47

@@ -1,4 +1,4 @@

1−{-# LANGUAGE ExistentialQuantification,DeriveGeneric,DeriveAnyClass,FlexibleInstances,OverloadedStrings, DeriveTraversable, DerivingVia #-}

1+{-# LANGUAGE ExistentialQuantification,DeriveGeneric,DeriveAnyClass,FlexibleInstances,OverloadedStrings, DeriveTraversable, DerivingVia, TemplateHaskell, TypeFamilies #-}

2{-# OPTIONS_GHC -fno-warn-orphans #-}

3

4module ProjectM36.Base where

@@ -6,6 +6,7 @@ import ProjectM36.DatabaseContextFunctionError

6import ProjectM36.AtomFunctionError

7import ProjectM36.MerkleHash

8

9+import Data.Functor.Foldable.TH

9import qualified Data.Map as M

10import qualified Data.Map as M

10import qualified Data.HashSet as HS

11import qualified Data.HashSet as HS

11import Data.Hashable (Hashable, hashWithSalt)

12import Data.Hashable (Hashable, hashWithSalt)

@@ -24,8 +25,11 @@ import Data.Time.Calendar (Day)

24import Data.Typeable

25import Data.Typeable

25import Data.ByteString (ByteString)

26import Data.ByteString (ByteString)

26import qualified Data.List.NonEmpty as NE

27import qualified Data.List.NonEmpty as NE

28+import Data.Vector.Instances ()

27

29

28type StringType = Text

30type StringType = Text

31+

32+type DatabaseName = String

29

33

30-- | Database atoms are the smallest, undecomposable units of a tuple. Common examples are integers, text, or unique identity keys.

34-- | Database atoms are the smallest, undecomposable units of a tuple. Common examples are integers, text, or unique identity keys.

31data Atom = IntegerAtom Integer |

35data Atom = IntegerAtom Integer |

@@ -37,8 +41,9 @@ data Atom = IntegerAtom Integer |

37 ByteStringAtom ByteString |

41 ByteStringAtom ByteString |

38 BoolAtom Bool |

42 BoolAtom Bool |

39 RelationAtom Relation |

43 RelationAtom Relation |

44+ RelationalExprAtom RelationalExpr | --used for returning inc deps

40 ConstructedAtom DataConstructorName AtomType [Atom]

45 ConstructedAtom DataConstructorName AtomType [Atom]

41− deriving (Eq, Show, Typeable, NFData, Generic)

46+ deriving (Eq, Show, Typeable, NFData, Generic, Read)

42

47

43instance Hashable Atom where

48instance Hashable Atom where

44 hashWithSalt salt (ConstructedAtom dConsName _ atoms) = salt `hashWithSalt` atoms

49 hashWithSalt salt (ConstructedAtom dConsName _ atoms) = salt `hashWithSalt` atoms

@@ -52,6 +57,7 @@ instance Hashable Atom where

52 hashWithSalt salt (ByteStringAtom bs) = salt `hashWithSalt` bs

57 hashWithSalt salt (ByteStringAtom bs) = salt `hashWithSalt` bs

53 hashWithSalt salt (BoolAtom b) = salt `hashWithSalt` b

58 hashWithSalt salt (BoolAtom b) = salt `hashWithSalt` b

54 hashWithSalt salt (RelationAtom r) = salt `hashWithSalt` r

59 hashWithSalt salt (RelationAtom r) = salt `hashWithSalt` r

60+ hashWithSalt salt (RelationalExprAtom re) = salt `hashWithSalt` re

55

61

56-- 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.

62-- 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.

57-- | The AtomType uniquely identifies the type of a atom.

63-- | The AtomType uniquely identifies the type of a atom.

@@ -65,13 +71,15 @@ data AtomType = IntAtomType |

65 BoolAtomType |

71 BoolAtomType |

66 RelationAtomType Attributes |

72 RelationAtomType Attributes |

67 ConstructedAtomType TypeConstructorName TypeVarMap |

73 ConstructedAtomType TypeConstructorName TypeVarMap |

74+ RelationalExprAtomType |

68 TypeVariableType TypeVarName

75 TypeVariableType TypeVarName

69 --wildcard used in Atom Functions and tuples for data constructors which don't provide all arguments to the type constructor

76 --wildcard used in Atom Functions and tuples for data constructors which don't provide all arguments to the type constructor

70− deriving (Eq, NFData, Generic, Show)

77+ deriving (Eq, NFData, Generic, Show, Read, Hashable)

71

78

72instance Ord AtomType where

79instance Ord AtomType where

73 compare = undefined

80 compare = undefined

74−

81+

82+-- this should probably be an ordered dictionary in order to be able to round-trip these arguments

75type TypeVarMap = M.Map TypeVarName AtomType

83type TypeVarMap = M.Map TypeVarName AtomType

76

84

77instance Hashable TypeVarMap where

85instance Hashable TypeVarMap where

@@ -86,25 +94,40 @@ isRelationAtomType _ = False

86type AttributeName = StringType

94type AttributeName = StringType

87

95

88-- | A relation's type is composed of attribute names and types.

96-- | A relation's type is composed of attribute names and types.

89−data Attribute = Attribute AttributeName AtomType deriving (Eq, Show, Generic, NFData)

97+data Attribute = Attribute AttributeName AtomType deriving (Eq, Show, Read, Generic, NFData)

90

98

91instance Hashable Attribute where

99instance Hashable Attribute where

92 hashWithSalt salt (Attribute attrName _) = hashWithSalt salt attrName

100 hashWithSalt salt (Attribute attrName _) = hashWithSalt salt attrName

93

101

102+type AttributesHash = Int

103+

94-- | 'Attributes' represent the head of a relation.

104-- | 'Attributes' represent the head of a relation.

105+newtype Attributes = Attributes {

95−type Attributes = V.Vector Attribute

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

96

122

97−-- | Equality function for a set of attributes.

98−attributesEqual :: Attributes -> Attributes -> Bool

99−attributesEqual attrs1 attrs2 = attrsAsSet attrs1 == attrsAsSet attrs2

100− where

101− attrsAsSet = HS.fromList . V.toList

102−

103sortedAttributesIndices :: Attributes -> [(Int, Attribute)]

123sortedAttributesIndices :: Attributes -> [(Int, Attribute)]

104−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))

105

125

106-- | The relation's tuple set is the body of the relation.

126-- | The relation's tuple set is the body of the relation.

107−newtype RelationTupleSet = RelationTupleSet { asList :: [RelationTuple] } deriving (Hashable, Show, Generic)

127+newtype RelationTupleSet = RelationTupleSet { asList :: [RelationTuple] } deriving (Hashable, Show, Generic, Read)

128+

129+instance Read Relation where

130+ readsPrec = error "relation read not supported"

108

131

109instance Eq RelationTupleSet where

132instance Eq RelationTupleSet where

110 set1 == set2 = hset set1 == hset set2

133 set1 == set2 = hset set1 == hset set2

@@ -117,8 +140,8 @@ instance NFData RelationTupleSet where rnf = genericRnf

117instance Hashable RelationTuple where

140instance Hashable RelationTuple where

118 --sanity check the tuple for attribute and tuple counts

141 --sanity check the tuple for attribute and tuple counts

119 --this bit me when tuples were being hashed before being verified

142 --this bit me when tuples were being hashed before being verified

120− hashWithSalt salt (RelationTuple attrs tupVec) = if V.length attrs /= V.length tupVec then

143+ hashWithSalt salt (RelationTuple attrs tupVec) = if V.length (attributesVec attrs) /= V.length tupVec then

121− error "invalid tuple: attributes and tuple count mismatch"

144+ error ("invalid tuple: attributes and tuple count mismatch " <> show (attributesVec attrs, tupVec))

122 else

145 else

123 salt `hashWithSalt`

146 salt `hashWithSalt`

124 sortedAttrs `hashWithSalt`

147 sortedAttrs `hashWithSalt`

@@ -129,22 +152,23 @@ instance Hashable RelationTuple where

129 sortedTupVec = V.map (\(index, _) -> tupVec V.! index) $ V.fromList sortedAttrsIndices

152 sortedTupVec = V.map (\(index, _) -> tupVec V.! index) $ V.fromList sortedAttrsIndices

130

153

131-- | A tuple is a set of attributes mapped to their 'Atom' values.

154-- | A tuple is a set of attributes mapped to their 'Atom' values.

132−data RelationTuple = RelationTuple Attributes (V.Vector Atom) deriving (Show, Generic)

155+data RelationTuple = RelationTuple Attributes (V.Vector Atom) deriving (Show, Read, Generic)

133

156

134instance Eq RelationTuple where

157instance Eq RelationTuple where

135− (==) tuple1@(RelationTuple attrs1 _) tuple2@(RelationTuple attrs2 _) = attributesEqual attrs1 attrs2 && atomsEqual

158+ tuple1@(RelationTuple attrs1 _) == tuple2@(RelationTuple attrs2 _) =

159+ attrs1 == attrs2 && atomsEqual

136 where

160 where

137− atomForAttribute attr (RelationTuple attrs tupVec) = case V.findIndex (== attr) attrs of

161+ atomForAttribute attr (RelationTuple attrs tupVec) = case V.findIndex (== attr) (attributesVec attrs) of

138 Nothing -> Nothing

162 Nothing -> Nothing

139 Just index -> tupVec V.!? index

163 Just index -> tupVec V.!? index

140− 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)

141

165

142instance NFData RelationTuple where rnf = genericRnf

166instance NFData RelationTuple where rnf = genericRnf

143

167

144data Relation = Relation Attributes RelationTupleSet deriving (Show, Generic,Typeable)

168data Relation = Relation Attributes RelationTupleSet deriving (Show, Generic,Typeable)

145

169

146instance Eq Relation where

170instance Eq Relation where

147− Relation attrs1 tupSet1 == Relation attrs2 tupSet2 = attributesEqual attrs1 attrs2 && tupSet1 == tupSet2

171+ Relation attrs1 tupSet1 == Relation attrs2 tupSet2 = attrs1 == attrs2 && tupSet1 == tupSet2

148

172

149instance NFData Relation where rnf = genericRnf

173instance NFData Relation where rnf = genericRnf

150

174

@@ -199,10 +223,12 @@ data RelationalExprBase a =

199 --Summarize :: AtomExpr -> AttributeName -> RelationalExpr -> RelationalExpr -> RelationalExpr -- a special case of Extend

223 --Summarize :: AtomExpr -> AttributeName -> RelationalExpr -> RelationalExpr -> RelationalExpr -- a special case of Extend

200 --Evaluate relationalExpr with scoped views

224 --Evaluate relationalExpr with scoped views

201 With [(WithNameExprBase a, RelationalExprBase a)] (RelationalExprBase a)

225 With [(WithNameExprBase a, RelationalExprBase a)] (RelationalExprBase a)

202− deriving (Show, Eq, Generic, NFData, Foldable, Functor, Traversable)

226+ deriving (Show, Read, Eq, Generic, NFData, Foldable, Functor, Traversable)

203−

227+

228+instance Hashable RelationalExpr

229+

204data WithNameExprBase a = WithNameExpr RelVarName a

230data WithNameExprBase a = WithNameExpr RelVarName a

205− deriving (Show, Eq, Generic, NFData, Foldable, Functor, Traversable)

231+ deriving (Show, Read, Eq, Generic, NFData, Foldable, Functor, Traversable, Hashable)

206

232

207type WithNameExpr = WithNameExprBase ()

233type WithNameExpr = WithNameExprBase ()

208

234

@@ -224,15 +250,15 @@ type TypeVarName = StringType

224-- | Metadata definition for type constructors such as @data Either a b@.

250-- | Metadata definition for type constructors such as @data Either a b@.

225data TypeConstructorDef = ADTypeConstructorDef TypeConstructorName [TypeVarName] |

251data TypeConstructorDef = ADTypeConstructorDef TypeConstructorName [TypeVarName] |

226 PrimitiveTypeConstructorDef TypeConstructorName AtomType

252 PrimitiveTypeConstructorDef TypeConstructorName AtomType

227− deriving (Show, Generic, Eq, NFData)

253+ deriving (Show, Generic, Eq, NFData, Hashable, Read)

228

254

229-- | Found in data constructors and type declarations: Left (Either Int Text) | Right Int

255-- | Found in data constructors and type declarations: Left (Either Int Text) | Right Int

230type TypeConstructor = TypeConstructorBase ()

256type TypeConstructor = TypeConstructorBase ()

231data TypeConstructorBase a = ADTypeConstructor TypeConstructorName [TypeConstructor] |

257data TypeConstructorBase a = ADTypeConstructor TypeConstructorName [TypeConstructor] |

232− PrimitiveTypeConstructor TypeConstructorName AtomType |

258+ PrimitiveTypeConstructor TypeConstructorName AtomType |

233− RelationAtomTypeConstructor [AttributeExprBase a] |

259+ RelationAtomTypeConstructor [AttributeExprBase a] |

234− TypeVariable TypeVarName

260+ TypeVariable TypeVarName

235− deriving (Show, Generic, Eq, NFData)

261+ deriving (Show, Generic, Eq, NFData, Hashable, Read)

236

262

237type TypeConstructorMapping = [(TypeConstructorDef, DataConstructorDefs)]

263type TypeConstructorMapping = [(TypeConstructorDef, DataConstructorDefs)]

238

264

@@ -242,13 +268,13 @@ type DataConstructorName = StringType

242type AtomTypeName = StringType

268type AtomTypeName = StringType

243

269

244-- | Used to define a data constructor in a type constructor context such as @Left a | Right b@

270-- | Used to define a data constructor in a type constructor context such as @Left a | Right b@

245−data DataConstructorDef = DataConstructorDef DataConstructorName [DataConstructorDefArg] deriving (Eq, Show, Generic, NFData)

271+data DataConstructorDef = DataConstructorDef DataConstructorName [DataConstructorDefArg] deriving (Eq, Show, Generic, NFData, Hashable, Read)

246

272

247type DataConstructorDefs = [DataConstructorDef]

273type DataConstructorDefs = [DataConstructorDef]

248

274

249data DataConstructorDefArg = DataConstructorDefTypeConstructorArg TypeConstructor |

275data DataConstructorDefArg = DataConstructorDefTypeConstructorArg TypeConstructor |

250 DataConstructorDefTypeVarNameArg TypeVarName

276 DataConstructorDefTypeVarNameArg TypeVarName

251− deriving (Show, Generic, Eq, NFData)

277+ deriving (Show, Generic, Eq, NFData, Hashable, Read)

252

278

253type InclusionDependencies = M.Map IncDepName InclusionDependency

279type InclusionDependencies = M.Map IncDepName InclusionDependency

254type RelationVariables = M.Map RelVarName GraphRefRelationalExpr

280type RelationVariables = M.Map RelVarName GraphRefRelationalExpr

@@ -293,7 +319,7 @@ data DatabaseContext = DatabaseContext {

293type IncDepName = StringType

319type IncDepName = StringType

294

320

295-- | Inclusion dependencies represent every possible database constraint. Constraints enforce specific, arbitrarily-complex rules to which the database context's relation variables must adhere unconditionally.

321-- | Inclusion dependencies represent every possible database constraint. Constraints enforce specific, arbitrarily-complex rules to which the database context's relation variables must adhere unconditionally.

296−data InclusionDependency = InclusionDependency RelationalExpr RelationalExpr deriving (Show, Eq, Generic, NFData)

322+data InclusionDependency = InclusionDependency RelationalExpr RelationalExpr deriving (Show, Eq, Generic, NFData, Hashable, Read)

297

323

298type AttributeNameAtomExprMap = M.Map AttributeName AtomExpr

324type AttributeNameAtomExprMap = M.Map AttributeName AtomExpr

299

325

@@ -302,6 +328,8 @@ type DatabaseContextExprName = StringType

302

328

303type DatabaseContextExpr = DatabaseContextExprBase ()

329type DatabaseContextExpr = DatabaseContextExprBase ()

304

330

331+instance Hashable DatabaseContextExpr

332+

305type GraphRefDatabaseContextExpr = DatabaseContextExprBase GraphRefTransactionMarker

333type GraphRefDatabaseContextExpr = DatabaseContextExprBase GraphRefTransactionMarker

306

334

307-- | Database context expressions modify the database context.

335-- | Database context expressions modify the database context.

@@ -331,7 +359,10 @@ data DatabaseContextExprBase a =

331 ExecuteDatabaseContextFunction DatabaseContextFunctionName [AtomExprBase a] |

359 ExecuteDatabaseContextFunction DatabaseContextFunctionName [AtomExprBase a] |

332

360

333 MultipleExpr [DatabaseContextExprBase a]

361 MultipleExpr [DatabaseContextExprBase a]

334− deriving (Show, Eq, Generic)

362+ deriving (Show, Read, Eq, Generic, NFData)

363+

364+instance Hashable (M.Map AttributeName AtomExpr) where

365+ hashWithSalt salt m = salt `hashWithSalt` M.toList m

335

366

336type ObjModuleName = StringType

367type ObjModuleName = StringType

337type ObjFunctionName = StringType

368type ObjFunctionName = StringType

@@ -351,6 +382,8 @@ type DatabaseContextIOExpr = DatabaseContextIOExprBase ()

351

382

352type RestrictionPredicateExpr = RestrictionPredicateExprBase ()

383type RestrictionPredicateExpr = RestrictionPredicateExprBase ()

353

384

385+instance Hashable RestrictionPredicateExpr

386+

354type GraphRefRestrictionPredicateExpr = RestrictionPredicateExprBase GraphRefTransactionMarker

387type GraphRefRestrictionPredicateExpr = RestrictionPredicateExprBase GraphRefTransactionMarker

355

388

356-- | Restriction predicates are boolean algebra components which, when composed, indicate whether or not a tuple should be retained during a restriction (filtering) operation.

389-- | Restriction predicates are boolean algebra components which, when composed, indicate whether or not a tuple should be retained during a restriction (filtering) operation.

@@ -362,7 +395,7 @@ data RestrictionPredicateExprBase a =

362 RelationalExprPredicate (RelationalExprBase a) | --type must be same as true and false relations (no attributes)

395 RelationalExprPredicate (RelationalExprBase a) | --type must be same as true and false relations (no attributes)

363 AtomExprPredicate (AtomExprBase a) | --atom must evaluate to boolean

396 AtomExprPredicate (AtomExprBase a) | --atom must evaluate to boolean

364 AttributeEqualityPredicate AttributeName (AtomExprBase a) -- relationalexpr must result in relation with single tuple

397 AttributeEqualityPredicate AttributeName (AtomExprBase a) -- relationalexpr must result in relation with single tuple

365− deriving (Show, Eq, Generic, NFData, Foldable, Functor, Traversable)

398+ deriving (Show, Read, Eq, Generic, NFData, Foldable, Functor, Traversable)

366

399

367-- child + parent links

400-- child + parent links

368-- | 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.

401-- | 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.

