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.github/workflows/haskell-ci.yml−256 .github/workflows/simple.yml−58 .gitignore+1−8 CHANGES+63 CHANGES.md−746 CONTRIBUTING.md−13 CONTRIBUTORS−36 README.md−4 bench/Select.hs−32 cabal.haskell-ci−5 cabal.project−4 cabal.project.local.win−4 postgresql-simple.cabal+68−158 sdist.sh−25 src/Database/PostgreSQL/Simple.hs+319−378 src/Database/PostgreSQL/Simple.hs-boot−23 src/Database/PostgreSQL/Simple/Arrays.hs−92 src/Database/PostgreSQL/Simple/BuiltinTypes.hs+403 src/Database/PostgreSQL/Simple/Compat.hs+8−24 src/Database/PostgreSQL/Simple/Copy.hs−269 src/Database/PostgreSQL/Simple/Cursor.hs−98 src/Database/PostgreSQL/Simple/Errors.hs−140 src/Database/PostgreSQL/Simple/FromField.hs+139−548 src/Database/PostgreSQL/Simple/FromField.hs-boot−11 src/Database/PostgreSQL/Simple/FromRow.hs+34−365 src/Database/PostgreSQL/Simple/FromRow.hs-boot−17 src/Database/PostgreSQL/Simple/HStore.hs−36 src/Database/PostgreSQL/Simple/HStore/Implementation.hs−210 src/Database/PostgreSQL/Simple/HStore/Internal.hs−19 src/Database/PostgreSQL/Simple/Internal.hs+74−401 src/Database/PostgreSQL/Simple/Internal/PQResultUtils.hs−123 src/Database/PostgreSQL/Simple/LargeObjects.hs+6−7 src/Database/PostgreSQL/Simple/Newtypes.hs−49 src/Database/PostgreSQL/Simple/Notification.hs+32−93 src/Database/PostgreSQL/Simple/Ok.hs+4−10 src/Database/PostgreSQL/Simple/Range.hs−317 src/Database/PostgreSQL/Simple/SqlQQ.hs+23−37 src/Database/PostgreSQL/Simple/Time.hs−246 src/Database/PostgreSQL/Simple/Time/Implementation.hs−176 src/Database/PostgreSQL/Simple/Time/Internal.hs−27 src/Database/PostgreSQL/Simple/Time/Internal/Parser.hs−204 src/Database/PostgreSQL/Simple/Time/Internal/Printer.hs−135 src/Database/PostgreSQL/Simple/ToField.hs+49−235 src/Database/PostgreSQL/Simple/ToField.hs-boot−30 src/Database/PostgreSQL/Simple/ToRow.hs+6−135 src/Database/PostgreSQL/Simple/ToRow.hs-boot−18 src/Database/PostgreSQL/Simple/Transaction.hs−264 src/Database/PostgreSQL/Simple/TypeInfo.hs−121 src/Database/PostgreSQL/Simple/TypeInfo/Macro.hs−53 src/Database/PostgreSQL/Simple/TypeInfo/Static.hs−1802 src/Database/PostgreSQL/Simple/TypeInfo/Types.hs−56 src/Database/PostgreSQL/Simple/Types.hs+35−161 src/Database/PostgreSQL/Simple/Vector.hs−45 src/Database/PostgreSQL/Simple/Vector/Unboxed.hs−44 test/Bytea.hs+26 test/Common.hs+2−11 test/Exception.hs−70 test/Inspection.hs−79 test/Interval.hs−176 test/Main.hs+24−637 test/Notify.hs+4−2 test/Serializable.hs−68 test/Time.hs−119 test/WRITING-TESTS+11−38 test/results/malformed-input.expected−4 test/results/unique-constraint-violation.expected−5 tools/GenBuiltinTypes.hs+185 tools/GenTypeInfo.hs−381 tools/StringsQQ.hs+1−12
.github/workflows/haskell-ci.ymldeleted−256
@@ -1,256 +0,0 @@
1−# This GitHub workflow config has been generated by a script via
2−#
3−# haskell-ci 'github' 'cabal.project'
4−#
5−# To regenerate the script (for example after adjusting tested-with) run
6−#
7−# haskell-ci regenerate
8−#
9−# For more information, see https://github.com/haskell-CI/haskell-ci
10−#
11−# version: 0.17.20231110
12−#
13−# REGENDATA ("0.17.20231110",["github","cabal.project"])
14−#
15−name: Haskell-CI
16−on:
17− push:
18− branches:
19− - master
20− pull_request:
21− branches:
22− - master
23−jobs:
24− linux:
25− name: Haskell-CI - Linux - ${{ matrix.compiler }}
26− runs-on: ubuntu-20.04
27− timeout-minutes:
28− 60
29− container:
30− image: buildpack-deps:bionic
31− services:
32− postgres:
33− image: postgres:14
34− env:
35− POSTGRES_PASSWORD: postgres
36− options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
37− continue-on-error: ${{ matrix.allow-failure }}
38− strategy:
39− matrix:
40− include:
41− - compiler: ghc-9.8.1
42− compilerKind: ghc
43− compilerVersion: 9.8.1
44− setup-method: ghcup
45− allow-failure: false
46− - compiler: ghc-9.6.3
47− compilerKind: ghc
48− compilerVersion: 9.6.3
49− setup-method: ghcup
50− allow-failure: false
51− - compiler: ghc-9.4.8
52− compilerKind: ghc
53− compilerVersion: 9.4.8
54− setup-method: ghcup
55− allow-failure: false
56− - compiler: ghc-9.2.8
57− compilerKind: ghc
58− compilerVersion: 9.2.8
59− setup-method: ghcup
60− allow-failure: false
61− - compiler: ghc-9.0.2
62− compilerKind: ghc
63− compilerVersion: 9.0.2
64− setup-method: ghcup
65− allow-failure: false
66− - compiler: ghc-8.10.7
67− compilerKind: ghc
68− compilerVersion: 8.10.7
69− setup-method: ghcup
70− allow-failure: false
71− - compiler: ghc-8.8.4
72− compilerKind: ghc
73− compilerVersion: 8.8.4
74− setup-method: hvr-ppa
75− allow-failure: false
76− - compiler: ghc-8.6.5
77− compilerKind: ghc
78− compilerVersion: 8.6.5
79− setup-method: hvr-ppa
80− allow-failure: false
81− fail-fast: false
82− steps:
83− - name: apt
84− run: |
85− apt-get update
86− apt-get install -y --no-install-recommends gnupg ca-certificates dirmngr curl git software-properties-common libtinfo5
87− if [ "${{ matrix.setup-method }}" = ghcup ]; then
88− mkdir -p "$HOME/.ghcup/bin"
89− curl -sL https://downloads.haskell.org/ghcup/0.1.20.0/x86_64-linux-ghcup-0.1.20.0 > "$HOME/.ghcup/bin/ghcup"
90− chmod a+x "$HOME/.ghcup/bin/ghcup"
91− "$HOME/.ghcup/bin/ghcup" install ghc "$HCVER" || (cat "$HOME"/.ghcup/logs/*.* && false)
92− "$HOME/.ghcup/bin/ghcup" install cabal 3.10.2.0 || (cat "$HOME"/.ghcup/logs/*.* && false)
93− else
94− apt-add-repository -y 'ppa:hvr/ghc'
95− apt-get update
96− apt-get install -y "$HCNAME"
97− mkdir -p "$HOME/.ghcup/bin"
98− curl -sL https://downloads.haskell.org/ghcup/0.1.20.0/x86_64-linux-ghcup-0.1.20.0 > "$HOME/.ghcup/bin/ghcup"
99− chmod a+x "$HOME/.ghcup/bin/ghcup"
100− "$HOME/.ghcup/bin/ghcup" install cabal 3.10.2.0 || (cat "$HOME"/.ghcup/logs/*.* && false)
101− fi
102− env:
103− HCKIND: ${{ matrix.compilerKind }}
104− HCNAME: ${{ matrix.compiler }}
105− HCVER: ${{ matrix.compilerVersion }}
106− - name: Set PATH and environment variables
107− run: |
108− echo "$HOME/.cabal/bin" >> $GITHUB_PATH
109− echo "LANG=C.UTF-8" >> "$GITHUB_ENV"
110− echo "CABAL_DIR=$HOME/.cabal" >> "$GITHUB_ENV"
111− echo "CABAL_CONFIG=$HOME/.cabal/config" >> "$GITHUB_ENV"
112− HCDIR=/opt/$HCKIND/$HCVER
113− if [ "${{ matrix.setup-method }}" = ghcup ]; then
114− HC=$("$HOME/.ghcup/bin/ghcup" whereis ghc "$HCVER")
115− HCPKG=$(echo "$HC" | sed 's#ghc$#ghc-pkg#')
116− HADDOCK=$(echo "$HC" | sed 's#ghc$#haddock#')
117− echo "HC=$HC" >> "$GITHUB_ENV"
118− echo "HCPKG=$HCPKG" >> "$GITHUB_ENV"
119− echo "HADDOCK=$HADDOCK" >> "$GITHUB_ENV"
120− echo "CABAL=$HOME/.ghcup/bin/cabal-3.10.2.0 -vnormal+nowrap" >> "$GITHUB_ENV"
121− else
122− HC=$HCDIR/bin/$HCKIND
123− echo "HC=$HC" >> "$GITHUB_ENV"
124− echo "HCPKG=$HCDIR/bin/$HCKIND-pkg" >> "$GITHUB_ENV"
125− echo "HADDOCK=$HCDIR/bin/haddock" >> "$GITHUB_ENV"
126− echo "CABAL=$HOME/.ghcup/bin/cabal-3.10.2.0 -vnormal+nowrap" >> "$GITHUB_ENV"
127− fi
128−
129− HCNUMVER=$(${HC} --numeric-version|perl -ne '/^(\d+)\.(\d+)\.(\d+)(\.(\d+))?$/; print(10000 * $1 + 100 * $2 + ($3 == 0 ? $5 != 1 : $3))')
130− echo "HCNUMVER=$HCNUMVER" >> "$GITHUB_ENV"
131− echo "ARG_TESTS=--enable-tests" >> "$GITHUB_ENV"
132− echo "ARG_BENCH=--enable-benchmarks" >> "$GITHUB_ENV"
133− echo "HEADHACKAGE=false" >> "$GITHUB_ENV"
134− echo "ARG_COMPILER=--$HCKIND --with-compiler=$HC" >> "$GITHUB_ENV"
135− echo "GHCJSARITH=0" >> "$GITHUB_ENV"
136− env:
137− HCKIND: ${{ matrix.compilerKind }}
138− HCNAME: ${{ matrix.compiler }}
139− HCVER: ${{ matrix.compilerVersion }}
140− - name: env
141− run: |
142− env
143− - name: write cabal config
144− run: |
145− mkdir -p $CABAL_DIR
146− cat >> $CABAL_CONFIG <<EOF
147− remote-build-reporting: anonymous
148− write-ghc-environment-files: never
149− remote-repo-cache: $CABAL_DIR/packages
150− logs-dir: $CABAL_DIR/logs
151− world-file: $CABAL_DIR/world
152− extra-prog-path: $CABAL_DIR/bin
153− symlink-bindir: $CABAL_DIR/bin
154− installdir: $CABAL_DIR/bin
155− build-summary: $CABAL_DIR/logs/build.log
156− store-dir: $CABAL_DIR/store
157− install-dirs user
158− prefix: $CABAL_DIR
159− repository hackage.haskell.org
160− url: http://hackage.haskell.org/
161− EOF
162− cat >> $CABAL_CONFIG <<EOF
163− program-default-options
164− ghc-options: $GHCJOBS +RTS -M3G -RTS
165− EOF
166− cat $CABAL_CONFIG
167− - name: versions
168− run: |
169− $HC --version || true
170− $HC --print-project-git-commit-id || true
171− $CABAL --version || true
172− - name: update cabal index
173− run: |
174− $CABAL v2-update -v
175− - name: install cabal-plan
176− run: |
177− mkdir -p $HOME/.cabal/bin
178− curl -sL https://github.com/haskell-hvr/cabal-plan/releases/download/v0.7.3.0/cabal-plan-0.7.3.0-x86_64-linux.xz > cabal-plan.xz
179− echo 'f62ccb2971567a5f638f2005ad3173dba14693a45154c1508645c52289714cb2 cabal-plan.xz' | sha256sum -c -
180− xz -d < cabal-plan.xz > $HOME/.cabal/bin/cabal-plan
181− rm -f cabal-plan.xz
182− chmod a+x $HOME/.cabal/bin/cabal-plan
183− cabal-plan --version
184− - name: checkout
185− uses: actions/checkout@v3
186− with:
187− path: source
188− - name: initial cabal.project for sdist
189− run: |
190− touch cabal.project
191− echo "packages: $GITHUB_WORKSPACE/source/." >> cabal.project
192− cat cabal.project
193− - name: sdist
194− run: |
195− mkdir -p sdist
196− $CABAL sdist all --output-dir $GITHUB_WORKSPACE/sdist
197− - name: unpack
198− run: |
199− mkdir -p unpacked
200− find sdist -maxdepth 1 -type f -name '*.tar.gz' -exec tar -C $GITHUB_WORKSPACE/unpacked -xzvf {} \;
201− - name: generate cabal.project
202− run: |
203− PKGDIR_postgresql_simple="$(find "$GITHUB_WORKSPACE/unpacked" -maxdepth 1 -type d -regex '.*/postgresql-simple-[0-9.]*')"
204− echo "PKGDIR_postgresql_simple=${PKGDIR_postgresql_simple}" >> "$GITHUB_ENV"
205− rm -f cabal.project cabal.project.local
206− touch cabal.project
207− touch cabal.project.local
208− echo "packages: ${PKGDIR_postgresql_simple}" >> cabal.project
209− echo "package postgresql-simple" >> cabal.project
210− echo " ghc-options: -Werror=missing-methods" >> cabal.project
211− cat >> cabal.project <<EOF
212− allow-newer: cryptohash-md5-0.11.100.1:base
213− EOF
214− $HCPKG list --simple-output --names-only | perl -ne 'for (split /\s+/) { print "constraints: $_ installed\n" unless /^(postgresql-simple)$/; }' >> cabal.project.local
215− cat cabal.project
216− cat cabal.project.local
217− - name: dump install plan
218− run: |
219− $CABAL v2-build $ARG_COMPILER $ARG_TESTS $ARG_BENCH --dry-run all
220− cabal-plan
221− - name: restore cache
222− uses: actions/cache/restore@v3
223− with:
224− key: ${{ runner.os }}-${{ matrix.compiler }}-${{ github.sha }}
225− path: ~/.cabal/store
226− restore-keys: ${{ runner.os }}-${{ matrix.compiler }}-
227− - name: install dependencies
228− run: |
229− $CABAL v2-build $ARG_COMPILER --disable-tests --disable-benchmarks --dependencies-only -j2 all
230− $CABAL v2-build $ARG_COMPILER $ARG_TESTS $ARG_BENCH --dependencies-only -j2 all
231− - name: build w/o tests
232− run: |
233− $CABAL v2-build $ARG_COMPILER --disable-tests --disable-benchmarks all
234− - name: build
235− run: |
236− $CABAL v2-build $ARG_COMPILER $ARG_TESTS $ARG_BENCH all --write-ghc-environment-files=always
237− - name: tests
238− run: |
239− $CABAL v2-test $ARG_COMPILER $ARG_TESTS $ARG_BENCH all --test-show-details=direct
240− - name: cabal check
241− run: |
242− cd ${PKGDIR_postgresql_simple} || false
243− ${CABAL} -vnormal check
244− - name: haddock
245− run: |
246− $CABAL v2-haddock --disable-documentation --haddock-all $ARG_COMPILER --with-haddock $HADDOCK $ARG_TESTS $ARG_BENCH all
247− - name: unconstrained build
248− run: |
249− rm -f cabal.project.local
250− $CABAL v2-build $ARG_COMPILER --disable-tests --disable-benchmarks all
251− - name: save cache
252− uses: actions/cache/save@v3
253− if: always()
254− with:
255− key: ${{ runner.os }}-${{ matrix.compiler }}-${{ github.sha }}
256− path: ~/.cabal/store
.github/workflows/simple.ymldeleted−58
@@ -1,58 +0,0 @@
1−name: Simple
2−on:
3− push:
4− branches:
5− - master
6− pull_request:
7− branches:
8− - master
9−
10−jobs:
11− native:
12− name: "Simple: GHC ${{ matrix.ghc }} on ${{ matrix.os }}"
13− runs-on: ${{ matrix.os }}
14− strategy:
15− matrix:
16− os: [macos-latest, windows-latest]
17− ghc: ['8.10','9.0','9.2','9.4.8','9.6.3','9.8.1']
18− fail-fast: false
19− timeout-minutes:
20− 60
21− steps:
22− - name: Set git to use LF
23− run: |
24− git config --global core.autocrlf false
25− git config --global core.eol lf
26−
27− - name: Set up Haskell
28− id: setup-haskell
29− uses: haskell/actions/setup@v2
30− with:
31− ghc-version: ${{ matrix.ghc }}
32− cabal-version: '3.10.2.0'
33−
34− - name: Set up PostgreSQL
35− uses: ikalnytskyi/action-setup-postgres@v3
36− id: postgres
37− with:
38− username: ci
39− password: sw0rdfish
40− database: test
41−
42− - name: Checkout
43− uses: actions/checkout@v3.0.2
44−
45− - name: Cache
46− uses: actions/cache@v2.1.3
47− with:
48− path: ${{ steps.setup-haskell.outputs.cabal-store }}
49− key: ${{ runner.os }}-${{ matrix.ghc }}-${{ github.sha }}
50− restore-keys: ${{ runner.os }}-${{ matrix.ghc }}-
51−
52− - name: Build
53− run: cabal build all --enable-tests
54−
55− - name: Test
56− run: cabal test all --enable-tests --test-show-details=direct
57− env:
58− DATABASE_CONNSTRING: ${{ steps.postgres.outputs.connection-uri }}
.gitignore+1−8
@@ -7,11 +7,4 @@ dist/
77*.o
88\#*\#
99.#*
10−/CHANGELOG.md
11−.cabal-sandbox/
12−.stack-work/
13−cabal.sandbox.config
14−/dist-newstyle
15−.ghc.environment.*
16−cabal.project.local
17−dump-core
10+postgresql-simple-*.tar.gz
CHANGESnew file+63
@@ -0,0 +1,63 @@
1+Version 0.1.2: (2012-05-09)
2+ * Switched to libpq-based escaping for bytea types; Binary now works with
3+ PostgreSQL 8 courtesy of Joey Adams.
4+
5+ * postgresql-simple now sets standard_conforming_strings to "on". This
6+ per-connection variable is initialized according to the server
7+ configuration, which defaults to "off" for PostgreSQL < 9, and "on"
8+ for PostgreSQL >= 9. You may need to adjust any string literals in
9+ your SQL queries, or set the variable yourself.
10+
11+ * Exported (:.) from Database.PostgreSQL.Simple
12+
13+Version 0.1.1: (2012-05-06)
14+ * Added some preliminary documentation for the Ok, Notification, and
15+ LargeObjects modules
16+
17+ * Implemented the `fail` method for the monad instance for `Ok`.
18+
19+ * Fixed a bug relating to handling the transaction level
20+
21+
22+Version 0.1: (2012-05-04)
23+ * Renamed several modules, typeclasses, and functions:
24+
25+ QueryParams (renderParams) -> ToRow (toRow)
26+ QueryResults (convertResults) -> FromRow (fromRow)
27+ Param (render) -> ToField (toField)
28+ Result (convert) -> FromField (fromField)
29+
30+ * Added the `Database.PostgreSQL.Simple.Ok` module, a variation of
31+ `Either SomeException` that has an instance for `Alternative` and also
32+ uses a list of exceptions to track the ways it has failed.
33+
34+ * Changed the return type of `fromField` and `fromRow` from
35+ `Either SomeException` to `Ok`.
36+
37+ * Thanks to suggestions from Ozgun Ataman, the `FromRow` typeclass has been
38+ massively improved. The result is simpler definitions and better
39+ compositionality. Also, user-defined instances need not be to be
40+ concerned about forcing the converted results to WHNF. Here is an
41+ example comparing the old to the new:
42+
43+ instance (Result a, Result b) => QueryResults (a,b) where
44+ convertResults [fa,fb] [va,vb] = do
45+ !a <- convert fa va
46+ !b <- convert fb vb
47+ return (a,b)
48+ convertResults fs vs = convertError fs vs 2
49+
50+ instance (FromField a, FromField b) => FromRow (a,b) where
51+ fromRow = (,) <$> field <*> field
52+
53+ * Added `(:.)`, a pair that allows one to compose `FromRow` instances:
54+
55+ instance (FromRow a, FromRow b) => FromRow (a :. b) where
56+ fromRow = (:.) <$> fromRow <*> fromRow
57+
58+ * Moved the contents `Field` module into the `FromField` module.
59+
60+ * Removed the `RawResult` type.
61+
62+ * Added `DefaultIsolationLevel` as a distinct `IsolationLevel` option
63+ and `DefaultReadWriteMode` as a distinct `ReadWriteMode`.
CHANGES.mddeleted−746
@@ -1,746 +0,0 @@
1−### Version 0.7.0.0 (2023-07-31)
2−
3− * Remove Eq Null instance. (Future `base` may break it, we remove it profilacticly).
4− * Use `postgresql-libpq >=0.10.0.0`. It includes critical fixes,
5− by using `postgresql-simple >=0.7` you won't get older `postgresql-libpq`.
6− * Drop support for GHC prior 8.6
7− * Added a class for `postgresql-simple` exceptions: `SomePostgreSqlException`.
8− This allows to catch all `postgresql-simple` exceptions at once.
9− (c.f. `AsyncException` in `base).
10−
11−### Version 0.6.5.1 (2023-07-09)
12−
13− * Support `aeson-2.2.0.0`
14−
15−### Version 0.6.5 (2022-10-30)
16−
17− * Add `withConnect`
18−
19−### Version 0.6.4 (2021-01-06)
20−
21− * Add foldCopyData helper function
22− Thanks to Sebastián Estrella for the implementation
23− https://github.com/haskellari/postgresql-simple/pull/56
24− * Implement support for postgresql 'interval' type
25− Thanks to Andre Marques Lee for the implementation
26− https://github.com/haskellari/postgresql-simple/pull/60
27− * Depend on `time-compat` to provide uniform `time` related interface.
28−
29−### Version 0.6.3 (2020-11-15)
30−
31− * Add `fromFieldJSONByteString`
32− Thanks to tomjaguarpaw for the implementation
33− https://github.com/haskellari/postgresql-simple/pull/47
34− * Add `attoFieldParser`
35− Thanks to Victor Nawothnig for the implementation
36− https://github.com/haskellari/postgresql-simple/pull/45
37− * Add `Identity` and `Const` instance
38− Thanks to Cary Robbins for the implementation
39− https://github.com/haskellari/postgresql-simple/pull/46
40− * Add `withTransactionModeRetry'`, a variant of `withTransactionModeRetry`
41− for all exception types.
42− Thanks to Elliot Cameron for the implementation
43− https://github.com/haskellari/postgresql-simple/pull/42
44− * Fix spurious aborts when retrying transactions
45− Thanks to Elliot Cameron for the implementation
46− https://github.com/haskellari/postgresql-simple/pull/34
47− * Add `Database.PostgreSQL.Simple.Newtypes` module
48− with `Aeson` newtype.
49− https://github.com/haskellari/postgresql-simple/pull/55
50−
51−### Version 0.6.2 (2019-04-26)
52−
53− * Define `MonadFail Ok`.
54−
55−### Version 0.6.1 (2019-03-04)
56−
57− * Escape double '??' to a literal '?
58− Thanks to Felix Paulusma for the implementation.
59− https://github.com/phadej/postgresql-simple/pull/5
60−
61− * Mention GHC Generics support in the documentation.
62− Thanks to Gabriel Gonzalez for the implementation.
63− https://github.com/phadej/postgresql-simple/pull/6
64−
65− * Better error message for "Query resulted in a command response
66− Thanks to Max Amanshauser for the implementation.
67− https://github.com/phadej/postgresql-simple/pull/7
68−
69− * fromJSONField: Include JSONPath on JSON parse errors
70− Thanks to Simon Hengel for the implementation.
71− https://github.com/phadej/postgresql-simple/pull/2
72−
73− * No TH in implementation
74− https://github.com/phadej/postgresql-simple/pull/4
75−
76−### Version 0.6 (2018-10-16)
77−
78− * *Breaking change*: Use `Only` package's `Only` for a common 1-tuple.
79−
80− Consider a downstream library depending already both on
81− `Only` and `postgresql-simple` package. This library my define
82− a `MyClass` with instances for `Only.Only` and `PostgreSQL.Only`.
83− As now these types are the same, a library would break.
84− Therefore I consider "merging" types a breaking change.
85−
86− There are two ways for adopting this change in that scenario:
87−
88− - Either CPP-guard `PostgreSQL.Only` instance with
89−
90− ```haskell
91− #if !MIN_VERSION_postgresql_simple(0,6,0)
92− instance MyClass (PostgreSQL.Only a) where ...
93− #endif
94− ```
95−
96− - or simply remove it and add `postgresql-simple >=0.6` lower bound,
97− making sure that there's only single `Only`.
98−
99− * Add `ToField` instances for case-insensitive strict and lazy text.
100− Thanks to Max Tagher for the implementation.
101− https://github.com/lpsmith/postgresql-simple/pull/232
102−
103− * Add support to CockroachDB.
104− Thanks to Georte Steel.
105− https://github.com/lpsmith/postgresql-simple/pull/245
106−
107− * Add Generic ConnectInfo instance
108− Thanks to Dmitry Dzhus.
109− https://github.com/lpsmith/postgresql-simple/pull/235
110−
111− * Add `fromFieldRange :: Typeable a => FieldParser a -> FieldParser (PGRange a)`
112− https://github.com/lpsmith/postgresql-simple/pull/221
113−
114− * Add `fromFieldJSONByteString :: FieldParser ByteString`
115− https://github.com/lpsmith/postgresql-simple/pull/222/files
116−
117− * Fix off-by-one error in year builder.
118− Thanks to Nathan Ferris Hunter.
119− https://github.com/lpsmith/postgresql-simple/pull/230
120−
121− * Extend ToRow and FromRow to tuples of size 18
122− Thanks to Bardur Arantsson.
123− https://github.com/lpsmith/postgresql-simple/pull/229
124−
125− * Add `Vector` and `Vector.Unboxed` `query` variants.
126− These are more memory efficient
127− (especially, if you anyway will convert to some vector)
128− https://github.com/phadej/1
129−
130− * Documentation improvements
131− https://github.com/lpsmith/postgresql-simple/pull/227
132− https://github.com/lpsmith/postgresql-simple/pull/236
133−
134−### Version 0.5.4.0 (2018-05-23)
135− * Support GHC-8.4 (Semigroup/Monoid)
136−
137−### Version 0.5.3.0 (2017-05-15)
138− * Refactored some rudimentary cursor handling code out of the
139− implementation of the fold operators, into a new
140− `Database.PostgreSQL.Simple.Cursor` module, thanks to Bardur Arantsson.
141−
142− * Made the `FromField` instance for `Char` compatible with
143− postgresql's `bpchar` type. Thanks to Ivan Lazar Miljenovic for
144− reporting the issue.
145−
146− * Added `Show` and `Eq` instances for `Notification`, thanks to
147− Matvey Aksenov.
148−
149− * Fixed some example code, thanks to Matvey Aksenov.
150−
151− * Fixed a problem with using `conversionError` to throw exceptions
152− of type `SomeException`. Previously, the exception would be
153− wrapped in a second `SomeException` dynamic constructor which
154− would cause normal GHC typecase idioms over `SomeException` to fail.
155−
156−### Version 0.5.2.1 (2016-06-29)
157− * Bumped the lower bound for `base` to 4.6. Thanks to Herbert
158− Valerio Riedel for reporting the issue.
159−
160− * Added an `Eq` instance for `SqlError`, thanks to Chris Allen
161−
162− * Fixed a bug where a all-caps `"NULL"` text value inside a
163− postgresql array would get parsed as the SQL null value. Thanks
164− goes to Edgar Gomes and Silk for finding and fixing this mistake.
165−
166− * Modified `withTransaction` and friends to ignore `IOError`s when
167− attempting to roll back the transaction. This fixes a buggy
168− interaction between `withTransaction` and async exceptions (e.g.
169− `System.Timeout`) on unix platforms. Thanks goes to Erik
170− Hesselink and Silk for providing the test case that exposed this
171− issue.
172−
173− * Added the `testTimeout` regression test for the problem above.
174−
175−### Version 0.5.2.0 (2016-05-25)
176− * Significantly improved the error reporting from
177− `Copy.putCopyData`, thanks to Ben Gamari.
178−
179− * Moved the test suite to use `tasty`, with a big thanks
180− to Ben Gamari.
181−
182− * Added `FromField.optionalField`, and updated the documentation
183− of `FromField.fromJSONField`, as inspired by an email conversation
184− with Ian Wagner.
185−
186− * Updated all links in the haddocks to use https, and added a link
187− to the documentation of `connectPostgreSQL`.
188−
189− * Added a truncated changelog to the source distribution.
190−
191−### Version 0.5.1.3 (2016-04-30)
192− * Implemented the Monad of No Return proposal, future-proofing
193− postgresql-simple against future releases of GHC.