@@ -423,6 +456,8 @@ instance Ord Transaction where

423

456

424type AtomExpr = AtomExprBase ()

457type AtomExpr = AtomExprBase ()

425

458

459+instance Hashable AtomExpr

460+

426type GraphRefAtomExpr = AtomExprBase GraphRefTransactionMarker

461type GraphRefAtomExpr = AtomExprBase GraphRefTransactionMarker

427

462

428-- | An atom expression represents an action to take when extending a relation or when statically defining a relation or a new tuple.

463-- | An atom expression represents an action to take when extending a relation or when statically defining a relation or a new tuple.

@@ -431,13 +466,16 @@ data AtomExprBase a = AttributeAtomExpr AttributeName |

431 FunctionAtomExpr AtomFunctionName [AtomExprBase a] a |

466 FunctionAtomExpr AtomFunctionName [AtomExprBase a] a |

432 RelationAtomExpr (RelationalExprBase a) |

467 RelationAtomExpr (RelationalExprBase a) |

433 ConstructedAtomExpr DataConstructorName [AtomExprBase a] a

468 ConstructedAtomExpr DataConstructorName [AtomExprBase a] a

434− deriving (Eq,Show,Generic, NFData, Foldable, Functor, Traversable)

469+ deriving (Eq, Show, Read, Generic, NFData, Foldable, Functor, Traversable)

435

470

436-- | Used in tuple creation when creating a relation.

471-- | Used in tuple creation when creating a relation.

437data ExtendTupleExprBase a = AttributeExtendTupleExpr AttributeName (AtomExprBase a)

472data ExtendTupleExprBase a = AttributeExtendTupleExpr AttributeName (AtomExprBase a)

438− deriving (Show, Eq, Generic, NFData, Foldable, Functor, Traversable)

473+ deriving (Show, Read, Eq, Generic, NFData, Foldable, Functor, Traversable)

439

474

440type ExtendTupleExpr = ExtendTupleExprBase ()

475type ExtendTupleExpr = ExtendTupleExprBase ()

476+

477+instance Hashable ExtendTupleExpr

478+

441type GraphRefExtendTupleExpr = ExtendTupleExprBase GraphRefTransactionMarker

479type GraphRefExtendTupleExpr = ExtendTupleExprBase GraphRefTransactionMarker

442

480

443--enumerates the list of functions available to be run as part of tuple expressions

481--enumerates the list of functions available to be run as part of tuple expressions

@@ -485,7 +523,12 @@ data AttributeNamesBase a = AttributeNames (S.Set AttributeName) |

485 UnionAttributeNames (AttributeNamesBase a) (AttributeNamesBase a) |

523 UnionAttributeNames (AttributeNamesBase a) (AttributeNamesBase a) |

486 IntersectAttributeNames (AttributeNamesBase a) (AttributeNamesBase a) |

524 IntersectAttributeNames (AttributeNamesBase a) (AttributeNamesBase a) |

487 RelationalExprAttributeNames (RelationalExprBase a) -- use attribute names from the relational expression's type

525 RelationalExprAttributeNames (RelationalExprBase a) -- use attribute names from the relational expression's type

488− 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

489

532

490type AttributeNames = AttributeNamesBase ()

533type AttributeNames = AttributeNamesBase ()

491

534

@@ -503,18 +546,22 @@ type GraphRefAttributeExpr = AttributeExprBase GraphRefTransactionMarker

503-- | Create attributes dynamically.

546-- | Create attributes dynamically.

504data AttributeExprBase a = AttributeAndTypeNameExpr AttributeName TypeConstructor a |

547data AttributeExprBase a = AttributeAndTypeNameExpr AttributeName TypeConstructor a |

505 NakedAttributeExpr Attribute

548 NakedAttributeExpr Attribute

506− deriving (Eq, Show, Generic, NFData, Foldable, Functor, Traversable)

549+ deriving (Eq, Show, Read, Generic, NFData, Foldable, Functor, Traversable, Hashable)

507

550

508-- | Dynamically create a tuple from attribute names and 'AtomExpr's.

551-- | Dynamically create a tuple from attribute names and 'AtomExpr's.

509newtype TupleExprBase a = TupleExpr (M.Map AttributeName (AtomExprBase a))

552newtype TupleExprBase a = TupleExpr (M.Map AttributeName (AtomExprBase a))

510− deriving (Eq, Show, Generic, NFData, Foldable, Functor, Traversable)

553+ deriving (Eq, Show, Read, Generic, NFData, Foldable, Functor, Traversable)

511−

554+

555+instance Hashable TupleExpr

556+

512type TupleExpr = TupleExprBase ()

557type TupleExpr = TupleExprBase ()

513

558

514type GraphRefTupleExpr = TupleExprBase GraphRefTransactionMarker

559type GraphRefTupleExpr = TupleExprBase GraphRefTransactionMarker

515

560

516data TupleExprsBase a = TupleExprs a [TupleExprBase a]

561data TupleExprsBase a = TupleExprs a [TupleExprBase a]

517− deriving (Eq, Show, Generic, NFData, Foldable, Functor, Traversable)

562+ deriving (Eq, Show, Read, Generic, NFData, Foldable, Functor, Traversable)

563+

564+instance Hashable TupleExprs

518

565

519type GraphRefTupleExprs = TupleExprsBase GraphRefTransactionMarker

566type GraphRefTupleExprs = TupleExprsBase GraphRefTransactionMarker

520

567

@@ -564,7 +611,8 @@ attrTypeVars (Attribute _ aType) = case aType of

564 DateTimeAtomType -> S.empty

611 DateTimeAtomType -> S.empty

565 ByteStringAtomType -> S.empty

612 ByteStringAtomType -> S.empty

566 BoolAtomType -> S.empty

613 BoolAtomType -> S.empty

614+ RelationalExprAtomType -> S.empty

567− (RelationAtomType attrs) -> S.unions (map attrTypeVars (V.toList attrs))

615+ (RelationAtomType attrs) -> S.unions (map attrTypeVars (V.toList (attributesVec attrs)))

568 (ConstructedAtomType _ tvMap) -> M.keysSet tvMap

616 (ConstructedAtomType _ tvMap) -> M.keysSet tvMap

569 (TypeVariableType nam) -> S.singleton nam

617 (TypeVariableType nam) -> S.singleton nam

570

618

@@ -587,13 +635,12 @@ atomTypeVars DayAtomType = S.empty

587atomTypeVars DateTimeAtomType = S.empty

635atomTypeVars DateTimeAtomType = S.empty

588atomTypeVars ByteStringAtomType = S.empty

636atomTypeVars ByteStringAtomType = S.empty

589atomTypeVars BoolAtomType = S.empty

637atomTypeVars BoolAtomType = S.empty

638+atomTypeVars RelationalExprAtomType = S.empty

590−atomTypeVars (RelationAtomType attrs) = S.unions (map attrTypeVars (V.toList attrs))

639+atomTypeVars (RelationAtomType attrs) = S.unions (map attrTypeVars (V.toList (attributesVec attrs)))

591atomTypeVars (ConstructedAtomType _ tvMap) = M.keysSet tvMap

640atomTypeVars (ConstructedAtomType _ tvMap) = M.keysSet tvMap

592atomTypeVars (TypeVariableType nam) = S.singleton nam

641atomTypeVars (TypeVariableType nam) = S.singleton nam

593

642

594unimplemented :: HasCallStack => a

643unimplemented :: HasCallStack => a

595−unimplemented = undefined

644+unimplemented = error "unimplemented"

596−

597−--for serializing GraphRefRelationalExpr as part of transaction serialization

598

645

599−

646+makeBaseFunctor ''RelationalExprBase

src/lib/ProjectM36/Client.hs+79−129

@@ -127,7 +127,6 @@ import ProjectM36.TransGraphRelationalExpression as TGRE (TransGraphRelationalEx

127import ProjectM36.Persist (DiskSync(..))

128import ProjectM36.FileLock

129import ProjectM36.NormalizeExpr

130−import ProjectM36.Server.Types

131import ProjectM36.Notifications

130import ProjectM36.Notifications

132import ProjectM36.Server.RemoteCallTypes

131import ProjectM36.Server.RemoteCallTypes

133import qualified ProjectM36.DisconnectedTransaction as Discon

132import qualified ProjectM36.DisconnectedTransaction as Discon

@@ -135,11 +134,13 @@ import ProjectM36.Relation (typesAsRelation)

135import ProjectM36.ScriptSession (initScriptSession, ScriptSession)

134import ProjectM36.ScriptSession (initScriptSession, ScriptSession)

136import qualified ProjectM36.Relation as R

135import qualified ProjectM36.Relation as R

137import Control.Exception.Base

136import Control.Exception.Base

138−import GHC.Conc.Sync

137+import Control.Concurrent.STM

138+import Control.Concurrent.Async

139

140import Data.Either (isRight)

141import Data.UUID.V4 (nextRandom)

142import Data.Word

143+import Data.Hashable

143import Control.Exception (IOException, handle, AsyncException, throwIO, fromException, Exception)

144import Control.Exception (IOException, handle, AsyncException, throwIO, fromException, Exception)

144import Control.Concurrent.MVar

145import Control.Concurrent.MVar

145import Codec.Winery hiding (Schema, schema)

146import Codec.Winery hiding (Schema, schema)

@@ -161,6 +162,7 @@ import Data.Time.Clock

161import qualified Network.RPC.Curryer.Client as RPC

162import qualified Network.RPC.Curryer.Client as RPC

162import qualified Network.RPC.Curryer.Server as RPC

163import qualified Network.RPC.Curryer.Server as RPC

163import Network.Socket (Socket, AddrInfo(..), getAddrInfo, defaultHints, AddrInfoFlag(..), SocketType(..), ServiceName, hostAddressToTuple, SockAddr(..))

164import Network.Socket (Socket, AddrInfo(..), getAddrInfo, defaultHints, AddrInfoFlag(..), SocketType(..), ServiceName, hostAddressToTuple, SockAddr(..))

165+import GHC.Conc (unsafeIOToSTM)

164

166

165type Hostname = String

167type Hostname = String

166

168

@@ -246,9 +248,10 @@ createScriptSession :: [String] -> IO (Maybe ScriptSession)

246createScriptSession ghcPkgPaths = do

248createScriptSession ghcPkgPaths = do

247 eScriptSession <- initScriptSession ghcPkgPaths

249 eScriptSession <- initScriptSession ghcPkgPaths

248 case eScriptSession of

250 case eScriptSession of

249− 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

250 Right s -> pure (Just s)

252 Right s -> pure (Just s)

251

253

254+

252-- | To create a 'Connection' to a remote or local database, create a 'ConnectionInfo' and call 'connectProjectM36'.

255-- | To create a 'Connection' to a remote or local database, create a 'ConnectionInfo' and call 'connectProjectM36'.

253connectProjectM36 :: ConnectionInfo -> IO (Either ConnectionError Connection)

256connectProjectM36 :: ConnectionInfo -> IO (Either ConnectionError Connection)

254--create a new in-memory database/transaction graph

257--create a new in-memory database/transaction graph

@@ -264,14 +267,16 @@ connectProjectM36 (InProcessConnectionInfo strat notificationCallback ghcPkgPath

264 clientNodes <- StmSet.newIO

267 clientNodes <- StmSet.newIO

265 sessions <- StmMap.newIO

268 sessions <- StmMap.newIO

266 mScriptSession <- createScriptSession ghcPkgPaths

269 mScriptSession <- createScriptSession ghcPkgPaths

267−

270+ notifAsync <- startNotificationListener clientNodes notificationCallback

268 let conn = InProcessConnection InProcessConnectionConf {

271 let conn = InProcessConnection InProcessConnectionConf {

269 ipPersistenceStrategy = strat,

272 ipPersistenceStrategy = strat,

270 ipClientNodes = clientNodes,

273 ipClientNodes = clientNodes,

271 ipSessions = sessions,

274 ipSessions = sessions,

272 ipTransactionGraph = graphTvar,

275 ipTransactionGraph = graphTvar,

273 ipScriptSession = mScriptSession,

276 ipScriptSession = mScriptSession,

274− ipLocks = Nothing}

277+ ipLocks = Nothing,

278+ ipCallbackAsync = notifAsync

279+ }

275 pure (Right conn)

280 pure (Right conn)

276 MinimalPersistence dbdir -> connectPersistentProjectM36 strat NoDiskSync dbdir freshGraph notificationCallback ghcPkgPaths

281 MinimalPersistence dbdir -> connectPersistentProjectM36 strat NoDiskSync dbdir freshGraph notificationCallback ghcPkgPaths

277 CrashSafePersistence dbdir -> connectPersistentProjectM36 strat FsyncDiskSync dbdir freshGraph notificationCallback ghcPkgPaths

282 CrashSafePersistence dbdir -> connectPersistentProjectM36 strat FsyncDiskSync dbdir freshGraph notificationCallback ghcPkgPaths

@@ -292,22 +297,32 @@ connectProjectM36 (RemoteConnectionInfo dbName hostName servicePort notification

292 \(NotificationMessage notifications') ->

297 \(NotificationMessage notifications') ->

293 forM_ (M.toList notifications') (uncurry notificationCallback)

298 forM_ (M.toList notifications') (uncurry notificationCallback)

294 ]

299 ]

295−-- TODO missing async callback

300+ let connectExcHandler (e :: IOException) = pure $ Left (IOExceptionError e)

296− conn <- RPC.connect notificationHandlers (hostAddressToTuple addr) port

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

297− eRet <- RPC.call conn (Login dbName)

305+ eRet <- RPC.call conn (Login dbName)

298−-- TODO handle connection errors

299− case eRet of

306+ case eRet of

300− Left err -> error (show err)

307+ Left err -> error (show err)

301− Right False -> error "wtf"

308+ Right False -> error "wtf"

302− Right True ->

309+ Right True ->

303 --TODO handle connection errors!

310 --TODO handle connection errors!

304− pure (Right (RemoteConnection (RemoteConnectionConf conn)))

311+ pure (Right (RemoteConnection (RemoteConnectionConf conn)))

305

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+

306−addClientNode :: DatabaseName ->Connection -> RPC.Locking Socket -> IO ()

321+addClientNode :: Connection -> RPC.Locking Socket -> IO ()

307−addClientNode _ (RemoteConnection _) _ = error "addClientNode called on remote connection"

322+addClientNode (RemoteConnection _) _ = error "addClientNode called on remote connection"

308−addClientNode dbName (InProcessConnection conf) lockSock = atomically (StmSet.insert clientInfo (ipClientNodes conf))

323+addClientNode (InProcessConnection conf) lockSock = atomically (StmSet.insert clientInfo (ipClientNodes conf))

309 where

324 where

310− clientInfo = ClientInfo dbName lockSock

325+ clientInfo = RemoteClientInfo lockSock

311

326

312connectPersistentProjectM36 :: PersistenceStrategy ->

327connectPersistentProjectM36 :: PersistenceStrategy ->

313 DiskSync ->

328 DiskSync ->

@@ -333,17 +348,27 @@ connectPersistentProjectM36 strat sync dbdir freshGraph notificationCallback ghc

333 sessions <- StmMap.newIO

348 sessions <- StmMap.newIO

334 clientNodes <- StmSet.newIO

349 clientNodes <- StmSet.newIO

335 lockMVar <- newMVar digest

350 lockMVar <- newMVar digest

351+ notifAsync <- startNotificationListener clientNodes notificationCallback

336 let conn = InProcessConnection InProcessConnectionConf {

352 let conn = InProcessConnection InProcessConnectionConf {

337 ipPersistenceStrategy = strat,

353 ipPersistenceStrategy = strat,

338 ipClientNodes = clientNodes,

354 ipClientNodes = clientNodes,

339 ipSessions = sessions,

355 ipSessions = sessions,

340 ipTransactionGraph = tvarGraph,

356 ipTransactionGraph = tvarGraph,

341 ipScriptSession = mScriptSession,

357 ipScriptSession = mScriptSession,

342− ipLocks = Just (lockFileH, lockMVar)

358+ ipLocks = Just (lockFileH, lockMVar),

359+ ipCallbackAsync = notifAsync

343 }

360 }

344−

345 pure (Right conn)

361 pure (Right conn)

346−

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+

347-- | Create a new session at the transaction id and return the session's Id.

372-- | Create a new session at the transaction id and return the session's Id.

348createSessionAtCommit :: Connection -> TransactionId -> IO (Either RelationalError SessionId)

373createSessionAtCommit :: Connection -> TransactionId -> IO (Either RelationalError SessionId)

349createSessionAtCommit conn@(InProcessConnection _) commitId = do

374createSessionAtCommit conn@(InProcessConnection _) commitId = do

@@ -389,6 +414,7 @@ closeSession sessionId conn@(RemoteConnection _) = remoteCall conn (CloseSession

389-- | 'close' cleans up the database access connection and closes any relevant sockets.

414-- | 'close' cleans up the database access connection and closes any relevant sockets.