194−
195− * Fixed a rare and usually benign race condition where
196− `getNotification` could end up waiting on a newly reallocated
197− file descriptor index, potentially leading to deadlock if the
198− descriptor does not become readable promptly. This fix only
199− applies to GHC 7.8 or later, as it depends on `threadWaitReadSTM`.
200−
201− * Tweaked the time parsers to accept times of day of the form `hh:mm`,
202− omitting seconds, following changes made to aeson.
203−
204− * Updated the documentation of the `In` type to point out a gotcha
205− when using the SQL fragment `... NOT IN ?` with `In []`. Thanks
206− goes to Simon Michael and Dan Haraj for bringing this issue to
207− my attention.
208−
209−### Version 0.5.1.2 (2015-12-14)
210− * The syntax generated for empty arrays was changed so that
211− postgresql's type inference would work better, thanks to
212− Amit Levy.
213−
214− * Further revision and expansion of the new Time documentation.
215−
216−### Version 0.5.1.1 (2015-12-02)
217− * This is a documentation-only release
218−
219− * The documentation of the `Time` module has been completely
220− rewritten, and is far longer and more informative. It contains
221− a brief overview of civil time, the semantics of postgresql's
222− time types, and their relation to Haskell's time types via
223− postgresql-simple.
224−
225− * The documentation of `connectPostgreSQL` has been modified to
226− mention the effects of environment variables on the connection
227− string parameters.
228−
229− * The documentation of `HStore.Internal` has been unhidden from
230− haddock.
231−
232− * A typo in example code was fixed courtesy of Levi Notik.
233−
234−### Version 0.5.1.0 (2015-10-22)
235− * Optimized the implementation of the streaming operators to avoid
236− creating intermediate lists of rows, thanks to Timo von Holtz.
237−
238− * Added default instances for `ToRow` and `FromRow` that depend on
239− Generics, thanks to Alexey Khudyakov.
240−
241− * Fixed support for bytestring-0.9 and GHC 7.4.
242−
243−### Version 0.5.0.1 (2015-09-21)
244− * Fixed a bug when printing a `ZonedTime` with a negative offset
245− that is not a whole number of hours.
246−
247−### Version 0.5.0.0 (2015-09-19)
248− * Removed the deprecated `BuiltinTypes` module.
249−
250− * Modified the SQL quasiquoter so that it returns a `Query`, not
251− an overloaded string, and so that the `OverloadedStrings` language
252− extension is no longer necessary, thanks to Mike Ledger.
253−
254− * Moved away from `blaze-builder` in favor of `bytestring-builder`. This
255− shouldn't affect very many people, but does reduce the transitive
256− dependencies.
257−
258− * Rewrote the timestamp printers to use the new `Prim`
259− infrastructure in `bytestring-builder`. The new printers should
260− be a fair bit faster.
261−
262− * Added support for exclusion violations to the `ConstraintViolation`
263− type in the Errors module, thanks to João Cristóvão.
264−
265− * Moved away from the `uuid` package in favor of the `uuid-types` package,
266− thanks to Bardur Arantsson. This shouldn't affect anybody, but does
267− reduce the transitive dependencies.
268−
269− * Postgresql-simple now explicitly assumes the UTF8 character encoding
270− for communication between the client and server. All database encodings
271− support UTF8 except for Mule Internal Code, the Multilingual
272− Extensions for Emacs. An exception should be raised upon
273− connecting to a database by the backend if the backend cannot
274− accommodate this requirement.
275−
276− * Added `Eq` and `Typeable` instances for `Connection`.
277−
278− * Added the `foldWith`, `forEachWith`, and `returningWith` families
279− of functions courtesy of Travis Staton.
280−
281− * Support for Ranged types, with thanks to Leonid Onokhov for his
282− contributions.
283−
284− * The `FromField` instance for JSON now allows for top-level values that
285− are not objects or arrays, thanks to Sam Rijs.
286−
287− * The timestamp parsers have been replaced with those now in Aeson.
288− Janne Hellsten adapted the old parsers from postgresql-simple for
289− inclusion in Aeson; Bryan O'Sullivan rewrote those parsers to be
290− faster, with some tweaks contributed by myself. And now to
291− bring the effort full circle, the result has been brought back to
292− postgresql-simple, with some adaptations.
293−
294− * Fixed a bug in the typeinfo system where postgresql's `_record` type
295− was being reported as a basic type and not an array type. Thanks to
296− Nickolay Kolev for helping to expose this issue.
297−
298− * Fixed a bug with the `typeInfo` operator, thanks to Timmy Tofu. In the
299− case of parsing subfields of arrays and composites, it would fetch the
300− `TypeInfo` of the array or composite type and not the subtype.
301−
302−### Version 0.4.10.0 (2015-02-26)
303− * Added a blurb about SSL/TLS in the documentation for connectPostgreSQL
304−
305− * Moved some functions into the Internal module, courtesy of Aleksey
306− Uimanov.
307−
308−### Version 0.4.9.0 (2014-12-27)
309− * Made the fromField method for PGArray available as pgArrayFieldParser,
310− outside of the typeclass courtesy of Tom Ellis.
311−
312− * Fixed a missing OverloadedStrings pragma in the documentation of SqlQQ.
313−
314− * Fixed deprecation warnings, courtesy of Simon Hengel.
315−
316−### Version 0.4.8.0 (2014-11-24)
317− * Added support for postgresql's citext type extension via the
318− case-insensitive package.
319−
320− * Added the function parseHStoreList to the HStore module.
321−
322−### Version 0.4.7.0 (2014-10-27)
323− * Added support for very old timestamps to UTCTime. Depending on time
324− zone, very old timestamps can be returned with a offset from UTC that
325− contains seconds.
326−
327− All timezones in the TZ database moved to a time standard offset an
328− integer number of minutes from UTC before 1973, almost all locations
329− moved before 1938, and a solid majority moved before 1921.
330−
331− ZonedTime assumes offsets are a whole number of minutes, and thus the
332− conversion to ZonedTime does not support these timestamps and will
333− still throw a conversion error.
334−
335− Note that PostgreSQL's "timestamp with time zone" (or "timestamptz")
336− type is nearly universally misunderstood. For an explanation, see:
337−
338− https://github.com/lpsmith/postgresql-simple/issues/69
339−
340− Thanks to Michael Snoyman for his assistance with this issue.
341−
342−### Version 0.4.6.0 (2014-10-07)
343− * Added an instance ToField NominalDiffTime.
344−
345−### Version 0.4.5.0 (2014-09-26)
346− * Added support for retrieving NaN and ±Infinity floating point values
347− from postgres to the FromField instances for Float, Double, and Rational.
348− The instance for Scientific is unchanged due to the fact it has no
349− way of representing these special values. Thanks goes to Tom Nielsen
350− for reporting the issue.
351−
352−### Version 0.4.4.1 (2014-09-07)
353− * Fixed a rather serious bug that prevented the COPY module from working
354− at all on unix clients since version 0.4.3.0. Thanks goes to
355− Dmitry Dzhus for reporting the issue.
356−
357− * Added a regression test for the COPY module to the test suite.
358−
359−### Version 0.4.4.0 (2014-08-26)
360− * Added the jsonb type debuting in PostgreSQL 9.4 to the TypeInfo.Static
361− and Builtin tables, and extended the out-of-box json instances to
362− be compatible with the new type. Thanks to Tobias Florek for the
363− patch.
364−
365− * Ported some expanded documentation from mysql-simple, and fixed
366− a documentation typo.
367−
368−### Version 0.4.3.0 (2014-07-10)
369− * connect and exec now use libpq asynchronously on non-Windows platforms.
370− This means we are using threadWaitRead and threadWaitWrite to
371− have GHC's IO manager schedule non-blocking C calls to libpq,
372− instead of using blocking C calls and having the OS kernel do the
373− scheduling. Among other things, this now means that System.Timeout
374− will work with connect and exec on unix platforms.
375−
376− * connect and exec now throw IOErrors instead of SQLErrors in
377− some cases. The intention is for SQLErrors to represent
378− an error returned by the server, and to use IOErrors for errors
379− that originate from client-side code. However, this goal
380− isn't perfectly achieved as of yet.
381−
382−### Version 0.4.2.3 (2014-06-04)
383− * This is strictly a documentation release, with no code changes.
384−
385− * Fixed several documentation typos, thanks to Chris Allen and remdezx.
386−
387− * Expanded the documentation of connectPostgreSQL, including a short
388− overview of common use cases and two new links to the official Postgres
389− documentation about the authentication process.
390−
391− * De-emphasized connect and ConnectInfo in favor of connectPostgreSQL.
392−
393−### Version 0.4.2.2 (2014-05-15)
394− * Fixed compatibility with scientific-0.3.\*, thanks to Adam Bergmark
395−
396− * Improved documentation of the FromField module, as well as the fold,
397− foldWithOptions, executeMany, and returning operators.
398−
399−### Version 0.4.2.1 (2014-03-27)
400− * Fixed bug in Values syntax generation
401−
402− * Improved documentation, including examples of multi-row update,
403− a better example for Values, documenting the inaccuracies in reading
404− floating point numbers from the database, and the IsString instance
405− for QualifiedIdentifier.
406−
407−### Version 0.4.2.0 (2014-03-22)
408− * Added ToField and FromField instances for the scientific package
409−
410− * Changed the Identifier and QualifiedIdentifier to use Text in
411− order to avoid encoding errors. Technically this requires a
412− major version bump, but let's pretend 0.4.1.0 didn't happen.
413−
414− * Removed non-exhaustive cases in the ToField instance for Values,
415− and tweaked error messages.
416−
417−### Version 0.4.1.0 (2014-03-22)
418− * Fixed the parsing of arrays containing null values, courtesy of
419− Francesco Mazzoli
420−
421− * Added support for properly escaped identifiers, courtesy of
422− Tobias Florek. See the new Identifier and QualifiedIdentifier
423− types inside Database.PostgreSQL.Simple.Types.
424−
425− * Added support for parameterized VALUES expressions. This is
426− more general than executeMany and returning. See the
427− Database.PostgreSQL.Simple.Types.Values data type.
428−
429−### Version 0.4.0.2 (2014-01-12)
430− * Tweaked C preprocessor directive to be more portable
431−
432− * Tweaked testsuite for compatibility with aeson-0.7
433−
434−### Version 0.4.0.1 (2013-12-21)
435− * Relaxed dependency on aeson to >= 0.6
436−
437− * Update the documentation of `fromField`
438−
439−### Version 0.4.0.0 (2013-12-21)
440− * Changed the calling code of `fromField` so that it always sends
441− a copy of the raw data. This should be a small but significant
442− performance bump for most people most of the time; however it
443− may slow down retrieval of large values not converted directly
444− to ByteString, such as large json, hstore, and array values.
445− See commit 8635f8 for more information.
446−
447− * Added the PGArray type. Thanks to Joey Adams for the suggestion
448−
449− * Fixed JSON decoding, which was almost entirely broken up until now,
450− due to bugs in the version of aeson currently available on Hackage.
451− Thanks to Amit Levy for the report.
452−
453− * Added FromField instances for IORef, MVar, and IOVector.
454−
455−### Version 0.3.10.0 (2013-12-17)
456− * Added the queryWith function, courtesy of Leonid Onokhov
457−
458− * Added the Default type, for representing postgresql's default values
459−
460−### Version 0.3.9.1 (2013-10-28)
461− * Removed dependency on hashable
462−
463−### Version 0.3.9.0 (2013-10-27)
464− * Added FromField and ToField instances for the `uuid` package,
465− courtesy of Bas van Dijk.
466−
467− * Added instance FromRow (Maybe a) for most pre-packaged FromRow
468− instances. See issue #64 for some discussion.
469−
470− * Added the fromBinary, fromHStoreMap, and fromHStoreList newtype
471− unwrapper functions, courtesy of Bas van Dijk.
472−
473−### Version 0.3.8.0 (2013-10-11)
474− * Fixed the example code in `FromField`, thanks to Adam Bergmark.
475−
476− * Added `Notification.getBackendPID`.
477−
478−### Version 0.3.7.1 (2013-09-12)
479− * Relaxed the dependency on bytestring-0.10 back to bytestring-0.9,
480− courtesy of Michael Snoyman
481−
482−### Version 0.3.7.0 (2013-09-11)
483− * Added `aeson` as a dependency.
484−
485− * Added ToField and FromField instances for aeson's JSON.Value type,
486− courtesy of Bas van Dijk.
487−
488− * Added toJSONField and fromJSONField helper functions for declaring
489− FromField/ToField JSON instances to other Haskell types, courtesy
490− of Bas van Dijk.
491−
492− * Added a FromField instance for (), corresponding to postgresql's void
493− type.
494−
495− * Added liftConversion and liftRowParser functions to the Internal
496− module, for lifting IO actions into the respective monads.
497−
498− * The SqlError predicates available in the Transaction module are now
499− also exported from the Errors module.
500−
501− * Various documentation fixes.
502−
503−### Version 0.3.6.0 (2013-08-19)
504− * Added the json type to BuiltinTypes and TypeInfo.Static, courtesy of
505− Manuel Gómez.
506−
507− * Removed the remaining internal dependencies on BuiltinTypes from
508− FromField. Added the TypeInfo.Macro module as a result.
509−
510− * Deprecated the BuiltinTypes module, which will be removed several
511− months from now. Fixed the example code in FromField to reflect
512− this change.
513−
514−### Version 0.3.5.0 (2013-08-09)
515− * Added an FromRow instance for Vector, semantically identical to the
516− existing FromRow instance for [], courtesy of Doug Beardsley
517−
518− * Reworked the documentation for the Copy module, and tweaked the
519− documentation for the LargeObjects module.
520−
521−### Version 0.3.4.0 (2013-07-23)
522− * Added direct support for COPY IN and COPY OUT, without having
523− to use raw postgresql-libpq calls and postgresql-simple's Internal
524− module.
525−
526− * Changed `getNotification` so that it throws a IOError (resource vanished)
527− exception instead of an ErrorCall exception when it fails to fetch
528− the connection's file descriptor from libpq.
529−
530−### Version 0.3.3.2 (2013-06-18)
531− * Optimized the definition of `mconcat` in the Monoid instance for
532− the Query type, courtesy of Joey Adams.
533−
534−### Version 0.3.3.1 (2013-06-06)
535− * `getNotification` now works on Windows, albeit using a one-second
536− polling loop, courtesy of Joey Adams.
537−
538−### Version 0.3.3.0 (2013-05-29)
539− * Fixed two issues with the fold operator: fold would raise the wrong
540− exception, and gave the database cursor a static name preventing
541− folds from being nested. Thanks to Joey Adams for his
542− work on these issues.
543−
544−### Version 0.3.2.0 (2013-05-20)
545− * Added a savepoint abstraction to the Transaction module, courtesy
546− of Joey Adams
547−
548−### Version 0.3.1.2 (2013-04-29)
549− * Fixed hstore parser to not unnecessarily reverse the key-value pairs
550−
551−### Version 0.3.1.1 (2013-04-29)
552− * Fixed hstore parser to recognize empty hstores, courtesy of Simon
553− Meier
554−
555−### Version 0.3.1.0 (2013-04-26)
556− * Added support for Range and Composite types to the TypeInfo system.
557−
558− * Added support for hstore types in the Simple.HStore module.
559−
560− * Improved documentation of the FromField module.
561−
562−### Version 0.3.0.1 (2013-03-26)
563− * A large chunk of the documentation inside the FromField module had
564− silently failed to render in Haddock.
565−
566−### Version 0.3.0.0 (2013-03-25)
567− * Added support for PostgreSQL's Array Types. Thanks to Jason Dusek
568− for his work on this feature.
569−
570− * Added a brand new TypeInfo system that gives FromField instances
571− convenient and efficient access to the pg_type metatable. This
572− replaced the older typename cache, and was necessary to properly
573− support postgres array types. Thanks to Bas van Dijk for his
574− work on this feature.
575−
576− * Changed the type of the `fromField` and `fromRow` methods to allow
577− a restricted set of IO actions, and stopped pre-calculating the type
578− name of every column. As a result, the type of the `typename`
579− operator changed from `Field -> ByteString` to
580− `Field -> Conversion ByteString`, where Conversion is the new monad
581− that conversion computations run inside.
582−
583− * Improved the documentation of the FromField module.
584−
585− * Added the Database.PostgreSQL.Simple.Errors module, which offers
586− some predicates and functions for interpreting SqlError values, courtesy
587− of Leonid Onokhov.
588−
589− * Added a the name of a column and the associated table's object identifier
590− to ResultError exceptions, courtesy of Jeff Chu.
591−
592− * Moved most of the more detailed transaction operators into the
593− Database.PostgreSQL.Simple.Transaction module.
594−
595− * Changed withTransactionModeRetry to accept a predicate of which
596− SqlErrors to retry, due to the fact that serialization errors can
597− sometimes manifest themselves as constraint violations. Thanks
598− to Oliver Charles for pointing this out and implementing the change.
599−
600− * Added simple tests of the fold operator, thanks to Joey Adams.
601−
602− * Added simple tests of the array conversion code.
603−
604− * Added recognition of -- comments in the quasiquoter, which are
605− now stripped out.
606−
607−
608−### Version 0.2.4.1 (2012-08-29)
609− * Fixed the documentation of `In`. Thanks to rekado and dstcruz for
610− pointing this out.
611−
612−### Version 0.2.4.0 (2012-08-23)
613− * Added the `withTransactionSerializable` and `withTransactionModeRetry`
614− operators, thanks to Joey Adams.
615−
616−### Version 0.2.3.0 (2012-08-09)
617− * Added the `returning` operator, thanks to Jason Dusek
618−
619−### Version 0.2.2.0 (2012-07-26)
620− * Added a ToRow instance for the (:.) type, courtesy of Leonid Onokhov
621−
622− * Added the type oid for PostgreSQL's `uuid` type to BuiltinTypes
623−
624−### Version 0.2.1.0 (2012-07-23)
625− * Added the FromRow.fieldWith operator, thanks to Leonid Onokhov
626−
627− * Added a type synonym for FieldParser
628−
629−### Version 0.2.0.1 (2012-06-21)
630− * Fixed a compatibility problem with PostgreSQL 8.1, which does not allow
631− clients to set their own value for `standard_conforming_strings`. This
632− connection variable is still set to `on` for PostgreSQL 8.2 and later.
633−
634−### Version 0.2: (2012-06-19)
635− * Removed the conversion from `timestamp` to `UTCTime`. Some code will be
636− broken even though it will still compile.
637−
638− * Renamed a number of data constructors, mostly in the BuiltinTypes module.
639−
640− * Exported ToRow/FromRow from Database.PostgreSQL.Simple
641−
642−
643−### Version 0.1.4.3: (2012-06-10)
644− * Fix language extensions for compatibility with GHC 7.0
645−
646−### Version 0.1.4.2: (2012-06-10)
647− * Fix a wayward dependency on Text.
648−
649−### Version 0.1.4.1: (2012-06-10)
650− * Added support for timezones with minutes in their UTC offset.
651−
652−### Version 0.1.4: (2012-06-10)
653− * Removed pcre-light dependency, courtesy of Joey Adams.
654−
655− * Reworked support for the Time types.
656−
657− * The conversion from PostgreSQL's `timestamp` (without time zone) type
658− to Haskell's `UTCTime` type is deprecated and will be removed in 0.2.
659−
660− * `Data.Time.LocalTime` now has `FromField`/`ToField` instances. It is
661− now the preferred way of dealing with `timestamp` (without time zone).
662−
663− * `Database.PostgreSQL.Simple.Time` is a new module that offers types
664− that accommodate PostgreSQL's infinities.
665−
666− * All time-related `FromField`/`ToField` instances are now based on new,
667− higher-speed parsers and printers instead of those provided by the
668− time package included in GHC.
669−
670− * Planned breaking changes for 0.2:
671−
672− * Removing the conversion from `timestamp` to `UTCTime`.
673−
674− * Renaming some of the type names in `BuiltinTypes`.
675−
676−
677−### Version 0.1.3: (2012-05-30)
678− * Made ZonedTime an instance of FromField and ToField
679−
680− * Added getNotificationNonBlocking
681−
682−
683−### Version 0.1.2: (2012-05-09)
684− * Switched to libpq-based escaping for bytea types; Binary now works with
685− PostgreSQL 8 courtesy of Joey Adams.
686−
687− * postgresql-simple now sets standard_conforming_strings to "on". This
688− per-connection variable is initialized according to the server
689− configuration, which defaults to "off" for PostgreSQL < 9, and "on"
690− for PostgreSQL >= 9. You may need to adjust any string literals in
691− your SQL queries, or set the variable yourself.
692−
693− * Exported (:.) from Database.PostgreSQL.Simple
694−
695−
696−### Version 0.1.1: (2012-05-06)
697− * Added some preliminary documentation for the Ok, Notification, and
698− LargeObjects modules
699−
700− * Implemented the `fail` method for the monad instance for `Ok`.
701−
702− * Fixed a bug relating to handling the transaction level
703−
704−
705−### Version 0.1: (2012-05-04)
706− * Renamed several modules, typeclasses, and functions:
707−
708− QueryParams (renderParams) -> ToRow (toRow)
709− QueryResults (convertResults) -> FromRow (fromRow)
710− Param (render) -> ToField (toField)
711− Result (convert) -> FromField (fromField)
712−
713− * Added the `Database.PostgreSQL.Simple.Ok` module, a variation of
714− `Either SomeException` that has an instance for `Alternative` and also
715− uses a list of exceptions to track the ways it has failed.
716−
717− * Changed the return type of `fromField` and `fromRow` from
718− `Either SomeException` to `Ok`.
719−
720− * Thanks to suggestions from Ozgun Ataman, the `FromRow` typeclass has been
721− massively improved. The result is simpler definitions and better
722− compositionality. Also, user-defined instances need not be to be
723− concerned about forcing the converted results to WHNF. Here is an
724− example comparing the old to the new:
725−
726− instance (Result a, Result b) => QueryResults (a,b) where
727− convertResults [fa,fb] [va,vb] = do
728− !a <- convert fa va
729− !b <- convert fb vb
730− return (a,b)
731− convertResults fs vs = convertError fs vs 2
732−
733− instance (FromField a, FromField b) => FromRow (a,b) where
734− fromRow = (,) <$> field <*> field
735−
736− * Added `(:.)`, a pair that allows one to compose `FromRow` instances:
737−
738− instance (FromRow a, FromRow b) => FromRow (a :. b) where
739− fromRow = (:.) <$> fromRow <*> fromRow
740−
741− * Moved the contents `Field` module into the `FromField` module.
742−
743− * Removed the `RawResult` type.
744−
745− * Added `DefaultIsolationLevel` as a distinct `IsolationLevel` option
746− and `DefaultReadWriteMode` as a distinct `ReadWriteMode`.
CONTRIBUTING.mddeleted−13
@@ -1,13 +0,0 @@
1−Patches welcome!
2−
3−- If you are only going to bump bounds:
4− - If it's really **only bounds**, please simply open an issue (so you'll have a URL to refer to). I have a semi-automated process to make revisions, pull requests only disturb it.
5− - If patch includes **source code change** (i.e. I'll need to make a release), and it's a patch to support **newer base/GHC version**:
6− - Amend `tested-with` to include that GHC
7− - Regenerate `.github/workflows/haskell-ci.yml` with `haskell-ci regenerate` (get the latest from [GitHub haskell-ci/haskell-ci](https://github.com/haskell-ci/haskell-ci))
8−
9−- Don't edit `CHANGELOG.md`, rather include a copyable entry in your pull request description. I often process pull requests in bulk, and everyone editing the `CHANGELOG.md` causes unnecessary conflicts.
10−- For the same reason, do not edit `version` or `x-revision`
11−
12−- I use [`stylish-haskell`](https://github.com/jaspervdj/stylish-haskell) to format imports. I encourage you to use it too, when contributing.
13−- General code style is 4 spaces, just look around how it looks, it's not so strict.
CONTRIBUTORSdeleted−36
@@ -1,36 +0,0 @@
1−Bryan O'Sullivan <bos@serpentine.com>
2−Leon P Smith <leon@melding-monads.com>
3−Felipe Lessa <felipe.lessa@gmail.com>
4−Ozgun Ataman <ozataman@gmail.com>
5−Joey Adams <joeyadams3.14159@gmail.com>
6−Rekado <rekado@elephly.net>
7−Leonid Onokhov <sopvop@gmail.com>
8−Bas van Dijk <v.dijk.bas@gmail.com>
9−Jason Dusek <jason.dusek@gmail.com>
10−Jeff Chu <jeff@kiteedu.com>
11−Oliver Charles <oliver.g.charles@gmail.com>
12−Simon Meier <iridcode@gmail.com>
13−Alexey Uimanov <s9gf4ult@gmail.com>
14−Doug Beardsley <mightybyte@gmail.com>
15−Manuel Gómez <targen@gmail.com>
16−Michael Snoyman <michael@snoyman.com>
17−Adam Bergmark <adam@edea.se>
18−Tobias Florek <tob@butter.sh>
19−Francesco Mazzoli <francesco.mazzoli@erudify.com>
20−Chris Allen <cma@bitemyapp.com>
21−Simon Hengel <sol@typeful.net>
22−Tom Ellis <tom-2013@purelyagile.com>
23−Mike Ledger <mike@quasimal.com>
24−João Cristóvão <jmacristovao@gmail.com>
25−Bardur Arantsson <bardur@scientician.net>
26−Travis Staton <hello@travisstaton.com>
27−Sam Rijs <srijs@airpost.net>
28−Janne Hellsten <jjhellst@gmail.com>
29−Timmy Tofu <timmytofu@users.noreply.github.com>
30−Alexey Khudyakov <alexey.skladnoy@gmail.com>
31−Timo von Holtz <tvh@anchor.com.au>
32−Amit Levy <amit@amitlevy.com>
33−Ben Gamari <ben@smart-cactus.org>
34−Edgar Gomes Araujo <talktoedgar@gmail.com>
35−Erik Hesselink <hesselink@gmail.com>
36−Matvey Aksenov <matvey.aksenov@gmail.com>
README.mddeleted−4
@@ -1,4 +0,0 @@
1−[![Hackage page (downloads and API reference)][hackage-png]][hackage]
2−
3− [hackage-png]: http://img.shields.io/hackage/v/postgresql-simple.svg
4− [hackage]: http://hackage.haskell.org/package/postgresql-simple
bench/Select.hsdeleted−32
@@ -1,32 +0,0 @@
1−{-# LANGUAGE OverloadedStrings #-}
2−module Main where
3−
4−import Database.PostgreSQL.Simple
5−import qualified Database.PostgreSQL.Simple.Vector as V
6−import qualified Database.PostgreSQL.Simple.Vector.Unboxed as VU
7−
8−import System.Environment (getArgs)
9−import Data.Foldable (Foldable, foldl')
10−import qualified Data.Vector.Unboxed as VU
11−
12−main :: IO ()
13−main = do
14− args <- getArgs
15− conn <- connectPostgreSQL ""
16− case args of
17− ("vector":_) -> do
18− result <- V.query_ conn "SELECT * FROM generate_series(1, 10000000);"
19− print (process result)
20− ("unboxed":_) -> do
21− -- dummy column
22− result <- VU.query_ conn "SELECT (NULL :: VOID), * FROM generate_series(1, 10000000);"
23− print (process' result)
24− _ -> do
25− result <- query_ conn "SELECT * FROM generate_series(1, 10000000);"
26− print (process result)
27−
28−process :: Foldable f => f (Only Int) -> Int
29−process = foldl' (\x (Only y) -> max x y) 0
30−
31−process' :: VU.Vector ((), Int) -> Int
32−process' = VU.foldl' (\x (_, y) -> max x y) 0
cabal.haskell-cideleted−5
@@ -1,5 +0,0 @@
1−branches: master
2−postgresql: True
3−
4−-- services aren't supported on Travis on macOS
5−-- osx: 8.4.4
cabal.projectdeleted−4
@@ -1,4 +0,0 @@
1−packages: .
2−tests: true
3−
4−allow-newer: cryptohash-md5-0.11.100.1:base
cabal.project.local.windeleted−4
@@ -1,4 +0,0 @@
1−constraints: these -assoc
2−
3−package postgresql-libpq
4− flags: -use-pkg-config
postgresql-simple.cabal+68−158
@@ -1,175 +1,85 @@
1−cabal-version: 1.12
2−name: postgresql-simple
3−version: 0.7.0.0
4−x-revision: 1
5−synopsis: Mid-Level PostgreSQL client library
6−description:
7− Mid-Level PostgreSQL client library, forked from mysql-simple.
1+Name: postgresql-simple
2+Version: 0.1.3
3+Synopsis: Mid-Level PostgreSQL client library
4+Description:
5+ Mid-Level PostgreSQL client library, forked from mysql-simple.
6+License: BSD3
7+License-file: LICENSE
8+Author: Bryan O'Sullivan, Leon P Smith
9+Maintainer: Leon P Smith <leon@melding-monads.com>
10+Copyright: (c) 2011 MailRank, Inc.
11+ (c) 2011 Leon P Smith
12+Category: Database
13+Build-type: Simple
814
9−license: BSD3
10−license-file: LICENSE
11−author: Bryan O'Sullivan, Leon P Smith
12−maintainer: Oleg Grenrus <oleg.grenrus@iki.fi>
13−copyright:
14− (c) 2011 MailRank, Inc.
15− (c) 2011-2018 Leon P Smith
16− (c) 2018-2020 Oleg Grenrus
15+Cabal-version: >= 1.9.2
1716
18−category: Database
19−build-type: Simple
20−extra-source-files:
21− CHANGES.md
22− CONTRIBUTORS
23− test/results/malformed-input.expected
24− test/results/unique-constraint-violation.expected
17+Library
18+ hs-source-dirs: src
19+ Exposed-modules:
20+ Database.PostgreSQL.Simple
21+ Database.PostgreSQL.Simple.BuiltinTypes
22+ Database.PostgreSQL.Simple.FromField
23+ Database.PostgreSQL.Simple.FromRow
24+ Database.PostgreSQL.Simple.LargeObjects
25+ Database.PostgreSQL.Simple.Notification
26+ Database.PostgreSQL.Simple.Ok
27+ Database.PostgreSQL.Simple.SqlQQ
28+ Database.PostgreSQL.Simple.ToField
29+ Database.PostgreSQL.Simple.ToRow
30+ Database.PostgreSQL.Simple.Types
31+-- Other-modules:
32+ Database.PostgreSQL.Simple.Internal
2533
26−tested-with:
27− GHC ==8.6.5
28− || ==8.8.4
29− || ==8.10.7
30− || ==9.0.2
31− || ==9.2.8
32− || ==9.4.8
33− || ==9.6.3
34− || ==9.8.1
34+ Other-modules:
35+ Database.PostgreSQL.Simple.Compat
3536
36−library
37− default-language: Haskell2010
38− hs-source-dirs: src
39− exposed-modules:
40− Database.PostgreSQL.Simple
41− Database.PostgreSQL.Simple.Arrays
42− Database.PostgreSQL.Simple.Copy
43− Database.PostgreSQL.Simple.Cursor
44− Database.PostgreSQL.Simple.Errors
45− Database.PostgreSQL.Simple.FromField
46− Database.PostgreSQL.Simple.FromRow
47− Database.PostgreSQL.Simple.HStore
48− Database.PostgreSQL.Simple.HStore.Internal
49− Database.PostgreSQL.Simple.Internal
50− Database.PostgreSQL.Simple.LargeObjects
51− Database.PostgreSQL.Simple.Newtypes
52− Database.PostgreSQL.Simple.Notification
53− Database.PostgreSQL.Simple.Ok
54− Database.PostgreSQL.Simple.Range
55− Database.PostgreSQL.Simple.SqlQQ
56− Database.PostgreSQL.Simple.Time
57− Database.PostgreSQL.Simple.Time.Internal
58− Database.PostgreSQL.Simple.ToField
59− Database.PostgreSQL.Simple.ToRow
60− Database.PostgreSQL.Simple.Transaction
61− Database.PostgreSQL.Simple.TypeInfo
62− Database.PostgreSQL.Simple.TypeInfo.Macro
63− Database.PostgreSQL.Simple.TypeInfo.Static
64− Database.PostgreSQL.Simple.Types
65− Database.PostgreSQL.Simple.Vector
66− Database.PostgreSQL.Simple.Vector.Unboxed
37+ Build-depends:
38+ attoparsec >= 0.8.5.3,
39+ base < 5,
40+ blaze-builder,
41+ blaze-textual,
42+ bytestring >= 0.9,
43+ containers,
44+ postgresql-libpq >= 0.6.2,
45+ pcre-light,
46+ old-locale,
47+ template-haskell,
48+ text >= 0.11.1,
49+ time,
50+ transformers,
51+ vector
6752
68− -- Other-modules:
69− other-modules:
70− Database.PostgreSQL.Simple.Compat
71− Database.PostgreSQL.Simple.HStore.Implementation
72− Database.PostgreSQL.Simple.Internal.PQResultUtils
73− Database.PostgreSQL.Simple.Time.Implementation
74− Database.PostgreSQL.Simple.Time.Internal.Parser
75− Database.PostgreSQL.Simple.Time.Internal.Printer
76− Database.PostgreSQL.Simple.TypeInfo.Types
77−
78− -- GHC bundled libs
79− build-depends:
80− base >=4.12.0.0 && <4.20
81− , bytestring >=0.10.8.2 && <0.13
82− , containers >=0.6.0.1 && <0.7
83− , template-haskell >=2.14.0.0 && <2.22
84− , text >=1.2.3.0 && <1.3 || >=2.0 && <2.2
85− , time-compat >=1.9.5 && <1.12
86− , transformers >=0.5.6.2 && <0.7
87−
88− -- Other dependencies
89− build-depends:
90− aeson >=2.1.2.1 && <2.3
91− , attoparsec >=0.14.4 && <0.15
92− , case-insensitive >=1.2.1.0 && <1.3
93− , hashable >=1.4.3.0 && <1.5
94− , Only >=0.1 && <0.1.1
95− , postgresql-libpq >=0.10.0.0 && <0.11
96− , scientific >=0.3.7.0 && <0.4
97− , uuid-types >=1.0.5 && <1.1
98− , vector >=0.13.0.0 && <0.14
99−
100− default-extensions:
101− BangPatterns
102− DoAndIfThenElse
103− OverloadedStrings
104− TypeOperators
105− ViewPatterns
53+ extensions: DoAndIfThenElse, OverloadedStrings, BangPatterns, ViewPatterns
54+ TypeOperators
10655
107− ghc-options: -Wall -fno-warn-name-shadowing
56+ ghc-options: -Wall -fno-warn-name-shadowing
10857
10958source-repository head
11059 type: git
111− location: http://github.com/haskellari/postgresql-simple
60+ location: http://github.com/lpsmith/postgresql-simple
11261
113−test-suite inspection
114− default-language: Haskell2010
115− type: exitcode-stdio-1.0
116− hs-source-dirs: test
117− main-is: Inspection.hs
118− build-depends:
119− base
120− , inspection-testing >=0.4.1.1 && <0.6
121− , postgresql-libpq
122− , postgresql-simple
123− , tasty
124− , tasty-hunit
62+source-repository this
63+ type: git
64+ location: http://github.com/lpsmith/postgresql-simple
65+ tag: v0.1.3
12566
12667test-suite test
127− default-language: Haskell2010
128− type: exitcode-stdio-1.0
129− hs-source-dirs: test
130− main-is: Main.hs
68+ type: exitcode-stdio-1.0
69+
70+ hs-source-dirs: test
71+ main-is: Main.hs
13172 other-modules:
13273 Common
133− Exception
134− Interval
74+ Bytea
13575 Notify
136− Serializable
137− Time
138−
139− ghc-options: -threaded
140− ghc-options: -Wall -fno-warn-name-shadowing -fno-warn-unused-do-bind
141− default-extensions:
142− NamedFieldPuns
143− OverloadedStrings
144− PatternGuards
145− Rank2Types
146− RecordWildCards
147− ScopedTypeVariables
14876
149− build-depends:
150− aeson
151− , base
152− , base16-bytestring
153− , bytestring
154− , case-insensitive
155− , containers
156− , cryptohash-md5 >=0.11.100.1 && <0.12
157− , filepath
158− , HUnit
159− , postgresql-simple
160− , tasty
161− , tasty-golden
162− , tasty-hunit
163− , text
164− , time-compat
165− , vector
77+ ghc-options: -Wall -fno-warn-name-shadowing -fno-warn-unused-do-bind
16678
167−benchmark select
168− default-language: Haskell2010
169− type: exitcode-stdio-1.0
170− hs-source-dirs: bench
171− main-is: Select.hs
172− build-depends:
173− base
174− , postgresql-simple
175− , vector
79+ build-depends: base
80+ , base16-bytestring
81+ , bytestring
82+ , cryptohash
83+ , HUnit
84+ , postgresql-simple
85+ , text
sdist.shdeleted−25
@@ -1,25 +0,0 @@
1−#!/bin/bash
2−
3−echo "Generating CHANGELOG.md"
4−echo
5−
6−cat <<HEADER > CHANGELOG.md
7−For the full changelog, see
8−<https://github.com/lpsmith/postgresql-simple/blob/master/CHANGES.md>
9−
10−HEADER
11−
12−perl -ne '$n++ if /^###/; exit if $n==2; print' CHANGES.md >> CHANGELOG.md
13−
14−cat CHANGELOG.md
15−rm -f ./dist/*.tar
16−rm -f ./dist/*.tar.gz
17−cabal sdist
18−cd dist
19−wc *.tar.gz
20−gunzip *.gz
21−wc *.tar
22−zopfli *.tar
23−wc *.tar.gz
24−cd ..
25−rm -f ./dist/*.tar
src/Database/PostgreSQL/Simple.hs+319−378
@@ -1,18 +1,14 @@
1−{-# LANGUAGE DeriveDataTypeable #-}
2−{-# LANGUAGE NamedFieldPuns #-}
3−{-# LANGUAGE OverloadedStrings #-}
4−{-# LANGUAGE PatternGuards #-}
5−{-# LANGUAGE RecordWildCards #-}
6−{-# LANGUAGE ViewPatterns #-}
1+{-# LANGUAGE DeriveDataTypeable, RecordWildCards, NamedFieldPuns #-}
72
83------------------------------------------------------------------------------
94-- |
105-- Module: Database.PostgreSQL.Simple
116-- Copyright: (c) 2011 MailRank, Inc.
12−-- (c) 2011-2012 Leon P Smith
7+-- (c) 2011 Leon P Smith
138-- License: BSD3
149-- Maintainer: Leon P Smith <leon@melding-monads.com>
1510-- Stability: experimental
11+-- Portability: portable
1612--
1713-- A mid-level client library for the PostgreSQL database, aimed at ease of
1814-- use and high performance.
@@ -42,9 +38,6 @@ module Database.PostgreSQL.Simple
4238 -- ** Modifying multiple rows at once
4339 -- $many
4440
45− -- ** @RETURNING@: modifications that return results
46− -- $returning
47−
4841 -- * Extracting results
4942 -- $result
5043
@@ -55,35 +48,27 @@ module Database.PostgreSQL.Simple
5548 -- $types
5649
5750 -- * Types
58− Connection
51+ Base.ConnectInfo(..)
52+ , Connection
5953 , Query
60− , ToRow
61− , FromRow
6254 , In(..)
6355 , Binary(..)
6456 , Only(..)
6557 , (:.)(..)
6658 -- ** Exceptions
67− , SomePostgreSqlException(..)
6859 , SqlError(..)
69− , PQ.ExecStatus(..)
70− , FormatError(..)
71− , QueryError(..)
72− , ResultError(..)
60+ , FormatError(fmtMessage, fmtQuery, fmtParams)
61+ , QueryError(qeMessage, qeQuery)
62+ , ResultError(errSQLType, errHaskellType, errMessage)
7363 -- * Connection management
74− , Base.connectPostgreSQL
75− , Base.close
7664 , Base.connect
77− , Base.withConnect
78− , Base.ConnectInfo(..)
79− , Base.defaultConnectInfo
65+ , Base.connectPostgreSQL
8066 , Base.postgreSQLConnectionString
67+ , Base.defaultConnectInfo
68+ , Base.close
8169 -- * Queries that return results
8270 , query
8371 , query_
84− -- ** Queries taking parser as argument
85− , queryWith
86− , queryWith_
8772 -- * Queries that stream results
8873 , FoldOptions(..)
8974 , FetchQuantity(..)
@@ -94,15 +79,6 @@ module Database.PostgreSQL.Simple
9479 , foldWithOptions_
9580 , forEach
9681 , forEach_
97− , returning
98− -- ** Queries that stream results taking a parser as an argument
99− , foldWith
100− , foldWithOptionsAndParser
101− , foldWith_
102− , foldWithOptionsAndParser_
103− , forEachWith
104− , forEachWith_
105− , returningWith
10682 -- * Statements that do not return results
10783 , execute
10884 , execute_
@@ -110,9 +86,18 @@ module Database.PostgreSQL.Simple
11086-- , Base.insertID
11187 -- * Transaction handling
11288 , withTransaction
113− , withSavepoint
89+ , TransactionMode(..)
90+ , IsolationLevel(..)
91+ , ReadWriteMode(..)
92+ , defaultTransactionMode
93+ , defaultIsolationLevel
94+ , defaultReadWriteMode
95+ , withTransactionLevel
96+ , withTransactionMode
11497-- , Base.autocommit
11598 , begin
99+ , beginLevel
100+ , beginMode
116101 , commit
117102 , rollback
118103 -- * Helper functions
@@ -120,27 +105,50 @@ module Database.PostgreSQL.Simple
120105 , formatQuery
121106 ) where
122107
123−import Data.ByteString.Builder (Builder, byteString, char8)
124−import Control.Applicative ((<$>))
125−import Control.Exception as E
108+import Blaze.ByteString.Builder
109+ ( Builder, fromByteString, toByteString )
110+import Blaze.ByteString.Builder.Char8 (fromChar)
111+import Control.Applicative ((<$>), pure)
112+import Control.Concurrent.MVar
113+import Control.Exception
114+ ( Exception, onException, throw, throwIO, finally )
115+import Control.Monad (foldM)
126116import Data.ByteString (ByteString)
127117import Data.Int (Int64)
118+import qualified Data.IntMap as IntMap
128119import Data.List (intersperse)
129−import Data.Monoid (mconcat)
130−import Database.PostgreSQL.Simple.Compat ((<>), toByteString)
131−import Database.PostgreSQL.Simple.Cursor
120+import Data.Monoid (mappend, mconcat)
121+import Data.Typeable (Typeable)
122+import Database.PostgreSQL.Simple.BuiltinTypes
123+ ( oid2builtin, builtin2typname )
124+import Database.PostgreSQL.Simple.Compat ( mask )
132125import Database.PostgreSQL.Simple.FromField (ResultError(..))
133126import Database.PostgreSQL.Simple.FromRow (FromRow(..))
134−import Database.PostgreSQL.Simple.ToField (Action(..))
127+import Database.PostgreSQL.Simple.Ok
128+import Database.PostgreSQL.Simple.ToField (Action(..), inQuotes)
135129import Database.PostgreSQL.Simple.ToRow (ToRow(..))
136130import Database.PostgreSQL.Simple.Types
137131 ( Binary(..), In(..), Only(..), Query(..), (:.)(..) )
138132import Database.PostgreSQL.Simple.Internal as Base
139−import Database.PostgreSQL.Simple.Internal.PQResultUtils
140−import Database.PostgreSQL.Simple.Transaction
141133import qualified Database.PostgreSQL.LibPQ as PQ
134+import Text.Regex.PCRE.Light (compile, caseless, match)
142135import qualified Data.ByteString.Char8 as B
143−
136+import qualified Data.Text as T
137+import qualified Data.Text.Encoding as TE
138+import qualified Data.Vector as V
139+import Control.Monad.Trans.Reader
140+import Control.Monad.Trans.State.Strict
141+
142+-- | Exception thrown if a 'Query' could not be formatted correctly.
143+-- This may occur if the number of \'@?@\' characters in the query
144+-- string does not match the number of parameters provided.
145+data FormatError = FormatError {
146+ fmtMessage :: String
147+ , fmtQuery :: Query
148+ , fmtParams :: [ByteString]
149+ } deriving (Eq, Show, Typeable)
150+
151+instance Exception FormatError
144152
145153-- | Format a query string.
146154--
@@ -174,143 +182,56 @@ formatQuery conn q@(Query template) qs
174182formatMany :: (ToRow q) => Connection -> Query -> [q] -> IO ByteString
175183formatMany _ q [] = fmtError "no rows supplied" q []
176184formatMany conn q@(Query template) qs = do
177− case parseTemplate template of
178− Just (before, qbits, after) -> do
185+ case match re template [] of
186+ Just [_,before,qbits,after] -> do
179187 bs <- mapM (buildQuery conn q qbits . toRow) qs
180− return . toByteString . mconcat $ byteString before :
181− intersperse (char8 ',') bs ++
182− [byteString after]
183− Nothing -> fmtError "syntax error in multi-row template" q []
184−
185−-- Split the input string into three pieces, @before@, @qbits@, and @after@,
186−-- following this grammar:
187−--
188−-- start: ^ before qbits after $
189−-- before: ([^?]* [^?\w])? 'VALUES' \s*
190−-- qbits: '(' \s* '?' \s* (',' \s* '?' \s*)* ')'
191−-- after: [^?]*
192−--
193−-- \s: [ \t\n\r\f]
194−-- \w: [A-Z] | [a-z] | [\x80-\xFF] | '_' | '$' | [0-9]
195−--
196−-- This would be much more concise with some sort of regex engine.
197−-- 'formatMany' used to use pcre-light instead of this hand-written parser,
198−-- but pcre is a hassle to install on Windows.
199−parseTemplate :: ByteString -> Maybe (ByteString, ByteString, ByteString)
200−parseTemplate template =
201− -- Convert input string to uppercase, to facilitate searching.
202− search $ B.map toUpper_ascii template
188+ return . toByteString . mconcat $ fromByteString before :
189+ intersperse (fromChar ',') bs ++
190+ [fromByteString after]
191+ _ -> error "foo"
203192 where
204− -- Search for the next occurrence of "VALUES"
205− search bs =
206− case B.breakSubstring "VALUES" bs of
207− (x, y)
208− -- If "VALUES" is not present in the string, or any '?' characters
209− -- were encountered prior to it, fail.
210− | B.null y || ('?' `B.elem` x)
211− -> Nothing
212−
213− -- If "VALUES" is preceded by an identifier character (a.k.a. \w),
214− -- try the next occurrence.
215− | not (B.null x) && isIdent (B.last x)
216− -> search $ B.drop 6 y
217−
218− -- Otherwise, we have a legitimate "VALUES" token.
219− | otherwise
220− -> parseQueryBits $ skipSpace $ B.drop 6 y
221−
222− -- Parse '(' \s* '?' \s* . If this doesn't match
223− -- (and we don't consume a '?'), look for another "VALUES".
224− --
225− -- qb points to the open paren (if present), meaning it points to the
226− -- beginning of the "qbits" production described above. This is why we
227− -- pass it down to finishQueryBits.
228− parseQueryBits qb
229− | Just ('(', skipSpace -> bs1) <- B.uncons qb
230− , Just ('?', skipSpace -> bs2) <- B.uncons bs1
231− = finishQueryBits qb bs2
232− | otherwise
233− = search qb
234−
235− -- Parse (',' \s* '?' \s*)* ')' [^?]* .
236− --
237− -- Since we've already consumed at least one '?', there's no turning back.
238− -- The parse has to succeed here, or the whole thing fails
239− -- (because we don't allow '?' to appear outside of the VALUES list).
240− finishQueryBits qb bs0
241− | Just (')', bs1) <- B.uncons bs0
242− = if '?' `B.elem` bs1
243− then Nothing
244− else Just $ slice3 template qb bs1
245− | Just (',', skipSpace -> bs1) <- B.uncons bs0
246− , Just ('?', skipSpace -> bs2) <- B.uncons bs1
247− = finishQueryBits qb bs2
248− | otherwise
249− = Nothing
250−
251− -- Slice a string into three pieces, given the start offset of the second
252− -- and third pieces. Each "offset" is actually a tail of the uppercase
253− -- version of the template string. Its length is used to infer the offset.
254− --
255− -- It is important to note that we only slice the original template.
256− -- We don't want our all-caps trick messing up the actual query string.
257− slice3 source p1 p2 =
258− (s1, s2, source'')
259− where
260− (s1, source') = B.splitAt (B.length source - B.length p1) source
261− (s2, source'') = B.splitAt (B.length p1 - B.length p2) source'
262−
263− toUpper_ascii c | c >= 'a' && c <= 'z' = toEnum (fromEnum c - 32)
264− | otherwise = c
265−
266− -- Based on the definition of {ident_cont} in src/backend/parser/scan.l
267− -- in the PostgreSQL source. No need to check [a-z], since we converted
268− -- the whole string to uppercase.
269− isIdent c = (c >= '0' && c <= '9')
270− || (c >= 'A' && c <= 'Z')
271− || (c >= '\x80' && c <= '\xFF')
272− || c == '_'
273− || c == '$'
274−
275− -- Based on {space} in scan.l
276− isSpace_ascii c = (c == ' ') || (c >= '\t' && c <= '\r')
277−
278− skipSpace = B.dropWhile isSpace_ascii
193+ re = compile "^([^?]+\\bvalues\\s*)\
194+ \(\\(\\s*[?](?:\\s*,\\s*[?])*\\s*\\))\
195+ \([^?]*)$"
196+ [caseless]
197+
198+escapeStringConn :: Connection -> ByteString -> IO (Either ByteString ByteString)
199+escapeStringConn conn s =
200+ withConnection conn $ \c ->
201+ PQ.escapeStringConn c s >>= checkError c
279202
203+escapeByteaConn :: Connection -> ByteString -> IO (Either ByteString ByteString)
204+escapeByteaConn conn s =
205+ withConnection conn $ \c ->
206+ PQ.escapeByteaConn c s >>= checkError c
207+
208+checkError :: PQ.Connection -> Maybe a -> IO (Either ByteString a)
209+checkError _ (Just x) = return $ Right x
210+checkError c Nothing = Left . maybe "" id <$> PQ.errorMessage c
280211
281212buildQuery :: Connection -> Query -> ByteString -> [Action] -> IO Builder
282−buildQuery conn q template xs =
283− zipParams (split template) <$> mapM (buildAction conn q xs) xs
284− where split s =
285− -- This part escapes double '??'s to make literal '?'s possible
286− -- in PostgreSQL queries using the JSON operators: @?@, @?|@ and @?&@
287− let (h,t) = breakOnSingleQuestionMark s
288− in byteString h
289− : if B.null t
290− then []
291− else split (B.tail t)
292− zipParams (t:ts) (p:ps) = t <> p <> zipParams ts ps
213+buildQuery conn q template xs = zipParams (split template) <$> mapM sub xs
214+ where quote = either (\msg -> fmtError (utf8ToString msg) q xs)
215+ (inQuotes . fromByteString)
216+ utf8ToString = T.unpack . TE.decodeUtf8
217+ sub (Plain b) = pure b
218+ sub (Escape s) = quote <$> escapeStringConn conn s
219+ sub (EscapeBytea s) = quote <$> escapeByteaConn conn s
220+ sub (Many ys) = mconcat <$> mapM sub ys
221+ split s = fromByteString h : if B.null t then [] else split (B.tail t)
222+ where (h,t) = B.break (=='?') s
223+ zipParams (t:ts) (p:ps) = t `mappend` p `mappend` zipParams ts ps
293224 zipParams [t] [] = t
294− zipParams _ _ = fmtError (show countSingleQs ++
295− " single '?' characters, but " ++
225+ zipParams _ _ = fmtError (show (B.count '?' template) ++
226+ " '?' characters, but " ++
296227 show (length xs) ++ " parameters") q xs
297− countSingleQs = go 0 template
298− where go i "" = (i :: Int)
299− go i bs = case qms of
300− ("?","?") -> go i nextQMBS
301− ("?",_) -> go (i+1) nextQMBS
302− _ -> i
303− where qms = B.splitAt 1 qmBS
304− (qmBS,nextQMBS) = B.splitAt 2 qmBS'
305− qmBS' = B.dropWhile (/= '?') bs
306228
307229-- | Execute an @INSERT@, @UPDATE@, or other SQL query that is not
308230-- expected to return results.
309231--
310232-- Returns the number of rows affected.
311233--
312−-- Throws 'FormatError' if the query could not be formatted correctly, or
313−-- a 'SqlError' exception if the backend returns an error.
234+-- Throws 'FormatError' if the query could not be formatted correctly.
314235execute :: (ToRow q) => Connection -> Query -> q -> IO Int64
315236execute conn template qs = do
316237 result <- exec conn =<< formatQuery conn template qs
@@ -319,61 +240,15 @@ execute conn template qs = do
319240-- | Execute a multi-row @INSERT@, @UPDATE@, or other SQL query that is not
320241-- expected to return results.
321242--
322−-- Returns the number of rows affected. If the list of parameters is empty,
323−-- this function will simply return 0 without issuing the query to the backend.
324−-- If this is not desired, consider using the 'Values' constructor instead.
325−--
326−-- Throws 'FormatError' if the query could not be formatted correctly, or
327−-- a 'SqlError' exception if the backend returns an error.
328−--
329−-- For example, here's a command that inserts two rows into a table
330−-- with two columns:
331−--
332−-- @
333−-- executeMany c [sql|
334−-- INSERT INTO sometable VALUES (?,?)
335−-- |] [(1, \"hello\"),(2, \"world\")]
336−-- @
337−--
338−-- Here's an canonical example of a multi-row update command:
243+-- Returns the number of rows affected.
339244--
340−-- @
341−-- executeMany c [sql|
342−-- UPDATE sometable
343−-- SET y = upd.y
344−-- FROM (VALUES (?,?)) as upd(x,y)
345−-- WHERE sometable.x = upd.x
346−-- |] [(1, \"hello\"),(2, \"world\")]
347−-- @
348−
245+-- Throws 'FormatError' if the query could not be formatted correctly.
349246executeMany :: (ToRow q) => Connection -> Query -> [q] -> IO Int64
350247executeMany _ _ [] = return 0
351248executeMany conn q qs = do
352249 result <- exec conn =<< formatMany conn q qs
353250 finishExecute conn q result
354251
355−-- | Execute @INSERT ... RETURNING@, @UPDATE ... RETURNING@, or other SQL
356−-- query that accepts multi-row input and is expected to return results.
357−-- Note that it is possible to write
358−-- @'query' conn "INSERT ... RETURNING ..." ...@
359−-- in cases where you are only inserting a single row, and do not need
360−-- functionality analogous to 'executeMany'.
361−--
362−-- If the list of parameters is empty, this function will simply return @[]@
363−-- without issuing the query to the backend. If this is not desired,
364−-- consider using the 'Values' constructor instead.
365−--
366−-- Throws 'FormatError' if the query could not be formatted correctly.
367−returning :: (ToRow q, FromRow r) => Connection -> Query -> [q] -> IO [r]
368−returning = returningWith fromRow
369−
370−-- | A version of 'returning' taking parser as argument
371−returningWith :: (ToRow q) => RowParser r -> Connection -> Query -> [q] -> IO [r]
372−returningWith _ _ _ [] = return []
373−returningWith parser conn q qs = do
374− result <- exec conn =<< formatMany conn q qs
375− finishQueryWith parser conn q result
376−
377252-- | Perform a @SELECT@ or other SQL query that is expected to return
378253-- results. All results are retrieved and converted before this
379254-- function returns.
@@ -389,27 +264,17 @@ returningWith parser conn q qs = do
389264-- using 'execute' instead of 'query').
390265--
391266-- * 'ResultError': result conversion failed.
392−--
393−-- * 'SqlError': the postgresql backend returned an error, e.g.
394−-- a syntax or type error, or an incorrect table or column name.
395−query :: (ToRow q, FromRow r) => Connection -> Query -> q -> IO [r]
396−query = queryWith fromRow
267+query :: (ToRow q, FromRow r)
268+ => Connection -> Query -> q -> IO [r]
269+query conn template qs = do
270+ result <- exec conn =<< formatQuery conn template qs
271+ finishQuery conn template result
397272
398273-- | A version of 'query' that does not perform query substitution.
399274query_ :: (FromRow r) => Connection -> Query -> IO [r]
400−query_ = queryWith_ fromRow
401−
402−-- | A version of 'query' taking parser as argument
403−queryWith :: ToRow q => RowParser r -> Connection -> Query -> q -> IO [r]
404−queryWith parser conn template qs = do
405− result <- exec conn =<< formatQuery conn template qs
406− finishQueryWith parser conn template result
407−
408−-- | A version of 'query_' taking parser as argument
409−queryWith_ :: RowParser r -> Connection -> Query -> IO [r]
410−queryWith_ parser conn q@(Query que) = do
275+query_ conn q@(Query que) = do
411276 result <- exec conn que
412− finishQueryWith parser conn q result
277+ finishQuery conn q result
413278
414279-- | Perform a @SELECT@ or other SQL query that is expected to return
415280-- results. Results are streamed incrementally from the server, and
@@ -421,12 +286,6 @@ queryWith_ parser conn q@(Query que) = do
421286-- This fold is /not/ strict. The stream consumer is responsible for
422287-- forcing the evaluation of its result to avoid space leaks.
423288--
424−-- This is implemented using a database cursor. As such, this requires
425−-- a transaction. This function will detect whether or not there is a
426−-- transaction in progress, and will create a 'ReadCommitted' 'ReadOnly'
427−-- transaction if needed. The cursor is given a unique temporary name,
428−-- so the consumer may itself call fold.
429−--
430289-- Exceptions that may be thrown:
431290--
432291-- * 'FormatError': the query string could not be formatted correctly.
@@ -435,9 +294,7 @@ queryWith_ parser conn q@(Query que) = do
435294-- using 'execute' instead of 'query').
436295--
437296-- * 'ResultError': result conversion failed.
438−--
439−-- * 'SqlError': the postgresql backend returned an error, e.g.
440−-- a syntax or type error, or an incorrect table or column name.
297+
441298fold :: ( FromRow row, ToRow params )
442299 => Connection
443300 -> Query
@@ -447,20 +304,6 @@ fold :: ( FromRow row, ToRow params )
447304 -> IO a
448305fold = foldWithOptions defaultFoldOptions
449306
450−-- | A version of 'fold' taking a parser as an argument
451−foldWith :: ( ToRow params )
452− => RowParser row
453− -> Connection
454− -> Query
455− -> params
456− -> a
457− -> (a -> row -> IO a)
458− -> IO a
459−foldWith = foldWithOptionsAndParser defaultFoldOptions
460−
461−-- | Number of rows to fetch at a time. 'Automatic' currently defaults
462−-- to 256 rows, although it might be nice to make this more intelligent
463−-- based on e.g. the average size of the rows.