390close :: Connection -> IO ()

415close :: Connection -> IO ()

391close (InProcessConnection conf) = do

416close (InProcessConnection conf) = do

417+ cancel (ipCallbackAsync conf)

392 atomically $ do

418 atomically $ do

393 let sessions = ipSessions conf

419 let sessions = ipSessions conf

394#if MIN_VERSION_stm_containers(1,0,0)

420#if MIN_VERSION_stm_containers(1,0,0)

@@ -420,24 +446,14 @@ excEither = handle handler

420 handler exc | Just (_ :: AsyncException) <- fromException exc = throwIO exc

446 handler exc | Just (_ :: AsyncException) <- fromException exc = throwIO exc

421 | otherwise = pure (Left (UnhandledExceptionError (show exc)))

447 | otherwise = pure (Left (UnhandledExceptionError (show exc)))

422

448

423−{-

424−safeLogin :: Login -> ProcessId -> Process Bool

425−safeLogin login procId = do

426− ret <- call procId login

427− case ret of

428− Left (_ :: ServerError) -> pure False

429− Right val -> pure val

430−-}

431

449

432remoteCall :: (Serialise a, Serialise b) => Connection -> a -> IO b

450remoteCall :: (Serialise a, Serialise b) => Connection -> a -> IO b

433remoteCall (InProcessConnection _ ) _ = error "remoteCall called on local connection"

451remoteCall (InProcessConnection _ ) _ = error "remoteCall called on local connection"

434remoteCall (RemoteConnection (RemoteConnectionConf rpcConn)) arg = do

452remoteCall (RemoteConnection (RemoteConnectionConf rpcConn)) arg = do

435 eRet <- RPC.call rpcConn arg

453 eRet <- RPC.call rpcConn arg

436 case eRet of

454 case eRet of

437− Left err -> error ("connection died " <> show err) --TODO: throw some more specific exceptions

455+ Left err -> convertRPCErrors err

438 Right val -> pure val

456 Right val -> pure val

439−

440−

441

457

442sessionForSessionId :: SessionId -> Sessions -> STM (Either RelationalError Session)

458sessionForSessionId :: SessionId -> Sessions -> STM (Either RelationalError Session)

443sessionForSessionId sessionId sessions =

459sessionForSessionId sessionId sessions =

@@ -599,20 +615,6 @@ executeDatabaseContextIOExpr sessionId (InProcessConnection conf) expr = excEith

599 pure (Right ())

615 pure (Right ())

600executeDatabaseContextIOExpr sessionId conn@(RemoteConnection _) dbExpr = remoteCall conn (ExecuteDatabaseContextIOExpr sessionId dbExpr)

616executeDatabaseContextIOExpr sessionId conn@(RemoteConnection _) dbExpr = remoteCall conn (ExecuteDatabaseContextIOExpr sessionId dbExpr)

601

617

602−{-

603−executeGraphExprSTM_ :: TransactionId -> SessionId -> Session -> Sessions -> TransactionGraphOperator -> TransactionGraph -> TVar TransactionGraph -> STM (Either RelationalError (TransactionGraph, DisconnectedTransaction)

604−executeGraphExprSTM_ freshId sessionId session sessions graphExpr graph graphTVar= do

605− case evalGraphOp freshId (Sess.disconnectedTransaction session) graph graphExpr of

606− Left err -> do

607− when updateGraphOnError (writeTVar graphTVar graph)

608− pure $ Left err

609− Right (discon', graph') -> do

610− writeTVar graphTVar graph'

611− let newSession = Session discon' (Sess.schemaName session)

612− STMMap.insert newSession sessionId sessions

613− pure $ Right graph'

614−-}

615−

616-- process notifications for commits

618-- process notifications for commits

617executeCommitExprSTM_

619executeCommitExprSTM_

618 :: TransactionGraph

620 :: TransactionGraph

@@ -653,77 +655,7 @@ executeGraphExpr sessionId (InProcessConnection conf) graphExpr = excEither $ do

653 --if freshId appears in the graph, then we need to pass it on

655 --if freshId appears in the graph, then we need to pass it on

654 let transIds = [freshId | isRight (RE.transactionForId freshId graph')]

656 let transIds = [freshId | isRight (RE.transactionForId freshId graph')]

655 pure (Right (discon', graph', transIds))

657 pure (Right (discon', graph', transIds))

656−{-

658+

657−executeGraphExpr sessionId (InProcessConnection conf) graphExpr = excEither $ do

658− let strat = ipPersistenceStrategy conf

659− clientNodes = ipClientNodes conf

660− sessions = ipSessions conf

661− graphTvar = ipTransactionGraph conf

662− mLockFileH = ipLocks conf

663− lockHandler body = case graphExpr of

664− Commit -> case mLockFileH of

665− Nothing -> body False

666− Just (lockFileH, lockMVar) -> let acquireLocks = do

667− lastWrittenDigest <- takeMVar lockMVar

668− lockFile lockFileH WriteLock

669− latestDigest <- readGraphTransactionIdDigest strat

670− pure (latestDigest /= lastWrittenDigest)

671−

672− releaseLocks _ = do

673− --still holding the lock- get the latest digest

674− gDigest <- readGraphTransactionIdDigest strat

675− unlockFile lockFileH

676− putMVar lockMVar gDigest

677− in bracket acquireLocks releaseLocks body

678− _ -> body False

679− freshId <- nextRandom

680− lockHandler $ \dbWrittenByOtherProcess -> do

681− --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

682− --read transaction data and compare to existing graph

683− --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)

684− manip <- atomically $ do

685− eSession <- sessionForSessionId sessionId sessions

686− --handle graph update by other process

687− oldGraph <- readTVar graphTvar

688− case eSession of

689− Left err -> pure (Left err)

690− Right session -> do

691− let mScriptSession = ipScriptSession conf

692− dbdir = case strat of

693− MinimalPersistence x -> x

694− CrashSafePersistence x -> x

695− _ -> error "accessing dbdir on non-persisted connection"

696− eRefreshedGraph <- if dbWrittenByOtherProcess then

697− unsafeIOToSTM (transactionGraphLoad dbdir oldGraph mScriptSession)

698− else

699− pure (Right oldGraph)

700− case eRefreshedGraph of

701− Left err -> pure (Left (DatabaseLoadError err))

702− Right refreshedGraph -> do

703− --snip it

704− eGraph <- executeGraphExprSTM_ dbWrittenByOtherProcess freshId sessionId session sessions graphExpr refreshedGraph graphTvar

705− --snip it

706− case eGraph of

707− Left err -> pure (Left err)

708− Right newGraph -> do

709− --handle commit

710− if isCommit graphExpr then do

711− case transactionForId (Sess.parentId session) oldGraph of

712− Left err -> pure $ Left err

713− Right previousTrans -> do

714− (evaldNots, nodes) <- executeCommitExprSTM_ (Trans.concreteDatabaseContext previousTrans) (Sess.concreteDatabaseContext session) clientNodes

715− nodesToNotify <- toList (StmSet.stream nodes)

716− pure $ Right (evaldNots, nodesToNotify, newGraph)

717− else

718− pure $ Right (M.empty, [], newGraph)

719− case manip of

720− Left err -> return $ Just err

721− Right (notsToFire, nodesToNotify, newGraph) -> do

722− --update filesystem database, if necessary

723− processTransactionGraphPersistence strat newGraph

724− sendNotifications nodesToNotify (ipLocalNode conf) notsToFire

725− pure Nothing

726−-}

727executeGraphExpr sessionId conn@(RemoteConnection _) graphExpr = remoteCall conn (ExecuteGraphExpr sessionId graphExpr)

659executeGraphExpr sessionId conn@(RemoteConnection _) graphExpr = remoteCall conn (ExecuteGraphExpr sessionId graphExpr)

728

660

729-- | A trans-graph expression is a relational query executed against the entirety of a transaction graph.

661-- | A trans-graph expression is a relational query executed against the entirety of a transaction graph.

@@ -732,9 +664,6 @@ executeTransGraphRelationalExpr _ (InProcessConnection conf) tgraphExpr = excEit

732 let graphTvar = ipTransactionGraph conf

664 let graphTvar = ipTransactionGraph conf

733 graph <- readTVar graphTvar

665 graph <- readTVar graphTvar

734 pure $ force $ optimizeAndEvalTransGraphRelationalExpr graph tgraphExpr

666 pure $ force $ optimizeAndEvalTransGraphRelationalExpr graph tgraphExpr

735−{- case runReader (RE.evalRelationalExpr relExpr) (RE.mkRelationalExprState DBC.empty) of

736− Left err -> pure (Left err)

737− Right rel -> pure (force (Right rel))-}

738executeTransGraphRelationalExpr sessionId conn@(RemoteConnection _) tgraphExpr = remoteCall conn (ExecuteTransGraphRelationalExpr sessionId tgraphExpr)

667executeTransGraphRelationalExpr sessionId conn@(RemoteConnection _) tgraphExpr = remoteCall conn (ExecuteTransGraphRelationalExpr sessionId tgraphExpr)

739

668

740-- | Schema expressions manipulate the isomorphic schemas for the current 'DatabaseContext'.

669-- | Schema expressions manipulate the isomorphic schemas for the current 'DatabaseContext'.

@@ -767,8 +696,10 @@ commit sessionId conn@(RemoteConnection _) = remoteCall conn (ExecuteGraphExpr s

767

696

768sendNotifications :: [ClientInfo] -> EvaluatedNotifications -> IO ()

697sendNotifications :: [ClientInfo] -> EvaluatedNotifications -> IO ()

769sendNotifications clients notifs =

698sendNotifications clients notifs =

770− unless (M.null notifs) $

699+ unless (M.null notifs) $ forM_ clients sender

700+ where

771− forM_ (map clientSocket clients) $ \sock -> RPC.sendMessage sock (NotificationMessage notifs)

701+ sender (RemoteClientInfo sock) = RPC.sendMessage sock (NotificationMessage notifs)

702+ sender (InProcessClientInfo tvar) = putMVar tvar notifs

772

703

773-- | 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.

704-- | 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.

774rollback :: SessionId -> Connection -> IO (Either RelationalError ())

705rollback :: SessionId -> Connection -> IO (Either RelationalError ())

@@ -1070,13 +1001,6 @@ commitLock_ sessionId conf stmBlock = do

1070 processTransactionGraphPersistence strat transactionIdsToPersist newGraph

1001 processTransactionGraphPersistence strat transactionIdsToPersist newGraph

1071 sendNotifications nodesToNotify notsToFire

1002 sendNotifications nodesToNotify notsToFire

1072 pure (Right ())

1003 pure (Right ())

1073−{-

1074−writeDisconAndGraph_ :: TVar TransactionGraph -> SessionId -> Session -> Sessions -> DisconnectedTransaction -> TransactionGraph -> STM ()

1075−writeDisconAndGraph_ graphTvar sessionId session sessions discon graph = do

1076− writeTVar graphTvar graph

1077− let newSession = Session discon (Sess.schemaName session)

1078− StmMap.insert newSession sessionId sessions

1079−-}

1080

1004

1081-- | Runs an IO monad, commits the result when the monad returns no errors, otherwise, rolls back the changes and the error.

1005-- | Runs an IO monad, commits the result when the monad returns no errors, otherwise, rolls back the changes and the error.

1082withTransaction :: SessionId -> Connection -> IO (Either RelationalError a) -> IO (Either RelationalError ()) -> IO (Either RelationalError a)

1006withTransaction :: SessionId -> Connection -> IO (Either RelationalError a) -> IO (Either RelationalError ()) -> IO (Either RelationalError a)

@@ -1143,3 +1067,29 @@ validateMerkleHashes sessionId (InProcessConnection conf) = do

1143 Left merkleErrs -> pure $ Left $ someErrors (map (\(MerkleValidationError tid expected actual) -> MerkleHashValidationError tid expected actual) merkleErrs)

1067 Left merkleErrs -> pure $ Left $ someErrors (map (\(MerkleValidationError tid expected actual) -> MerkleHashValidationError tid expected actual) merkleErrs)

1144 Right () -> pure (Right ())

1068 Right () -> pure (Right ())

1145validateMerkleHashes sessionId conn@RemoteConnection{} = remoteCall conn (ExecuteValidateMerkleHashes sessionId)

1069validateMerkleHashes 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+6−6

@@ -2,7 +2,7 @@

2{- A dataframe is a strongly-typed, ordered list of named tuples. A dataframe differs from a relation in that its tuples are ordered.-}

3module ProjectM36.DataFrame where

4import ProjectM36.Base

5−import ProjectM36.Attribute as A

5+import ProjectM36.Attribute as A hiding (drop)

6import ProjectM36.Error

7import qualified ProjectM36.Relation as R

8import ProjectM36.Relation.Show.Term

@@ -81,7 +81,7 @@ compareTupleByOneAttributeName attr tuple1 tuple2 =

81 Right atom2 -> compareAtoms atom1 atom2

82

83atomForAttributeName :: AttributeName -> DataFrameTuple -> Either RelationalError Atom

84−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

85 Nothing -> Left (NoSuchAttributeNamesError (S.singleton attrName))

86 Just index -> case tupVec V.!? index of

87 Nothing -> Left (NoSuchAttributeNamesError (S.singleton attrName))

@@ -134,12 +134,12 @@ data DataFrameExpr = DataFrameExpr {

134dataFrameAsHTML :: DataFrame -> T.Text

135-- 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

136dataFrameAsHTML df

137− | length (tuples df) == 1 && L.null (attributes df) = style <>

137+ | length (tuples df) == 1 && A.null (attributes df) = style <>

138 tablestart <>

139 "<tr><th></th></tr>" <>

140 "<tr><td></td></tr>" <>

141 tablefooter <> "</table>"

142− | L.null (tuples df) && L.null (attributes df) = style <>

142+ | L.null (tuples df) && A.null (attributes df) = style <>

143 tablestart <>

144 "<tr><th></th></tr>" <>

145 tablefooter <>

@@ -162,7 +162,7 @@ tuplesAsHTML = foldr folder ""

162 folder tuple acc = acc <> tupleAsHTML tuple

163

164tupleAssocs :: DataFrameTuple -> [(AttributeName, Atom)]

165−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)

166

167

168tupleAsHTML :: DataFrameTuple -> T.Text

@@ -174,7 +174,7 @@ tupleAsHTML tuple = "<tr>" <> T.concat (L.map tupleFrag (tupleAssocs tuple)) <>

174 atomAsHTML atom = atomToText atom

175

176attributesAsHTML :: Attributes -> [AttributeOrder] -> T.Text

177−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>"

178 where

179 oneAttrHTML attr = "<th>" <> prettyAttribute attr <> ordering (attributeName attr) <> "</th>"

180 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

37 BoolAtomType -> False

38 RelationAtomType _ -> False

39 ConstructedAtomType _ _ -> False --once we support an interval-style typeclass, we might enable this

40+ RelationalExprAtomType -> False

40 TypeVariableType _ -> False

41 TypeVariableType _ -> False

41

42

42supportsOrdering :: AtomType -> Bool

43supportsOrdering :: AtomType -> Bool

@@ -50,6 +51,7 @@ supportsOrdering typ = case typ of

50 ByteStringAtomType -> False

51 ByteStringAtomType -> False

51 BoolAtomType -> False

52 BoolAtomType -> False

52 RelationAtomType _ -> False

53 RelationAtomType _ -> False

54+ RelationalExprAtomType -> False

53 ConstructedAtomType _ _ -> False --once we support an interval-style typeclass, we might enable this

55 ConstructedAtomType _ _ -> False --once we support an interval-style typeclass, we might enable this

54 TypeVariableType _ -> False

56 TypeVariableType _ -> False

55

57

src/lib/ProjectM36/DataTypes/Primitive.hs+1

@@ -42,3 +42,4 @@ atomTypeForAtom (ByteStringAtom _) = ByteStringAtomType

42atomTypeForAtom (BoolAtom _) = BoolAtomType

43atomTypeForAtom (RelationAtom (Relation attrs _)) = RelationAtomType attrs

44atomTypeForAtom (ConstructedAtom _ aType _) = aType

45+atomTypeForAtom (RelationalExprAtom _) = RelationalExprAtomType

src/lib/ProjectM36/DataTypes/Sorting.hs+1

@@ -24,6 +24,7 @@ isSortableAtomType typ = case typ of

24 DateTimeAtomType -> True

25 ByteStringAtomType -> False

26 BoolAtomType -> True

27+ RelationalExprAtomType -> False

27 RelationAtomType _ -> False

28 RelationAtomType _ -> False

28 ConstructedAtomType _ _ -> False

29 ConstructedAtomType _ _ -> False

29 TypeVariableType _ -> False

30 TypeVariableType _ -> False

src/lib/ProjectM36/Error.hs+10−2

@@ -81,7 +81,7 @@ data RelationalError = NoSuchAttributeNamesError (S.Set AttributeName)

81 | RelationValuedAttributesNotSupportedError [AttributeName]

82 | NotificationNameInUseError NotificationName

83 | NotificationNameNotInUseError NotificationName

84− | 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'

85 | ExportError T.Text

86 | UnhandledExceptionError String

87 | MergeTransactionError MergeError

@@ -144,4 +144,12 @@ data SchemaError = RelVarReferencesMissing (S.Set RelVarName) |

144 RelVarInReferencedMoreThanOnce RelVarName |

145 RelVarOutReferencedMoreThanOnce RelVarName

146 deriving (Show, Eq, Generic, Typeable, NFData)

147−

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

4import ProjectM36.Error

5import ProjectM36.Relation

6import qualified Data.Map as M

7−import qualified Data.Text as T

8

7

9inclusionDependenciesAsRelation :: InclusionDependencies -> Either RelationalError Relation

8inclusionDependenciesAsRelation :: InclusionDependencies -> Either RelationalError Relation

10inclusionDependenciesAsRelation incDeps =

9inclusionDependenciesAsRelation incDeps =

11 mkRelationFromList attrs (map incDepAsAtoms (M.toList incDeps))

10 mkRelationFromList attrs (map incDepAsAtoms (M.toList incDeps))

12 where

11 where

13 attrs = attributesFromList [Attribute "name" TextAtomType,

12 attrs = attributesFromList [Attribute "name" TextAtomType,

14− Attribute "sub" TextAtomType,

13+ Attribute "sub" RelationalExprAtomType,

15− Attribute "super" TextAtomType

14+ Attribute "super" RelationalExprAtomType

16 ]

15 ]

17 incDepAsAtoms (name, InclusionDependency exprA exprB) = [TextAtom name,

16 incDepAsAtoms (name, InclusionDependency exprA exprB) = [TextAtom name,

18− TextAtom (T.pack (show exprA)),

17+ RelationalExprAtom exprA,

19− TextAtom (T.pack (show exprB))]

18+ RelationalExprAtom exprB]

20−

19+

src/lib/ProjectM36/Relation.hs+17−22

@@ -9,7 +9,6 @@ import ProjectM36.Tuple

9import qualified ProjectM36.Attribute as A

10import ProjectM36.TupleSet

11import ProjectM36.Error

12−import ProjectM36.MiscUtils

13--import qualified Control.Parallel.Strategies as P

12--import qualified Control.Parallel.Strategies as P

14import qualified ProjectM36.TypeConstructorDef as TCD

13import qualified ProjectM36.TypeConstructorDef as TCD

15import qualified ProjectM36.DataConstructorDef as DCD

14import qualified ProjectM36.DataConstructorDef as DCD

@@ -17,7 +16,6 @@ import qualified Data.Text as T

17import Data.Either (isRight)

16import Data.Either (isRight)

18import System.Random.Shuffle

17import System.Random.Shuffle

19import Control.Monad.Random

18import Control.Monad.Random

20−import Data.List (sort)

21

19

22attributes :: Relation -> Attributes

20attributes :: Relation -> Attributes

23attributes (Relation attrs _ ) = attrs

21attributes (Relation attrs _ ) = attrs

@@ -35,7 +33,7 @@ atomTypeForName :: AttributeName -> Relation -> Either RelationalError AtomType

35atomTypeForName attrName (Relation attrs _) = A.atomTypeForAttributeName attrName attrs

33atomTypeForName attrName (Relation attrs _) = A.atomTypeForAttributeName attrName attrs

36

34

37mkRelationFromList :: Attributes -> [[Atom]] -> Either RelationalError Relation

35mkRelationFromList :: Attributes -> [[Atom]] -> Either RelationalError Relation

38−mkRelationFromList attrs atomMatrix =

36+mkRelationFromList attrs atomMatrix = do

39 Relation attrs <$> mkTupleSetFromList attrs atomMatrix

37 Relation attrs <$> mkTupleSetFromList attrs atomMatrix

40

38

41emptyRelationWithAttrs :: Attributes -> Relation

39emptyRelationWithAttrs :: Attributes -> Relation

@@ -43,11 +41,6 @@ emptyRelationWithAttrs attrs = Relation attrs emptyTupleSet

43

41

44mkRelation :: Attributes -> RelationTupleSet -> Either RelationalError Relation

42mkRelation :: Attributes -> RelationTupleSet -> Either RelationalError Relation

45mkRelation attrs tupleSet =

43mkRelation 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

51 --check that all tuples have the same keys

44 --check that all tuples have the same keys

52 --check that all tuples have keys (1-N) where N is the attribute count

45 --check that all tuples have keys (1-N) where N is the attribute count

53 case verifyTupleSet attrs tupleSet of

46 case verifyTupleSet attrs tupleSet of

@@ -93,13 +86,12 @@ union (Relation attrs1 tupSet1) (Relation attrs2 tupSet2) =

93 else

86 else

94 Right $ Relation attrs1 newtuples

87 Right $ Relation attrs1 newtuples

95 where

88 where

96− newtuples = RelationTupleSet $ HS.toList . HS.fromList $ asList tupSet1 ++ map (reorderTuple attrs1) (asList tupSet2)

89+ newtuples = tupleSetUnion attrs1 tupSet1 tupSet2

97−

90+

98project :: S.Set AttributeName -> Relation -> Either RelationalError Relation

91project :: S.Set AttributeName -> Relation -> Either RelationalError Relation

99project attrNames rel@(Relation _ tupSet) = do

92project attrNames rel@(Relation _ tupSet) = do

100 newAttrs <- A.projectionAttributesForNames attrNames (attributes rel)

93 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)

103 pure (Relation newAttrs (RelationTupleSet (HS.toList (HS.fromList newTupleList))))

95 pure (Relation newAttrs (RelationTupleSet (HS.toList (HS.fromList newTupleList))))

104

96

105rename :: AttributeName -> AttributeName -> Relation -> Either RelationalError Relation

97rename :: AttributeName -> AttributeName -> Relation -> Either RelationalError Relation

@@ -154,7 +146,7 @@ group groupAttrNames newAttrName rel = do

154 groupProjectionAttributes <- A.projectionAttributesForNames groupAttrNames (attributes rel)

146 groupProjectionAttributes <- A.projectionAttributesForNames groupAttrNames (attributes rel)

155 let groupAttr = Attribute newAttrName (RelationAtomType groupProjectionAttributes)

147 let groupAttr = Attribute newAttrName (RelationAtomType groupProjectionAttributes)

156 matchingRelTuple tupIn = case imageRelationFor tupIn rel of

148 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))

158 Left _ -> undefined

150 Left _ -> undefined

159 mogrifier tupIn = pure (tupleExtend tupIn (matchingRelTuple tupIn))

151 mogrifier tupIn = pure (tupleExtend tupIn (matchingRelTuple tupIn))

160 newAttrs = A.addAttribute groupAttr nonGroupProjectionAttributes

152 newAttrs = A.addAttribute groupAttr nonGroupProjectionAttributes

@@ -168,7 +160,8 @@ restrictEq :: RelationTuple -> Relation -> Either RelationalError Relation

168restrictEq tuple = restrict rfilter

160restrictEq tuple = restrict rfilter

169 where

161 where

170 rfilter :: RelationTuple -> Either RelationalError Bool

162 rfilter :: RelationTuple -> Either RelationalError Bool

163+ rfilter tupleIn = do

171− rfilter tupleIn = pure (tupleIntersection tuple tupleIn == tuple)

164+ pure (tupleIntersection tuple tupleIn == tuple)

172

165

173-- unwrap relation-valued attribute

166-- unwrap relation-valued attribute

174-- return error if relval attrs and nongroup attrs overlap

167-- return error if relval attrs and nongroup attrs overlap

@@ -190,13 +183,13 @@ ungroup relvalAttrName rel = case attributesForRelval relvalAttrName rel of

190tupleUngroup :: AttributeName -> Attributes -> RelationTuple -> Either RelationalError Relation

183tupleUngroup :: AttributeName -> Attributes -> RelationTuple -> Either RelationalError Relation

191tupleUngroup relvalAttrName newAttrs tuple = do

184tupleUngroup relvalAttrName newAttrs tuple = do

192 relvalRelation <- relationForAttributeName relvalAttrName tuple

185 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])

193 relFold folder (Right $ Relation newAttrs emptyTupleSet) relvalRelation

192 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])

200

193

201attributesForRelval :: AttributeName -> Relation -> Either RelationalError Attributes

194attributesForRelval :: AttributeName -> Relation -> Either RelationalError Attributes

202attributesForRelval relvalAttrName (Relation attrs _) = do

195attributesForRelval relvalAttrName (Relation attrs _) = do

@@ -251,7 +244,8 @@ relMap mapper (Relation attrs tupleSet) =

251

244

252relMogrify :: (RelationTuple -> Either RelationalError RelationTuple) -> Attributes -> Relation -> Either RelationalError Relation

245relMogrify :: (RelationTuple -> Either RelationalError RelationTuple) -> Attributes -> Relation -> Either RelationalError Relation

253relMogrify mapper newAttributes (Relation _ tupSet) = do

246relMogrify mapper newAttributes (Relation _ tupSet) = do

254− newTuples <- mapM mapper (asList tupSet)

247+ newTuples <- mapM (fmap (reorderTuple newAttributes) . mapper) (asList tupSet)

248+

255 mkRelationFromTuples newAttributes newTuples

249 mkRelationFromTuples newAttributes newTuples

256

250

257relFold :: (RelationTuple -> a -> a) -> a -> Relation -> a

251relFold :: (RelationTuple -> a -> a) -> a -> Relation -> a

@@ -297,7 +291,8 @@ typesAsRelation types = mkRelationFromTuples attrs tuples

297 dConsType = RelationAtomType subAttrs

291 dConsType = RelationAtomType subAttrs

298 tuples = map mkTypeConsDescription types

292 tuples = map mkTypeConsDescription types

299

293

294+ mkTypeConsDescription (tCons, dConsList) =

300− mkTypeConsDescription (tCons, dConsList) = RelationTuple attrs (V.fromList [TextAtom (TCD.name tCons), mkDataConsRelation dConsList])

295+ RelationTuple attrs (V.fromList [TextAtom (TCD.name tCons), mkDataConsRelation dConsList])

301

296

302 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

297 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

303 Left err -> error ("mkRelationFromTuples pooped " ++ show err)

298 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

38 let strHeader = V.map decodeUtf8 headerRaw

39 strMapRecords = V.map convertMap vecMapsRaw

40 convertMap hmap = HM.fromList $ L.map (decodeUtf8 *** (T.unpack . decodeUtf8)) (HM.toList hmap)

41− attrNames = V.map A.attributeName attrs

41+ attrNameSet = A.attributeNameSet attrs

42− attrNameSet = S.fromList (V.toList attrNames)

43 headerSet = S.fromList (V.toList strHeader)

42 headerSet = S.fromList (V.toList strHeader)

44 parseAtom attrName aType textIn = case APT.parseOnly (parseCSVAtomP attrName tConsMap aType <* APT.endOfInput) textIn of

43 parseAtom attrName aType textIn = case APT.parseOnly (parseCSVAtomP attrName tConsMap aType <* APT.endOfInput) textIn of

45 Left err -> Left (ParseError (T.pack err))

44 Left err -> Left (ParseError (T.pack err))

@@ -47,7 +46,7 @@ csvAsRelation attrs tConsMap inString = case APBL.parse (csvWithHeader csvDecode

47 makeTupleList :: HM.HashMap AttributeName String -> [Either CsvImportError Atom]

46 makeTupleList :: HM.HashMap AttributeName String -> [Either CsvImportError Atom]

48 makeTupleList tupMap = V.toList $ V.map (\attr ->

47 makeTupleList tupMap = V.toList $ V.map (\attr ->

49 either (Left . AttributeMappingError) Right $

48 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)

51 if attrNameSet == headerSet then do

50 if attrNameSet == headerSet then do

52 tupleList <- mapM sequence $ V.toList (V.map makeTupleList strMapRecords)

51 tupleList <- mapM sequence $ V.toList (V.map makeTupleList strMapRecords)

53 case mkRelationFromList attrs tupleList of

52 case mkRelationFromList attrs tupleList of

@@ -83,6 +82,11 @@ parseCSVAtomP _ _ BoolAtomType = do

83 case readMaybe bString of

82 case readMaybe bString of

84 Nothing -> fail ("invalid BoolAtom string: " ++ bString)

83 Nothing -> fail ("invalid BoolAtom string: " ++ bString)

85 Just b -> pure (Right (BoolAtom b))

84 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))

86parseCSVAtomP attrName tConsMap typ@(ConstructedAtomType _ tvmap)

90parseCSVAtomP attrName tConsMap typ@(ConstructedAtomType _ tvmap)

87 | isIntervalAtomType typ = do

91 | isIntervalAtomType typ = do

88 begin <- (APT.char '[' >> pure False) <|> (APT.char '(' >> pure True)

92 begin <- (APT.char '[' >> pure False) <|> (APT.char '(' >> pure True)

src/lib/ProjectM36/Relation/Show/CSV.hs+5−5

@@ -1,7 +1,7 @@

1{-# OPTIONS_GHC -fno-warn-orphans #-}

2module ProjectM36.Relation.Show.CSV where

3import ProjectM36.Base

4−import ProjectM36.Attribute

4+import ProjectM36.Attribute as A

5import Data.Csv

6import ProjectM36.Tuple

7import qualified Data.ByteString.Lazy as BS

@@ -17,13 +17,13 @@ relationAsCSV (Relation attrs tupleSet)

17 | relValAttrs /= [] =

18 Left $ RelationValuedAttributesNotSupportedError (map attributeName relValAttrs)

19 --check that there is at least one attribute

20− | V.null attrs =

20+ | A.null attrs =

21 Left $ TupleAttributeCountMismatchError 0

22 | otherwise =

23 Right $ encodeByName bsAttrNames $ map RecordRelationTuple (asList tupleSet)

24 where

25− relValAttrs = V.toList $ V.filter (isRelationAtomType . atomType) attrs

25+ relValAttrs = V.toList $ V.filter (isRelationAtomType . atomType) (attributesVec attrs)

26− bsAttrNames = V.map (TE.encodeUtf8 . attributeName) attrs

26+ bsAttrNames = V.map (TE.encodeUtf8 . attributeName) (attributesVec attrs)

27

28{-

29instance ToRecord RelationTuple where

@@ -36,7 +36,7 @@ instance ToNamedRecord RecordRelationTuple where

36 toNamedRecord rTuple = namedRecord $ map (\(k,v) -> TE.encodeUtf8 k .= RecordAtom v) (tupleAssocs $ unTuple rTuple)

37

38instance 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))

40

41newtype RecordAtom = RecordAtom {unAtom :: Atom}

42

src/lib/ProjectM36/Relation/Show/HTML.hs+2−2

@@ -3,6 +3,7 @@ import ProjectM36.Base

3import ProjectM36.Relation

4import ProjectM36.Tuple

5import ProjectM36.Atom

6+import ProjectM36.Attribute as A

6import ProjectM36.AtomType

7import ProjectM36.AtomType

7import qualified Data.List as L

8import qualified Data.List as L

8import Data.Text (Text, pack)

9import Data.Text (Text, pack)

@@ -11,10 +12,9 @@ import qualified Data.Text.IO as TIO

11#if __GLASGOW_HASKELL__ < 804

12#if __GLASGOW_HASKELL__ < 804

12import Data.Monoid

13import Data.Monoid

13#endif

14#endif

14−import qualified Data.Vector as V

15

16attributesAsHTML :: 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>"

18 where

19 oneAttrHTML attr = "<th>" <> prettyAttribute attr <> "</th>"

20

src/lib/ProjectM36/RelationalExpression.hs+148−302

@@ -1,6 +1,7 @@

1{-# LANGUAGE ScopedTypeVariables #-}

2{-# LANGUAGE FlexibleInstances #-}

3{-# LANGUAGE FlexibleContexts #-}

4+{-# LANGUAGE OverloadedStrings #-}

4module ProjectM36.RelationalExpression where

5module ProjectM36.RelationalExpression where

5import ProjectM36.Relation

6import ProjectM36.Relation

6import ProjectM36.Tuple

7import ProjectM36.Tuple

@@ -40,6 +41,8 @@ import Control.Monad.Reader as R hiding (join)

40import ProjectM36.NormalizeExpr

41import ProjectM36.NormalizeExpr

41import ProjectM36.WithNameExpr

42import ProjectM36.WithNameExpr

42import Test.QuickCheck

43import Test.QuickCheck

44+import qualified Data.Functor.Foldable as Fold

45+import Control.Applicative

43#ifdef PM36_HASKELL_SCRIPTING

46#ifdef PM36_HASKELL_SCRIPTING

44import GHC hiding (getContext)

47import GHC hiding (getContext)

45import Control.Exception

48import Control.Exception

@@ -107,11 +110,11 @@ askEnv :: GraphRefRelationalExprM GraphRefRelationalExprEnv

107askEnv = R.ask

110askEnv = R.ask

108

111

109mergeTuplesIntoGraphRefRelationalExprEnv :: RelationTuple -> GraphRefRelationalExprEnv -> GraphRefRelationalExprEnv

112mergeTuplesIntoGraphRefRelationalExprEnv :: RelationTuple -> GraphRefRelationalExprEnv -> GraphRefRelationalExprEnv

110−mergeTuplesIntoGraphRefRelationalExprEnv tupIn e =

113+mergeTuplesIntoGraphRefRelationalExprEnv tupIn env =

111− e{ gre_extra = new_elems }

114+ env { gre_extra = new_elems }

112 where

115 where

113 new_elems = Just (Left newTuple)

116 new_elems = Just (Left newTuple)

114− mergedTupMap = M.union (tupleToMap tupIn) (tupleToMap (envTuple e))

117+ mergedTupMap = M.union (tupleToMap tupIn) (tupleToMap (envTuple env))

115 newTuple = mkRelationTupleFromMap mergedTupMap

118 newTuple = mkRelationTupleFromMap mergedTupMap

116

119

117mergeAttributesIntoGraphRefRelationalExprEnv :: Attributes -> GraphRefRelationalExprEnv -> GraphRefRelationalExprEnv

120mergeAttributesIntoGraphRefRelationalExprEnv :: Attributes -> GraphRefRelationalExprEnv -> GraphRefRelationalExprEnv

@@ -209,166 +212,13 @@ envContext = re_context

209setEnvContext :: RelationalExprEnv -> DatabaseContext -> RelationalExprEnv

212setEnvContext :: RelationalExprEnv -> DatabaseContext -> RelationalExprEnv

210setEnvContext e ctx = e { re_context = ctx }

213setEnvContext e ctx = e { re_context = ctx }

211

214

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−-}

366--helper function to process relation variable creation/assignment

215--helper function to process relation variable creation/assignment

367setRelVar :: RelVarName -> GraphRefRelationalExpr -> DatabaseContextEvalMonad ()

216setRelVar :: RelVarName -> GraphRefRelationalExpr -> DatabaseContextEvalMonad ()

368setRelVar relVarName relExpr = do

217setRelVar relVarName relExpr = do

369 currentContext <- getStateContext

218 currentContext <- getStateContext

370− --prevent recursive relvar definition

219+ --prevent recursive relvar definition by resolving references to relvars in previous states

220+ relExpr' <- resolve relExpr

371− let newRelVars = M.insert relVarName relExpr $ relationVariables currentContext

221+ let newRelVars = M.insert relVarName relExpr' $ relationVariables currentContext

372 potentialContext = currentContext { relationVariables = newRelVars }

222 potentialContext = currentContext { relationVariables = newRelVars }

373 --optimization: if the relexpr is unchanged, skip the update

223 --optimization: if the relexpr is unchanged, skip the update

374 if M.lookup relVarName (relationVariables currentContext) == Just relExpr then

224 if M.lookup relVarName (relationVariables currentContext) == Just relExpr then

@@ -381,6 +231,9 @@ setRelVar relVarName relExpr = do

381 Left err -> dbErr err

231 Left err -> dbErr err

382 Right _ -> putStateContext potentialContext

232 Right _ -> putStateContext potentialContext

383

233

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+

384-- 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

237-- 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

385deleteRelVar :: RelVarName -> DatabaseContextEvalMonad ()

238deleteRelVar :: RelVarName -> DatabaseContextEvalMonad ()

386deleteRelVar relVarName = do

239deleteRelVar relVarName = do

@@ -446,20 +299,36 @@ evalGraphRefDatabaseContextExpr (Assign relVarName expr) = do

446

299

447evalGraphRefDatabaseContextExpr (Insert relVarName relExpr) = do

300evalGraphRefDatabaseContextExpr (Insert relVarName relExpr) = do

448 gfExpr <- relVarByName relVarName

301 gfExpr <- relVarByName relVarName

302+ let optExpr = applyUnionCollapse (Union

303+ relExpr

304+ gfExpr)

449− evalGraphRefDatabaseContextExpr (Assign relVarName

305+ evalGraphRefDatabaseContextExpr (Assign relVarName optExpr)

450− (Union

451− gfExpr

452− relExpr))

453

306

454evalGraphRefDatabaseContextExpr (Delete relVarName predicate) = do

307evalGraphRefDatabaseContextExpr (Delete relVarName predicate) = do

455 gfExpr <- relVarByName relVarName

308 gfExpr <- relVarByName relVarName

456− setRelVar relVarName (Restrict (NotPredicate predicate) gfExpr)

309+ let optExpr = applyRestrictionCollapse (Restrict (NotPredicate predicate) gfExpr)

310+ setRelVar relVarName optExpr

457

311

458--union of restricted+updated portion and the unrestricted+unupdated portion

312--union of restricted+updated portion and the unrestricted+unupdated portion

459evalGraphRefDatabaseContextExpr (Update relVarName atomExprMap pred') = do

313evalGraphRefDatabaseContextExpr (Update relVarName atomExprMap pred') = do

460 rvExpr <- relVarByName relVarName

314 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

461 let unrestrictedPortion = Restrict (NotPredicate pred') rvExpr

323 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

463 updateAttr nam atomExpr = Extend (AttributeExtendTupleExpr (tmpAttr nam) atomExpr)

332 updateAttr nam atomExpr = Extend (AttributeExtendTupleExpr (tmpAttr nam) atomExpr)

464 projectAndRename attr expr = Rename (tmpAttr attr) attr (Project (InvertedAttributeNames (S.singleton attr)) expr)

333 projectAndRename attr expr = Rename (tmpAttr attr) attr (Project (InvertedAttributeNames (S.singleton attr)) expr)

465 restrictedPortion = Restrict pred' rvExpr

334 restrictedPortion = Restrict pred' rvExpr

@@ -773,21 +642,9 @@ evalGraphRefDatabaseContextIOExpr (CreateArbitraryRelation relVarName attrExprs

773 Left err -> pure (Left err)

642 Left err -> pure (Left err)

774 Right dbstate' -> putDBCIOContext (dbc_context dbstate')

643 Right dbstate' -> putDBCIOContext (dbc_context dbstate')

775

644

776−{-

777−updateTupleWithAtomExprs :: M.Map AttributeName AtomExpr -> DatabaseContext -> TransactionGraph -> RelationTuple -> Either RelationalError RelationTuple

778−updateTupleWithAtomExprs exprMap context graph tupIn = do

779− --resolve all atom exprs

780− let

781− atomsAssoc <- mapM (\(attrName, atomExpr) -> do

782− let atom = unimplemented

783− --atom <- runReader (evalAtomExpr tupIn atomExpr) (mkRelationalExprState context graph)