464307data FetchQuantity
465308 = Automatic
466309 | Fixed !Int
@@ -471,19 +314,12 @@ data FoldOptions
471314 transactionMode :: !TransactionMode
472315 }
473316
474−-- | defaults to 'Automatic', and 'TransactionMode' 'ReadCommitted' 'ReadOnly'
475317defaultFoldOptions :: FoldOptions
476318defaultFoldOptions = FoldOptions {
477319 fetchQuantity = Automatic,
478320 transactionMode = TransactionMode ReadCommitted ReadOnly
479321 }
480322
481−-- | The same as 'fold', but this provides a bit more control over
482−-- lower-level details. Currently, the number of rows fetched per
483−-- round-trip to the server and the transaction mode may be adjusted
484−-- accordingly. If the connection is already in a transaction,
485−-- then the existing transaction is used and thus the 'transactionMode'
486−-- option is ignored.
487323foldWithOptions :: ( FromRow row, ToRow params )
488324 => FoldOptions
489325 -> Connection
@@ -492,21 +328,9 @@ foldWithOptions :: ( FromRow row, ToRow params )
492328 -> a
493329 -> (a -> row -> IO a)
494330 -> IO a
495−foldWithOptions opts = foldWithOptionsAndParser opts fromRow
496−
497−-- | A version of 'foldWithOptions' taking a parser as an argument
498−foldWithOptionsAndParser :: (ToRow params)
499− => FoldOptions
500− -> RowParser row
501− -> Connection
502− -> Query
503− -> params
504− -> a
505− -> (a -> row -> IO a)
506− -> IO a
507−foldWithOptionsAndParser opts parser conn template qs a f = do
331+foldWithOptions opts conn template qs a f = do
508332 q <- formatQuery conn template qs
509− doFold opts parser conn template (Query q) a f
333+ doFold opts conn template (Query q) a f
510334
511335-- | A version of 'fold' that does not perform query substitution.
512336fold_ :: (FromRow r) =>
@@ -517,14 +341,6 @@ fold_ :: (FromRow r) =>
517341 -> IO a
518342fold_ = foldWithOptions_ defaultFoldOptions
519343
520−-- | A version of 'fold_' taking a parser as an argument
521−foldWith_ :: RowParser r
522− -> Connection
523− -> Query
524− -> a
525− -> (a -> r -> IO a)
526− -> IO a
527−foldWith_ = foldWithOptionsAndParser_ defaultFoldOptions
528344
529345foldWithOptions_ :: (FromRow r) =>
530346 FoldOptions
@@ -533,27 +349,18 @@ foldWithOptions_ :: (FromRow r) =>
533349 -> a -- ^ Initial state for result consumer.
534350 -> (a -> r -> IO a) -- ^ Result consumer.
535351 -> IO a
536−foldWithOptions_ opts conn query' a f = doFold opts fromRow conn query' query' a f
537−
538−-- | A version of 'foldWithOptions_' taking a parser as an argument
539−foldWithOptionsAndParser_ :: FoldOptions
540− -> RowParser r
541− -> Connection
542− -> Query -- ^ Query.
543− -> a -- ^ Initial state for result consumer.
544− -> (a -> r -> IO a) -- ^ Result consumer.
545− -> IO a
546−foldWithOptionsAndParser_ opts parser conn query' a f = doFold opts parser conn query' query' a f
547−
548−doFold :: FoldOptions
549− -> RowParser row
352+foldWithOptions_ opts conn query a f = doFold opts conn query query a f
353+
354+
355+doFold :: ( FromRow row )
356+ => FoldOptions
550357 -> Connection
551358 -> Query
552359 -> Query
553360 -> a
554361 -> (a -> row -> IO a)
555362 -> IO a
556−doFold FoldOptions{..} parser conn _template q a0 f = do
363+doFold FoldOptions{..} conn _template q a f = do
557364 stat <- withConnection conn PQ.transactionStatus
558365 case stat of
559366 PQ.TransIdle -> withTransactionMode transactionMode conn go
@@ -571,17 +378,11 @@ doFold FoldOptions{..} parser conn _template q a0 f = do
571378 PQ.TransUnknown -> fail "foldWithOpts FIXME: PQ.TransUnknown"
572379 -- Not sure what this means.
573380 where
574− declare =
575− declareCursor conn q
576− fetch cursor a =
577− foldForwardWithParser cursor parser chunkSize f a
578−
579− go = bracket declare closeCursor $ \cursor ->
580− let loop a = fetch cursor a >>=
581− \r -> case r of
582− Left x -> return x
583− Right x -> loop x
584− in loop a0
381+ go = do
382+ -- FIXME: what about name clashes with already-declared cursors?
383+ _ <- execute_ conn ("DECLARE fold NO SCROLL CURSOR FOR "
384+ `mappend` q)
385+ loop a `finally` execute_ conn "CLOSE fold"
585386
586387-- FIXME: choose the Automatic chunkSize more intelligently
587388-- One possibility is to use the type of the results, although this
@@ -592,6 +393,9 @@ doFold FoldOptions{..} parser conn _template q a0 f = do
592393 chunkSize = case fetchQuantity of
593394 Automatic -> 256
594395 Fixed n -> n
396+ loop a = do
397+ rs <- query conn "FETCH FORWARD ? FROM fold" (Only chunkSize)
398+ if null rs then return a else foldM f a rs >>= loop
595399
596400-- | A version of 'fold' that does not transform a state value.
597401forEach :: (ToRow q, FromRow r) =>
@@ -600,37 +404,188 @@ forEach :: (ToRow q, FromRow r) =>
600404 -> q -- ^ Query parameters.
601405 -> (r -> IO ()) -- ^ Result consumer.
602406 -> IO ()
603−forEach = forEachWith fromRow
407+forEach conn template qs = fold conn template qs () . const
604408{-# INLINE forEach #-}
605409
606−-- | A version of 'forEach' taking a parser as an argument
607−forEachWith :: ( ToRow q )
608− => RowParser r
609− -> Connection
610− -> Query
611− -> q
612− -> (r -> IO ())
613− -> IO ()
614−forEachWith parser conn template qs = foldWith parser conn template qs () . const
615−{-# INLINE forEachWith #-}
616−
617410-- | A version of 'forEach' that does not perform query substitution.
618411forEach_ :: (FromRow r) =>
619412 Connection
620413 -> Query -- ^ Query template.
621414 -> (r -> IO ()) -- ^ Result consumer.
622415 -> IO ()
623−forEach_ = forEachWith_ fromRow
416+forEach_ conn template = fold_ conn template () . const
624417{-# INLINE forEach_ #-}
625418
626−forEachWith_ :: RowParser r
627− -> Connection
628− -> Query
629− -> (r -> IO ())
630− -> IO ()
631−forEachWith_ parser conn template = foldWith_ parser conn template () . const
632−{-# INLINE forEachWith_ #-}
633−
419+forM' :: (Ord n, Num n) => n -> n -> (n -> IO a) -> IO [a]
420+forM' lo hi m = loop hi []
421+ where
422+ loop !n !as
423+ | n < lo = return as
424+ | otherwise = do
425+ a <- m n
426+ loop (n-1) (a:as)
427+
428+finishQuery :: (FromRow r) => Connection -> Query -> PQ.Result -> IO [r]
429+finishQuery conn q result = do
430+ status <- PQ.resultStatus result
431+ case status of
432+ PQ.EmptyQuery ->
433+ throwIO $ QueryError "query: Empty query" q
434+ PQ.CommandOk -> do
435+ throwIO $ QueryError "query resulted in a command response" q
436+ PQ.TuplesOk -> do
437+ ncols <- PQ.nfields result
438+ let unCol (PQ.Col x) = fromIntegral x :: Int
439+ typenames <- V.generateM (unCol ncols)
440+ (\(PQ.Col . fromIntegral -> col) -> do
441+ getTypename conn =<< PQ.ftype result col)
442+ nrows <- PQ.ntuples result
443+ ncols <- PQ.nfields result
444+ forM' 0 (nrows-1) $ \row -> do
445+ let rw = Row row typenames result
446+ case runStateT (runReaderT (unRP fromRow) rw) 0 of
447+ Ok (val,col) | col == ncols -> return val
448+ | otherwise -> do
449+ vals <- forM' 0 (ncols-1) $ \c -> do
450+ v <- PQ.getvalue result row c
451+ return ( typenames V.! unCol c
452+ , fmap ellipsis v )
453+ throw (ConversionFailed
454+ (show (unCol ncols) ++ " values: " ++ show vals)
455+ (show (unCol col) ++ " slots in target type")
456+ "mismatch between number of columns to \
457+ \convert and number in target type")
458+ Errors [] -> throwIO $ ConversionFailed "" "" "unknown error"
459+ Errors [x] -> throwIO x
460+ Errors xs -> throwIO $ ManyErrors xs
461+ PQ.CopyOut ->
462+ throwIO $ QueryError "query: COPY TO is not supported" q
463+ PQ.CopyIn ->
464+ throwIO $ QueryError "query: COPY FROM is not supported" q
465+ PQ.BadResponse -> throwResultError "query" result status
466+ PQ.NonfatalError -> throwResultError "query" result status
467+ PQ.FatalError -> throwResultError "query" result status
468+
469+ellipsis :: ByteString -> ByteString
470+ellipsis bs
471+ | B.length bs > 15 = B.take 10 bs `B.append` "[...]"
472+ | otherwise = bs
473+
474+
475+-- | Of the four isolation levels defined by the SQL standard,
476+-- these are the three levels distinguished by PostgreSQL as of version 9.0.
477+-- See <http://www.postgresql.org/docs/9.1/static/transaction-iso.html>
478+-- for more information. Note that prior to PostgreSQL 9.0, 'RepeatableRead'
479+-- was equivalent to 'Serializable'.
480+
481+data IsolationLevel
482+ = DefaultIsolationLevel -- ^ the isolation level will be taken from
483+ -- PostgreSQL's per-connection
484+ -- @default_transaction_isolation@ variable,
485+ -- which is initialized according to the
486+ -- server's config. The default configuration
487+ -- is 'ReadCommitted'.
488+ | ReadCommitted
489+ | RepeatableRead
490+ | Serializable
491+ deriving (Show, Eq, Ord, Enum, Bounded)
492+
493+data ReadWriteMode
494+ = DefaultReadWriteMode -- ^ the read-write mode will be taken from
495+ -- PostgreSQL's per-connection
496+ -- @default_transaction_read_only@ variable,
497+ -- which is initialized according to the
498+ -- server's config. The default configuration
499+ -- is 'ReadWrite'.
500+ | ReadWrite
501+ | ReadOnly
502+ deriving (Show, Eq, Ord, Enum, Bounded)
503+
504+data TransactionMode = TransactionMode {
505+ isolationLevel :: !IsolationLevel,
506+ readWriteMode :: !ReadWriteMode
507+ } deriving (Show, Eq)
508+
509+defaultTransactionMode :: TransactionMode
510+defaultTransactionMode = TransactionMode
511+ defaultIsolationLevel
512+ defaultReadWriteMode
513+
514+defaultIsolationLevel :: IsolationLevel
515+defaultIsolationLevel = DefaultIsolationLevel
516+
517+defaultReadWriteMode :: ReadWriteMode
518+defaultReadWriteMode = DefaultReadWriteMode
519+
520+-- | Execute an action inside a SQL transaction.
521+--
522+-- This function initiates a transaction with a \"@begin
523+-- transaction@\" statement, then executes the supplied action. If
524+-- the action succeeds, the transaction will be completed with
525+-- 'Base.commit' before this function returns.
526+--
527+-- If the action throws /any/ kind of exception (not just a
528+-- PostgreSQL-related exception), the transaction will be rolled back using
529+-- 'rollback', then the exception will be rethrown.
530+withTransaction :: Connection -> IO a -> IO a
531+withTransaction = withTransactionMode defaultTransactionMode
532+
533+-- | Execute an action inside a SQL transaction with a given isolation level.
534+withTransactionLevel :: IsolationLevel -> Connection -> IO a -> IO a
535+withTransactionLevel lvl
536+ = withTransactionMode defaultTransactionMode { isolationLevel = lvl }
537+
538+-- | Execute an action inside a SQL transaction with a given transaction mode.
539+withTransactionMode :: TransactionMode -> Connection -> IO a -> IO a
540+withTransactionMode mode conn act =
541+ mask $ \restore -> do
542+ beginMode mode conn
543+ r <- restore act `onException` rollback conn
544+ commit conn
545+ return r
546+
547+-- | Rollback a transaction.
548+rollback :: Connection -> IO ()
549+rollback conn = execute_ conn "ABORT" >> return ()
550+
551+-- | Commit a transaction.
552+commit :: Connection -> IO ()
553+commit conn = execute_ conn "COMMIT" >> return ()
554+
555+-- | Begin a transaction.
556+begin :: Connection -> IO ()
557+begin = beginMode defaultTransactionMode
558+
559+-- | Begin a transaction with a given isolation level
560+beginLevel :: IsolationLevel -> Connection -> IO ()
561+beginLevel lvl = beginMode defaultTransactionMode { isolationLevel = lvl }
562+
563+-- | Begin a transaction with a given transaction mode
564+beginMode :: TransactionMode -> Connection -> IO ()
565+beginMode mode conn = do
566+ _ <- execute_ conn $! Query (B.concat ["BEGIN", isolevel, readmode])
567+ return ()
568+ where
569+ isolevel = case isolationLevel mode of
570+ DefaultIsolationLevel -> ""
571+ ReadCommitted -> " ISOLATION LEVEL READ COMMITTED"
572+ RepeatableRead -> " ISOLATION LEVEL REPEATABLE READ"
573+ Serializable -> " ISOLATION LEVEL SERIALIZABLE"
574+ readmode = case readWriteMode mode of
575+ DefaultReadWriteMode -> ""
576+ ReadWrite -> " READ WRITE"
577+ ReadOnly -> " READ ONLY"
578+
579+fmtError :: String -> Query -> [Action] -> a
580+fmtError msg q xs = throw FormatError {
581+ fmtMessage = msg
582+ , fmtQuery = q
583+ , fmtParams = map twiddle xs
584+ }
585+ where twiddle (Plain b) = toByteString b
586+ twiddle (Escape s) = s
587+ twiddle (EscapeBytea s) = s
588+ twiddle (Many ys) = B.concat (map twiddle ys)
634589
635590-- $use
636591--
@@ -658,11 +613,9 @@ forEachWith_ parser conn template = foldWith_ parser conn template () . const
658613-- >
659614-- > import Database.PostgreSQL.Simple
660615-- >
661−-- > hello :: IO Int
662616-- > hello = do
663−-- > conn <- connectPostgreSQL ""
664−-- > [Only i] <- query_ conn "select 2 + 2"
665−-- > return i
617+-- > conn <- connect defaultConnectInfo
618+-- > query conn "select 2 + 2"
666619--
667620-- A 'Query' value does not represent the actual query that will be
668621-- executed, but is a template for constructing the final query.
@@ -723,30 +676,15 @@ forEachWith_ parser conn template = foldWith_ parser conn template () . const
723676-- The same kind of problem can arise with string literals if you have
724677-- the @OverloadedStrings@ language extension enabled. Again, just
725678-- use an explicit type signature if this happens.
726−--
727−-- Finally, remember that the compiler must be able to infer the type
728−-- of a query's /results/ as well as its parameters. We might like
729−-- the following example to work:
730−--
731−-- > print =<< query_ conn "select 2 + 2"
732−--
733−-- Unfortunately, while a quick glance tells us that the result type
734−-- should be a single row containing a single numeric column, the
735−-- compiler has no way to infer what the types are. We can easily fix
736−-- this by providing an explicit type annotation:
737−--
738−-- > xs <- query_ conn "select 2 + 2"
739−-- > print (xs :: [Only Int])
740679
741680-- $only_param
742681--
743682-- Haskell lacks a single-element tuple type, so if you have just one
744−-- value you want substituted into a query or a single-column result,
745−-- what should you do?
683+-- value you want substituted into a query, what should you do?
746684--
747685-- The obvious approach would appear to be something like this:
748686--
749−-- > instance (ToField a) => ToRow a where
687+-- > instance (Param a) => QueryParam a where
750688-- > ...
751689--
752690-- Unfortunately, this wreaks havoc with type inference, so we take a
@@ -757,9 +695,6 @@ forEachWith_ parser conn template = foldWith_ parser conn template () . const
757695--
758696-- > execute conn "insert into users (first_name) values (?)"
759697-- > ["Nuala"]
760−--
761−-- A row of /n/ query results is represented using an /n/-tuple, so
762−-- you should use 'Only' to represent a single-column result.
763698
764699-- $in
765700--
@@ -777,7 +712,7 @@ forEachWith_ parser conn template = foldWith_ parser conn template () . const
777712-- Here's an example:
778713--
779714-- > query conn "select * from users where first_name in ?" $
780−-- > Only $ In ["Anna", "Boris", "Carla"]
715+-- > In ["Anna", "Boris", "Carla"]
781716--
782717-- If your 'In'-wrapped list is empty, the string @\"(null)\"@ will be
783718-- substituted instead, to ensure that your clause remains
@@ -805,7 +740,7 @@ forEachWith_ parser conn template = foldWith_ parser conn template () . const
805740-- * There must be no other \"@?@\" characters anywhere in your
806741-- template.
807742--
808−-- * There must be one or more \"@?@\" in the parentheses.
743+-- * There must one or more \"@?@\" in the parentheses.
809744--
810745-- * Extra white space is fine.
811746--
@@ -826,22 +761,6 @@ forEachWith_ parser conn template = foldWith_ parser conn template () . const
826761-- > insert into users (first_name,last_name) values
827762-- > ('Boris','Karloff'),('Ed','Wood')
828763
829−-- $returning
830−--
831−-- PostgreSQL supports returning values from data manipulation statements
832−-- such as @INSERT@ and @UPDATE@. You can use these statements by
833−-- using 'query' instead of 'execute'. For multi-tuple inserts,
834−-- use 'returning' instead of 'executeMany'.
835−--
836−-- For example, were there an auto-incrementing @id@ column and
837−-- timestamp column @t@ that defaulted to the present time for the
838−-- @sales@ table, then the following query would insert two new
839−-- sales records and also return their new @id@s and timestamps.
840−--
841−-- > let q = "insert into sales (amount, label) values (?,?) returning id, t"
842−-- > xs :: [(Int, UTCTime)] <- query conn q (15,"Sawdust")
843−-- > ys :: [(Int, UTCTime)] <- returning conn q [(20,"Chips"),(300,"Wood")]
844−
845764-- $result
846765--
847766-- The 'query' and 'query_' functions return a list of values in the
@@ -876,7 +795,7 @@ forEachWith_ parser conn template = foldWith_ parser conn template () . const
876795--
877796-- Although SQL can accommodate @NULL@ as a value for any of these
878797-- types, Haskell cannot. If your result contains columns that may be
879−-- @NULL@, be sure that you use 'Maybe' in those positions of your
798+-- @NULL@, be sure that you use 'Maybe' in those positions of of your
880799-- tuple.
881800--
882801-- > (Text, Maybe Int, Int)
@@ -902,7 +821,7 @@ forEachWith_ parser conn template = foldWith_ parser conn template () . const
902821-- all values of the given PostgreSQL type is considered \"compatible\".
903822-- For instance, you can always extract a PostgreSQL 16-bit @SMALLINT@
904823-- column to a Haskell 'Int'. The Haskell 'Float' type can accurately
905−-- represent a @SMALLINT@, so it is considered compatible with those types.
824+-- represent a @SMALLINT@, so it is considered compatble with those types.
906825--
907826-- * A numeric compatibility check is based only on the type of a
908827-- column, /not/ on its values. For instance, a PostgreSQL 64-bit
@@ -916,3 +835,25 @@ forEachWith_ parser conn template = foldWith_ parser conn template () . const
916835-- UTF-8. If you use some other encoding, decoding may fail or give
917836-- wrong results. In such cases, write a @newtype@ wrapper and a
918837-- custom 'Result' instance to handle your encoding.
838+
839+getTypename :: Connection -> PQ.Oid -> IO ByteString
840+getTypename conn@Connection{..} oid =
841+ case oid2builtin oid of
842+ Just builtin -> return $! builtin2typname builtin
843+ Nothing -> modifyMVar connectionObjects $ \oidmap -> do
844+ case IntMap.lookup (oid2int oid) oidmap of
845+ Just name -> return (oidmap, name)
846+ Nothing -> do
847+ names <- query conn "SELECT typname FROM pg_type WHERE oid=?"
848+ (Only oid)
849+ name <- case names of
850+ [] -> return $ throw SqlError {
851+ sqlNativeError = -1,
852+ sqlErrorMsg = "invalid type oid",
853+ sqlState = ""
854+ }
855+ [Only x] -> return x
856+ _ -> fail "typename query returned more than one result"
857+ -- oid is a primary key, so the query should
858+ -- never return more than one result
859+ return (IntMap.insert (oid2int oid) name oidmap, name)
src/Database/PostgreSQL/Simple.hs-bootdeleted−23
@@ -1,23 +0,0 @@
1−module Database.PostgreSQL.Simple
2− ( Connection
3− , Query
4− , query
5− , query_
6− , execute
7− , execute_
8− , executeMany
9− ) where
10−
11−import Data.Int(Int64)
12−import Database.PostgreSQL.Simple.Internal
13−import Database.PostgreSQL.Simple.Types
14−import {-# SOURCE #-} Database.PostgreSQL.Simple.FromRow
15−import {-# SOURCE #-} Database.PostgreSQL.Simple.ToRow
16−
17−query :: (ToRow q, FromRow r) => Connection -> Query -> q -> IO [r]
18−
19−query_ :: FromRow r => Connection -> Query -> IO [r]
20−
21−execute :: ToRow q => Connection -> Query -> q -> IO Int64
22−
23−executeMany :: ToRow q => Connection -> Query -> [q] -> IO Int64
src/Database/PostgreSQL/Simple/Arrays.hsdeleted−92
@@ -1,92 +0,0 @@
1−{-# LANGUAGE PatternGuards #-}
2−
3−------------------------------------------------------------------------------
4−-- |
5−-- Module: Database.PostgreSQL.Simple.Arrays
6−-- Copyright: (c) 2012 Leon P Smith
7−-- License: BSD3
8−-- Maintainer: Leon P Smith <leon@melding-monads.com>
9−-- Stability: experimental
10−--
11−-- A Postgres array parser and pretty-printer.
12−------------------------------------------------------------------------------
13−
14−module Database.PostgreSQL.Simple.Arrays where
15−
16−import Control.Applicative (Applicative(..), Alternative(..), (<$>))
17−import Data.ByteString.Char8 (ByteString)
18−import qualified Data.ByteString.Char8 as B
19−import Data.Monoid
20−import Data.Attoparsec.ByteString.Char8
21−
22−
23−-- | Parse one of three primitive field formats: array, quoted and plain.
24−arrayFormat :: Char -> Parser ArrayFormat
25−arrayFormat delim = Array <$> array delim
26− <|> Plain <$> plain delim
27− <|> Quoted <$> quoted
28−
29−data ArrayFormat = Array [ArrayFormat]
30− | Plain ByteString
31− | Quoted ByteString
32− deriving (Eq, Show, Ord)
33−
34−array :: Char -> Parser [ArrayFormat]
35−array delim = char '{' *> option [] (arrays <|> strings) <* char '}'
36− where
37− strings = sepBy1 (Quoted <$> quoted <|> Plain <$> plain delim) (char delim)
38− arrays = sepBy1 (Array <$> array delim) (char ',')
39− -- NB: Arrays seem to always be delimited by commas.
40−
41−-- | Recognizes a quoted string.
42−quoted :: Parser ByteString
43−quoted = char '"' *> option "" contents <* char '"'
44− where
45− esc' = char '\\' *> (char '\\' <|> char '"')
46− unQ = takeWhile1 (notInClass "\"\\")
47− contents = mconcat <$> many (unQ <|> B.singleton <$> esc')
48−
49−-- | Recognizes a plain string literal, not containing quotes or brackets and
50−-- not containing the delimiter character.
51−plain :: Char -> Parser ByteString
52−plain delim = takeWhile1 (notInClass (delim:"\"{}"))
53−
54−-- Mutually recursive 'fmt' and 'delimit' separate out value formatting
55−-- from the subtleties of delimiting.
56−
57−-- | Format an array format item, using the delimiter character if the item is
58−-- itself an array.
59−fmt :: Char -> ArrayFormat -> ByteString
60−fmt = fmt' False
61−
62−-- | Format a list of array format items, inserting the appropriate delimiter
63−-- between them. When the items are arrays, they will be delimited with
64−-- commas; otherwise, they are delimited with the passed-in-delimiter.
65−delimit :: Char -> [ArrayFormat] -> ByteString
66−delimit _ [] = ""
67−delimit c [x] = fmt' True c x
68−delimit c (x:y:z) = (fmt' True c x `B.snoc` c') `mappend` delimit c (y:z)
69− where
70− c' | Array _ <- x = ','
71− | otherwise = c
72−
73−-- | Format an array format item, using the delimiter character if the item is
74−-- itself an array, optionally applying quoting rules. Creates copies for
75−-- safety when used in 'FromField' instances.
76−fmt' :: Bool -> Char -> ArrayFormat -> ByteString
77−fmt' quoting c x =
78− case x of
79− Array items -> '{' `B.cons` (delimit c items `B.snoc` '}')
80− Plain bytes -> B.copy bytes
81− Quoted q | quoting -> '"' `B.cons` (esc q `B.snoc` '"')
82− | otherwise -> B.copy q
83− -- NB: The 'snoc' and 'cons' functions always copy.
84−
85−-- | Escape a string according to Postgres double-quoted string format.
86−esc :: ByteString -> ByteString
87−esc = B.concatMap f
88− where
89− f '"' = "\\\""
90− f '\\' = "\\\\"
91− f c = B.singleton c
92− -- TODO: Implement easy performance improvements with unfoldr.
src/Database/PostgreSQL/Simple/BuiltinTypes.hsnew file+403
@@ -0,0 +1,403 @@
1+{-# LANGUAGE DeriveDataTypeable, OverloadedStrings #-}
2+
3+------------------------------------------------------------------------------
4+-- |
5+-- Module: Database.PostgreSQL.Simple.BuiltinTypes
6+-- Copyright: (c) 2011 Leon P Smith
7+-- License: BSD3
8+-- Maintainer: Leon P Smith <leon@melding-monads.com>
9+-- Stability: experimental
10+--
11+------------------------------------------------------------------------------
12+
13+-- Note that this file is generated by tools/GenBuiltinTypes.hs, and should
14+-- not be edited directly
15+
16+module Database.PostgreSQL.Simple.BuiltinTypes
17+ ( BuiltinType (..)