784− pure (attrName, atom)

785− ) (M.toList exprMap)

786− pure (updateTupleWithAtoms (M.fromList atomsAssoc) tupIn)

787−-}

788--run verification on all constraints

645--run verification on all constraints

789checkConstraints :: DatabaseContext -> TransactionId -> TransactionGraph -> Either RelationalError ()

646checkConstraints :: DatabaseContext -> TransactionId -> TransactionGraph -> Either RelationalError ()

790−checkConstraints context transId graph@(TransactionGraph graphHeads transSet) =

647+checkConstraints context transId graph@(TransactionGraph graphHeads transSet) = do

791 mapM_ (uncurry checkIncDep) (M.toList deps)

648 mapM_ (uncurry checkIncDep) (M.toList deps)

792 where

649 where

793 potentialGraph = TransactionGraph graphHeads (S.insert tempTrans transSet)

650 potentialGraph = TransactionGraph graphHeads (S.insert tempTrans transSet)

@@ -836,15 +693,6 @@ typeForRelationalExpr expr = do

836 runGf = runGraphRefRelationalExprM gfEnv (typeForGraphRefRelationalExpr gfExpr)

693 runGf = runGraphRefRelationalExprM gfEnv (typeForGraphRefRelationalExpr gfExpr)

837 lift $ except runGf

694 lift $ except runGf

838

695

839−--returns a database context with all tuples removed

840−--this is useful for type checking and optimization

841−{-

842−contextWithEmptyTupleSets :: DatabaseContext -> DatabaseContext

843−contextWithEmptyTupleSets contextIn = contextIn { relationVariables = relVars }

844− where

845− relVars = M.map (\rel -> ExistingRelation (Relation (attributes rel) emptyTupleSet)) (relationVariables contextIn)

846−-}

847−

848liftE :: (Monad m) => m (Either a b) -> ExceptT a m b

696liftE :: (Monad m) => m (Either a b) -> ExceptT a m b

849liftE v = do

697liftE v = do

850 y <- lift v

698 y <- lift v

@@ -1000,58 +848,6 @@ evalGraphRefAtomExpr tupIn cons@(ConstructedAtomExpr dConsName dConsArgs _) = do

1000 mapM (evalGraphRefAtomExpr tupIn) dConsArgs

848 mapM (evalGraphRefAtomExpr tupIn) dConsArgs

1001 pure (ConstructedAtom dConsName aType argAtoms)

849 pure (ConstructedAtom dConsName aType argAtoms)

1002

850

1003−{-

1004−evalAtomExpr :: RelationTuple -> AtomExpr -> RelationalExprM Atom

1005−evalAtomExpr tupIn expr =

1006− -}

1007−{-

1008−

1009−evalAtomExpr tupIn (AttributeAtomExpr attrName) = case atomForAttributeName attrName tupIn of

1010− Right atom -> pure (Right atom)

1011− err@(Left (NoSuchAttributeNamesError _)) -> do

1012− rstate <- ask

1013− let stateTup = stateTuple rstate

1014− pure (atomForAttributeName attrName stateTup)

1015− Left err -> pure (Left err)

1016−evalAtomExpr _ (NakedAtomExpr atom) = pure (Right atom)

1017−evalAtomExpr tupIn (FunctionAtomExpr funcName arguments ()) = do

1018− argTypes <- mapM (typeFromAtomExpr (tupleAttributes tupIn)) arguments

1019− context <- fmap stateElemsContext ask

1020− runExceptT $ do

1021− let functions = atomFunctions context

1022− func <- either throwE pure (atomFunctionForName funcName functions)

1023− let expectedArgCount = length (atomFuncType func) - 1

1024− actualArgCount = length argTypes

1025− safeInit [] = [] -- different behavior from normal init

1026− safeInit xs = init xs

1027− if expectedArgCount /= actualArgCount then

1028− throwE (FunctionArgumentCountMismatchError expectedArgCount actualArgCount)

1029− else do

1030− let zippedArgs = zip (safeInit (atomFuncType func)) argTypes

1031− mapM_ (\(expType, eActType) -> do

1032− actType <- either throwE pure eActType

1033− either throwE pure (atomTypeVerify expType actType)) zippedArgs

1034− evaldArgs <- mapM (liftE . evalAtomExpr tupIn) arguments

1035− case evalAtomFunction func evaldArgs of

1036− Left err -> throwE (AtomFunctionUserError err)

1037− Right result -> do

1038− --validate that the result matches the expected type

1039− _ <- either throwE pure (atomTypeVerify (last (atomFuncType func)) (atomTypeForAtom result))

1040− pure result

1041−evalAtomExpr tupIn (RelationAtomExpr relExpr) = do

1042− --merge existing state tuple context into new state tuple context to support an arbitrary number of levels, but new attributes trounce old attributes

1043− rstate <- ask

1044− runExceptT $ do

1045− let newState = mergeTuplesIntoRelationalExprState tupIn rstate

1046− relAtom <- either throwE pure (runReader (evalRelationalExpr relExpr) newState)

1047− pure (RelationAtom relAtom)

1048−evalAtomExpr tupIn cons@(ConstructedAtomExpr dConsName dConsArgs ()) = runExceptT $ do

1049− rstate <- lift ask

1050− let newState = mergeTuplesIntoRelationalExprState tupIn rstate

1051− aType <- either throwE pure (runReader (typeFromAtomExpr (tupleAttributes tupIn) cons) newState)

1052− argAtoms <- mapM (\arg -> either throwE pure (runReader (evalAtomExpr tupIn arg) newState)) dConsArgs

1053− pure (ConstructedAtom dConsName aType argAtoms)

1054−-}

1055typeForGraphRefAtomExpr :: Attributes -> GraphRefAtomExpr -> GraphRefRelationalExprM AtomType

851typeForGraphRefAtomExpr :: Attributes -> GraphRefAtomExpr -> GraphRefRelationalExprM AtomType

1056typeForGraphRefAtomExpr attrs (AttributeAtomExpr attrName) = do

852typeForGraphRefAtomExpr attrs (AttributeAtomExpr attrName) = do

1057 renv <- askEnv

853 renv <- askEnv

@@ -1118,7 +914,7 @@ verifyGraphRefAtomExprTypes relIn (FunctionAtomExpr funcName funcArgExprs tid) e

1118 let handler :: RelationalError -> GraphRefRelationalExprM AtomType

914 let handler :: RelationalError -> GraphRefRelationalExprM AtomType

1119 handler (AtomTypeMismatchError expSubType actSubType) = throwError (AtomFunctionTypeError funcName argCount expSubType actSubType)

915 handler (AtomTypeMismatchError expSubType actSubType) = throwError (AtomFunctionTypeError funcName argCount expSubType actSubType)

1120 handler err = throwError err

916 handler err = throwError err

1121− verifyGraphRefAtomExprTypes relIn atomExpr expectedType2 `catchError` handler

917+ verifyGraphRefAtomExprTypes relIn atomExpr expectedType2 `catchError` handler

1122 funcArgTypes <- mapM funcArgVerifier $ zip3 funcArgExprs expectedArgTypes [1..]

918 funcArgTypes <- mapM funcArgVerifier $ zip3 funcArgExprs expectedArgTypes [1..]

1123 if length funcArgTypes /= length expectedArgTypes - 1 then

919 if length funcArgTypes /= length expectedArgTypes - 1 then

1124 throwError (AtomTypeCountError funcArgTypes expectedArgTypes)

920 throwError (AtomTypeCountError funcArgTypes expectedArgTypes)

@@ -1164,7 +960,7 @@ evalGraphRefTupleExprs mAttrs (TupleExprs fixedMarker tupleExprL) = do

1164 lift $ except $ resolveAttributes accAttr tupAttr

960 lift $ except $ resolveAttributes accAttr tupAttr

1165 mostResolvedTypes <-

961 mostResolvedTypes <-

1166 foldM (\acc tup -> do

962 foldM (\acc tup -> do

1167− let zipped = zip (V.toList $ tupleAttributes tup) acc

963+ let zipped = zip (V.toList . attributesVec $ tupleAttributes tup) acc

1168 accNames = S.fromList $ map A.attributeName acc

964 accNames = S.fromList $ map A.attributeName acc

1169 tupNames = A.attributeNameSet (tupleAttributes tup)

965 tupNames = A.attributeNameSet (tupleAttributes tup)

1170 attrNamesDiff = S.union (S.difference accNames tupNames) (S.difference tupNames accNames)

966 attrNamesDiff = S.union (S.difference accNames tupNames) (S.difference tupNames accNames)

@@ -1175,7 +971,7 @@ evalGraphRefTupleExprs mAttrs (TupleExprs fixedMarker tupleExprL) = do

1175 pure nextTupleAttrs

971 pure nextTupleAttrs

1176 else

972 else

1177 throwError (TupleAttributeTypeMismatchError diff)

973 throwError (TupleAttributeTypeMismatchError diff)

1178− ) (V.toList $ tupleAttributes headTuple) tailTuples

974+ ) (V.toList . attributesVec $ tupleAttributes headTuple) tailTuples

1179 pure (A.attributesFromList mostResolvedTypes)

975 pure (A.attributesFromList mostResolvedTypes)

1180 --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

976 --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

1181 tConsMap <- case singularTransactions tupleExprL of

977 tConsMap <- case singularTransactions tupleExprL of

@@ -1221,56 +1017,6 @@ evalGraphRefTupleExpr mAttrs (TupleExpr tupMap) = do

1221-- _ <- lift $ except (validateTuple tup' tConss)

1017-- _ <- lift $ except (validateTuple tup' tConss)

1222 pure tup'

1018 pure tup'

1223

1019

1224−{-

1225−evalAttributeNames :: AttributeNames -> RelationalExpr -> RelationalExprM (Either RelationalError (S.Set AttributeName))

1226−evalAttributeNames attrNames expr = do

1227− eExprType <- typeForRelationalExpr expr

1228− case eExprType of

1229− Left err -> throwError err

1230− Right exprTyp -> do

1231− let typeNameSet = S.fromList (V.toList (A.attributeNames (attributes exprTyp)))

1232− case attrNames of

1233− AttributeNames names ->

1234− case A.projectionAttributesForNames names (attributes exprTyp) of

1235− Left err -> pure (Left err)

1236− Right attrs -> pure (Right (S.fromList (V.toList (A.attributeNames attrs))))

1237−

1238− InvertedAttributeNames names -> do

1239− let nonExistentAttributeNames = A.attributeNamesNotContained names typeNameSet

1240− if not (S.null nonExistentAttributeNames) then

1241− pure (Left (AttributeNamesMismatchError nonExistentAttributeNames))

1242− else

1243− pure (Right (A.nonMatchingAttributeNameSet names typeNameSet))

1244−

1245− UnionAttributeNames namesA namesB -> do

1246− eNameSetA <- evalAttributeNames namesA expr

1247− case eNameSetA of

1248− Left err -> pure (Left err)

1249− Right nameSetA -> do

1250− eNameSetB <- evalAttributeNames namesB expr

1251− case eNameSetB of

1252− Left err -> pure (Left err)

1253− Right nameSetB ->

1254− pure (Right (S.union nameSetA nameSetB))

1255−

1256− IntersectAttributeNames namesA namesB -> do

1257− eNameSetA <- evalAttributeNames namesA expr

1258− case eNameSetA of

1259− Left err -> pure (Left err)

1260− Right nameSetA -> do

1261− eNameSetB <- evalAttributeNames namesB expr

1262− case eNameSetB of

1263− Left err -> pure (Left err)

1264− Right nameSetB ->

1265− pure (Right (S.intersection nameSetA nameSetB))

1266−

1267− RelationalExprAttributeNames attrExpr -> do

1268− eAttrExprType <- typeForRelationalExpr attrExpr

1269− case eAttrExprType of

1270− Left err -> pure (Left err)

1271− Right attrExprType -> pure (Right (A.attributeNameSet (attributes attrExprType)))

1272−-}

1273−

1274--temporary implementation until we have a proper planner+executor

1020--temporary implementation until we have a proper planner+executor

1275evalGraphRefRelationalExpr :: GraphRefRelationalExpr -> GraphRefRelationalExprM Relation

1021evalGraphRefRelationalExpr :: GraphRefRelationalExpr -> GraphRefRelationalExprM Relation

1276evalGraphRefRelationalExpr (MakeRelationFromExprs mAttrExprs tupleExprs) = do

1022evalGraphRefRelationalExpr (MakeRelationFromExprs mAttrExprs tupleExprs) = do

@@ -1499,7 +1245,7 @@ relationVariablesAsRelation ctx graph = do

1499 let gfEnv = freshGraphRefRelationalExprEnv (Just ctx) graph

1245 let gfEnv = freshGraphRefRelationalExprEnv (Just ctx) graph

1500 gfType <- runGraphRefRelationalExprM gfEnv (typeForGraphRefRelationalExpr gfExpr)

1246 gfType <- runGraphRefRelationalExprM gfEnv (typeForGraphRefRelationalExpr gfExpr)

1501 pure (rvName, gfType)

1247 pure (rvName, gfType)

1502− relVarToAtomList (rvName, rel) = [TextAtom rvName, attributesToRel (attributes rel)]

1248+ relVarToAtomList (rvName, rel) = [TextAtom rvName, attributesToRel (attributesVec (attributes rel))]

1503 attrAtoms a = [TextAtom (A.attributeName a), TextAtom (prettyAtomType (A.atomType a))]

1249 attrAtoms a = [TextAtom (A.attributeName a), TextAtom (prettyAtomType (A.atomType a))]

1504 attributesToRel attrl = case mkRelationFromList subrelAttrs (map attrAtoms (V.toList attrl)) of

1250 attributesToRel attrl = case mkRelationFromList subrelAttrs (map attrAtoms (V.toList attrl)) of

1505 Left err -> error ("relationVariablesAsRelation pooped " ++ show err)

1251 Left err -> error ("relationVariablesAsRelation pooped " ++ show err)

@@ -1519,15 +1265,6 @@ evalRelationalExpr expr = do

1519 Left err -> throwError err

1265 Left err -> throwError err

1520 Right rel -> pure rel

1266 Right rel -> pure rel

1521

1267

1522−{-

1523−relVarByName :: RelVarName -> GraphRefRelationalExprM GraphRefRelationalExpr

1524−relVarByName = do

1525− relvars <- relationVariables <$> getStateContext

1526− case M.lookup relVarName relvars of

1527− Nothing -> dbErr (RelVarNotDefinedError relVarName)

1528− Just gfexpr -> pure gfExpr

1529−-}

1530−

1531class (MonadError RelationalError m, Monad m) => DatabaseContextM m where

1268class (MonadError RelationalError m, Monad m) => DatabaseContextM m where

1532 getContext :: m DatabaseContext

1269 getContext :: m DatabaseContext

1533

1270

@@ -1544,3 +1281,112 @@ relVarByName rvName = do

1544 Nothing -> throwError (RelVarNotDefinedError rvName)

1281 Nothing -> throwError (RelVarNotDefinedError rvName)

1545 Just gfexpr -> pure gfexpr

1282 Just gfexpr -> pure gfexpr

1546

1283

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−2

@@ -128,8 +128,6 @@ initScriptSession ghcPkgPaths = do

128 "uuid",

129 "vector",

130 "text",

131− "binary",

132− "vector-binary-instances",

133 "time",

131 "time",

134 "project-m36",

132 "project-m36",

135 "bytestring"]

133 "bytestring"]

src/lib/ProjectM36/Serialise/Base.hs+10−1

@@ -10,6 +10,7 @@ import ProjectM36.MerkleHash

10import Data.UUID

11import Data.Proxy

12import Data.Word

13+import ProjectM36.Attribute as A

13import qualified Data.List.NonEmpty as NE

14import qualified Data.List.NonEmpty as NE

14import qualified Data.Vector as V

15import qualified Data.Vector as V

15import Data.Time.Calendar (Day,toGregorian,fromGregorian)

16import Data.Time.Calendar (Day,toGregorian,fromGregorian)

@@ -72,5 +73,13 @@ instance Serialise Day where

72 extractor = fromGregorianTup <$> extractor

73 extractor = fromGregorianTup <$> extractor

73 decodeCurrent = fromGregorianTup <$> decodeCurrent

74 decodeCurrent = fromGregorianTup <$> decodeCurrent

74

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

75

81

76−

82+ decodeCurrent = do

83+ n <- decodeVarInt

84+ l <- replicateM n decodeCurrent

85+ pure (A.attributesFromList l)

src/lib/ProjectM36/Serialise/Error.hs+1

@@ -12,3 +12,4 @@ deriving via WineryVariant MergeError instance Serialise MergeError

12deriving via WineryVariant ScriptCompilationError instance Serialise ScriptCompilationError

13deriving via WineryVariant PersistenceError instance Serialise PersistenceError

14deriving via WineryVariant SchemaError instance Serialise SchemaError

15+deriving via WineryVariant ImportError' instance Serialise ImportError'

src/lib/ProjectM36/Server.hs+1−1

@@ -24,7 +24,7 @@ requestHandlers testFlag ti =

24 RequestHandler (\sState (Login dbName) -> do

25 addClientLogin dbName sState

26 conn <- getConn sState

27− handleLogin dbName conn (connectionSocket sState)),

27+ handleLogin conn (connectionSocket sState)),

28 RequestHandler (\sState Logout -> do

29 conn <- getConn sState

30 handleLogout ti conn),

src/lib/ProjectM36/Server/Config.hs+6

@@ -12,6 +12,12 @@ data ServerConfig = ServerConfig { persistenceStrategy :: PersistenceStrategy,

12 }

13 deriving (Show)

14

15+data WebsocketServerConfig = WebsocketServerConfig { wsServerConfig :: ServerConfig,

16+ tlsCertificatePath :: Maybe String,

17+ tlsKeyPath :: Maybe String

18+ }

19+ deriving (Show)

20+

15defaultServerConfig :: ServerConfig

21defaultServerConfig :: ServerConfig

16defaultServerConfig = ServerConfig { persistenceStrategy = NoPersistence,

22defaultServerConfig = ServerConfig { persistenceStrategy = NoPersistence,

17 checkFS = True,

23 checkFS = True,

src/lib/ProjectM36/Server/EntryPoints.hs+11−7

@@ -5,8 +5,8 @@ import ProjectM36.IsomorphicSchema

5import ProjectM36.Client as C

6import Data.Map

7import Control.Concurrent (threadDelay)

8−import Network.RPC.Curryer.Server

8+import Network.RPC.Curryer.Server

9−import System.Timeout

9+import System.Timeout hiding (Timeout)

10import Network.Socket

11import Control.Exception

12

@@ -45,9 +45,9 @@ handleExecuteHeadName :: Maybe Timeout -> SessionId -> Connection -> IO (Either

45handleExecuteHeadName ti sessionId conn =

46 timeoutRelErr ti (headName sessionId conn)

47

48−handleLogin :: DatabaseName -> Connection -> Locking Socket -> IO Bool

48+handleLogin :: Connection -> Locking Socket -> IO Bool

49−handleLogin dbName conn lockSock = do

49+handleLogin conn lockSock = do

50− addClientNode dbName conn lockSock

50+ addClientNode conn lockSock

51 pure True

52

53handleExecuteGraphExpr :: Maybe Timeout -> SessionId -> Connection -> TransactionGraphOperator -> IO (Either RelationalError ())

@@ -122,8 +122,12 @@ handleLogout _ _ =

122

123handleTestTimeout :: Maybe Timeout -> SessionId -> Connection -> IO Bool

124handleTestTimeout ti _ _ = do

125− _ <- timeoutOrDie ti (threadDelay 100000 >> pure True)

125+ ret <- timeoutRelErr ti (threadDelay 100000 >> pure (Right ()))

126+ case ret of

126− pure True

127+ Right () -> pure True

128+ Left _ -> pure False

129+

130+

127

131

128handleRetrieveSessionIsDirty :: Maybe Timeout -> SessionId -> Connection -> IO (Either RelationalError Bool)

132handleRetrieveSessionIsDirty :: Maybe Timeout -> SessionId -> Connection -> IO (Either RelationalError Bool)

129handleRetrieveSessionIsDirty ti sessionId conn =

133handleRetrieveSessionIsDirty ti sessionId conn =

src/lib/ProjectM36/Server/ParseArgs.hs+31−14

@@ -17,14 +17,14 @@ parseArgsWithDefaults defaults = ServerConfig <$>

17 many parseGhcPkgPath <*>

18 parseTimeout (perRequestTimeout defaults) <*>

19 parseTestMode

20−

20+

21parsePersistenceStrategy :: Parser PersistenceStrategy

22parsePersistenceStrategy = CrashSafePersistence <$> (dbdirOpt <* fsyncOpt) <|>

23 MinimalPersistence <$> dbdirOpt <|>

24 pure NoPersistence

25− where

25+ where

26− dbdirOpt = strOption (short 'd' <>

26+ dbdirOpt = strOption (short 'd' <>

27− long "database-directory" <>

27+ long "database-directory" <>

28 metavar "DIRECTORY" <>

29 showDefaultWith show

30 )

@@ -34,43 +34,60 @@ parsePersistenceStrategy = CrashSafePersistence <$> (dbdirOpt <* fsyncOpt) <|>

34

35parseTestMode :: Parser Bool

36parseTestMode = flag True False (long "test-mode" <> hidden)

37−

37+

38−parseCheckFS :: Parser Bool

38+parseCheckFS :: Parser Bool

39parseCheckFS = flag True False (long "disable-fscheck" <>

40 help "Disable filesystem check for journaling.")