18+ , builtin2oid
19+ , oid2builtin
20+ , builtin2typname
21+ , oid2typname
22+ ) where
23+
24+import Data.Typeable
25+import Data.ByteString (ByteString)
26+import qualified Database.PostgreSQL.LibPQ as PQ
27+
28+data BuiltinType
29+ = Bool
30+ | Bytea
31+ | Char
32+ | Name
33+ | Int8
34+ | Int2
35+ | Int4
36+ | Regproc
37+ | Text
38+ | Oid
39+ | Tid
40+ | Xid
41+ | Cid
42+ | Xml
43+ | Point
44+ | Lseg
45+ | Path
46+ | Box
47+ | Polygon
48+ | Line
49+ | Cidr
50+ | Float4
51+ | Float8
52+ | Abstime
53+ | Reltime
54+ | Tinterval
55+ | Unknown
56+ | Circle
57+ | Money
58+ | Macaddr
59+ | Inet
60+ | Bpchar
61+ | Varchar
62+ | Date
63+ | Time
64+ | Timestamp
65+ | TimestampWithTimeZone
66+ | Interval
67+ | TimeWithTimeZone
68+ | Bit
69+ | Varbit
70+ | Numeric
71+ | Refcursor
72+ | Record
73+ | Void
74+ deriving (Eq, Ord, Enum, Bounded, Read, Show, Typeable)
75+
76+builtin2oid :: BuiltinType -> PQ.Oid
77+builtin2oid typ = PQ.Oid $ case typ of
78+ Bool -> 16
79+ Bytea -> 17
80+ Char -> 18
81+ Name -> 19
82+ Int8 -> 20
83+ Int2 -> 21
84+ Int4 -> 23
85+ Regproc -> 24
86+ Text -> 25
87+ Oid -> 26
88+ Tid -> 27
89+ Xid -> 28
90+ Cid -> 29
91+ Xml -> 142
92+ Point -> 600
93+ Lseg -> 601
94+ Path -> 602
95+ Box -> 603
96+ Polygon -> 604
97+ Line -> 628
98+ Cidr -> 650
99+ Float4 -> 700
100+ Float8 -> 701
101+ Abstime -> 702
102+ Reltime -> 703
103+ Tinterval -> 704
104+ Unknown -> 705
105+ Circle -> 718
106+ Money -> 790
107+ Macaddr -> 829
108+ Inet -> 869
109+ Bpchar -> 1042
110+ Varchar -> 1043
111+ Date -> 1082
112+ Time -> 1083
113+ Timestamp -> 1114
114+ TimestampWithTimeZone -> 1184
115+ Interval -> 1186
116+ TimeWithTimeZone -> 1266
117+ Bit -> 1560
118+ Varbit -> 1562
119+ Numeric -> 1700
120+ Refcursor -> 1790
121+ Record -> 2249
122+ Void -> 2278
123+
124+oid2builtin :: PQ.Oid -> Maybe BuiltinType
125+oid2builtin (PQ.Oid x) = case x of
126+ 16 -> Just Bool
127+ 17 -> Just Bytea
128+ 18 -> Just Char
129+ 19 -> Just Name
130+ 20 -> Just Int8
131+ 21 -> Just Int2
132+ 23 -> Just Int4
133+ 24 -> Just Regproc
134+ 25 -> Just Text
135+ 26 -> Just Oid
136+ 27 -> Just Tid
137+ 28 -> Just Xid
138+ 29 -> Just Cid
139+ 142 -> Just Xml
140+ 600 -> Just Point
141+ 601 -> Just Lseg
142+ 602 -> Just Path
143+ 603 -> Just Box
144+ 604 -> Just Polygon
145+ 628 -> Just Line
146+ 650 -> Just Cidr
147+ 700 -> Just Float4
148+ 701 -> Just Float8
149+ 702 -> Just Abstime
150+ 703 -> Just Reltime
151+ 704 -> Just Tinterval
152+ 705 -> Just Unknown
153+ 718 -> Just Circle
154+ 790 -> Just Money
155+ 829 -> Just Macaddr
156+ 869 -> Just Inet
157+ 1042 -> Just Bpchar
158+ 1043 -> Just Varchar
159+ 1082 -> Just Date
160+ 1083 -> Just Time
161+ 1114 -> Just Timestamp
162+ 1184 -> Just TimestampWithTimeZone
163+ 1186 -> Just Interval
164+ 1266 -> Just TimeWithTimeZone
165+ 1560 -> Just Bit
166+ 1562 -> Just Varbit
167+ 1700 -> Just Numeric
168+ 1790 -> Just Refcursor
169+ 2249 -> Just Record
170+ 2278 -> Just Void
171+ _ -> Nothing
172+
173+builtin2typname :: BuiltinType -> ByteString
174+builtin2typname typ = case typ of
175+ Bool -> bool
176+ Bytea -> bytea
177+ Char -> char
178+ Name -> name
179+ Int8 -> int8
180+ Int2 -> int2
181+ Int4 -> int4
182+ Regproc -> regproc
183+ Text -> text
184+ Oid -> oid
185+ Tid -> tid
186+ Xid -> xid
187+ Cid -> cid
188+ Xml -> xml
189+ Point -> point
190+ Lseg -> lseg
191+ Path -> path
192+ Box -> box
193+ Polygon -> polygon
194+ Line -> line
195+ Cidr -> cidr
196+ Float4 -> float4
197+ Float8 -> float8
198+ Abstime -> abstime
199+ Reltime -> reltime
200+ Tinterval -> tinterval
201+ Unknown -> unknown
202+ Circle -> circle
203+ Money -> money
204+ Macaddr -> macaddr
205+ Inet -> inet
206+ Bpchar -> bpchar
207+ Varchar -> varchar
208+ Date -> date
209+ Time -> time
210+ Timestamp -> timestamp
211+ TimestampWithTimeZone -> timestamptz
212+ Interval -> interval
213+ TimeWithTimeZone -> timetz
214+ Bit -> bit
215+ Varbit -> varbit
216+ Numeric -> numeric
217+ Refcursor -> refcursor
218+ Record -> record
219+ Void -> void
220+
221+oid2typname :: PQ.Oid -> Maybe ByteString
222+oid2typname (PQ.Oid x) = case x of
223+ 16 -> Just bool
224+ 17 -> Just bytea
225+ 18 -> Just char
226+ 19 -> Just name
227+ 20 -> Just int8
228+ 21 -> Just int2
229+ 23 -> Just int4
230+ 24 -> Just regproc
231+ 25 -> Just text
232+ 26 -> Just oid
233+ 27 -> Just tid
234+ 28 -> Just xid
235+ 29 -> Just cid
236+ 142 -> Just xml
237+ 600 -> Just point
238+ 601 -> Just lseg
239+ 602 -> Just path
240+ 603 -> Just box
241+ 604 -> Just polygon
242+ 628 -> Just line
243+ 650 -> Just cidr
244+ 700 -> Just float4
245+ 701 -> Just float8
246+ 702 -> Just abstime
247+ 703 -> Just reltime
248+ 704 -> Just tinterval
249+ 705 -> Just unknown
250+ 718 -> Just circle
251+ 790 -> Just money
252+ 829 -> Just macaddr
253+ 869 -> Just inet
254+ 1042 -> Just bpchar
255+ 1043 -> Just varchar
256+ 1082 -> Just date
257+ 1083 -> Just time
258+ 1114 -> Just timestamp
259+ 1184 -> Just timestamptz
260+ 1186 -> Just interval
261+ 1266 -> Just timetz
262+ 1560 -> Just bit
263+ 1562 -> Just varbit
264+ 1700 -> Just numeric
265+ 1790 -> Just refcursor
266+ 2249 -> Just record
267+ 2278 -> Just void
268+ _ -> Nothing
269+
270+bool :: ByteString
271+bool = "bool"
272+
273+bytea :: ByteString
274+bytea = "bytea"
275+
276+char :: ByteString
277+char = "char"
278+
279+name :: ByteString
280+name = "name"
281+
282+int8 :: ByteString
283+int8 = "int8"
284+
285+int2 :: ByteString
286+int2 = "int2"
287+
288+int4 :: ByteString
289+int4 = "int4"
290+
291+regproc :: ByteString
292+regproc = "regproc"
293+
294+text :: ByteString
295+text = "text"
296+
297+oid :: ByteString
298+oid = "oid"
299+
300+tid :: ByteString
301+tid = "tid"
302+
303+xid :: ByteString
304+xid = "xid"
305+
306+cid :: ByteString
307+cid = "cid"
308+
309+xml :: ByteString
310+xml = "xml"
311+
312+point :: ByteString
313+point = "point"
314+
315+lseg :: ByteString
316+lseg = "lseg"
317+
318+path :: ByteString
319+path = "path"
320+
321+box :: ByteString
322+box = "box"
323+
324+polygon :: ByteString
325+polygon = "polygon"
326+
327+line :: ByteString
328+line = "line"
329+
330+cidr :: ByteString
331+cidr = "cidr"
332+
333+float4 :: ByteString
334+float4 = "float4"
335+
336+float8 :: ByteString
337+float8 = "float8"
338+
339+abstime :: ByteString
340+abstime = "abstime"
341+
342+reltime :: ByteString
343+reltime = "reltime"
344+
345+tinterval :: ByteString
346+tinterval = "tinterval"
347+
348+unknown :: ByteString
349+unknown = "unknown"
350+
351+circle :: ByteString
352+circle = "circle"
353+
354+money :: ByteString
355+money = "money"
356+
357+macaddr :: ByteString
358+macaddr = "macaddr"
359+
360+inet :: ByteString
361+inet = "inet"
362+
363+bpchar :: ByteString
364+bpchar = "bpchar"
365+
366+varchar :: ByteString
367+varchar = "varchar"
368+
369+date :: ByteString
370+date = "date"
371+
372+time :: ByteString
373+time = "time"
374+
375+timestamp :: ByteString
376+timestamp = "timestamp"
377+
378+timestamptz :: ByteString
379+timestamptz = "timestamptz"
380+
381+interval :: ByteString
382+interval = "interval"
383+
384+timetz :: ByteString
385+timetz = "timetz"
386+
387+bit :: ByteString
388+bit = "bit"
389+
390+varbit :: ByteString
391+varbit = "varbit"
392+
393+numeric :: ByteString
394+numeric = "numeric"
395+
396+refcursor :: ByteString
397+refcursor = "refcursor"
398+
399+record :: ByteString
400+record = "record"
401+
402+void :: ByteString
403+void = "void"
src/Database/PostgreSQL/Simple/Compat.hs+8−24
@@ -1,24 +1,11 @@
11{-# LANGUAGE CPP #-}
2−-- | This is a module of its own, partly because it uses the CPP extension,
3−-- which doesn't play well with backslash-broken string literals.
2+-- | This is a module of its own, because it uses the CPP extension, which
3+-- doesn't play well with the regex string literal in Simple.hs .
44module Database.PostgreSQL.Simple.Compat
55 ( mask
6− , (<>)
7− , unsafeDupablePerformIO
8− , toByteString
9− , scientificBuilder
10− , toPico
11− , fromPico
126 ) where
137
148import qualified Control.Exception as E
15−import Data.ByteString (ByteString)
16−import Data.ByteString.Lazy (toStrict)
17−import Data.ByteString.Builder (Builder, toLazyByteString)
18−import Data.Text.Lazy.Builder.Scientific (scientificBuilder)
19−import System.IO.Unsafe (unsafeDupablePerformIO)
20−import Data.Fixed (Pico)
21−import Data.Fixed (Fixed(MkFixed))
229
2310-- | Like 'E.mask', but backported to base before version 4.3.0.
2411--
@@ -28,14 +15,11 @@ import Data.Fixed (Fixed(MkFixed))
2815-- 'withTransactionMode' function calls the restore callback only once, so we
2916-- don't need that polymorphism.
3017mask :: ((IO a -> IO a) -> IO b) -> IO b
18+#if MIN_VERSION_base(4,3,0)
3119mask io = E.mask $ \restore -> io restore
20+#else
21+mask io = do
22+ b <- E.blocked
23+ E.block $ io $ \m -> if b then m else E.unblock m
24+#endif
3225{-# INLINE mask #-}
33−
34−toByteString :: Builder -> ByteString
35−toByteString x = toStrict (toLazyByteString x)
36−
37−toPico :: Integer -> Pico
38−toPico = MkFixed
39−
40−fromPico :: Pico -> Integer
41−fromPico (MkFixed i) = i
src/Database/PostgreSQL/Simple/Copy.hsdeleted−269
@@ -1,269 +0,0 @@
1−{-# LANGUAGE CPP, DeriveDataTypeable #-}
2−
3−------------------------------------------------------------------------------
4−-- |
5−-- Module: Database.PostgreSQL.Simple.Copy
6−-- Copyright: (c) 2013 Leon P Smith
7−-- License: BSD3
8−-- Maintainer: Leon P Smith <leon@melding-monads.com>
9−-- Stability: experimental
10−--
11−-- mid-level support for COPY IN and COPY OUT. See
12−-- <https://www.postgresql.org/docs/9.5/static/sql-copy.html> for
13−-- more information.
14−--
15−-- To use this binding, first call 'copy' with an appropriate
16−-- query as documented in the link above. Then, in the case of a
17−-- @COPY TO STDOUT@ query, call 'getCopyData' repeatedly until it
18−-- returns 'CopyOutDone'. In the case of a @COPY FROM STDIN@
19−-- query, call 'putCopyData' repeatedly and then finish by calling
20−-- either 'putCopyEnd' to proceed or 'putCopyError' to abort.
21−--
22−-- You cannot issue another query on the same connection while a copy
23−-- is ongoing; this will result in an exception. It is harmless to
24−-- concurrently call @getNotification@ on a connection while it is in
25−-- a @CopyIn@ or @CopyOut@ state, however be aware that current versions
26−-- of the PostgreSQL backend will not deliver notifications to a client
27−-- while a transaction is ongoing.
28−--
29−------------------------------------------------------------------------------
30−
31−module Database.PostgreSQL.Simple.Copy
32− ( copy
33− , copy_
34− , CopyOutResult(..)
35− , foldCopyData
36− , getCopyData
37− , putCopyData
38− , putCopyEnd
39− , putCopyError
40− ) where
41−
42−import Control.Applicative
43−import Control.Concurrent
44−import Control.Exception ( throwIO )
45−import qualified Data.Attoparsec.ByteString.Char8 as P
46−import Data.Typeable(Typeable)
47−import Data.Int(Int64)
48−import qualified Data.ByteString.Char8 as B
49−import qualified Database.PostgreSQL.LibPQ as PQ
50−import Database.PostgreSQL.Simple
51−import Database.PostgreSQL.Simple.Types
52−import Database.PostgreSQL.Simple.Internal hiding (result, row)
53−
54−
55−-- | Issue a @COPY FROM STDIN@ or @COPY TO STDOUT@ query. In the former
56−-- case, the connection's state will change to @CopyIn@; in the latter,
57−-- @CopyOut@. The connection must be in the ready state in order
58−-- to call this function. Performs parameter substitution.
59−
60−copy :: ( ToRow params ) => Connection -> Query -> params -> IO ()
61−copy conn template qs = do
62− q <- formatQuery conn template qs
63− doCopy "Database.PostgreSQL.Simple.Copy.copy" conn template q
64−
65−
66−-- | Issue a @COPY FROM STDIN@ or @COPY TO STDOUT@ query. In the former
67−-- case, the connection's state will change to @CopyIn@; in the latter,
68−-- @CopyOut@. The connection must be in the ready state in order
69−-- to call this function. Does not perform parameter subsitution.
70−
71−copy_ :: Connection -> Query -> IO ()
72−copy_ conn (Query q) = do
73− doCopy "Database.PostgreSQL.Simple.Copy.copy_" conn (Query q) q
74−
75−doCopy :: B.ByteString -> Connection -> Query -> B.ByteString -> IO ()
76−doCopy funcName conn template q = do
77− result <- exec conn q
78− status <- PQ.resultStatus result
79− let errMsg msg = throwIO $ QueryError
80− (B.unpack funcName ++ " " ++ msg)
81− template
82− let err = errMsg $ show status
83− case status of
84− PQ.EmptyQuery -> err
85− PQ.CommandOk -> err
86− PQ.TuplesOk -> err
87− PQ.CopyOut -> return ()
88− PQ.CopyIn -> return ()
89− PQ.CopyBoth -> errMsg "COPY BOTH is not supported"
90− PQ.SingleTuple -> errMsg "single-row mode is not supported"
91− PQ.BadResponse -> throwResultError funcName result status
92− PQ.NonfatalError -> throwResultError funcName result status
93− PQ.FatalError -> throwResultError funcName result status
94−
95−data CopyOutResult
96− = CopyOutRow !B.ByteString -- ^ Data representing either exactly
97− -- one row of the result, or header
98− -- or footer data depending on format.
99− | CopyOutDone {-# UNPACK #-} !Int64 -- ^ No more rows, and a count of the
100− -- number of rows returned.
101− deriving (Eq, Typeable, Show)
102−
103−
104−-- | Fold over @COPY TO STDOUT@ query passing each copied row to an accumulator
105−-- and calling a post-process at the end. A connection must be in the
106−-- @CopyOut@ state in order to call this function.
107−--
108−-- __Example__
109−--
110−-- > (acc, count) <- foldCopyData conn
111−-- > (\acc row -> return (row:acc))
112−-- > (\acc count -> return (acc, count))
113−-- > []
114−
115−foldCopyData
116− :: Connection -- ^ Database connection
117− -> (a -> B.ByteString -> IO a) -- ^ Accumulate one row of the result
118− -> (a -> Int64 -> IO b) -- ^ Post-process accumulator with a count of rows
119− -> a -- ^ Initial accumulator
120− -> IO b -- ^ Result
121−foldCopyData conn f g !acc = do
122− result <- getCopyData conn
123− case result of
124− CopyOutRow row -> f acc row >>= foldCopyData conn f g
125− CopyOutDone count -> g acc count
126−
127−
128−-- | Retrieve some data from a @COPY TO STDOUT@ query. A connection
129−-- must be in the @CopyOut@ state in order to call this function. If this
130−-- returns a 'CopyOutRow', the connection remains in the @CopyOut@ state,
131−-- if it returns 'CopyOutDone', then the connection has reverted to the
132−-- ready state.
133−
134−getCopyData :: Connection -> IO CopyOutResult
135−getCopyData conn = withConnection conn loop
136− where
137− funcName = "Database.PostgreSQL.Simple.Copy.getCopyData"
138− loop pqconn = do
139−#if defined(mingw32_HOST_OS)
140− row <- PQ.getCopyData pqconn False
141−#else
142− row <- PQ.getCopyData pqconn True
143−#endif
144− case row of
145− PQ.CopyOutRow rowdata -> return $! CopyOutRow rowdata
146− PQ.CopyOutDone -> CopyOutDone <$> getCopyCommandTag funcName pqconn
147−#if defined(mingw32_HOST_OS)
148− PQ.CopyOutWouldBlock -> do
149− fail (B.unpack funcName ++ ": the impossible happened")
150−#else
151− PQ.CopyOutWouldBlock -> do
152− mfd <- PQ.socket pqconn
153− case mfd of
154− Nothing -> throwIO (fdError funcName)
155− Just fd -> do
156− threadWaitRead fd
157− _ <- PQ.consumeInput pqconn
158− loop pqconn
159−#endif
160− PQ.CopyOutError -> do
161− mmsg <- PQ.errorMessage pqconn
162− throwIO SqlError {
163− sqlState = "",
164− sqlExecStatus = FatalError,
165− sqlErrorMsg = maybe "" id mmsg,
166− sqlErrorDetail = "",
167− sqlErrorHint = funcName
168− }
169−
170−
171−-- | Feed some data to a @COPY FROM STDIN@ query. Note that
172−-- the data does not need to represent a single row, or even an
173−-- integral number of rows. The net result of
174−-- @putCopyData conn a >> putCopyData conn b@
175−-- is the same as @putCopyData conn c@ whenever @c == BS.append a b@.
176−--
177−-- A connection must be in the @CopyIn@ state in order to call this
178−-- function, otherwise a 'SqlError' exception will result. The
179−-- connection remains in the @CopyIn@ state after this function
180−-- is called.
181−
182−putCopyData :: Connection -> B.ByteString -> IO ()
183−putCopyData conn dat = withConnection conn $ \pqconn -> do
184− doCopyIn funcName (\c -> PQ.putCopyData c dat) pqconn
185− where
186− funcName = "Database.PostgreSQL.Simple.Copy.putCopyData"
187−
188−
189−-- | Completes a @COPY FROM STDIN@ query. Returns the number of rows
190−-- processed.
191−--
192−-- A connection must be in the @CopyIn@ state in order to call this
193−-- function, otherwise a 'SqlError' exception will result. The
194−-- connection's state changes back to ready after this function
195−-- is called.
196−
197−putCopyEnd :: Connection -> IO Int64
198−putCopyEnd conn = withConnection conn $ \pqconn -> do
199− doCopyIn funcName (\c -> PQ.putCopyEnd c Nothing) pqconn
200− getCopyCommandTag funcName pqconn
201− where
202− funcName = "Database.PostgreSQL.Simple.Copy.putCopyEnd"
203−
204−
205−-- | Aborts a @COPY FROM STDIN@ query. The string parameter is simply
206−-- an arbitrary error message that may show up in the PostgreSQL
207−-- server's log.
208−--
209−-- A connection must be in the @CopyIn@ state in order to call this
210−-- function, otherwise a 'SqlError' exception will result. The
211−-- connection's state changes back to ready after this function
212−-- is called.
213−
214−putCopyError :: Connection -> B.ByteString -> IO ()
215−putCopyError conn err = withConnection conn $ \pqconn -> do
216− doCopyIn funcName (\c -> PQ.putCopyEnd c (Just err)) pqconn
217− consumeResults pqconn
218− where
219− funcName = "Database.PostgreSQL.Simple.Copy.putCopyError"
220−
221−
222−doCopyIn :: B.ByteString -> (PQ.Connection -> IO PQ.CopyInResult)
223− -> PQ.Connection -> IO ()
224−doCopyIn funcName action = loop
225− where
226− loop pqconn = do
227− stat <- action pqconn
228− case stat of
229− PQ.CopyInOk -> return ()
230− PQ.CopyInError -> do
231− mmsg <- PQ.errorMessage pqconn
232− throwIO SqlError {
233− sqlState = "",
234− sqlExecStatus = FatalError,
235− sqlErrorMsg = maybe "" id mmsg,
236− sqlErrorDetail = "",
237− sqlErrorHint = funcName
238− }
239− PQ.CopyInWouldBlock -> do
240− mfd <- PQ.socket pqconn
241− case mfd of
242− Nothing -> throwIO (fdError funcName)
243− Just fd -> do
244− threadWaitWrite fd
245− loop pqconn
246−{-# INLINE doCopyIn #-}
247−
248−getCopyCommandTag :: B.ByteString -> PQ.Connection -> IO Int64
249−getCopyCommandTag funcName pqconn = do
250− result <- maybe (fail errCmdStatus) return =<< PQ.getResult pqconn
251− cmdStat <- maybe (fail errCmdStatus) return =<< PQ.cmdStatus result
252− consumeResults pqconn
253− let rowCount = P.string "COPY " *> (P.decimal <* P.endOfInput)
254− case P.parseOnly rowCount cmdStat of
255− Left _ -> do mmsg <- PQ.errorMessage pqconn
256− fail $ errCmdStatusFmt
257− ++ maybe "" (\msg -> "\nConnection error: "++B.unpack msg) mmsg
258− Right n -> return $! n
259− where
260− errCmdStatus = B.unpack funcName ++ ": failed to fetch command status"
261− errCmdStatusFmt = B.unpack funcName ++ ": failed to parse command status"
262−
263−
264−consumeResults :: PQ.Connection -> IO ()
265−consumeResults pqconn = do
266− mres <- PQ.getResult pqconn
267− case mres of
268− Nothing -> return ()
269− Just _ -> consumeResults pqconn
src/Database/PostgreSQL/Simple/Cursor.hsdeleted−98
@@ -1,98 +0,0 @@
1−{-# LANGUAGE OverloadedStrings #-}
2−
3−------------------------------------------------------------------------------
4−-- |
5−-- Module: Database.PostgreSQL.Simple.Cursor
6−-- Copyright: (c) 2011-2012 Leon P Smith
7−-- (c) 2017 Bardur Arantsson
8−-- License: BSD3
9−-- Maintainer: Leon P Smith <leon@melding-monads.com>
10−--
11−------------------------------------------------------------------------------
12−
13−module Database.PostgreSQL.Simple.Cursor
14− (
15− -- * Types
16− Cursor
17− -- * Cursor management
18− , declareCursor
19− , closeCursor
20− -- * Folding over rows from a cursor
21− , foldForward
22− , foldForwardWithParser
23− ) where
24−
25−import Data.ByteString.Builder (intDec)
26−import Control.Applicative ((<$>))
27−import Control.Exception as E
28−import Control.Monad (unless, void)
29−import Data.Monoid (mconcat)
30−import Database.PostgreSQL.Simple.Compat ((<>), toByteString)
31−import Database.PostgreSQL.Simple.FromRow (FromRow(..))
32−import Database.PostgreSQL.Simple.Types (Query(..))
33−import Database.PostgreSQL.Simple.Internal as Base hiding (result, row)
34−import Database.PostgreSQL.Simple.Internal.PQResultUtils
35−import Database.PostgreSQL.Simple.Transaction
36−import qualified Database.PostgreSQL.LibPQ as PQ
37−
38−-- | Cursor within a transaction.
39−data Cursor = Cursor !Query !Connection
40−
41−-- | Declare a temporary cursor. The cursor is given a
42−-- unique name for the given connection.
43−declareCursor :: Connection -> Query -> IO Cursor
44−declareCursor conn q = do
45− name <- newTempName conn
46− void $ execute_ conn $ mconcat ["DECLARE ", name, " NO SCROLL CURSOR FOR ", q]
47− return $ Cursor name conn
48−
49−-- | Close the given cursor.
50−closeCursor :: Cursor -> IO ()
51−closeCursor (Cursor name conn) =
52− (void $ execute_ conn ("CLOSE " <> name)) `E.catch` \ex ->
53− -- Don't throw exception if CLOSE failed because the transaction is
54− -- aborted. Otherwise, it will throw away the original error.
55− unless (isFailedTransactionError ex) $ throwIO ex
56−
57−-- | Fold over a chunk of rows from the given cursor, calling the
58−-- supplied fold-like function on each row as it is received. In case
59−-- the cursor is exhausted, a 'Left' value is returned, otherwise a
60−-- 'Right' value is returned.
61−foldForwardWithParser :: Cursor -> RowParser r -> Int -> (a -> r -> IO a) -> a -> IO (Either a a)
62−foldForwardWithParser (Cursor name conn) parser chunkSize f a0 = do
63− let q = "FETCH FORWARD "
64− <> (toByteString $ intDec chunkSize)
65− <> " FROM "
66− <> fromQuery name
67− result <- exec conn q
68− status <- PQ.resultStatus result
69− case status of
70− PQ.TuplesOk -> do
71− nrows <- PQ.ntuples result
72− ncols <- PQ.nfields result
73− if nrows > 0
74− then do
75− let inner a row = do
76− x <- getRowWith parser row ncols conn result
77− f a x
78− Right <$> foldM' inner a0 0 (nrows - 1)
79− else
80− return $ Left a0
81− _ -> throwResultError "foldForwardWithParser" result status
82−
83−-- | Fold over a chunk of rows, calling the supplied fold-like function
84−-- on each row as it is received. In case the cursor is exhausted,
85−-- a 'Left' value is returned, otherwise a 'Right' value is returned.
86−foldForward :: FromRow r => Cursor -> Int -> (a -> r -> IO a) -> a -> IO (Either a a)
87−foldForward cursor = foldForwardWithParser cursor fromRow
88−
89−
90−foldM' :: (Ord n, Num n) => (a -> n -> IO a) -> a -> n -> n -> IO a
91−foldM' f a lo hi = loop a lo
92− where
93− loop x !n
94− | n > hi = return x
95− | otherwise = do
96− x' <- f x n
97− loop x' (n+1)
98−{-# INLINE foldM' #-}
src/Database/PostgreSQL/Simple/Errors.hsdeleted−140
@@ -1,140 +0,0 @@
1−{-# LANGUAGE DeriveDataTypeable #-}
2−{-# LANGUAGE OverloadedStrings #-}
3−{-# LANGUAGE RecordWildCards #-}
4−------------------------------------------------------------------------------
5−-- |
6−-- Module: Database.PostgreSQL.Simple.Errors
7−-- Copyright: (c) 2012-2013 Leonid Onokhov, Joey Adams
8−-- License: BSD3
9−-- Maintainer: Leon P Smith <leon@melding-monads.com>
10−-- Stability: experimental
11−--
12−-- | Module for parsing errors from postgresql error messages.
13−-- Currently only parses integrity violation errors (class 23).
14−--
15−-- /Note: Success of parsing may depend on language settings./
16−----------------------------------------------------------
17−module Database.PostgreSQL.Simple.Errors
18− ( ConstraintViolation(..)
19− , constraintViolation
20− , constraintViolationE
21− , catchViolation
22− , isSerializationError
23− , isNoActiveTransactionError
24− , isFailedTransactionError
25− )
26− where
27−
28−import Control.Exception as E
29−
30−import Data.Attoparsec.ByteString.Char8
31−import Data.ByteString (ByteString)
32−import Data.Typeable
33−
34−import Database.PostgreSQL.Simple.Internal
35−
36−-- Examples of parsed error messages
37−--
38−-- `ERROR: new row for relation "users" violates check
39−-- constraint "user_kind_check"`
40−--
41−-- `ERROR: insert or update on table "user_group_map" violates foreign key
42−-- constraint "user_id"`
43−--
44−-- `ERROR: null value in column "login" violates not-null constraint`
45−--
46−-- `ERROR: duplicate key value violates unique constraint "users_login_key"`
47−
48−data ConstraintViolation
49− = NotNullViolation ByteString
50− -- ^ The field is a column name
51− | ForeignKeyViolation ByteString ByteString
52− -- ^ Table name and name of violated constraint
53− | UniqueViolation ByteString
54− -- ^ Name of violated constraint
55− | CheckViolation ByteString ByteString
56− -- ^ Relation name (usually table), constraint name
57− | ExclusionViolation ByteString
58− -- ^ Name of the exclusion violation constraint
59− deriving (Show, Eq, Ord, Typeable)
60−
61−-- Default instance should be enough
62−instance Exception ConstraintViolation where
63− toException = postgresqlExceptionToException
64− fromException = postgresqlExceptionFromException
65−
66−
67−-- | Tries to convert 'SqlError' to 'ConstrainViolation', checks sqlState and
68−-- succeeds only if able to parse sqlErrorMsg.
69−--
70−-- > createUser = handleJust constraintViolation handler $ execute conn ...
71−-- > where
72−-- > handler (UniqueViolation "user_login_key") = ...
73−-- > handler _ = ...
74−constraintViolation :: SqlError -> Maybe ConstraintViolation
75−constraintViolation e =
76− case sqlState e of
77− "23502" -> NotNullViolation <$> parseMaybe parseQ1 msg
78− "23503" -> uncurry ForeignKeyViolation <$> parseMaybe parseQ2 msg
79− "23505" -> UniqueViolation <$> parseMaybe parseQ1 msg
80− "23514" -> uncurry CheckViolation <$> parseMaybe parseQ2 msg
81− "23P01" -> ExclusionViolation <$> parseMaybe parseQ1 msg
82− _ -> Nothing
83− where msg = sqlErrorMsg e
84−
85−
86−-- | Like constraintViolation, but also packs original SqlError.
87−--
88−-- > createUser = handleJust constraintViolationE handler $ execute conn ...
89−-- > where
90−-- > handler (_, UniqueViolation "user_login_key") = ...
91−-- > handler (e, _) = throwIO e
92−--
93−constraintViolationE :: SqlError -> Maybe (SqlError, ConstraintViolation)
94−constraintViolationE e = fmap ((,) e) $ constraintViolation e
95−
96−-- | Catches SqlError, tries to convert to ConstraintViolation, re-throws
97−-- on fail. Provides alternative interface to 'E.handleJust'
98−--
99−-- > createUser = catchViolation catcher $ execute conn ...
100−-- > where
101−-- > catcher _ (UniqueViolation "user_login_key") = ...
102−-- > catcher e _ = throwIO e
103−catchViolation :: (SqlError -> ConstraintViolation -> IO a) -> IO a -> IO a
104−catchViolation f m = E.catch m
105− (\e -> maybe (throwIO e) (f e) $ constraintViolation e)
106−
107−-- Parsers just try to extract quoted strings from error messages, number
108−-- of quoted strings depend on error type.
109−scanTillQuote :: Parser ByteString
110−scanTillQuote = scan False go
111− where go True _ = Just False -- escaped character
112− go False '"' = Nothing -- end parse
113− go False '\\' = Just True -- next one is escaped
114− go _ _ = Just False
115−
116−parseQ1 :: Parser ByteString
117−parseQ1 = scanTillQuote *> char '"' *> scanTillQuote <* char '"'
118−
119−parseQ2 :: Parser (ByteString, ByteString)
120−parseQ2 = (,) <$> parseQ1 <*> parseQ1
121−
122−parseMaybe :: Parser a -> ByteString -> Maybe a
123−parseMaybe p b = either (const Nothing) Just $ parseOnly p b
124−
125−------------------------------------------------------------------------
126−-- Error predicates
127−--
128−-- https://www.postgresql.org/docs/9.5/static/errcodes-appendix.html
129−
130−isSerializationError :: SqlError -> Bool
131−isSerializationError = isSqlState "40001"
132−
133−isNoActiveTransactionError :: SqlError -> Bool
134−isNoActiveTransactionError = isSqlState "25P01"
135−
136−isFailedTransactionError :: SqlError -> Bool
137−isFailedTransactionError = isSqlState "25P02"
138−
139−isSqlState :: ByteString -> SqlError -> Bool
140−isSqlState s SqlError{..} = sqlState == s
src/Database/PostgreSQL/Simple/FromField.hs+139−548
@@ -1,104 +1,35 @@
1−{-# LANGUAGE CPP, DeriveDataTypeable, DeriveFunctor #-}
2−{-# LANGUAGE FlexibleInstances, TypeSynonymInstances #-}
3−{-# LANGUAGE PatternGuards, ScopedTypeVariables #-}
4−{-# LANGUAGE RecordWildCards #-}
5−{-# LANGUAGE PolyKinds #-}
6−
7−{- |
8−Module: Database.PostgreSQL.Simple.FromField
9−Copyright: (c) 2011 MailRank, Inc.
10− (c) 2011-2013 Leon P Smith
11−License: BSD3
12−Maintainer: Leon P Smith <leon@melding-monads.com>
13−Stability: experimental
14−
15−The 'FromField' typeclass, for converting a single value in a row
16−returned by a SQL query into a more useful Haskell representation.
17−Note that each instance of 'FromField' is documented by a list of
18−compatible postgresql types.
19−
20−A Haskell numeric type is considered to be compatible with all
21−PostgreSQL numeric types that are less accurate than it. For instance,
22−the Haskell 'Double' type is compatible with the PostgreSQL's 32-bit
23−@int@ type because it can represent a @int@ exactly. On the other hand,
24−since a 'Double' might lose precision if representing PostgreSQL's 64-bit
25−@bigint@, the two are /not/ considered compatible.
26−
27−Note that the 'Float' and 'Double' instances use attoparsec's 'double'
28−conversion routine, which sacrifices some accuracy for speed. If you
29−need accuracy, consider first converting data to a 'Scientific' or 'Rational'
30−type, and then converting to a floating-point type. If you are defining
31−your own 'Database.PostgreSQL.Simple.FromRow.FromRow' instances, this can be
32−achieved simply by
33−@'fromRational' '<$>' 'Database.PostgreSQL.Simple.FromRow.field'@, although
34−this idiom is additionally compatible with PostgreSQL's @int8@ and @numeric@
35−types. If this is unacceptable, you may find
36−'Database.PostgreSQL.Simple.FromRow.fieldWith' useful.
37−
38−Also note that while converting to a 'Double' through the 'Scientific' type
39−is likely somewhat faster than converting through the 'Rational' type,
40−the 'Scientific' type has no way to represent @NaN@ and @±Infinity@ values.
41−Thus, if you need precision conversion of regular floating point values
42−and the possibility of receiving these special values from the backend,
43−stick with 'Rational'.
44−
45−Because 'FromField' is a typeclass, one may provide conversions to
46−additional Haskell types without modifying postgresql-simple. This is
47−particularly useful for supporting PostgreSQL types that postgresql-simple
48−does not support out-of-box. Here's an example of what such an instance
49−might look like for a UUID type that implements the @Read@ class:
50−
51−@
52−import Data.UUID ( UUID )
53−import Database.PostgreSQL.Simple.FromField
54− ( FromField (fromField) , typeOid, returnError, ResultError (..) )
55−import Database.PostgreSQL.Simple.TypeInfo.Static (typoid, uuid)
56−import qualified Data.ByteString.Char8 as B
57−
58−instance FromField UUID where
59− fromField f mdata =
60− if typeOid f /= typoid uuid
61− then returnError Incompatible f \"\"
62− else case B.unpack \`fmap\` mdata of
63− Nothing -> returnError UnexpectedNull f \"\"
64− Just dat ->
65− case [ x | (x,t) <- reads dat, (\"\",\"\") <- lex t ] of
66− [x] -> return x
67− _ -> returnError ConversionFailed f dat
68−@
69−
70−Note that because PostgreSQL's @uuid@ type is built into postgres and is
71−not provided by an extension, the 'typeOid' of @uuid@ does not change and
72−thus we can examine it directly. One could hard-code the type oid, or
73−obtain it by other means, but in this case we simply pull it out of the
74−static table provided by postgresql-simple.
75−
76−On the other hand if the type is provided by an extension, such as
77−@PostGIS@ or @hstore@, then the 'typeOid' is not stable and can vary from
78−database to database. In this case it is recommended that FromField
79−instances use 'typename' instead.
80−
81−-}
82−
1+{-# LANGUAGE CPP, DeriveDataTypeable, DeriveFunctor, FlexibleInstances #-}
2+{-# LANGUAGE PatternGuards, ScopedTypeVariables #-}
3+------------------------------------------------------------------------------
4+-- |
5+-- Module: Database.PostgreSQL.Simple.FromField
6+-- Copyright: (c) 2011 MailRank, Inc.
7+-- (c) 2011 Leon P Smith
8+-- License: BSD3
9+-- Maintainer: Leon P Smith <leon@melding-monads.com>
10+-- Stability: experimental
11+-- Portability: portable
12+--
13+-- The 'Result' typeclass, for converting a single value in a row
14+-- returned by a SQL query into a more useful Haskell representation.
15+--
16+-- A Haskell numeric type is considered to be compatible with all
17+-- PostgreSQL numeric types that are less accurate than it. For instance,
18+-- the Haskell 'Double' type is compatible with the PostgreSQL's 32-bit
19+-- @Int@ type because it can represent a @Int@ exactly. On the other hand,
20+-- since a 'Double' might lose precision if representing a 64-bit @BigInt@,
21+-- the two are /not/ considered compatible.
22+--
23+------------------------------------------------------------------------------
8324
8425module Database.PostgreSQL.Simple.FromField
8526 (
8627 FromField(..)
87− , FieldParser
88− , Conversion()
89−
90− , runConversion
91− , conversionMap
92− , conversionError
9328 , ResultError(..)
9429 , returnError
9530
9631 , Field
9732 , typename
98− , TypeInfo(..)
99− , Attribute(..)
100− , typeInfo
101− , typeInfoByOid
10233 , name
10334 , tableOid
10435 , tableColumn
@@ -106,74 +37,52 @@ module Database.PostgreSQL.Simple.FromField
10637 , typeOid
10738 , PQ.Oid(..)
10839 , PQ.Format(..)
109− , pgArrayFieldParser
110− , attoFieldParser
111−
112− , optionalField
113− , fromJSONField
114− , fromFieldJSONByteString
11540 ) where
11641
11742#include "MachDeps.h"
11843
119−import Control.Applicative ( Const(Const), (<|>), (<$>), pure, (*>), (<*) )
120−import Control.Concurrent.MVar (MVar, newMVar)
121−import Control.Exception (Exception (toException, fromException))
122−import qualified Data.Aeson as JSON
123−import Data.Attoparsec.ByteString.Char8 hiding (Result)
44+import Control.Applicative
45+ ( Applicative, (<|>), (<$>), (<*>), (<*), pure )
46+import Control.Exception (SomeException(..), Exception)
47+import Data.Attoparsec.Char8 hiding (Result)
48+import Data.Bits ((.&.), (.|.), shiftL)
12449import Data.ByteString (ByteString)
12550import qualified Data.ByteString.Char8 as B
126−import Data.Functor.Identity (Identity(Identity))
12751import Data.Int (Int16, Int32, Int64)
128−import Data.IORef (IORef, newIORef)
52+import Data.List (foldl')
12953import Data.Ratio (Ratio)
130−import Data.Time.Compat ( UTCTime, ZonedTime, LocalTime, Day, TimeOfDay, CalendarDiffTime )
54+import Data.Time.Calendar (Day, fromGregorian)
55+import Data.Time.Clock (UTCTime)
56+import Data.Time.Format (parseTime)
57+import Data.Time.LocalTime (TimeOfDay, makeTimeOfDayValid)
13158import Data.Typeable (Typeable, typeOf)
132−import Data.Vector (Vector)
133−import Data.Vector.Mutable (IOVector)
134−import qualified Data.Vector as V
59+import Data.Word (Word64)
13560import Database.PostgreSQL.Simple.Internal
136−import Database.PostgreSQL.Simple.Compat
61+import Database.PostgreSQL.Simple.BuiltinTypes
13762import Database.PostgreSQL.Simple.Ok
138−import Database.PostgreSQL.Simple.Types
139−import Database.PostgreSQL.Simple.TypeInfo as TI
140−import qualified Database.PostgreSQL.Simple.TypeInfo.Static as TI
141−import Database.PostgreSQL.Simple.Time
142−import Database.PostgreSQL.Simple.Arrays as Arrays
63+import Database.PostgreSQL.Simple.Types (Binary(..), Null(..))
14364import qualified Database.PostgreSQL.LibPQ as PQ
65+import System.IO.Unsafe (unsafePerformIO)
66+import System.Locale (defaultTimeLocale)
14467import qualified Data.ByteString as SB
14568import qualified Data.ByteString.Char8 as B8
14669import qualified Data.ByteString.Lazy as LB
14770import qualified Data.Text as ST
14871import qualified Data.Text.Encoding as ST
14972import qualified Data.Text.Lazy as LT
150−import Data.CaseInsensitive (CI)
151−import qualified Data.CaseInsensitive as CI
152−import Data.UUID.Types (UUID)
153−import qualified Data.UUID.Types as UUID
154−import Data.Scientific (Scientific)
155−import GHC.Real (infinity, notANumber)
156−
157−import qualified Data.Aeson.Types as JSON
15873
15974-- | Exception thrown if conversion from a SQL value to a Haskell
16075-- value fails.
16176data ResultError = Incompatible { errSQLType :: String
162− , errSQLTableOid :: Maybe PQ.Oid
163− , errSQLField :: String
16477 , errHaskellType :: String
16578 , errMessage :: String }
16679 -- ^ The SQL and Haskell types are not compatible.
16780 | UnexpectedNull { errSQLType :: String
168− , errSQLTableOid :: Maybe PQ.Oid
169− , errSQLField :: String
17081 , errHaskellType :: String
17182 , errMessage :: String }
17283 -- ^ A SQL @NULL@ was encountered when the Haskell
17384 -- type did not permit it.
17485 | ConversionFailed { errSQLType :: String
175− , errSQLTableOid :: Maybe PQ.Oid
176− , errSQLField :: String
17786 , errHaskellType :: String
17887 , errMessage :: String }
17988 -- ^ The SQL value could not be parsed, or could not
@@ -182,489 +91,177 @@ data ResultError = Incompatible { errSQLType :: String
18291 -- between metadata and actual data in a row).
18392 deriving (Eq, Show, Typeable)
18493
185−instance Exception ResultError where
186− toException = postgresqlExceptionToException
187− fromException = postgresqlExceptionFromException
188−
189−left :: Exception a => a -> Conversion b
190−left = conversionError
94+instance Exception ResultError
19195
192−type FieldParser a = Field -> Maybe ByteString -> Conversion a
96+left :: Exception a => a -> Ok b
97+left = Errors . (:[]) . SomeException
19398
19499-- | A type that may be converted from a SQL type.
195100class FromField a where
196− fromField :: FieldParser a
101+ fromField :: Field -> Maybe ByteString -> Ok a
197102 -- ^ Convert a SQL value to a Haskell value.
198103 --
199104 -- Returns a list of exceptions if the conversion fails. In the case of
200105 -- library instances, this will usually be a single 'ResultError', but
201106 -- may be a 'UnicodeException'.
202107 --
203− -- Note that retaining any reference to the 'Field' argument causes
204− -- the entire @LibPQ.'PQ.Result'@ to be retained. Thus, implementations
205− -- of 'fromField' should return results that do not refer to this value
206− -- after the result have been evaluated to WHNF.
108+ -- Implementations of 'fromField' should not retain any references to
109+ -- the 'Field' nor the 'ByteString' arguments after the result has
110+ -- been evaluated to WHNF. Such a reference causes the entire
111+ -- @LibPQ.'PQ.Result'@ to be retained.
207112 --
208− -- Note that as of @postgresql-simple-0.4.0.0@, the 'ByteString' value
209− -- has already been copied out of the @LibPQ.'PQ.Result'@ before it has
210− -- been passed to 'fromField'. This is because for short strings, it's
211− -- cheaper to copy the string than to set up a finalizer.
212−
213−-- | Returns the data type name. This is the preferred way of identifying
214−-- types that do not have a stable type oid, such as types provided by
215−-- extensions to PostgreSQL.
216−--
217−-- More concretely, it returns the @typname@ column associated with the
218−-- type oid in the @pg_type@ table. First, postgresql-simple will check
219−-- the built-in, static table. If the type oid is not there,
220−-- postgresql-simple will check a per-connection cache, and then
221−-- finally query the database's meta-schema.
222−
223−typename :: Field -> Conversion ByteString
224−typename field = typname <$> typeInfo field
225−
226−typeInfo :: Field -> Conversion TypeInfo
227−typeInfo Field{..} = Conversion $ \conn -> do
228− Ok <$> (getTypeInfo conn typeOid)
229−
230−typeInfoByOid :: PQ.Oid -> Conversion TypeInfo
231−typeInfoByOid oid = Conversion $ \conn -> do
232− Ok <$> (getTypeInfo conn oid)
233−
234−-- | Returns the name of the column. This is often determined by a table
235−-- definition, but it can be set using an @as@ clause.
236−
237−name :: Field -> Maybe ByteString
238−name Field{..} = unsafeDupablePerformIO (PQ.fname result column)
113+ -- For example, the instance for 'ByteString' uses 'B.copy' to avoid
114+ -- such a reference, and that using bytestring functions such as 'B.drop'
115+ -- and 'B.takeWhile' alone will also trigger this memory leak.
239116
240−-- | Returns the name of the object id of the @table@ associated with the
241−-- column, if any. Returns 'Nothing' when there is no such table;
242−-- for example a computed column does not have a table associated with it.
243−-- Analogous to libpq's @PQftable@.
117+instance (FromField a) => FromField (Maybe a) where
118+ fromField _ Nothing = pure Nothing
119+ fromField f bs = Just <$> fromField f bs
244120
245−tableOid :: Field -> Maybe PQ.Oid
246−tableOid Field{..} = toMaybeOid (unsafeDupablePerformIO (PQ.ftable result column))
247− where
248− toMaybeOid x
249− = if x == PQ.invalidOid
250− then Nothing
251− else Just x
252−
253−-- | If the column has a table associated with it, this returns the
254−-- number of the associated table column. Table columns have
255−-- nonzero numbers. Zero is returned if the specified column is not
256−-- a simple reference to a table column, or when using pre-3.0
257−-- protocol. Analogous to libpq's @PQftablecol@.
258−
259−tableColumn :: Field -> Int
260−tableColumn Field{..} = fromCol (unsafeDupablePerformIO (PQ.ftablecol result column))
261− where
262− fromCol (PQ.Col x) = fromIntegral x
263−
264−-- | This returns whether the data was returned in a binary or textual format.
265−-- Analogous to libpq's @PQfformat@.
266−
267−format :: Field -> PQ.Format
268−format Field{..} = unsafeDupablePerformIO (PQ.fformat result column)
269−
270−-- | void
271−instance FromField () where
272− fromField f _bs
273− | typeOid f /= TI.voidOid = returnError Incompatible f ""
274− | otherwise = pure ()
275−
276−instance (FromField a) => FromField (Const a b) where
277− fromField f bs = Const <$> fromField f bs
278−
279−instance (FromField a) => FromField (Identity a) where
280− fromField f bs = Identity <$> fromField f bs
281−
282−-- | For dealing with null values. Compatible with any postgresql type
283−-- compatible with type @a@. Note that the type is not checked if
284−-- the value is null, although it is inadvisable to rely on this
285−-- behavior.
286−instance FromField a => FromField (Maybe a) where
287− fromField = optionalField fromField
288−
289−-- | For dealing with SQL @null@ values outside of the 'FromField' class.
290−-- Alternatively, one could use 'Control.Applicative.optional', but that
291−-- also turns type and conversion errors into 'Nothing', whereas this is
292−-- more specific and turns only @null@ values into 'Nothing'.
293−
294−optionalField :: FieldParser a -> FieldParser (Maybe a)
295−optionalField p f mv =
296− case mv of
297− Nothing -> pure Nothing
298− Just _ -> Just <$> p f mv
299−{-# INLINE optionalField #-}
300−
301−-- | compatible with any data type, but the value must be null
302121instance FromField Null where
303122 fromField _ Nothing = pure Null
304123 fromField f (Just _) = returnError ConversionFailed f "data is not null"
305124
306−-- | bool
307125instance FromField Bool where
308126 fromField f bs
309− | typeOid f /= TI.boolOid = returnError Incompatible f ""
127+ | typeOid f /= builtin2oid Bool = returnError Incompatible f ""
310128 | bs == Nothing = returnError UnexpectedNull f ""
311129 | bs == Just "t" = pure True
312130 | bs == Just "f" = pure False
313131 | otherwise = returnError ConversionFailed f ""
314132
315−-- | \"char\", bpchar
316−instance FromField Char where
317− fromField f bs0 =
318− if (eq TI.charOid \/ eq TI.bpcharOid) (typeOid f)
319− then case bs0 of
320− Nothing -> returnError UnexpectedNull f ""
321− Just bs -> if B.length bs /= 1
322− then returnError ConversionFailed f "length not 1"
323− else return $! (B.head bs)
324− else returnError Incompatible f ""
325−
326−-- | int2
327133instance FromField Int16 where
328− fromField = attoFieldParser ok16 $ signed decimal
134+ fromField = atto ok16 $ signed decimal
329135
330−-- | int2, int4
331136instance FromField Int32 where
332− fromField = attoFieldParser ok32 $ signed decimal
137+ fromField = atto ok32 $ signed decimal
333138
334−#if WORD_SIZE_IN_BITS < 64
335−-- | int2, int4, and if compiled as 64-bit code, int8 as well.
336−-- This library was compiled as 32-bit code.
337−#else
338−-- | int2, int4, and if compiled as 64-bit code, int8 as well.
339−-- This library was compiled as 64-bit code.
340−#endif
341139instance FromField Int where
342− fromField = attoFieldParser okInt $ signed decimal
140+ fromField = atto okInt $ signed decimal
343141
344−-- | int2, int4, int8
345142instance FromField Int64 where
346− fromField = attoFieldParser ok64 $ signed decimal
143+ fromField = atto ok64 $ signed decimal
347144
348−-- | int2, int4, int8
349145instance FromField Integer where
350− fromField = attoFieldParser ok64 $ signed decimal
146+ fromField = atto ok64 $ signed decimal
351147
352−-- | int2, float4 (Uses attoparsec's 'double' routine, for
353−-- better accuracy convert to 'Scientific' or 'Rational' first)
354148instance FromField Float where
355− fromField = attoFieldParser ok (realToFrac <$> pg_double)
356− where ok = eq TI.float4Oid \/ eq TI.int2Oid
149+ fromField = atto ok (realToFrac <$> double)
150+ where ok = mkCompats [Float4,Int2]
357151
358−-- | int2, int4, float4, float8 (Uses attoparsec's 'double' routine, for
359−-- better accuracy convert to 'Scientific' or 'Rational' first)
360152instance FromField Double where
361− fromField = attoFieldParser ok pg_double
362− where ok = eq TI.float4Oid \/ eq TI.float8Oid \/ eq TI.int2Oid \/ eq TI.int4Oid
153+ fromField = atto ok double
154+ where ok = mkCompats [Float4,Float8,Int2,Int4]
363155
364−-- | int2, int4, int8, float4, float8, numeric
365156instance FromField (Ratio Integer) where
366− fromField = attoFieldParser ok pg_rational
367− where ok = eq TI.float4Oid \/ eq TI.float8Oid \/ eq TI.int2Oid \/ eq TI.int4Oid \/ eq TI.int8Oid \/ eq TI.numericOid
368−
369−-- | int2, int4, int8, float4, float8, numeric
370−instance FromField Scientific where
371− fromField = attoFieldParser ok rational
372− where ok = eq TI.float4Oid \/ eq TI.float8Oid \/ eq TI.int2Oid \/ eq TI.int4Oid \/ eq TI.int8Oid \/ eq TI.numericOid
157+ fromField = atto ok rational
158+ where ok = mkCompats [Float4,Float8,Int2,Int4,Numeric]
373159
374160unBinary :: Binary t -> t
375161unBinary (Binary x) = x
376162
377−pg_double :: Parser Double
378−pg_double
379− = (string "NaN" *> pure ( 0 / 0))
380− <|> (string "Infinity" *> pure ( 1 / 0))
381− <|> (string "-Infinity" *> pure (-1 / 0))
382− <|> double
383−
384−pg_rational :: Parser Rational
385−pg_rational
386− = (string "NaN" *> pure notANumber )
387− <|> (string "Infinity" *> pure infinity )
388− <|> (string "-Infinity" *> pure (-infinity))
389− <|> rational
390−
391−-- | bytea, name, text, \"char\", bpchar, varchar, unknown
392163instance FromField SB.ByteString where
393− fromField f dat = if typeOid f == TI.byteaOid
164+ fromField f dat = if typeOid f == builtin2oid Bytea
394165 then unBinary <$> fromField f dat
395− else doFromField f okText' pure dat
166+ else doFromField f okText' (pure . B.copy) dat
396167
397−-- | oid
398168instance FromField PQ.Oid where
399− fromField f dat = PQ.Oid <$> attoFieldParser (== TI.oidOid) decimal f dat
169+ fromField f dat = PQ.Oid <$> atto (mkCompat Oid) decimal f dat
400170
401−-- | bytea, name, text, \"char\", bpchar, varchar, unknown
402171instance FromField LB.ByteString where
403172 fromField f dat = LB.fromChunks . (:[]) <$> fromField f dat
404173
405174unescapeBytea :: Field -> SB.ByteString
406− -> Conversion (Binary SB.ByteString)
407−unescapeBytea f str' = case unsafeDupablePerformIO (PQ.unescapeBytea str') of
175+ -> Ok (Binary SB.ByteString)
176+unescapeBytea f str = case unsafePerformIO (PQ.unescapeBytea str) of
408177 Nothing -> returnError ConversionFailed f "unescapeBytea failed"
409178 Just str -> pure (Binary str)
410179
411−-- | bytea
412180instance FromField (Binary SB.ByteString) where
413181 fromField f dat = case format f of
414182 PQ.Text -> doFromField f okBinary (unescapeBytea f) dat
415− PQ.Binary -> doFromField f okBinary (pure . Binary) dat
183+ PQ.Binary -> doFromField f okBinary (pure . Binary . B.copy) dat
416184
417−-- | bytea
418185instance FromField (Binary LB.ByteString) where
419186 fromField f dat = Binary . LB.fromChunks . (:[]) . unBinary <$> fromField f dat
420187
421−-- | name, text, \"char\", bpchar, varchar
422188instance FromField ST.Text where
423189 fromField f = doFromField f okText $ (either left pure . ST.decodeUtf8')
424190 -- FIXME: check character encoding
425191
426−-- | name, text, \"char\", bpchar, varchar
427192instance FromField LT.Text where
428193 fromField f dat = LT.fromStrict <$> fromField f dat
429194
430−-- | citext
431−instance FromField (CI ST.Text) where
432− fromField f mdat = do
433− typ <- typename f
434− if typ /= "citext"
435− then returnError Incompatible f ""
436− else case mdat of
437− Nothing -> returnError UnexpectedNull f ""
438− Just dat -> either left (pure . CI.mk)
439− (ST.decodeUtf8' dat)
440−
441−-- | citext
442−instance FromField (CI LT.Text) where
443− fromField f mdat = do
444− typ <- typename f
445− if typ /= "citext"
446− then returnError Incompatible f ""
447− else case mdat of
448− Nothing -> returnError UnexpectedNull f ""
449− Just dat -> either left (pure . CI.mk . LT.fromStrict)
450− (ST.decodeUtf8' dat)
451−
452−-- | name, text, \"char\", bpchar, varchar
453195instance FromField [Char] where
454196 fromField f dat = ST.unpack <$> fromField f dat
455197
456−-- | timestamptz
457198instance FromField UTCTime where
458− fromField = ff TI.timestamptzOid "UTCTime" parseUTCTime
199+ fromField f =
200+ case oid2builtin (typeOid f) of
201+ Just Timestamp -> doIt "%F %T%Q" id
202+ Just TimestampWithTimeZone -> doIt "%F %T%Q%z" (++ "00")
203+ _ -> const $ returnError Incompatible f "types incompatible"
204+ where
205+ doIt _ _ Nothing = returnError UnexpectedNull f ""
206+ doIt fmt preprocess (Just bs) =
207+ case parseTime defaultTimeLocale fmt str of
208+ Just t -> pure t
209+ Nothing -> returnError ConversionFailed f "could not parse"
210+ where str = preprocess (B8.unpack bs)
459211
460−-- | timestamptz
461−instance FromField ZonedTime where
462− fromField = ff TI.timestamptzOid "ZonedTime" parseZonedTime
463−
464−-- | timestamp
465−instance FromField LocalTime where
466− fromField = ff TI.timestampOid "LocalTime" parseLocalTime
467−
468−-- | date
469212instance FromField Day where
470− fromField = ff TI.dateOid "Day" parseDay
213+ fromField f = atto ok date f
214+ where ok = mkCompats [Date]
215+ date = fromGregorian <$> (decimal <* char '-')
216+ <*> (decimal <* char '-')
217+ <*> decimal
471218
472−-- | time
473219instance FromField TimeOfDay where
474− fromField = ff TI.timeOid "TimeOfDay" parseTimeOfDay
475−
476−-- | timestamptz
477−instance FromField UTCTimestamp where
478− fromField = ff TI.timestamptzOid "UTCTimestamp" parseUTCTimestamp
479−
480−-- | timestamptz
481−instance FromField ZonedTimestamp where
482− fromField = ff TI.timestamptzOid "ZonedTimestamp" parseZonedTimestamp
220+ fromField f = atto' ok time f
221+ where ok = mkCompats [Time]
222+ time = do
223+ hours <- decimal <* char ':'
224+ mins <- decimal <* char ':'
225+ secs <- decimal :: Parser Int
226+ case makeTimeOfDayValid hours mins (fromIntegral secs) of
227+ Just t -> return (pure t)
228+ _ -> return (returnError ConversionFailed f "could not parse")
483229
484−-- | timestamp
485−instance FromField LocalTimestamp where
486− fromField = ff TI.timestampOid "LocalTimestamp" parseLocalTimestamp
487−
488−-- | date
489−instance FromField Date where
490− fromField = ff TI.dateOid "Date" parseDate
491−
492−-- | interval. Requires you to configure intervalstyle as @iso_8601@.
493−--
494−-- You can configure intervalstyle on every connection with a @SET@ command,
495−-- but for better performance you may want to configure it permanently in the
496−-- file found with @SHOW config_file;@ .
497−--
498−instance FromField CalendarDiffTime where
499− fromField = ff TI.intervalOid "CalendarDiffTime" parseCalendarDiffTime
500−
501−ff :: PQ.Oid -> String -> (B8.ByteString -> Either String a)
502− -> Field -> Maybe B8.ByteString -> Conversion a
503−ff compatOid hsType parseBS f mstr =
504− if typeOid f /= compatOid
505− then err Incompatible ""
506− else case mstr of
507− Nothing -> err UnexpectedNull ""
508− Just str -> case parseBS str of
509− Left msg -> err ConversionFailed msg
510− Right val -> return val
511− where
512− err errC msg = do
513− typnam <- typename f
514− left $ errC (B8.unpack typnam)
515− (tableOid f)
516− (maybe "" B8.unpack (name f))
517− hsType
518− msg
519−{-# INLINE ff #-}
520−
521−-- | Compatible with both types. Conversions to type @b@ are
522−-- preferred, the conversion to type @a@ will be tried after
523−-- the 'Right' conversion fails.