41−

41+

42parseDatabaseName :: Parser DatabaseName

43parseDatabaseName = strOption (short 'n' <>

44 long "database" <>

45 metavar "DATABASE_NAME")

46

47−parseHostname :: Hostname -> Parser Hostname

47+parseHostname :: Hostname -> Parser Hostname

48parseHostname defHostname = strOption (short 'h' <>

49 long "hostname" <>

50 metavar "HOST_NAME" <>

51 value defHostname)

52−

52+

53parsePort :: Port -> Parser Port

54parsePort defPort = option auto (short 'p' <>

55 long "port" <>

56 metavar "PORT_NUMBER" <>

57 value defPort)

58−

58+

59parseGhcPkgPath :: Parser String

60parseGhcPkgPath = strOption (long "ghc-pkg-dir" <>

61 metavar "GHC_PACKAGE_DIRECTORY")

62−

62+

63−parseTimeout :: Int -> Parser Int

63+parseTimeout :: Int -> Parser Int

64parseTimeout defTimeout = option auto (long "timeout" <>

65 metavar "MICROSECONDS" <>

66 value defTimeout)

67

68parseConfig :: IO ServerConfig

69parseConfig = parseConfigWithDefaults defaultServerConfig

70−

70+

71parseConfigWithDefaults :: ServerConfig -> IO ServerConfig

72parseConfigWithDefaults defaults = execParser (info (parseArgsWithDefaults defaults <**> helpOption) idm)

73

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")

74

91

75helpOption :: Parser (a -> a)

92helpOption :: Parser (a -> a)

76helpOption = abortOption helpText $ mconcat

93helpOption = abortOption helpText $ mconcat

@@ -80,6 +97,6 @@ helpOption = abortOption helpText $ mconcat

80 where

97 where

81#if MIN_VERSION_optparse_applicative(0,16,0)

98#if MIN_VERSION_optparse_applicative(0,16,0)

82 helpText = ShowHelpText Nothing

99 helpText = ShowHelpText Nothing

83−#else

100+#else

84 helpText = ShowHelpText

101 helpText = ShowHelpText

85#endif

102#endif

src/lib/ProjectM36/Server/RemoteCallTypes.hs−1

@@ -8,7 +8,6 @@ import ProjectM36.TransGraphRelationalExpression

8import ProjectM36.Session

9import ProjectM36.Serialise.DataFrame ()

10import ProjectM36.Serialise.IsomorphicSchema ()

11−import ProjectM36.Server.Types

12import GHC.Generics

11import GHC.Generics

13import Codec.Winery

12import Codec.Winery

14

13

src/lib/ProjectM36/Server/Types.hsdeleted−38

@@ -1,38 +0,0 @@

1−--types shared across server and client modules

2−module ProjectM36.Server.Types where

3−import StmContainers.Set as StmSet

4−import ProjectM36.Base

5−import Data.Hashable

6−import ProjectM36.Sessions

7−import Control.Concurrent.STM

8−import ProjectM36.ScriptSession

9−import ProjectM36.FileLock

10−import Control.Concurrent.MVar

11−import ProjectM36.TransactionGraph.Persist

12−import Network.RPC.Curryer.Server as RPC

13−import Network.Socket

14−

15−-- | The 'Connection' represents either local or remote access to a database. All operations flow through the connection.

16−type ClientNodes = StmSet.Set ClientInfo

17−

18−type DatabaseName = String

19−

20−-- internal structure specific to in-process connections

21−data InProcessConnectionConf = InProcessConnectionConf {

22− ipPersistenceStrategy :: PersistenceStrategy,

23− ipClientNodes :: ClientNodes,

24− ipSessions :: Sessions,

25− ipTransactionGraph :: TVar TransactionGraph,

26− ipScriptSession :: Maybe ScriptSession,

27− ipLocks :: Maybe (LockFile, MVar LockFileHash) -- nothing when NoPersistence

28− }

29−

30−-- clients may connect associate one socket with one database

31−data ClientInfo = ClientInfo { clientDatabaseName :: DatabaseName,

32− clientSocket :: RPC.Locking Socket }

33−

34−instance Eq ClientInfo where

35− a == b = RPC.lockless (clientSocket a) == RPC.lockless (clientSocket b)

36−

37−instance Hashable ClientInfo where

38− hashWithSalt salt ci = hashWithSalt salt (show (RPC.lockless (clientSocket ci)))

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

22

23-- the static optimizer performs optimizations which need not take any specific-relation statistics into account

24

25−--import Debug.Trace

26−

27data GraphRefSOptRelationalExprEnv =

25data GraphRefSOptRelationalExprEnv =

28 GraphRefSOptRelationalExprEnv

26 GraphRefSOptRelationalExprEnv

29 {

27 {

@@ -179,7 +177,7 @@ fullOptimizeGraphRefRelationalExpr expr = do

179optimizeGraphRefRelationalExpr :: GraphRefRelationalExpr -> GraphRefSOptRelationalExprM GraphRefRelationalExpr

177optimizeGraphRefRelationalExpr :: GraphRefRelationalExpr -> GraphRefSOptRelationalExprM GraphRefRelationalExpr

180optimizeGraphRefRelationalExpr e@(MakeStaticRelation _ _) = pure e

178optimizeGraphRefRelationalExpr e@(MakeStaticRelation _ _) = pure e

181

179

182−optimizeGraphRefRelationalExpr e@(MakeRelationFromExprs _ _) = pure e

180+optimizeGraphRefRelationalExpr e@MakeRelationFromExprs{} = pure e

183

181

184optimizeGraphRefRelationalExpr e@(ExistingRelation _) = pure e

182optimizeGraphRefRelationalExpr e@(ExistingRelation _) = pure e

185

183

@@ -209,6 +207,8 @@ optimizeGraphRefRelationalExpr (Union exprA exprB) = do

209 case (optExprA, optExprB) of

207 case (optExprA, optExprB) of

210 (Restrict predA (RelationVariable nameA sA),

208 (Restrict predA (RelationVariable nameA sA),

211 Restrict predB (RelationVariable nameB sB)) | nameA == nameB && sA == sB -> pure (Restrict (AndPredicate predA predB) (RelationVariable nameA sA))

209 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'

212 _ -> if optExprA == optExprB then

213 pure optExprA

214 else

@@ -575,3 +575,4 @@ applyStaticRestrictionPushdown expr = case expr of

575-- no optimizations available

576optimizeDatabaseContextIOExpr :: GraphRefDatabaseContextIOExpr -> GraphRefSOptDatabaseContextExprM GraphRefDatabaseContextIOExpr

577optimizeDatabaseContextIOExpr = pure

578+

src/lib/ProjectM36/TransactionGraph.hs+1−1

@@ -384,7 +384,7 @@ subGraphOfFirstCommonAncestor origGraph resultHeads currentTrans' goalTrans trav

384 else do

385 currentTransChildren <- childTransactions currentTrans' origGraph

386 let searchChildren = S.difference (S.insert currentTrans' traverseSet) currentTransChildren

387− searchChild start = pathToTransaction origGraph start goalTrans (S.insert currentTrans' traverseSet)

387+ searchChild start' = pathToTransaction origGraph start' goalTrans (S.insert currentTrans' traverseSet)

388 childSearches = map searchChild (S.toList searchChildren)

389 errors = lefts childSearches

390 pathsFound = rights childSearches

src/lib/ProjectM36/Tuple.hs+47−33

@@ -1,7 +1,7 @@

1module ProjectM36.Tuple where

2import ProjectM36.Base

3import ProjectM36.Error

4−import ProjectM36.Attribute

4+import ProjectM36.Attribute as A

5import ProjectM36.Atom

6import ProjectM36.AtomType

7import ProjectM36.DataTypes.Primitive

@@ -15,19 +15,19 @@ import Control.Arrow

15import Data.Maybe

16

17emptyTuple :: RelationTuple

18−emptyTuple = RelationTuple V.empty V.empty

18+emptyTuple = RelationTuple mempty mempty

19

20tupleSize :: RelationTuple -> Int

21−tupleSize (RelationTuple tupAttrs _) = V.length tupAttrs

21+tupleSize (RelationTuple tupAttrs _) = arity tupAttrs

22

23tupleAttributeNameSet :: RelationTuple -> S.Set AttributeName

24−tupleAttributeNameSet (RelationTuple tupAttrs _) = S.fromList $ V.toList $ V.map attributeName tupAttrs

24+tupleAttributeNameSet (RelationTuple tupAttrs _) = attributeNameSet tupAttrs

25

26tupleAttributes :: RelationTuple -> Attributes

27tupleAttributes (RelationTuple tupAttrs _) = tupAttrs

28

29tupleAssocs :: 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)

31

32orderedTupleAssocs :: RelationTuple -> [(AttributeName, Atom)]

33orderedTupleAssocs tup@(RelationTuple attrVec _) = map (\attr -> (attributeName attr, atomForAttr (attributeName attr))) oAttrs

@@ -42,7 +42,7 @@ tupleAtoms :: RelationTuple -> V.Vector Atom

42tupleAtoms (RelationTuple _ tupVec) = tupVec

43

44atomForAttributeName :: 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

46 Nothing -> Left (NoSuchAttributeNamesError (S.singleton attrName))

47 Just index -> case tupVec V.!? index of

48 Nothing -> Left (NoSuchAttributeNamesError (S.singleton attrName))

@@ -59,7 +59,7 @@ vectorIndicesForAttributeNames attrNameVec attrs = if not $ V.null unknownAttrNa

59 Right $ V.map mapper attrNameVec

60 where

61 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))

63

64

65relationForAttributeName :: AttributeName -> RelationTuple -> Either RelationalError Relation

@@ -86,10 +86,10 @@ mkRelationTuples attrs = map mapper

86 mapper = mkRelationTuple attrs

87

88mkRelationTupleFromMap :: 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))

90 where

91− attrNames = V.fromList (M.keys attrMap)

91+ attrNames = M.keys attrMap

92− attrs = V.map (\attrName -> Attribute attrName (atomTypeForAtom (attrMap M.! attrName))) attrNames

92+ attrs = map (\attrName -> Attribute attrName (atomTypeForAtom (attrMap M.! attrName))) attrNames

93

94--return error if attribute names match but their types do not

95singleTupleSetJoin :: Attributes -> RelationTuple -> RelationTupleSet -> Either RelationalError [RelationTuple]

@@ -120,8 +120,8 @@ singleTupleJoin joinedAttrs tup1@(RelationTuple tupAttrs1 _) tup2@(RelationTuple

120 return $ Just $ RelationTuple joinedAttrs newVec

121 where

122 keysIntersection = V.map attributeName attrsIntersection

123− attrsIntersection = V.filter (`V.elem` tupAttrs1) tupAttrs2

123+ attrsIntersection = V.filter (`V.elem` attributesVec tupAttrs1) (attributesVec tupAttrs2)

124− newVec = V.map (findAtomForAttributeName . attributeName) joinedAttrs

124+ newVec = V.map (findAtomForAttributeName . attributeName) (attributesVec joinedAttrs)

125 --search both tuples for the attribute

126 findAtomForAttributeName attrName = head $ rights $ fmap (atomForAttributeName attrName) [tup1, tup2]

127

@@ -138,23 +138,31 @@ vectorUnion v1 v2 = V.foldr folder v1 v2

138tupleExtend :: RelationTuple -> RelationTuple -> RelationTuple

139tupleExtend (RelationTuple tupAttrs1 tupVec1) (RelationTuple tupAttrs2 tupVec2) = RelationTuple newAttrs newVec

140 where

141− newAttrs = tupAttrs1 V.++ tupAttrs2

141+ newAttrs = tupAttrs1 <> tupAttrs2

142− newVec = tupVec1 V.++ tupVec2

142+ newVec = tupVec1 <> tupVec2

143

144tupleAtomExtend :: AttributeName -> Atom -> RelationTuple -> RelationTuple

145tupleAtomExtend newAttrName atom tupIn = tupleExtend tupIn newTup

146 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)

148

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

151tupleProject projectAttrs (RelationTuple attrs tupVec) = RelationTuple newAttrs newTupVec

150tupleProject projectAttrs (RelationTuple attrs tupVec) = RelationTuple newAttrs newTupVec

152 where

151 where

153− deleteIndices = V.findIndices (\attr -> S.notMember (attributeName attr) projectAttrs) attrs

152+ deleteIndices = V.findIndices (\attr -> S.notMember (attributeName attr) projectAttrs) (attributesVec attrs)

154 indexDeleter = V.ifilter (\index _ -> V.notElem index deleteIndices)

153 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'

156 newTupVec = indexDeleter tupVec

157 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)

158--return the attributes and atoms which are equal in both vectors

166--return the attributes and atoms which are equal in both vectors

159--semi-join

167--semi-join

160tupleIntersection :: RelationTuple -> RelationTuple -> RelationTuple

168tupleIntersection :: RelationTuple -> RelationTuple -> RelationTuple

@@ -162,12 +170,14 @@ tupleIntersection tuple1 tuple2 = RelationTuple newAttrs newTupVec

162 where

170 where

163 attrs1 = tupleAttributes tuple1

171 attrs1 = tupleAttributes tuple1

164 attrs2 = tupleAttributes tuple2

172 attrs2 = tupleAttributes tuple2

173+ intersectAttrs = A.intersection attrs1 attrs2

165− matchingIndices = V.findIndices (\attr -> V.elem attr attrs2 &&

174+ matchingIndices = V.findIndices (\attr -> A.member attr intersectAttrs &&

166− atomForAttributeName (attributeName attr) tuple1 ==

175+ atomForAttributeName (attributeName attr) tuple1 ==

167− atomForAttributeName (attributeName attr) tuple2

176+ atomForAttributeName (attributeName attr) tuple2) (attributesVec attrs1)

168− ) attrs1

169 indexFilter = V.ifilter (\index _ -> V.elem index matchingIndices)

177 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'

171 newTupVec = indexFilter (tupleAtoms tuple1)

181 newTupVec = indexFilter (tupleAtoms tuple1)

172

182

173-- | An optimized form of tuple update which updates vectors efficiently.

183-- | An optimized form of tuple update which updates vectors efficiently.

@@ -175,19 +185,20 @@ updateTupleWithAtoms :: M.Map AttributeName Atom -> RelationTuple -> RelationTup

175updateTupleWithAtoms updateMap (RelationTuple attrs tupVec) = RelationTuple attrs newVec

185updateTupleWithAtoms updateMap (RelationTuple attrs tupVec) = RelationTuple attrs newVec

176 where

186 where

177 updateKeysSet = M.keysSet updateMap

187 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))

179 newVec = V.update tupVec updateVec

189 newVec = V.update tupVec updateVec

180 updateVec = V.map (\(index, attr) -> (index, updateMap M.! attributeName attr)) updateKeysIVec

190 updateVec = V.map (\(index, attr) -> (index, updateMap M.! attributeName attr)) updateKeysIVec

181

191

182tupleToMap :: RelationTuple -> M.Map AttributeName Atom

192tupleToMap :: RelationTuple -> M.Map AttributeName Atom

183tupleToMap (RelationTuple attrs tupVec) = M.fromList assocList

193tupleToMap (RelationTuple attrs tupVec) = M.fromList assocList

184 where

194 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))

186

196

197+-- | Validate that the tuple has the correct attributes in the correct order

187verifyTuple :: Attributes -> RelationTuple -> Either RelationalError RelationTuple

198verifyTuple :: Attributes -> RelationTuple -> Either RelationalError RelationTuple

188−verifyTuple attrs tuple = let attrsTypes = V.map atomType attrs

199+verifyTuple attrs tuple = let attrsTypes = A.atomTypes attrs

189 tupleTypes = V.map atomTypeForAtom (tupleAtoms tuple) in

200 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

191 Left $ TupleAttributeCountMismatchError 0

202 Left $ TupleAttributeCountMismatchError 0

192 else do

203 else do

193 mapM_ (uncurry atomTypeVerify) (V.zip attrsTypes tupleTypes)

204 mapM_ (uncurry atomTypeVerify) (V.zip attrsTypes tupleTypes)

@@ -196,15 +207,18 @@ verifyTuple attrs tuple = let attrsTypes = V.map atomType attrs

196--two tuples can be equal but the vectors of attributes could be out-of-order

207--two tuples can be equal but the vectors of attributes could be out-of-order

197--reorder if necessary- this is useful during relMogrify so that all the relation's tuples have identical atom/attribute ordering

208--reorder if necessary- this is useful during relMogrify so that all the relation's tuples have identical atom/attribute ordering

198reorderTuple :: Attributes -> RelationTuple -> RelationTuple

209reorderTuple :: Attributes -> RelationTuple -> RelationTuple

199−reorderTuple attrs tupIn = if tupleAttributes tupIn == attrs then

210+reorderTuple attrs tupIn = if attributesAndOrderEqual (tupleAttributes tupIn) attrs then

200 tupIn

211 tupIn

201 else

212 else

202− RelationTuple attrs (V.map mapper attrs)

213+ RelationTuple attrs (V.map mapper (attributesVec attrs))

203 where

214 where

204 mapper attr = case atomForAttributeName (attributeName attr) tupIn of

215 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)

206 Right atom -> atom

217 Right atom -> atom

207

218

208--used in Generics derivation for ADTs without named attributes

219--used in Generics derivation for ADTs without named attributes

209trimTuple :: Int -> RelationTuple -> RelationTuple

220trimTuple :: 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)

31

32mkTupleSetFromList :: Attributes -> [[Atom]] -> Either RelationalError RelationTupleSet

33mkTupleSetFromList 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

38import qualified Data.Vector as V

39import GHC.Generics

40import ProjectM36.Atomable

41−import ProjectM36.Attribute hiding (null)

41+import ProjectM36.Attribute as A hiding (null, toList)

42import ProjectM36.Base

43import ProjectM36.DataTypes.Primitive

44import ProjectM36.Error

@@ -89,7 +89,7 @@ toInsertExpr vals rvName = do

89

90-- | 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'.