524230instance (FromField a, FromField b) => FromField (Either a b) where
525231 fromField f dat = (Right <$> fromField f dat)
526232 <|> (Left <$> fromField f dat)
527233
528−-- | any postgresql array whose elements are compatible with type @a@
529−instance (FromField a, Typeable a) => FromField (PGArray a) where
530− fromField = pgArrayFieldParser fromField
531−
532−pgArrayFieldParser :: Typeable a => FieldParser a -> FieldParser (PGArray a)
533−pgArrayFieldParser fieldParser f mdat = do
534− info <- typeInfo f
535− case info of
536− TI.Array{} ->
537− case mdat of
538− Nothing -> returnError UnexpectedNull f ""
539− Just dat -> do
540− case parseOnly (fromArray fieldParser info f) dat of
541− Left err -> returnError ConversionFailed f err
542− Right conv -> PGArray <$> conv
543− _ -> returnError Incompatible f ""
544−
545−fromArray :: FieldParser a -> TypeInfo -> Field -> Parser (Conversion [a])
546−fromArray fieldParser typInfo f = sequence . (parseIt <$>) <$> array delim
547− where
548− delim = typdelim (typelem typInfo)
549− fElem = f{ typeOid = typoid (typelem typInfo) }
550−
551− parseIt item =
552− fieldParser f' $ if item == Arrays.Plain "NULL" then Nothing else Just item'
553− where
554− item' = fmt delim item
555− f' | Arrays.Array _ <- item = f
556− | otherwise = fElem
557−
558−instance (FromField a, Typeable a) => FromField (Vector a) where
559− fromField f v = V.fromList . fromPGArray <$> fromField f v
560−
561−instance (FromField a, Typeable a) => FromField (IOVector a) where
562− fromField f v = liftConversion . V.unsafeThaw =<< fromField f v
563−
564−-- | uuid
565−instance FromField UUID where
566− fromField f mbs =
567− if typeOid f /= TI.uuidOid
568− then returnError Incompatible f ""
569− else case mbs of
570− Nothing -> returnError UnexpectedNull f ""
571− Just bs ->
572− case UUID.fromASCIIBytes bs of
573− Nothing -> returnError ConversionFailed f "Invalid UUID"
574− Just uuid -> pure uuid
575−
576−-- | json, jsonb
577−instance FromField JSON.Value where
578− fromField f mbs = parseBS =<< fromFieldJSONByteString f mbs
579− where parseBS bs = case JSON.eitherDecodeStrict' bs of
580− Left err -> returnError ConversionFailed f err
581− Right val -> pure val
582−
583−-- | Return the JSON ByteString directly
584−--
585−-- @since 0.6.3
586−fromFieldJSONByteString :: Field -> Maybe ByteString -> Conversion ByteString
587−fromFieldJSONByteString f mbs =
588− if typeOid f /= TI.jsonOid && typeOid f /= TI.jsonbOid
589− then returnError Incompatible f ""
590− else case mbs of
591− Nothing -> returnError UnexpectedNull f ""
592− Just bs -> pure bs
593−
594−-- | Parse a field to a JSON 'JSON.Value' and convert that into a
595−-- Haskell value using the 'JSON.FromJSON' instance.
596−--
597−-- This can be used as the default implementation for the 'fromField'
598−-- method for Haskell types that have a JSON representation in
599−-- PostgreSQL.
600−--
601−-- The 'Typeable' constraint is required to show more informative
602−-- error messages when parsing fails.
603−--
604−-- Note that @fromJSONField :: FieldParser ('Maybe' Foo)@ will return
605−-- @'Nothing'@ on the json @null@ value, and return an exception on SQL @null@
606−-- value. Alternatively, one could write @'optionalField' fromJSONField@
607−-- that will return @Nothing@ on SQL @null@, and otherwise will call
608−-- @fromJSONField :: FieldParser Foo@ and then return @'Just'@ the
609−-- result value, or return its exception. If one would
610−-- like to return @Nothing@ on both the SQL @null@ and json @null@ values,
611−-- one way to do it would be to write
612−-- @\\f mv -> 'Control.Monad.join' '<$>' optionalField fromJSONField f mv@
613−fromJSONField :: (JSON.FromJSON a, Typeable a) => FieldParser a
614−fromJSONField f mbBs = do
615− value <- fromField f mbBs
616− case JSON.ifromJSON value of
617− JSON.IError path err -> returnError ConversionFailed f $
618− "JSON decoding error: " ++ (JSON.formatError path err)
619− JSON.ISuccess x -> pure x
620−
621−-- | Compatible with the same set of types as @a@. Note that
622−-- modifying the 'IORef' does not have any effects outside
623−-- the local process on the local machine.
624−instance FromField a => FromField (IORef a) where
625− fromField f v = liftConversion . newIORef =<< fromField f v
626−
627−-- | Compatible with the same set of types as @a@. Note that
628−-- modifying the 'MVar' does not have any effects outside
629−-- the local process on the local machine.
630−instance FromField a => FromField (MVar a) where
631− fromField f v = liftConversion . newMVar =<< fromField f v
632−
633−type Compat = PQ.Oid -> Bool
234+newtype Compat = Compat Word64
235+
236+mkCompats :: [BuiltinType] -> Compat
237+mkCompats = foldl' f (Compat 0) . map mkCompat
238+ where f (Compat a) (Compat b) = Compat (a .|. b)
239+
240+mkCompat :: BuiltinType -> Compat
241+mkCompat = Compat . shiftL 1 . fromEnum
242+
243+compat :: Compat -> Compat -> Bool
244+compat (Compat a) (Compat b) = a .&. b /= 0
634245
635246okText, okText', okBinary, ok16, ok32, ok64, okInt :: Compat
636−okText = eq TI.nameOid \/ eq TI.textOid \/ eq TI.charOid
637− \/ eq TI.bpcharOid \/ eq TI.varcharOid
638−okText' = eq TI.nameOid \/ eq TI.textOid \/ eq TI.charOid
639− \/ eq TI.bpcharOid \/ eq TI.varcharOid \/ eq TI.unknownOid
640−okBinary = eq TI.byteaOid
641−ok16 = eq TI.int2Oid
642−ok32 = eq TI.int2Oid \/ eq TI.int4Oid
643−ok64 = eq TI.int2Oid \/ eq TI.int4Oid \/ eq TI.int8Oid
247+okText = mkCompats [Name,Text,Char,Bpchar,Varchar]
248+okText' = mkCompats [Name,Text,Char,Bpchar,Varchar,Unknown]
249+okBinary = mkCompats [Bytea]
250+ok16 = mkCompats [Int2]
251+ok32 = mkCompats [Int2,Int4]
252+ok64 = mkCompats [Int2,Int4,Int8]
644253#if WORD_SIZE_IN_BITS < 64
645254okInt = ok32
646255#else
647256okInt = ok64
648257#endif
649258
650−-- | eq and \/ are used to imlement what Macro stuff did,
651−-- i.e. mkCompats and inlineTypoid
652−eq :: PQ.Oid -> PQ.Oid -> Bool
653−eq = (==)
654−{-# INLINE eq #-}
655−
656−infixr 2 \/
657−(\/) :: (PQ.Oid -> Bool)
658− -> (PQ.Oid -> Bool)
659− -> (PQ.Oid -> Bool)
660−f \/ g = \x -> f x || g x
661−{-# INLINE (\/) #-}
662−
663259doFromField :: forall a . (Typeable a)
664− => Field -> Compat -> (ByteString -> Conversion a)
665− -> Maybe ByteString -> Conversion a
666−doFromField f isCompat cvt (Just bs)
667− | isCompat (typeOid f) = cvt bs
260+ => Field -> Compat -> (ByteString -> Ok a)
261+ -> Maybe ByteString -> Ok a
262+doFromField f types cvt (Just bs)
263+ | Just typ <- oid2builtin (typeOid f)
264+ , mkCompat typ `compat` types = cvt bs
668265 | otherwise = returnError Incompatible f "types incompatible"
669266doFromField f _ _ _ = returnError UnexpectedNull f ""
670267
@@ -674,35 +271,29 @@ doFromField f _ _ _ = returnError UnexpectedNull f ""
674271-- exception value and returns it in a 'Left . SomeException'
675272-- constructor.
676273returnError :: forall a err . (Typeable a, Exception err)
677− => (String -> Maybe PQ.Oid -> String -> String -> String -> err)
678− -> Field -> String -> Conversion a
679−returnError mkErr f msg = do
680− typnam <- typename f
681− left $ mkErr (B.unpack typnam)
682− (tableOid f)
683− (maybe "" B.unpack (name f))
684− (show (typeOf (undefined :: a)))
685− msg
686−
687−-- | Construct a field parser from an attoparsec parser. An 'Incompatible' error is thrown if the
688−-- PostgreSQL oid does not match the specified predicate.
689−--
690−-- @
691−-- instance FromField Int16 where
692−-- fromField = attoFieldParser ok16 (signed decimal)
693−-- @
694−--
695−-- @since 0.6.3
696−attoFieldParser :: forall a. (Typeable a)
697− => (PQ.Oid -> Bool)
698− -- ^ Predicate for whether the postgresql type oid is compatible with this parser
699− -> Parser a
700− -- ^ An attoparsec parser.
701− -> FieldParser a
702−attoFieldParser types p0 f dat = doFromField f types (go p0) dat
274+ => (String -> String -> String -> err)
275+ -> Field -> String -> Ok a
276+returnError mkErr f = left . mkErr (B.unpack (typename f))
277+ (show (typeOf (undefined :: a)))
278+
279+atto :: forall a. (Typeable a)
280+ => Compat -> Parser a -> Field -> Maybe ByteString
281+ -> Ok a
282+atto types p0 f dat = doFromField f types (go p0) dat
703283 where
704− go :: Parser a -> ByteString -> Conversion a
284+ go :: Parser a -> ByteString -> Ok a
705285 go p s =
706286 case parseOnly p s of
707287 Left err -> returnError ConversionFailed f err
708288 Right v -> pure v
289+
290+atto' :: forall a. (Typeable a)
291+ => Compat -> Parser (Ok a) -> Field -> Maybe ByteString
292+ -> Ok a
293+atto' types p0 f dat = doFromField f types (go p0) dat
294+ where
295+ go :: Parser (Ok a) -> ByteString -> Ok a
296+ go p s =
297+ case parseOnly p s of
298+ Left err -> returnError ConversionFailed f err
299+ Right v -> v
src/Database/PostgreSQL/Simple/FromField.hs-bootdeleted−11
@@ -1,11 +0,0 @@
1−module Database.PostgreSQL.Simple.FromField where
2−
3−import Data.ByteString(ByteString)
4−import Database.PostgreSQL.Simple.Types
5−
6−class FromField a
7−
8−instance FromField Oid
9−instance FromField Char
10−instance FromField ByteString
11−instance FromField a => FromField (Maybe a)
src/Database/PostgreSQL/Simple/FromRow.hs+34−365
@@ -1,63 +1,53 @@
1−{-# LANGUAGE FlexibleContexts #-}
2−{-# LANGUAGE RecordWildCards, FlexibleInstances, DefaultSignatures #-}
3−
1+{-# LANGUAGE RecordWildCards #-}
42
53------------------------------------------------------------------------------
64-- |
75-- Module: Database.PostgreSQL.Simple.FromRow
8−-- Copyright: (c) 2012 Leon P Smith
6+-- Copyright: (c) 2011 Leon P Smith
97-- License: BSD3
108-- Maintainer: Leon P Smith <leon@melding-monads.com>
119-- Stability: experimental
10+-- Portability: portable
1211--
1312-- The 'FromRow' typeclass, for converting a row of results
1413-- returned by a SQL query into a more useful Haskell representation.
1514--
1615-- Predefined instances are provided for tuples containing up to ten
17−-- elements. The instances for 'Maybe' types return 'Nothing' if all
18−-- the columns that would have been otherwise consumed are null, otherwise
19−-- it attempts a regular conversion.
20−--
16+-- elements.
2117------------------------------------------------------------------------------
2218
2319module Database.PostgreSQL.Simple.FromRow
2420 ( FromRow(..)
2521 , RowParser
2622 , field
27− , fieldWith
2823 , numFieldsRemaining
2924 ) where
3025
31−import Prelude hiding (null)
32−import Control.Applicative (Applicative(..), (<$>), (<|>), (*>), liftA2)
33−import Control.Monad (replicateM, replicateM_)
34−import Control.Monad.Trans.State.Strict
35−import Control.Monad.Trans.Reader
36−import Control.Monad.Trans.Class
37−import Data.ByteString (ByteString)
26+import Control.Applicative (Applicative(..), (<$>))
27+import Control.Exception (SomeException(..))
28+import Control.Monad (replicateM)
29+import Data.ByteString (ByteString)
3830import qualified Data.ByteString.Char8 as B
39−import Data.Vector (Vector)
40−import qualified Data.Vector as V
41−import Database.PostgreSQL.Simple.Types (Only(..))
31+import Database.PostgreSQL.Simple.Types (Only(..))
32+import Database.PostgreSQL.Simple.Ok
4233import qualified Database.PostgreSQL.LibPQ as PQ
4334import Database.PostgreSQL.Simple.Internal
44−import Database.PostgreSQL.Simple.Compat
4535import Database.PostgreSQL.Simple.FromField
46−import Database.PostgreSQL.Simple.Ok
47−import Database.PostgreSQL.Simple.Types ((:.)(..), Null)
48−import Database.PostgreSQL.Simple.TypeInfo
36+import Database.PostgreSQL.Simple.Types ((:.)(..))
4937
50−import GHC.Generics
38+import Control.Monad.Trans.State.Strict
39+import Control.Monad.Trans.Reader
40+import Control.Monad.Trans.Class
5141
42+import Data.Vector ((!))
5243
5344-- | A collection type that can be converted from a sequence of fields.
5445-- Instances are provided for tuples up to 10 elements and lists of any length.
5546--
56−-- Note that instances can be defined outside of postgresql-simple, which is
47+-- Note that instances can defined outside of postgresql-simple, which is
5748-- often useful. For example, here's an instance for a user-defined pair:
5849--
59−-- @
60−-- data User = User { name :: String, fileQuota :: Int }
50+-- @data User = User { name :: String, fileQuota :: Int }
6151--
6252-- instance 'FromRow' User where
6353-- fromRow = User \<$\> 'field' \<*\> 'field'
@@ -67,75 +57,37 @@ import GHC.Generics
6757-- in a single row of the query result. Otherwise, a 'ConversionFailed'
6858-- exception will be thrown.
6959--
70−-- You can also derive 'FromRow' for your data type using GHC generics, like
71−-- this:
72−--
73−-- @
74−-- \{-# LANGUAGE DeriveAnyClass \#-}
75−-- \{-# LANGUAGE DeriveGeneric \#-}
76−--
77−-- import "GHC.Generics" ('GHC.Generics.Generic')
78−-- import "Database.PostgreSQL.Simple" ('FromRow')
79−--
80−-- data User = User { name :: String, fileQuota :: Int }
81−-- deriving ('GHC.Generics.Generic', 'FromRow')
82−-- @
83−--
84−-- Note that this only works for product types (e.g. records) and does not
85−-- support sum types or recursive types.
86−--
87−-- Note that 'field' evaluates its result to WHNF, so the caveats listed in
88−-- mysql-simple and very early versions of postgresql-simple no longer apply.
89−-- Instead, look at the caveats associated with user-defined implementations
90−-- of 'fromField'.
60+-- Note that 'field' evaluates it's result to WHNF, so the caveats listed in
61+-- previous versions of postgresql-simple no longer apply. Instead, look
62+-- at the caveats associated with user-defined implementations of 'fromRow'.
9163
9264class FromRow a where
9365 fromRow :: RowParser a
94− default fromRow :: (Generic a, GFromRow (Rep a)) => RowParser a
95− fromRow = to <$> gfromRow
96−
97−getvalue :: PQ.Result -> PQ.Row -> PQ.Column -> Maybe ByteString
98−getvalue result row col = unsafeDupablePerformIO (PQ.getvalue' result row col)
99−
100−nfields :: PQ.Result -> PQ.Column
101−nfields result = unsafeDupablePerformIO (PQ.nfields result)
102−
103−getTypeInfoByCol :: Row -> PQ.Column -> Conversion TypeInfo
104−getTypeInfoByCol Row{..} col =
105− Conversion $ \conn -> do
106− oid <- PQ.ftype rowresult col
107− Ok <$> getTypeInfo conn oid
10866
109−getTypenameByCol :: Row -> PQ.Column -> Conversion ByteString
110−getTypenameByCol row col = typname <$> getTypeInfoByCol row col
111−
112−fieldWith :: FieldParser a -> RowParser a
113−fieldWith fieldP = RP $ do
67+field :: FromField a => RowParser a
68+field = RP $ do
11469 let unCol (PQ.Col x) = fromIntegral x :: Int
115− r@Row{..} <- ask
70+ Row{..} <- ask
11671 column <- lift get
11772 lift (put (column + 1))
11873 let ncols = nfields rowresult
11974 if (column >= ncols)
120− then lift $ lift $ do
121− vals <- mapM (getTypenameByCol r) [0..ncols-1]
122− let err = ConversionFailed
123− (show (unCol ncols) ++ " values: " ++ show (map ellipsis vals))
124− Nothing
125− ""
75+ then do
76+ let vals = map (\c -> ( typenames ! (unCol c)
77+ , fmap ellipsis (getvalue rowresult row c) ))
78+ [0..ncols-1]
79+ convertError = ConversionFailed
80+ (show (unCol ncols) ++ " values: " ++ show vals)
12681 ("at least " ++ show (unCol column + 1)
12782 ++ " slots in target type")
12883 "mismatch between number of columns to \
12984 \convert and number in target type"
130− conversionError err
85+ lift (lift (Errors [SomeException convertError]))
13186 else do
132− let !result = rowresult
133− !typeOid = unsafeDupablePerformIO (PQ.ftype result column)
134− !field' = Field{..}
135− lift (lift (fieldP field' (getvalue result row column)))
136−
137−field :: FromField a => RowParser a
138−field = fieldWith fromField
87+ let typename = typenames ! unCol column
88+ result = rowresult
89+ field = Field{..}
90+ lift (lift (fromField field (getvalue result row column)))
13991
14092ellipsis :: ByteString -> ByteString
14193ellipsis bs
@@ -148,340 +100,57 @@ numFieldsRemaining = RP $ do
148100 column <- lift get
149101 return $! (\(PQ.Col x) -> fromIntegral x) (nfields rowresult - column)
150102
151−null :: RowParser Null
152−null = field
153−
154103instance (FromField a) => FromRow (Only a) where
155104 fromRow = Only <$> field
156105
157−instance (FromField a) => FromRow (Maybe (Only a)) where
158− fromRow = (null *> pure Nothing)
159− <|> (Just <$> fromRow)
160−
161106instance (FromField a, FromField b) => FromRow (a,b) where
162107 fromRow = (,) <$> field <*> field
163108
164−instance (FromField a, FromField b) => FromRow (Maybe (a,b)) where
165− fromRow = (null *> null *> pure Nothing)
166− <|> (Just <$> fromRow)
167−
168109instance (FromField a, FromField b, FromField c) => FromRow (a,b,c) where
169110 fromRow = (,,) <$> field <*> field <*> field
170111
171−instance (FromField a, FromField b, FromField c) => FromRow (Maybe (a,b,c)) where
172− fromRow = (null *> null *> null *> pure Nothing)
173− <|> (Just <$> fromRow)
174−
175112instance (FromField a, FromField b, FromField c, FromField d) =>
176113 FromRow (a,b,c,d) where
177114 fromRow = (,,,) <$> field <*> field <*> field <*> field
178115
179−instance (FromField a, FromField b, FromField c, FromField d) =>
180− FromRow (Maybe (a,b,c,d)) where
181− fromRow = (null *> null *> null *> null *> pure Nothing)
182− <|> (Just <$> fromRow)
183−
184116instance (FromField a, FromField b, FromField c, FromField d, FromField e) =>
185117 FromRow (a,b,c,d,e) where
186118 fromRow = (,,,,) <$> field <*> field <*> field <*> field <*> field
187119
188−instance (FromField a, FromField b, FromField c, FromField d, FromField e) =>
189− FromRow (Maybe (a,b,c,d,e)) where
190− fromRow = (null *> null *> null *> null *> null *> pure Nothing)
191− <|> (Just <$> fromRow)
192−
193120instance (FromField a, FromField b, FromField c, FromField d, FromField e,
194121 FromField f) =>
195122 FromRow (a,b,c,d,e,f) where
196123 fromRow = (,,,,,) <$> field <*> field <*> field <*> field <*> field
197124 <*> field
198125
199−instance (FromField a, FromField b, FromField c, FromField d, FromField e,
200− FromField f) =>
201− FromRow (Maybe (a,b,c,d,e,f)) where
202− fromRow = (null *> null *> null *> null *> null *>
203− null *> pure Nothing)
204− <|> (Just <$> fromRow)
205−
206126instance (FromField a, FromField b, FromField c, FromField d, FromField e,
207127 FromField f, FromField g) =>
208128 FromRow (a,b,c,d,e,f,g) where
209129 fromRow = (,,,,,,) <$> field <*> field <*> field <*> field <*> field
210130 <*> field <*> field
211131
212−instance (FromField a, FromField b, FromField c, FromField d, FromField e,
213− FromField f, FromField g) =>
214− FromRow (Maybe (a,b,c,d,e,f,g)) where
215− fromRow = (null *> null *> null *> null *> null *>
216− null *> null *> pure Nothing)
217− <|> (Just <$> fromRow)
218−
219132instance (FromField a, FromField b, FromField c, FromField d, FromField e,
220133 FromField f, FromField g, FromField h) =>
221134 FromRow (a,b,c,d,e,f,g,h) where
222135 fromRow = (,,,,,,,) <$> field <*> field <*> field <*> field <*> field
223136 <*> field <*> field <*> field
224137
225−instance (FromField a, FromField b, FromField c, FromField d, FromField e,
226− FromField f, FromField g, FromField h) =>
227− FromRow (Maybe (a,b,c,d,e,f,g,h)) where
228− fromRow = (null *> null *> null *> null *> null *>
229− null *> null *> null *> pure Nothing)
230− <|> (Just <$> fromRow)
231−
232138instance (FromField a, FromField b, FromField c, FromField d, FromField e,
233139 FromField f, FromField g, FromField h, FromField i) =>
234140 FromRow (a,b,c,d,e,f,g,h,i) where
235141 fromRow = (,,,,,,,,) <$> field <*> field <*> field <*> field <*> field
236142 <*> field <*> field <*> field <*> field
237143
238−instance (FromField a, FromField b, FromField c, FromField d, FromField e,
239− FromField f, FromField g, FromField h, FromField i) =>
240− FromRow (Maybe (a,b,c,d,e,f,g,h,i)) where
241− fromRow = (null *> null *> null *> null *> null *>
242− null *> null *> null *> null *> pure Nothing)
243− <|> (Just <$> fromRow)
244−
245144instance (FromField a, FromField b, FromField c, FromField d, FromField e,
246145 FromField f, FromField g, FromField h, FromField i, FromField j) =>
247146 FromRow (a,b,c,d,e,f,g,h,i,j) where
248147 fromRow = (,,,,,,,,,) <$> field <*> field <*> field <*> field <*> field
249148 <*> field <*> field <*> field <*> field <*> field
250149
251−instance (FromField a, FromField b, FromField c, FromField d, FromField e,
252− FromField f, FromField g, FromField h, FromField i, FromField j) =>
253− FromRow (Maybe (a,b,c,d,e,f,g,h,i,j)) where
254− fromRow = (null *> null *> null *> null *> null *>
255− null *> null *> null *> null *> null *> pure Nothing)
256− <|> (Just <$> fromRow)
257−
258−instance (FromField a, FromField b, FromField c, FromField d, FromField e,
259− FromField f, FromField g, FromField h, FromField i, FromField j,
260− FromField k) =>
261− FromRow (a,b,c,d,e,f,g,h,i,j,k) where
262− fromRow = (,,,,,,,,,,) <$> field <*> field <*> field <*> field <*> field
263− <*> field <*> field <*> field <*> field <*> field
264− <*> field
265−
266−instance (FromField a, FromField b, FromField c, FromField d, FromField e,
267− FromField f, FromField g, FromField h, FromField i, FromField j,
268− FromField k) =>
269− FromRow (Maybe (a,b,c,d,e,f,g,h,i,j,k)) where
270− fromRow = (null *> null *> null *> null *> null *>
271− null *> null *> null *> null *> null *>
272− null *> pure Nothing)
273− <|> (Just <$> fromRow)
274−
275−instance (FromField a, FromField b, FromField c, FromField d, FromField e,
276− FromField f, FromField g, FromField h, FromField i, FromField j,
277− FromField k, FromField l) =>
278− FromRow (a,b,c,d,e,f,g,h,i,j,k,l) where
279− fromRow = (,,,,,,,,,,,) <$> field <*> field <*> field <*> field <*> field
280− <*> field <*> field <*> field <*> field <*> field
281− <*> field <*> field
282−
283−instance (FromField a, FromField b, FromField c, FromField d, FromField e,
284− FromField f, FromField g, FromField h, FromField i, FromField j,
285− FromField k, FromField l) =>
286− FromRow (Maybe (a,b,c,d,e,f,g,h,i,j,k,l)) where
287− fromRow = (null *> null *> null *> null *> null *>
288− null *> null *> null *> null *> null *>
289− null *> null *> pure Nothing)
290− <|> (Just <$> fromRow)
291−
292−instance (FromField a, FromField b, FromField c, FromField d, FromField e,
293− FromField f, FromField g, FromField h, FromField i, FromField j,
294− FromField k, FromField l, FromField m) =>
295− FromRow (a,b,c,d,e,f,g,h,i,j,k,l,m) where
296− fromRow = (,,,,,,,,,,,,) <$> field <*> field <*> field <*> field <*> field
297− <*> field <*> field <*> field <*> field <*> field
298− <*> field <*> field <*> field
299−
300−instance (FromField a, FromField b, FromField c, FromField d, FromField e,
301− FromField f, FromField g, FromField h, FromField i, FromField j,
302− FromField k, FromField l, FromField m) =>
303− FromRow (Maybe (a,b,c,d,e,f,g,h,i,j,k,l,m)) where
304− fromRow = (null *> null *> null *> null *> null *>
305− null *> null *> null *> null *> null *>
306− null *> null *> null *> pure Nothing)
307− <|> (Just <$> fromRow)
308−
309−instance (FromField a, FromField b, FromField c, FromField d, FromField e,
310− FromField f, FromField g, FromField h, FromField i, FromField j,
311− FromField k, FromField l, FromField m, FromField n) =>
312− FromRow (a,b,c,d,e,f,g,h,i,j,k,l,m,n) where
313− fromRow = (,,,,,,,,,,,,,) <$> field <*> field <*> field <*> field <*> field
314− <*> field <*> field <*> field <*> field <*> field
315− <*> field <*> field <*> field <*> field
316−
317−instance (FromField a, FromField b, FromField c, FromField d, FromField e,
318− FromField f, FromField g, FromField h, FromField i, FromField j,
319− FromField k, FromField l, FromField m, FromField n) =>
320− FromRow (Maybe (a,b,c,d,e,f,g,h,i,j,k,l,m,n)) where
321− fromRow = (null *> null *> null *> null *> null *>
322− null *> null *> null *> null *> null *>
323− null *> null *> null *> null *> pure Nothing)
324− <|> (Just <$> fromRow)
325−
326−instance (FromField a, FromField b, FromField c, FromField d, FromField e,
327− FromField f, FromField g, FromField h, FromField i, FromField j,
328− FromField k, FromField l, FromField m, FromField n, FromField o) =>
329− FromRow (a,b,c,d,e,f,g,h,i,j,k,l,m,n,o) where
330− fromRow = (,,,,,,,,,,,,,,) <$> field <*> field <*> field <*> field <*> field
331− <*> field <*> field <*> field <*> field <*> field
332− <*> field <*> field <*> field <*> field <*> field
333−
334−instance (FromField a, FromField b, FromField c, FromField d, FromField e,
335− FromField f, FromField g, FromField h, FromField i, FromField j,
336− FromField k, FromField l, FromField m, FromField n, FromField o) =>
337− FromRow (Maybe (a,b,c,d,e,f,g,h,i,j,k,l,m,n,o)) where
338− fromRow = (null *> null *> null *> null *> null *>
339− null *> null *> null *> null *> null *>
340− null *> null *> null *> null *> null *> pure Nothing)
341− <|> (Just <$> fromRow)
342−
343−instance (FromField a, FromField b, FromField c, FromField d, FromField e,
344− FromField f, FromField g, FromField h, FromField i, FromField j,
345− FromField k, FromField l, FromField m, FromField n, FromField o,
346− FromField p) =>
347− FromRow (a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p) where
348− fromRow = (,,,,,,,,,,,,,,,) <$> field <*> field <*> field <*> field <*> field
349− <*> field <*> field <*> field <*> field <*> field
350− <*> field <*> field <*> field <*> field <*> field
351− <*> field
352−
353−instance (FromField a, FromField b, FromField c, FromField d, FromField e,
354− FromField f, FromField g, FromField h, FromField i, FromField j,
355− FromField k, FromField l, FromField m, FromField n, FromField o,
356− FromField p) =>
357− FromRow (Maybe (a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p)) where
358− fromRow = (null *> null *> null *> null *> null *>
359− null *> null *> null *> null *> null *>
360− null *> null *> null *> null *> null *>
361− null *> pure Nothing)
362− <|> (Just <$> fromRow)
363−
364−instance (FromField a, FromField b, FromField c, FromField d, FromField e,
365− FromField f, FromField g, FromField h, FromField i, FromField j,
366− FromField k, FromField l, FromField m, FromField n, FromField o,
367− FromField p, FromField q) =>
368− FromRow (a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q) where
369− fromRow = (,,,,,,,,,,,,,,,,) <$> field <*> field <*> field <*> field <*> field
370− <*> field <*> field <*> field <*> field <*> field
371− <*> field <*> field <*> field <*> field <*> field
372− <*> field <*> field
373−
374−instance (FromField a, FromField b, FromField c, FromField d, FromField e,
375− FromField f, FromField g, FromField h, FromField i, FromField j,
376− FromField k, FromField l, FromField m, FromField n, FromField o,
377− FromField p, FromField q) =>
378− FromRow (Maybe (a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q)) where
379− fromRow = (null *> null *> null *> null *> null *>
380− null *> null *> null *> null *> null *>
381− null *> null *> null *> null *> null *>
382− null *> null *> pure Nothing)
383− <|> (Just <$> fromRow)
384−
385−instance (FromField a, FromField b, FromField c, FromField d, FromField e,
386− FromField f, FromField g, FromField h, FromField i, FromField j,
387− FromField k, FromField l, FromField m, FromField n, FromField o,
388− FromField p, FromField q, FromField r) =>
389− FromRow (a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r) where
390− fromRow = (,,,,,,,,,,,,,,,,,) <$> field <*> field <*> field <*> field <*> field
391− <*> field <*> field <*> field <*> field <*> field
392− <*> field <*> field <*> field <*> field <*> field
393− <*> field <*> field <*> field
394−
395−instance (FromField a, FromField b, FromField c, FromField d, FromField e,
396− FromField f, FromField g, FromField h, FromField i, FromField j,
397− FromField k, FromField l, FromField m, FromField n, FromField o,
398− FromField p, FromField q, FromField r) =>
399− FromRow (Maybe (a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r)) where
400− fromRow = (null *> null *> null *> null *> null *>
401− null *> null *> null *> null *> null *>
402− null *> null *> null *> null *> null *>
403− null *> null *> null *> pure Nothing)
404− <|> (Just <$> fromRow)
405−
406−instance (FromField a, FromField b, FromField c, FromField d, FromField e,
407− FromField f, FromField g, FromField h, FromField i, FromField j,
408− FromField k, FromField l, FromField m, FromField n, FromField o,
409− FromField p, FromField q, FromField r, FromField s) =>
410− FromRow (a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s) where
411− fromRow = (,,,,,,,,,,,,,,,,,,) <$> field <*> field <*> field <*> field <*> field
412− <*> field <*> field <*> field <*> field <*> field
413− <*> field <*> field <*> field <*> field <*> field
414− <*> field <*> field <*> field <*> field
415−
416−instance (FromField a, FromField b, FromField c, FromField d, FromField e,
417− FromField f, FromField g, FromField h, FromField i, FromField j,
418− FromField k, FromField l, FromField m, FromField n, FromField o,
419− FromField p, FromField q, FromField r, FromField s) =>
420− FromRow (Maybe (a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s)) where
421− fromRow = (null *> null *> null *> null *> null *>
422− null *> null *> null *> null *> null *>
423− null *> null *> null *> null *> null *>
424− null *> null *> null *> null *> pure Nothing)
425− <|> (Just <$> fromRow)
426−
427−instance (FromField a, FromField b, FromField c, FromField d, FromField e,
428− FromField f, FromField g, FromField h, FromField i, FromField j,
429− FromField k, FromField l, FromField m, FromField n, FromField o,
430− FromField p, FromField q, FromField r, FromField s, FromField t) =>
431− FromRow (a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t) where
432− fromRow = (,,,,,,,,,,,,,,,,,,,) <$> field <*> field <*> field <*> field <*> field
433− <*> field <*> field <*> field <*> field <*> field
434− <*> field <*> field <*> field <*> field <*> field
435− <*> field <*> field <*> field <*> field <*> field
436−
437−instance (FromField a, FromField b, FromField c, FromField d, FromField e,
438− FromField f, FromField g, FromField h, FromField i, FromField j,
439− FromField k, FromField l, FromField m, FromField n, FromField o,
440− FromField p, FromField q, FromField r, FromField s, FromField t) =>
441− FromRow (Maybe (a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t)) where
442− fromRow = (null *> null *> null *> null *> null *>
443− null *> null *> null *> null *> null *>
444− null *> null *> null *> null *> null *>
445− null *> null *> null *> null *> null *> pure Nothing)
446− <|> (Just <$> fromRow)
447−
448150instance FromField a => FromRow [a] where
449151 fromRow = do
450152 n <- numFieldsRemaining
451153 replicateM n field
452154
453−instance FromField a => FromRow (Maybe [a]) where
454− fromRow = do
455− n <- numFieldsRemaining
456− (replicateM_ n null *> pure Nothing) <|> (Just <$> replicateM n field)
457−
458−instance FromField a => FromRow (Vector a) where
459− fromRow = do
460− n <- numFieldsRemaining
461− V.replicateM n field
462−
463−instance FromField a => FromRow (Maybe (Vector a)) where
464− fromRow = do
465− n <- numFieldsRemaining
466− (replicateM_ n null *> pure Nothing) <|> (Just <$> V.replicateM n field)
467−
468155instance (FromRow a, FromRow b) => FromRow (a :. b) where
469156 fromRow = (:.) <$> fromRow <*> fromRow
470−
471−
472−
473−-- Type class for default implementation of FromRow using generics
474−class GFromRow f where
475− gfromRow :: RowParser (f p)
476−
477−instance GFromRow f => GFromRow (M1 c i f) where
478− gfromRow = M1 <$> gfromRow
479−
480−instance (GFromRow f, GFromRow g) => GFromRow (f :*: g) where
481− gfromRow = liftA2 (:*:) gfromRow gfromRow
482−
483−instance (FromField a) => GFromRow (K1 R a) where
484− gfromRow = K1 <$> field
485−
486−instance GFromRow U1 where
487− gfromRow = pure U1
src/Database/PostgreSQL/Simple/FromRow.hs-bootdeleted−17
@@ -1,17 +0,0 @@
1−module Database.PostgreSQL.Simple.FromRow where
2−
3−import {-# SOURCE #-} Database.PostgreSQL.Simple.FromField
4−import Database.PostgreSQL.Simple.Types
5−
6−class FromRow a
7−
8−instance (FromField a) => FromRow (Only a)
9−instance (FromField a, FromField b)
10− => FromRow (a,b)
11−instance (FromField a, FromField b, FromField c, FromField d)
12− => FromRow (a,b,c,d)
13−instance (FromField a, FromField b, FromField c, FromField d, FromField e)
14− => FromRow (a,b,c,d,e)
15−instance (FromField a, FromField b, FromField c, FromField d, FromField e
16− ,FromField f)
17− => FromRow (a,b,c,d,e,f)
src/Database/PostgreSQL/Simple/HStore.hsdeleted−36
@@ -1,36 +0,0 @@
1−------------------------------------------------------------------------------
2−-- |
3−-- Module: Database.PostgreSQL.Simple.HStore
4−-- Copyright: (c) 2013 Leon P Smith
5−-- License: BSD3
6−-- Maintainer: Leon P Smith <leon@melding-monads.com>
7−-- Stability: experimental
8−--
9−-- Parsers and printers for hstore, a extended type bundled with
10−-- PostgreSQL providing finite maps from text strings to text strings.