91toDefineExpr :: 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)))

93 where

94 attrs = toAttributes (Proxy :: Proxy a)

95

@@ -228,11 +228,12 @@ instance (Constructor c, TupleableG a, AtomableG a) => TupleableG (M1 C c a) whe

228 toTupleG opts (M1 v) = RelationTuple attrs atoms

229 where

230 attrsToCheck = toAttributesG opts v

231− counter = V.generate (V.length attrsToCheck) id

231+ counter = V.generate (arity attrsToCheck) id

232+ attrs = attributesFromList (V.toList attrsV)

232− attrs = V.zipWith (\num attr@(Attribute name typ) -> if T.null name then

233+ attrsV = V.zipWith (\num attr@(Attribute name typ) -> if T.null name then

233 Attribute ("attr" <> T.pack (show (num + 1))) typ

234 Attribute ("attr" <> T.pack (show (num + 1))) typ

234 else

235 else

235− attr) counter attrsToCheck

236+ attr) counter (attributesVec attrsToCheck)

236 atoms = V.fromList (toAtomsG v)

237 atoms = V.fromList (toAtomsG v)

237 toAttributesG opts (M1 v) = toAttributesG opts v

238 toAttributesG opts (M1 v) = toAttributesG opts v

238 fromTupleG opts tup = M1 <$> fromTupleG opts tup

239 fromTupleG opts tup = M1 <$> fromTupleG opts tup

@@ -241,7 +242,7 @@ instance (Constructor c, TupleableG a, AtomableG a) => TupleableG (M1 C c a) whe

241-- product types

242-- product types

242instance (TupleableG a, TupleableG b) => TupleableG (a :*: b) where

243instance (TupleableG a, TupleableG b) => TupleableG (a :*: b) where

243 toTupleG = error "toTupleG"

244 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

245 fromTupleG opts tup = (:*:) <$> fromTupleG opts tup <*> fromTupleG opts processedTuple

246 fromTupleG opts tup = (:*:) <$> fromTupleG opts tup <*> fromTupleG opts processedTuple

246 where

247 where

247 processedTuple = if isRecordTypeG (undefined :: a x) then

248 processedTuple = if isRecordTypeG (undefined :: a x) then

@@ -253,7 +254,7 @@ instance (TupleableG a, TupleableG b) => TupleableG (a :*: b) where

253--selector/record

254--selector/record

254instance (Selector c, AtomableG a) => TupleableG (M1 S c a) where

255instance (Selector c, AtomableG a) => TupleableG (M1 S c a) where

255 toTupleG = error "toTupleG"

256 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)

257 where

258 where

258 name = T.pack (selName m)

259 name = T.pack (selName m)

259 modifiedName = if T.null name then

260 modifiedName = if T.null name then

@@ -268,7 +269,7 @@ instance (Selector c, AtomableG a) => TupleableG (M1 S c a) where

268 val <- atomv atom

269 val <- atomv atom

269 pure (M1 val)

270 pure (M1 val)

270 where

271 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))))

272 atomv atom = maybe (Left (AtomTypeMismatchError

273 atomv atom = maybe (Left (AtomTypeMismatchError

273 expectedAtomType

274 expectedAtomType

274 (atomTypeForAtom atom)

275 (atomTypeForAtom atom)

src/lib/ProjectM36/WithNameExpr.hs+4−2

@@ -42,9 +42,11 @@ substituteWithNameMacros macros (NotEquals exprA exprB) =

42substituteWithNameMacros macros (Extend extendTup expr) =

43 Extend (substituteWitNameMacrosExtendTupleExpr macros extendTup) (substituteWithNameMacros macros expr)

44substituteWithNameMacros macros (With moreMacros expr) =

45− --collect and override existing macros and recurse

45+ --collect and update nested with exprs

46 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

48 --scan for a match- if it exists, replace it (representing a with clause at a lower level

50 --scan for a match- if it exists, replace it (representing a with clause at a lower level

49 substituteWithNameMacros newMacros expr

51 substituteWithNameMacros newMacros expr

50

52

stack.ghc8.0.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-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−- git: https://github.com/agentm/curryer.git

13− commit: 1e60c0580ca33d6ae1e97aaddc32189fdfe3ef6c

14−- data-accessor-transformers-0.2.1.7

15−- data-interval-1.2.0

16−- extended-reals-0.2.1.0

17−- gnuplot-0.5.4.1

18−- text-1.2.2.1

19−- aeson-1.2.1.00

20−- deferred-folds-0.6.12

21−- rset-1.0.0

22−

23−# Override default flag values for local packages and extra-deps

24−flags: {}

25−

26−# Extra package databases containing global packages

27−extra-package-dbs: []

28−

29−# Control whether we use the GHC we find on the path

30−# system-ghc: true

31−

32−# Require a specific version of stack, using version ranges

33−# require-stack-version: -any # Default

34−# require-stack-version: >= 1.0.0

35−

36−# Override the architecture used by stack, especially useful on Windows

37−# arch: i386

38−# arch: x86_64

39−

40−# Extra directories used by stack for building

41−# extra-include-dirs: [/path/to/dir]

42−# extra-lib-dirs: [/path/to/dir]

43−

44−# Allow a newer minor version of GHC than the snapshot specifies

45−# compiler-check: newer-minor

46−

47−allow-newer: true

48−

stack.ghc8.10.yamlnew file+19

@@ -0,0 +1,19 @@

1+resolver: lts-17.13

2+packages:

3+ - "."

4+

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−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-11.20

6−

7−# Local packages, usually specified by relative directory name

8−packages:

9−- '.'

10−

11−# Packages to be pulled from upstream that are not in the resolver (e.g., acme-missiles-0.3)

12−extra-deps:

13−- git: https://github.com/agentm/curryer.git

14− commit: 1e60c0580ca33d6ae1e97aaddc32189fdfe3ef6c

15−- data-accessor-transformers-0.2.1.7

16−- data-interval-1.2.0

17−- extended-reals-0.2.1.0

18−- gnuplot-0.5.4.1

19−- text-1.2.2.1

20−- aeson-1.2.1.00

21−- rset-1.0.0

22−

23−# Override default flag values for local packages and extra-deps

24−flags:

25− project-m36:

26− stack: true

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.ghc8.4.yamldeleted−46

@@ -1,46 +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−- git: https://github.com/agentm/curryer.git

13− commit: 1e60c0580ca33d6ae1e97aaddc32189fdfe3ef6c

14−- data-interval-1.3.0

15−- extended-reals-0.2.3.0

16−- rset-1.0.0

17−- hashable-time-0.2.0.2

18−- network-transport-tcp-0.6.0

19−

20−# Override default flag values for local packages and extra-deps

21−flags:

22− project-m36:

23− stack: true

24−

25−# Extra package databases containing global packages

26−extra-package-dbs: []

27−

28−# Control whether we use the GHC we find on the path

29−# system-ghc: true

30−

31−# Require a specific version of stack, using version ranges

32−# require-stack-version: -any # Default

33−# require-stack-version: >= 1.0.0

34−

35−# Override the architecture used by stack, especially useful on Windows

36−# arch: i386

37−# arch: x86_64

38−

39−# Extra directories used by stack for building

40−# extra-include-dirs: [/path/to/dir]

41−# extra-lib-dirs: [/path/to/dir]

42−

43−# Allow a newer minor version of GHC than the snapshot specifies

44−# compiler-check: newer-minor

45−

46−allow-newer: true

stack.ghc8.6.yaml+25−12

@@ -2,23 +2,36 @@

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-14.3

5+resolver: lts-14.27

6

7# Local packages, usually specified by relative directory name

8packages:

9−- '.'

9+ - "."

10# Packages to be pulled from upstream that are not in the resolver (e.g., acme-missiles-0.3)

11extra-deps:

12−- git: https://github.com/agentm/curryer.git

12+ - git: https://github.com/agentm/curryer.git

13− commit: 1e60c0580ca33d6ae1e97aaddc32189fdfe3ef6c

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

14−- extended-reals-0.2.3.0

20+ - extended-reals-0.2.3.0

15−- data-interval-2.0.1

21+ - data-interval-2.0.1

16−- stm-containers-1.1.0.4

22+ - stm-containers-1.1.0.4

17−- stm-hamt-1.2.0.4

23+ - stm-hamt-1.2.0.4

18−- rset-1.0.0

24+ - rset-1.0.0

19−- hashable-time-0.2.0.2

25+ - hashable-time-0.2.0.2

20−- network-transport-tcp-0.6.0

26+ - network-transport-tcp-0.6.0

21−- megaparsec-7.0.5

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

22

35

23# Override default flag values for local packages and extra-deps

36# Override default flag values for local packages and extra-deps

24flags:

37flags:

stack.ghc8.8.yaml+24−14

@@ -6,22 +6,32 @@ resolver: lts-16.4

6

7# Local packages, usually specified by relative directory name

8packages:

9−- '.'

9+ - "."

10# Packages to be pulled from upstream that are not in the resolver (e.g., acme-missiles-0.3)

11extra-deps:

12−- git: https://github.com/agentm/curryer.git

12+ - git: https://github.com/agentm/curryer.git

13− commit: 1e60c0580ca33d6ae1e97aaddc32189fdfe3ef6c

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

14−- extended-reals-0.2.3.0

20+ - extended-reals-0.2.3.0

15−- data-interval-2.0.1

21+ - data-interval-2.0.1

16−- stm-containers-1.1.0.4

22+ - stm-containers-1.1.0.4

17−- stm-hamt-1.2.0.4

23+ - stm-hamt-1.2.0.4

18−- rset-1.0.0

24+ - rset-1.0.0

19−- hashable-time-0.2.0.2

25+ - hashable-time-0.2.0.2

20−- network-transport-tcp-0.7.0

26+ - network-transport-tcp-0.7.0

21−- megaparsec-7.0.5

27+ - megaparsec-7.0.5

22−- network-2.8.0.1

28+ - network-2.8.0.1

23−- primitive-extras-0.8

29+ - primitive-extras-0.8

24−- primitive-unlifted-0.1.3.0

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

25

35

26# Override default flag values for local packages and extra-deps

36# Override default flag values for local packages and extra-deps

27flags:

37flags:

test/Client/Simple.hs+1−2

@@ -9,7 +9,6 @@ import System.IO.Temp

9import System.FilePath

10import ProjectM36.TupleSet

11import ProjectM36.Attribute

12−import qualified Data.Vector as V

13import qualified Data.Map as M

12import qualified Data.Map as M

14

13

15main :: IO ()

14main :: IO ()

@@ -59,7 +58,7 @@ testSimpleCommitFailure = TestCase $ do

59 execute $ Assign "x" (ExistingRelation relationTrue)

58 execute $ Assign "x" (ExistingRelation relationTrue)

60 --cause error

59 --cause error

61 execute $ Assign "x" (MakeStaticRelation failAttrs emptyTupleSet)

60 execute $ Assign "x" (MakeStaticRelation failAttrs emptyTupleSet)

62− let expectedErr = Left (RelError (RelationTypeMismatchError V.empty failAttrs))

61+ let expectedErr = Left (RelError (RelationTypeMismatchError mempty failAttrs))

63 assertEqual "dbc error" expectedErr err

62 assertEqual "dbc error" expectedErr err

64

63

65-- #176 default merge couldn't handle Update

64-- #176 default merge couldn't handle Update

test/Relation/Basic.hs+13−12

@@ -3,8 +3,6 @@ import ProjectM36.Base

3import ProjectM36.Relation

4import ProjectM36.Error

5import ProjectM36.DateExamples

6−import ProjectM36.TupleSet

7−import ProjectM36.Attribute hiding (null, attributeNames)

8import ProjectM36.DataTypes.Primitive

6import ProjectM36.DataTypes.Primitive

9import ProjectM36.RelationalExpression

7import ProjectM36.RelationalExpression

10import ProjectM36.TransactionGraph

8import ProjectM36.TransactionGraph

@@ -25,8 +23,8 @@ testList = TestList [testRelation "relationTrue" relationTrue, testRelation "rel

25 testRelation "products" productsRel,

23 testRelation "products" productsRel,

26 testRelation "supplierProducts" supplierProductsRel,

24 testRelation "supplierProducts" supplierProductsRel,

27 testMkRelationFromExprsBadAttrs,

25 testMkRelationFromExprsBadAttrs,

28− testDuplicateAttributes,

26+ testExistingRelationType,

29− testExistingRelationType

27+ testReorderTuple

30 ]

28 ]

31

29

32main :: IO ()

30main :: IO ()

@@ -65,7 +63,7 @@ validateAttrTypesMatchTupleAttrTypes rel@(Relation attrs tupSet) = foldr (\tuple

65 attrChecks tuple = V.map (\attr -> case atomForAttributeName (A.attributeName attr) tuple of

63 attrChecks tuple = V.map (\attr -> case atomForAttributeName (A.attributeName attr) tuple of

66 Left _ -> False

64 Left _ -> False

67 Right atom -> Right (atomTypeForAtom atom) ==

65 Right atom -> Right (atomTypeForAtom atom) ==

68− A.atomTypeForAttributeName (A.attributeName attr) attrs) (attributes rel)

66+ A.atomTypeForAttributeName (A.attributeName attr) attrs) (attributesVec (attributes rel))

69

67

70simpleRel :: Relation

68simpleRel :: Relation

71simpleRel = case mkRelation attrs tupleSet of

69simpleRel = case mkRelation attrs tupleSet of

@@ -103,16 +101,19 @@ testMkRelationFromExprsBadAttrs = TestCase $ do

103 Left err -> assertEqual "tuple type mismatch" (TupleAttributeTypeMismatchError (A.attributesFromList [Attribute "badAttr2" IntAtomType])) err

101 Left err -> assertEqual "tuple type mismatch" (TupleAttributeTypeMismatchError (A.attributesFromList [Attribute "badAttr2" IntAtomType])) err

104 Right _ -> assertFailure "expected tuple type mismatch"

102 Right _ -> assertFailure "expected tuple type mismatch"

105

103

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−

113testExistingRelationType :: Test

104testExistingRelationType :: Test

114testExistingRelationType = TestCase $ do

105testExistingRelationType = TestCase $ do

115 (graph, _) <- freshTransactionGraph dateExamples

106 (graph, _) <- freshTransactionGraph dateExamples

116 let typeResult = runRelationalExprM reenv (typeForRelationalExpr (ExistingRelation relationTrue))

107 let typeResult = runRelationalExprM reenv (typeForRelationalExpr (ExistingRelation relationTrue))

117 reenv = mkRelationalExprEnv dateExamples graph

108 reenv = mkRelationalExprEnv dateExamples graph

118 assertEqual "ExistingRelation with tuples type" (Right relationFalse) typeResult

109 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+18−6

@@ -8,13 +8,13 @@

8 , DataKinds

9 , TypeOperators

10 , AllowAmbiguousTypes

11+ , DerivingVia

11 #-}

12 #-}

12import Test.HUnit

13import Test.HUnit

13import ProjectM36.Tupleable.Deriving

14import ProjectM36.Tupleable.Deriving

14import ProjectM36.Atomable

15import ProjectM36.Atomable

15−import ProjectM36.Attribute

16+import ProjectM36.Attribute as A

16import ProjectM36.Error

17import ProjectM36.Error

17−import Data.Binary

18import ProjectM36.Base

19import Control.DeepSeq (NFData)

20import qualified Data.Vector as V

@@ -23,6 +23,7 @@ import qualified Data.Text as T

23import qualified Data.Set as S

24import System.Exit

25import Data.Proxy

26+import Codec.Winery

26

27

27{-# ANN module ("Hlint: ignore Use newtype instead of data" :: String) #-}

28{-# ANN module ("Hlint: ignore Use newtype instead of data" :: String) #-}

28

29

@@ -30,35 +31,43 @@ data Test1T = Test1C {

30 attrA :: Integer

31 attrA :: Integer

31 }

32 }

32 deriving (Generic, Eq, Show)

33 deriving (Generic, Eq, Show)

34+ deriving Serialise via WineryRecord Test1T

33

35

34data Test2T = Test2C {

36data Test2T = Test2C {

35 attrB :: Integer,

37 attrB :: Integer,

36 attrC :: Integer

38 attrC :: Integer

37 }

39 }

38 deriving (Generic, Eq, Show)

40 deriving (Generic, Eq, Show)

41+ deriving Serialise via WineryRecord Test2T

39

42

40data Test3T = Test3C Integer

43data Test3T = Test3C Integer

41 deriving (Generic, Eq, Show)

44 deriving (Generic, Eq, Show)

45+ deriving Serialise via WineryVariant Test3T

42

46

43data Test4T = Test4C

47data Test4T = Test4C

44 deriving (Generic, Eq, Show)

48 deriving (Generic, Eq, Show)

49+ deriving Serialise via WineryVariant Test4T

45

50

46data Test5T = Test5C1 Integer |

51data Test5T = Test5C1 Integer |

47 Test5C2 Integer

52 Test5C2 Integer

48 deriving (Generic, Eq, Show)

53 deriving (Generic, Eq, Show)

54+ deriving Serialise via WineryVariant Test5T

49

55

50data Test6T = Test6C T.Text Integer Double

56data Test6T = Test6C T.Text Integer Double

51 deriving (Generic, Eq, Show)

57 deriving (Generic, Eq, Show)

52

58

53data Test7A = Test7AC Integer

59data Test7A = Test7AC Integer

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

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

61+ deriving Serialise via WineryVariant Test7A

55

62

56

63

57data Test7T = Test7C Test7A

64data Test7T = Test7C Test7A

58 deriving (Generic, Show, Eq)

65 deriving (Generic, Show, Eq)

66+ deriving Serialise via WineryVariant Test7T

59

67

60data Test8T = Test8C

68data Test8T = Test8C

61 deriving (Generic, Show, Eq)

69 deriving (Generic, Show, Eq)

70+ deriving Serialise via WineryVariant Test8T

62

71

63data Test9T = Test9C

72data Test9T = Test9C

64 {

73 {

@@ -67,6 +76,7 @@ data Test9T = Test9C

67 attr9C :: Double

76 attr9C :: Double

68 }

77 }

69 deriving (Generic, Show, Eq)

78 deriving (Generic, Show, Eq)

79+ deriving Serialise via WineryRecord Test9T

70

80

71data Test10T = Test10C {

81data Test10T = Test10C {

72 longAttrNameA10 :: Integer,

82 longAttrNameA10 :: Integer,

@@ -74,6 +84,7 @@ data Test10T = Test10C {

74 longMixed_attr_NameC10 :: Integer

84 longMixed_attr_NameC10 :: Integer

75 }

85 }

76 deriving (Generic, Show, Eq)

86 deriving (Generic, Show, Eq)

87+ deriving Serialise via WineryRecord Test10T

77

88

78instance Tupleable Test1T

89instance Tupleable Test1T

79

90

@@ -99,7 +110,7 @@ main = do

99 if errors tcounts + failures tcounts > 0 then exitFailure else exitSuccess

110 if errors tcounts + failures tcounts > 0 then exitFailure else exitSuccess

100

111

101testList :: Test

112testList :: Test

102−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]

103

114

104testADT1 :: Test

115testADT1 :: Test

105testADT1 = TestCase $ assertEqual "one record constructor" (Right example) (fromTuple (toTuple example))

116testADT1 = TestCase $ assertEqual "one record constructor" (Right example) (fromTuple (toTuple example))

@@ -137,7 +148,7 @@ testADT7 :: Test

137testADT7 = TestCase $ do

148testADT7 = TestCase $ do

138 let example = Test7C (Test7AC 3)

149 let example = Test7C (Test7AC 3)

139 assertEqual "atom type" (Right example) (fromTuple (toTuple example))

150 assertEqual "atom type" (Right example) (fromTuple (toTuple example))

140− let expectedAttrs = V.singleton (Attribute "" (ConstructedAtomType "Test7A" M.empty))

151+ let expectedAttrs = A.singleton (Attribute "" (ConstructedAtomType "Test7A" M.empty))

141 assertEqual "adt atomtype" expectedAttrs (toAttributes (Proxy :: Proxy Test7T))

152 assertEqual "adt atomtype" expectedAttrs (toAttributes (Proxy :: Proxy Test7T))

142

153

143testADT8 :: Test

154testADT8 :: Test

@@ -211,7 +222,8 @@ testDeleteExpr = TestCase $ do

211testReorderedTuple :: Test

222testReorderedTuple :: Test

212testReorderedTuple = TestCase $ do

223testReorderedTuple = TestCase $ do

213 let tupleRev :: RelationTuple -> RelationTuple

224 let tupleRev :: RelationTuple -> RelationTuple

214− 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))

215 expected = Test2C {attrB = 3,

227 expected = Test2C {attrB = 3,

216 attrC = 4}

228 attrC = 4}

217 actual = fromTuple . tupleRev . toTuple $ expected

229 actual = fromTuple . tupleRev . toTuple $ expected

test/Server/Main.hs+19−20

@@ -5,7 +5,6 @@ test client/server interaction

5import Test.HUnit

6import ProjectM36.Client

7import qualified ProjectM36.Client as C

8−import ProjectM36.Server.EntryPoints

9import ProjectM36.Server

8import ProjectM36.Server

10import ProjectM36.Server.Config

9import ProjectM36.Server.Config

11import ProjectM36.Relation

10import ProjectM36.Relation

@@ -14,16 +13,8 @@ import ProjectM36.IsomorphicSchema

14import ProjectM36.Base

13import ProjectM36.Base

15

14

16import System.Exit

15import System.Exit

17−

16+import Network.Socket (SockAddr(..))

18import Control.Concurrent

17import 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−

27import Data.Either (isRight)

18import Data.Either (isRight)

28import Control.Exception

19import Control.Exception

29import System.IO.Temp

20import System.IO.Temp

@@ -32,6 +23,8 @@ import System.FilePath

32import System.Directory

23import System.Directory

33#endif

24#endif

34

25

26+type Timeout = Int

27+

35testList :: SessionId -> Connection -> MVar () -> Test

28testList :: SessionId -> Connection -> MVar () -> Test

36testList sessionId conn notificationTestMVar = TestList $ serverTests ++ sessionTests

29testList sessionId conn notificationTestMVar = TestList $ serverTests ++ sessionTests

37 where

30 where

@@ -49,7 +42,7 @@ testList sessionId conn notificationTestMVar = TestList $ serverTests ++ session

49 testRelationVariableSummary,

42 testRelationVariableSummary,

50 testNotification notificationTestMVar

43 testNotification notificationTestMVar

51 ]

44 ]

52− serverTests = [testRequestTimeout, testFileDescriptorCount]

45+ serverTests = [testRequestTimeout, testFileDescriptorCount, testClientConnectFail]

53

46

54main :: IO ()

47main :: IO ()

55main = do

48main = do

@@ -69,11 +62,9 @@ main = do

69testDatabaseName :: DatabaseName

62testDatabaseName :: DatabaseName

70testDatabaseName = "test"

63testDatabaseName = "test"

71

64

72−testConnection :: EndPointAddress -> MVar () -> IO (Either ConnectionError (SessionId, Connection))

65+testConnection :: Port -> MVar () -> IO (Either ConnectionError (SessionId, Connection))

73−testConnection serverAddress mvar = do

66+testConnection serverPort mvar = do

74− let Just (host, service, _) = decodeEndPointAddress serverAddress

75− serverAddress' = encodeEndPointAddress host service 1

76− let connInfo = RemoteProcessConnectionInfo testDatabaseName (NodeId serverAddress') (testNotificationCallback mvar)

67+ let connInfo = RemoteConnectionInfo testDatabaseName "127.0.0.1" (show serverPort) (testNotificationCallback mvar)

77 --putStrLn ("testConnection: " ++ show serverAddress)

68 --putStrLn ("testConnection: " ++ show serverAddress)

78 eConn <- connectProjectM36 connInfo

69 eConn <- connectProjectM36 connInfo

79 case eConn of

70 case eConn of

@@ -85,7 +76,7 @@ testConnection serverAddress mvar = do

85 Right sessionId -> pure $ Right (sessionId, conn)

76 Right sessionId -> pure $ Right (sessionId, conn)

86

77

87-- | A version of 'launchServer' which returns the port on which the server is listening on a secondary thread

78-- | 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)

89launchTestServer ti = do

80launchTestServer ti = do

90 addressMVar <- newEmptyMVar

81 addressMVar <- newEmptyMVar

91 tid <- forkIO $

82 tid <- forkIO $

@@ -99,9 +90,9 @@ launchTestServer ti = do

99 }

90 }

100

91

101 launchServer config (Just addressMVar) >> pure ()

92 launchServer config (Just addressMVar) >> pure ()

102− endPointAddress <- takeMVar addressMVar

93+ (SockAddrInet port _) <- takeMVar addressMVar

103 --liftIO $ putStrLn ("launched server on " ++ show endPointAddress)

94 --liftIO $ putStrLn ("launched server on " ++ show endPointAddress)

104− pure (endPointAddress, tid)

95+ pure (fromIntegral port, tid)

105

96

106testRelationalExpr :: SessionId -> Connection -> Test

97testRelationalExpr :: SessionId -> Connection -> Test

107testRelationalExpr sessionId conn = TestCase $ do

98testRelationalExpr sessionId conn = TestCase $ do

@@ -217,7 +208,7 @@ testRequestTimeout = TestCase $ do

217 Left err -> putStrLn ("failed to connect: " ++ show err) >> exitFailure

208 Left err -> putStrLn ("failed to connect: " ++ show err) >> exitFailure

218 Right (session, testConn) -> do

209 Right (session, testConn) -> do

219 res <- catchJust (\exc -> if exc == RequestTimeoutException then Just exc else Nothing) (callTestTimeout_ session testConn) (const (pure False))

210 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)

221 killThread serverTid

212 killThread serverTid

222

213

223testFileDescriptorCount :: Test

214testFileDescriptorCount :: Test

@@ -247,3 +238,11 @@ fdCount = do

247--pass on non-linux platforms

238--pass on non-linux platforms

248testFileDescriptorCount = TestCase (pure ())

239testFileDescriptorCount = TestCase (pure ())

249#endif

240#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

18import qualified Data.Map as M

19import qualified Data.ByteString.Lazy as BS

20import 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−

27

21

28--start the websocket server

22--start the websocket server

29-- run some tutoriald against it

23-- run some tutoriald against it

@@ -37,12 +31,12 @@ launchTestServer = do

37 testDatabaseName = "test"

31 testDatabaseName = "test"

38 -- start normal server

32 -- start normal server

39 _ <- forkIO (launchServer config (Just addressMVar) >> pure ())

33 _ <- forkIO (launchServer config (Just addressMVar) >> pure ())

40− serverAddress <- takeMVar addressMVar

34+ (SockAddrInet dbPort _) <- takeMVar addressMVar

41 let wsServerHost = "127.0.0.1"

35 let wsServerHost = "127.0.0.1"

42 wsServerPort = 8889

36 wsServerPort = 8889

43− Just (dbHost, dbPort, _) = decodeEndPointAddress serverAddress

37+ dbHost = "127.0.0.1"

44 -- start websocket server proxy -- runServer doesn't support returning an arbitrary socket

38 -- 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))

46 --wait for socket to be listening

40 --wait for socket to be listening

47 waitForListenSocket 5 (fromIntegral wsServerPort)

41 waitForListenSocket 5 (fromIntegral wsServerPort)

48 pure (fromIntegral wsServerPort, testDatabaseName)

42 pure (fromIntegral wsServerPort, testDatabaseName)

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+37−7

@@ -79,13 +79,16 @@ main = do

79 testInvalidDataConstructor,

80 testBasicList,

81 testRelationDeclarationMismatch,

82− testInvalidTuples

82+ testInvalidTuples,

83+ testSelfReferencingUncommittedContext,

84+ testUnionAndIntersectionAttributeExprs

83 ]

85 ]

84

86

85simpleRelTests :: Test

87simpleRelTests :: Test

86simpleRelTests = TestCase $ do

88simpleRelTests = TestCase $ do

87 (graph, transId) <- freshTransactionGraph dateExamples

89 (graph, transId) <- freshTransactionGraph dateExamples

90+ mapM_ (\(tutd, expected) ->

88− mapM_ (\(tutd, expected) -> assertTutdEqual basicDatabaseContext transId graph expected tutd) testTups

91+ assertTutdEqual basicDatabaseContext transId graph expected tutd) testTups

89 where

92 where

90 testTups = [("x:=true", Right relationTrue),

93 testTups = [("x:=true", Right relationTrue),

91 ("x:=false", Right relationFalse),

94 ("x:=false", Right relationFalse),

@@ -120,7 +123,8 @@ simpleRelTests = TestCase $ do

120 ("x:=relation{tuple{a 5}} : {b:=6}", mkRelationFromTuples simpleDAttributes [RelationTuple simpleDAttributes (V.fromList [IntegerAtom 5, IntegerAtom 6])]),

123 ("x:=relation{tuple{a 5}} : {b:=6}", mkRelationFromTuples simpleDAttributes [RelationTuple simpleDAttributes (V.fromList [IntegerAtom 5, IntegerAtom 6])]),

121 ("x:=relation{tuple{a 5}} : {b:=add(@a,5)}", mkRelationFromTuples simpleDAttributes [RelationTuple simpleDAttributes (V.fromList [IntegerAtom 5, IntegerAtom 10])]),

124 ("x:=relation{tuple{a 5}} : {b:=add(@a,5)}", mkRelationFromTuples simpleDAttributes [RelationTuple simpleDAttributes (V.fromList [IntegerAtom 5, IntegerAtom 10])]),

122 ("x:=relation{tuple{a 5}} : {b:=add(@a,\"spam\")}", Left (AtomFunctionTypeError "add" 2 IntegerAtomType TextAtomType)),

125 ("x:=relation{tuple{a 5}} : {b:=add(@a,\"spam\")}", Left (AtomFunctionTypeError "add" 2 IntegerAtomType TextAtomType)),

123− ("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 [])

124 ]

128 ]

125 simpleAAttributes = A.attributesFromList [Attribute "a" IntegerAtomType]

129 simpleAAttributes = A.attributesFromList [Attribute "a" IntegerAtomType]

126 simpleBAttributes = A.attributesFromList [Attribute "d" IntegerAtomType]

130 simpleBAttributes = A.attributesFromList [Attribute "d" IntegerAtomType]

@@ -132,7 +136,8 @@ simpleRelTests = TestCase $ do

132dateExampleRelTests :: Test

136dateExampleRelTests :: Test

133dateExampleRelTests = TestCase $ do

137dateExampleRelTests = TestCase $ do

134 (graph, transId) <- freshTransactionGraph dateExamples

138 (graph, transId) <- freshTransactionGraph dateExamples

139+ mapM_ (\(tutd, expected) ->

135− mapM_ (\(tutd, expected) -> assertTutdEqual dateExamples transId graph expected tutd) testTups

140+ assertTutdEqual dateExamples transId graph expected tutd) testTups

136 where

141 where

137 simpleEitherIntTextAttributes = A.attributesFromList [Attribute "a" (eitherAtomType IntegerAtomType TextAtomType)]

142 simpleEitherIntTextAttributes = A.attributesFromList [Attribute "a" (eitherAtomType IntegerAtomType TextAtomType)]

138 maybeIntegerAtomType = ConstructedAtomType "Maybe" (M.singleton "a" IntegerAtomType)

143 maybeIntegerAtomType = ConstructedAtomType "Maybe" (M.singleton "a" IntegerAtomType)

@@ -230,7 +235,7 @@ transactionGraphAddCommitTest = TestCase $ do

230 commit sessionId dbconn >>= eitherFail

235 commit sessionId dbconn >>= eitherFail

231 discon <- disconnectedTransaction_ sessionId dbconn

236 discon <- disconnectedTransaction_ sessionId dbconn

232 let context = Discon.concreteDatabaseContext discon

237 let context = Discon.concreteDatabaseContext discon

233− 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))

234

239

235transactionRollbackTest :: Test

240transactionRollbackTest :: Test

236transactionRollbackTest = TestCase $ do

241transactionRollbackTest = TestCase $ do

@@ -357,7 +362,7 @@ testComments :: Test

357testComments = TestCase $ do

362testComments = TestCase $ do

358 (sessionId, dbconn) <- dateExamplesConnection emptyNotificationCallback

363 (sessionId, dbconn) <- dateExamplesConnection emptyNotificationCallback

359 mapM_ (executeTutorialD sessionId dbconn) [

364 mapM_ (executeTutorialD sessionId dbconn) [

360− ":branch testbranch --test comment\n",

365+ ":branch testbranch --test comment",

361 ":jumphead {- test comment -} master"]

366 ":jumphead {- test comment -} master"]

362

367

363-- create a graph and query from two disparate contexts

368-- create a graph and query from two disparate contexts

@@ -540,7 +545,7 @@ testListConstructedAtom = TestCase $ do

540testTypeChecker :: Test

545testTypeChecker :: Test

541testTypeChecker = TestCase $ do

546testTypeChecker = TestCase $ do

542 (sessionId, dbconn) <- dateExamplesConnection emptyNotificationCallback

547 (sessionId, dbconn) <- dateExamplesConnection emptyNotificationCallback

543− let err1 = "AtomFunctionTypeError \"max\" 1 (RelationAtomType [Attribute \"_\" IntegerAtomType]) IntegerAtomType"

548+ let err1 = "AtomFunctionTypeError \"max\" 1"

544 expectTutorialDErr sessionId dbconn (T.isPrefixOf err1) "x:=relation{tuple{a 0}}:{b:=max(@a)}"

549 expectTutorialDErr sessionId dbconn (T.isPrefixOf err1) "x:=relation{tuple{a 0}}:{b:=max(@a)}"

545

550

546--exercise expression parser

551--exercise expression parser

@@ -660,6 +665,10 @@ testWithClause = TestCase $ do

660 executeTutorialD sessionId dbconn "x:=with (x as s) x"

665 executeTutorialD sessionId dbconn "x:=with (x as s) x"

661 eX <- executeRelationalExpr sessionId dbconn (RelationVariable "x" ())

666 eX <- executeRelationalExpr sessionId dbconn (RelationVariable "x" ())

662 assertEqual "with x as s" (Right suppliersRel) eX

667 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

663

672

664 let err1 = "RelVarAlreadyDefinedError"

673 let err1 = "RelVarAlreadyDefinedError"

665 expectTutorialDErr sessionId dbconn (T.isPrefixOf err1) "x:=with (s as s) s"

674 expectTutorialDErr sessionId dbconn (T.isPrefixOf err1) "x:=with (s as s) s"

@@ -700,3 +709,24 @@ testInvalidTuples = TestCase $ do

700 expectTutorialDErr sessionId dbconn (T.isPrefixOf "AttributeNamesMismatchError") ":showexpr relation{tuple{a 1},tuple{b 2}}"

709 expectTutorialDErr sessionId dbconn (T.isPrefixOf "AttributeNamesMismatchError") ":showexpr relation{tuple{a 1},tuple{b 2}}"

701 expectTutorialDErr sessionId dbconn (T.isPrefixOf "AttributeNamesMismatchError") ":showexpr relation{tuple{a 1},tuple{a 2, b 3}}"

710 expectTutorialDErr sessionId dbconn (T.isPrefixOf "AttributeNamesMismatchError") ":showexpr relation{tuple{a 1},tuple{a 2, b 3}}"

702-- expectTutorialDErr sessionId dbconn (T.isPrefixOf "ParseErrorBundle") ":showexpr relation{tuple{a 2, a 3}}" --parse failure can't be validated with this function

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

4import System.Directory

5import Data.List (isSuffixOf)

6import System.Exit

7+import qualified Data.Text as T

8+import Text.URI

7

9

8testList :: IO Test

10testList :: IO Test

9testList = do

11testList = do

@@ -20,7 +22,8 @@ main = do

20

22

21testScript :: FilePath -> Test

23testScript :: FilePath -> Test

22testScript tutdFile = TestCase $ do

24testScript tutdFile = TestCase $ do

23− eImport <- importTutorialD tutdFile

25+ fileURI <- mkURI (T.pack ("file://" <> tutdFile))

26+ eImport <- importTutorialDFromFile fileURI Nothing

24 case eImport of

27 case eImport of

25 Left err -> assertFailure ("tutd import failure in " ++ tutdFile ++ ": " ++ show err)

28 Left err -> assertFailure ("tutd import failure in " ++ tutdFile ++ ": " ++ show err)

26− Right _ -> pure ()

29+ Right _ -> pure ()