11−-- See <https://www.postgresql.org/docs/9.5/static/hstore.html> for more
12−-- information.
13−--
14−-- Note that in order to use this type, a database superuser must
15−-- install it by running a sql script in the share directory. This
16−-- can be done on PostgreSQL 9.1 and later with the command
17−-- @CREATE EXTENSION hstore@. See
18−-- <https://www.postgresql.org/docs/9.5/static/contrib.html> for more
19−-- information.
20−--
21−------------------------------------------------------------------------------
22−
23−module Database.PostgreSQL.Simple.HStore
24− ( HStoreList(..)
25− , HStoreMap(..)
26− , ToHStore(..)
27− , HStoreBuilder
28− , toBuilder
29− , toLazyByteString
30− , hstore
31− , parseHStoreList
32− , ToHStoreText(..)
33− , HStoreText
34− ) where
35−
36−import Database.PostgreSQL.Simple.HStore.Implementation
src/Database/PostgreSQL/Simple/HStore/Implementation.hsdeleted−210
@@ -1,210 +0,0 @@
1−{-# LANGUAGE CPP, ViewPatterns, DeriveDataTypeable, GeneralizedNewtypeDeriving #-}
2−
3−------------------------------------------------------------------------------
4−-- |
5−-- Module: Database.PostgreSQL.Simple.HStore.Implementation
6−-- Copyright: (c) 2013 Leon P Smith
7−-- License: BSD3
8−-- Maintainer: Leon P Smith <leon@melding-monads.com>
9−-- Stability: experimental
10−--
11−-- This code has yet to be profiled and optimized.
12−--
13−------------------------------------------------------------------------------
14−
15−module Database.PostgreSQL.Simple.HStore.Implementation where
16−
17−import Control.Applicative
18−import qualified Data.Attoparsec.ByteString as P
19−import qualified Data.Attoparsec.ByteString.Char8 as P (isSpace_w8)
20−import qualified Data.ByteString as BS
21−import Data.ByteString.Builder (Builder, byteString, char8)
22−import qualified Data.ByteString.Builder as BU
23−import Data.ByteString.Internal (c2w, w2c)
24−import qualified Data.ByteString.Lazy as BL
25−import Data.Map(Map)
26−import qualified Data.Map as Map
27−import Data.Text(Text)
28−import qualified Data.Text as TS
29−import qualified Data.Text.Encoding as TS
30−import Data.Text.Encoding.Error(UnicodeException)
31−import qualified Data.Text.Lazy as TL
32−import Data.Typeable
33−import Data.Monoid(Monoid(..))
34−import Data.Semigroup
35−import Database.PostgreSQL.Simple.FromField
36−import Database.PostgreSQL.Simple.ToField
37−
38−class ToHStore a where
39− toHStore :: a -> HStoreBuilder
40−
41−-- | Represents valid hstore syntax.
42−data HStoreBuilder
43− = Empty
44− | Comma !Builder
45− deriving (Typeable)
46−
47−instance ToHStore HStoreBuilder where
48− toHStore = id
49−
50−toBuilder :: HStoreBuilder -> Builder
51−toBuilder x = case x of
52− Empty -> mempty
53− Comma c -> c
54−
55−toLazyByteString :: HStoreBuilder -> BL.ByteString
56−toLazyByteString x = case x of
57− Empty -> BL.empty
58− Comma c -> BU.toLazyByteString c
59−
60−instance Semigroup HStoreBuilder where
61− Empty <> x = x
62− Comma a <> x
63− = Comma (a `mappend` case x of
64− Empty -> mempty
65− Comma b -> char8 ',' `mappend` b)
66−
67−instance Monoid HStoreBuilder where
68− mempty = Empty
69−
70−class ToHStoreText a where
71− toHStoreText :: a -> HStoreText
72−
73−-- | Represents escape text, ready to be the key or value to a hstore value
74−newtype HStoreText = HStoreText Builder deriving (Typeable, Semigroup, Monoid)
75−
76−instance ToHStoreText HStoreText where
77− toHStoreText = id
78−
79−-- | Assumed to be UTF-8 encoded
80−instance ToHStoreText BS.ByteString where
81− toHStoreText str = HStoreText (escapeAppend str mempty)
82−
83−-- | Assumed to be UTF-8 encoded
84−instance ToHStoreText BL.ByteString where
85− toHStoreText = HStoreText . BL.foldrChunks escapeAppend mempty
86−
87−instance ToHStoreText TS.Text where
88− toHStoreText str = HStoreText (escapeAppend (TS.encodeUtf8 str) mempty)
89−
90−instance ToHStoreText TL.Text where
91− toHStoreText = HStoreText . TL.foldrChunks (escapeAppend . TS.encodeUtf8) mempty
92−
93−escapeAppend :: BS.ByteString -> Builder -> Builder
94−escapeAppend = loop
95− where
96− loop (BS.break quoteNeeded -> (a,b)) rest
97− = byteString a `mappend`
98− case BS.uncons b of
99− Nothing -> rest
100− Just (c,d) -> quoteChar c `mappend` loop d rest
101−
102− quoteNeeded c = c == c2w '\"' || c == c2w '\\'
103− quoteChar c
104− | c == c2w '\"' = byteString "\\\""
105− | otherwise = byteString "\\\\"
106−
107−hstore :: (ToHStoreText a, ToHStoreText b) => a -> b -> HStoreBuilder
108−hstore (toHStoreText -> (HStoreText key)) (toHStoreText -> (HStoreText val)) =
109− Comma (char8 '"' `mappend` key `mappend` byteString "\"=>\""
110− `mappend` val `mappend` char8 '"')
111−
112−instance ToField HStoreBuilder where
113− toField Empty = toField (BS.empty)
114− toField (Comma x) = toField (BU.toLazyByteString x)
115−
116−newtype HStoreList = HStoreList {fromHStoreList :: [(Text,Text)]} deriving (Typeable, Show)
117−
118−-- | hstore
119−instance ToHStore HStoreList where
120− toHStore (HStoreList xs) = mconcat (map (uncurry hstore) xs)
121−
122−instance ToField HStoreList where
123− toField xs = toField (toHStore xs)
124−
125−-- | hstore
126−instance FromField HStoreList where
127− fromField f mdat = do
128− typ <- typename f
129− if typ /= "hstore"
130− then returnError Incompatible f ""
131− else case mdat of
132− Nothing -> returnError UnexpectedNull f ""
133− Just dat ->
134− case P.parseOnly (parseHStore <* P.endOfInput) dat of
135− Left err ->
136− returnError ConversionFailed f err
137− Right (Left err) ->
138− returnError ConversionFailed f "unicode exception" <|>
139− conversionError err
140− Right (Right val) ->
141− return val
142−
143−newtype HStoreMap = HStoreMap {fromHStoreMap :: Map Text Text} deriving (Eq, Ord, Typeable, Show)
144−
145−instance ToHStore HStoreMap where
146− toHStore (HStoreMap xs) = Map.foldrWithKey f mempty xs
147− where f k v xs' = hstore k v `mappend` xs'
148−
149−instance ToField HStoreMap where
150− toField xs = toField (toHStore xs)
151−
152−instance FromField HStoreMap where
153− fromField f mdat = convert <$> fromField f mdat
154− where convert (HStoreList xs) = HStoreMap (Map.fromList xs)
155−
156−parseHStoreList :: BS.ByteString -> Either String HStoreList
157−parseHStoreList dat =
158− case P.parseOnly (parseHStore <* P.endOfInput) dat of
159− Left err -> Left (show err)
160− Right (Left err) -> Left (show err)
161− Right (Right val) -> Right val
162−
163−parseHStore :: P.Parser (Either UnicodeException HStoreList)
164−parseHStore = do
165− kvs <- P.sepBy' (skipWhiteSpace *> parseHStoreKeyVal)
166− (skipWhiteSpace *> P.word8 (c2w ','))
167− return $ HStoreList <$> sequence kvs
168−
169−parseHStoreKeyVal :: P.Parser (Either UnicodeException (Text,Text))
170−parseHStoreKeyVal = do
171− mkey <- parseHStoreText
172− case mkey of
173− Left err -> return (Left err)
174− Right key -> do
175− skipWhiteSpace
176− _ <- P.string "=>"
177− skipWhiteSpace
178− mval <- parseHStoreText
179− case mval of
180− Left err -> return (Left err)
181− Right val -> return (Right (key,val))
182−
183−
184−skipWhiteSpace :: P.Parser ()
185−skipWhiteSpace = P.skipWhile P.isSpace_w8
186−
187−parseHStoreText :: P.Parser (Either UnicodeException Text)
188−parseHStoreText = do
189− _ <- P.word8 (c2w '"')
190− mtexts <- parseHStoreTexts id
191− case mtexts of
192− Left err -> return (Left err)
193− Right texts -> do
194− _ <- P.word8 (c2w '"')
195− return (Right (TS.concat texts))
196−
197−parseHStoreTexts :: ([Text] -> [Text])
198− -> P.Parser (Either UnicodeException [Text])
199−parseHStoreTexts acc = do
200− mchunk <- TS.decodeUtf8' <$> P.takeWhile (not . isSpecialChar)
201− case mchunk of
202− Left err -> return (Left err)
203− Right chunk ->
204− (do
205− _ <- P.word8 (c2w '\\')
206− c <- TS.singleton . w2c <$> P.satisfy isSpecialChar
207− parseHStoreTexts (acc . (chunk:) . (c:))
208− ) <|> return (Right (acc [chunk]))
209− where
210− isSpecialChar c = c == c2w '\\' || c == c2w '"'
src/Database/PostgreSQL/Simple/HStore/Internal.hsdeleted−19
@@ -1,19 +0,0 @@
1−------------------------------------------------------------------------------
2−-- |
3−-- Module: Database.PostgreSQL.Simple.HStore.Internal
4−-- Copyright: (c) 2013 Leon P Smith
5−-- License: BSD3
6−-- Maintainer: Leon P Smith <leon@melding-monads.com>
7−-- Stability: experimental
8−--
9−------------------------------------------------------------------------------
10−
11−module Database.PostgreSQL.Simple.HStore.Internal
12− ( HStoreBuilder(..)
13− , HStoreText(..)
14− , parseHStore
15− , parseHStoreKeyVal
16− , parseHStoreText
17− ) where
18−
19−import Database.PostgreSQL.Simple.HStore.Implementation
src/Database/PostgreSQL/Simple/Internal.hs+74−401
@@ -1,16 +1,12 @@
1−{-# LANGUAGE CPP, BangPatterns, DoAndIfThenElse, RecordWildCards #-}
2−{-# LANGUAGE DeriveDataTypeable, DeriveGeneric #-}
3−{-# LANGUAGE GeneralizedNewtypeDeriving #-}
4−{-# LANGUAGE ExistentialQuantification #-}
5−{-# LANGUAGE InstanceSigs #-}
6−
1+{-# LANGUAGE RecordWildCards, DeriveDataTypeable, GeneralizedNewtypeDeriving #-}
72------------------------------------------------------------------------------
83-- |
94-- Module: Database.PostgreSQL.Simple.Internal
10−-- Copyright: (c) 2011-2015 Leon P Smith
5+-- Copyright: (c) 2011 Leon P Smith
116-- License: BSD3
127-- Maintainer: Leon P Smith <leon@melding-monads.com>
138-- Stability: experimental
9+-- Portability: portable
1410--
1511-- Internal bits. This interface is less stable and can change at any time.
1612-- In particular this means that while the rest of the postgresql-simple
@@ -23,40 +19,29 @@
2319
2420module Database.PostgreSQL.Simple.Internal where
2521
22+import Prelude hiding (catch)
23+
2624import Control.Applicative
2725import Control.Exception
2826import Control.Concurrent.MVar
29−import Control.Monad(MonadPlus(..))
3027import Data.ByteString(ByteString)
31−import qualified Data.ByteString as B
28+import qualified Data.ByteString as B
3229import qualified Data.ByteString.Char8 as B8
33−import Data.ByteString.Builder ( Builder, byteString )
3430import Data.Char (ord)
3531import Data.Int (Int64)
3632import qualified Data.IntMap as IntMap
37−import Data.IORef
38−import Data.Maybe(fromMaybe)
3933import Data.String
40−import qualified Data.Text as T
41−import qualified Data.Text.Encoding as TE
4234import Data.Typeable
4335import Data.Word
4436import Database.PostgreSQL.LibPQ(Oid(..))
4537import qualified Database.PostgreSQL.LibPQ as PQ
46−import Database.PostgreSQL.LibPQ(ExecStatus(..))
47−import Database.PostgreSQL.Simple.Compat ( toByteString )
38+import Database.PostgreSQL.Simple.BuiltinTypes (BuiltinType)
4839import Database.PostgreSQL.Simple.Ok
49−import Database.PostgreSQL.Simple.ToField (Action(..), inQuotes)
5040import Database.PostgreSQL.Simple.Types (Query(..))
51−import Database.PostgreSQL.Simple.TypeInfo.Types(TypeInfo)
5241import Control.Monad.Trans.State.Strict
5342import Control.Monad.Trans.Reader
54−import Control.Monad.Trans.Class
55−import GHC.Generics
56−import GHC.IO.Exception
57−#if !defined(mingw32_HOST_OS)
58−import Control.Concurrent(threadWaitRead, threadWaitWrite)
59−#endif
43+import qualified Data.Vector as V
44+import System.IO.Unsafe (unsafePerformIO)
6045
6146-- | A Field represents metadata about a particular field
6247--
@@ -67,56 +52,44 @@ import Control.Concurrent(threadWaitRead, threadWaitWrite)
6752data Field = Field {
6853 result :: !PQ.Result
6954 , column :: {-# UNPACK #-} !PQ.Column
70− , typeOid :: {-# UNPACK #-} !PQ.Oid
71− -- ^ This returns the type oid associated with the column. Analogous
72− -- to libpq's @PQftype@.
55+ , typename :: !ByteString
7356 }
7457
75−type TypeInfoCache = IntMap.IntMap TypeInfo
58+name :: Field -> Maybe ByteString
59+name Field{..} = unsafePerformIO (PQ.fname result column)
7660
77−data Connection = Connection {
78− connectionHandle :: {-# UNPACK #-} !(MVar PQ.Connection)
79− , connectionObjects :: {-# UNPACK #-} !(MVar TypeInfoCache)
80− , connectionTempNameCounter :: {-# UNPACK #-} !(IORef Int64)
81− } deriving (Typeable)
61+tableOid :: Field -> PQ.Oid
62+tableOid Field{..} = unsafePerformIO (PQ.ftable result column)
8263
83−instance Eq Connection where
84− x == y = connectionHandle x == connectionHandle y
64+tableColumn :: Field -> Int
65+tableColumn Field{..} = fromCol (unsafePerformIO (PQ.ftablecol result column))
66+ where
67+ fromCol (PQ.Col x) = fromIntegral x
8568
86−-- | Superclass for postgresql exceptions
87−data SomePostgreSqlException = forall e. Exception e => SomePostgreSqlException e
88− deriving Typeable
8969
90−postgresqlExceptionToException :: Exception e => e -> SomeException
91−postgresqlExceptionToException = toException . SomePostgreSqlException
70+format :: Field -> PQ.Format
71+format Field{..} = unsafePerformIO (PQ.fformat result column)
9272
93−postgresqlExceptionFromException :: Exception e => SomeException -> Maybe e
94−postgresqlExceptionFromException x = do
95− SomePostgreSqlException a <- fromException x
96− cast a
73+typeOid :: Field -> PQ.Oid
74+typeOid Field{..} = unsafePerformIO (PQ.ftype result column)
9775
98−instance Show SomePostgreSqlException where
99− showsPrec :: Int -> SomePostgreSqlException -> ShowS
100− showsPrec p (SomePostgreSqlException e) = showsPrec p e
10176
102−instance Exception SomePostgreSqlException where
103− displayException (SomePostgreSqlException e) = displayException e
77+data Connection = Connection {
78+ connectionHandle :: {-# UNPACK #-} !(MVar PQ.Connection)
79+ , connectionObjects :: {-# UNPACK #-} !(MVar (IntMap.IntMap ByteString))
80+ }
81+
82+data SqlType
83+ = Builtin BuiltinType
84+ | Other Oid
10485
10586data SqlError = SqlError {
10687 sqlState :: ByteString
107− , sqlExecStatus :: ExecStatus
88+ , sqlNativeError :: Int
10889 , sqlErrorMsg :: ByteString
109− , sqlErrorDetail :: ByteString
110− , sqlErrorHint :: ByteString
111− } deriving (Eq, Show, Typeable)
112−
113−fatalError :: ByteString -> SqlError
114−fatalError msg = SqlError "" FatalError msg "" ""
115−
116−instance Exception SqlError where
117− toException = postgresqlExceptionToException
118− fromException = postgresqlExceptionFromException
90+ } deriving (Show, Typeable)
11991
92+instance Exception SqlError
12093
12194-- | Exception thrown if 'query' is used to perform an @INSERT@-like
12295-- operation, or 'execute' is used to perform a @SELECT@-like operation.
@@ -125,22 +98,7 @@ data QueryError = QueryError {
12598 , qeQuery :: Query
12699 } deriving (Eq, Show, Typeable)
127100
128−instance Exception QueryError where
129− toException = postgresqlExceptionToException
130− fromException = postgresqlExceptionFromException
131−
132−-- | Exception thrown if a 'Query' could not be formatted correctly.
133−-- This may occur if the number of \'@?@\' characters in the query
134−-- string does not match the number of parameters provided.
135−data FormatError = FormatError {
136− fmtMessage :: String
137− , fmtQuery :: Query
138− , fmtParams :: [ByteString]
139− } deriving (Eq, Show, Typeable)
140−
141−instance Exception FormatError where
142− toException = postgresqlExceptionToException
143− fromException = postgresqlExceptionFromException
101+instance Exception QueryError
144102
145103data ConnectInfo = ConnectInfo {
146104 connectHost :: String
@@ -148,7 +106,7 @@ data ConnectInfo = ConnectInfo {
148106 , connectUser :: String
149107 , connectPassword :: String
150108 , connectDatabase :: String
151− } deriving (Generic,Eq,Read,Show,Typeable)
109+ } deriving (Eq,Read,Show,Typeable)
152110
153111-- | Default information for setting up a connection.
154112--
@@ -182,132 +140,26 @@ defaultConnectInfo = ConnectInfo {
182140connect :: ConnectInfo -> IO Connection
183141connect = connectPostgreSQL . postgreSQLConnectionString
184142
185−-- | Memory bracket around 'connect' and 'close'.
186−--
187−-- @since 0.6.5
188−withConnect :: ConnectInfo -> (Connection -> IO c) -> IO c
189−withConnect connInfo = bracket (connect connInfo) close
190−
191143-- | Attempt to make a connection based on a libpq connection string.
192−-- See <https://www.postgresql.org/docs/9.5/static/libpq-connect.html#LIBPQ-CONNSTRING>
193−-- for more information. Also note that environment variables also affect
194−-- parameters not provided, parameters provided as the empty string, and a
195−-- few other things; see
196−-- <https://www.postgresql.org/docs/9.5/static/libpq-envars.html>
197−-- for details. Here is an example with some of the most commonly used
198−-- parameters:
199−--
200−-- > host='db.somedomain.com' port=5432 ...
201−--
202−-- This attempts to connect to @db.somedomain.com:5432@. Omitting the port
203−-- will normally default to 5432.
204−--
205−-- On systems that provide unix domain sockets, omitting the host parameter
206−-- will cause libpq to attempt to connect via unix domain sockets.
207−-- The default filesystem path to the socket is constructed from the
208−-- port number and the @DEFAULT_PGSOCKET_DIR@ constant defined in the
209−-- @pg_config_manual.h@ header file. Connecting via unix sockets tends
210−-- to use the @peer@ authentication method, which is very secure and
211−-- does not require a password.
212−--
213−-- On Windows and other systems without unix domain sockets, omitting
214−-- the host will default to @localhost@.
215−--
216−-- > ... dbname='postgres' user='postgres' password='secret \' \\ pw'
217−--
218−-- This attempts to connect to a database named @postgres@ with
219−-- user @postgres@ and password @secret \' \\ pw@. Backslash
220−-- characters will have to be double-quoted in literal Haskell strings,
221−-- of course. Omitting @dbname@ and @user@ will both default to the
222−-- system username that the client process is running as.
223−--
224−-- Omitting @password@ will default to an appropriate password found
225−-- in the @pgpass@ file, or no password at all if a matching line is
226−-- not found. The path of the @pgpass@ file may be specified by setting
227−-- the @PGPASSFILE@ environment variable. See
228−-- <https://www.postgresql.org/docs/9.5/static/libpq-pgpass.html> for
229−-- more information regarding this file.
230−--
231−-- As all parameters are optional and the defaults are sensible, the
232−-- empty connection string can be useful for development and
233−-- exploratory use, assuming your system is set up appropriately.
234−--
235−-- On Unix, such a setup would typically consist of a local
236−-- postgresql server listening on port 5432, as well as a system user,
237−-- database user, and database sharing a common name, with permissions
238−-- granted to the user on the database.
239−--
240−-- On Windows, in addition you will either need @pg_hba.conf@
241−-- to specify the use of the @trust@ authentication method for
242−-- the connection, which may not be appropriate for multiuser
243−-- or production machines, or you will need to use a @pgpass@ file
244−-- with the @password@ or @md5@ authentication methods.
245−--
246−-- See <https://www.postgresql.org/docs/9.5/static/client-authentication.html>
247−-- for more information regarding the authentication process.
248−--
249−-- SSL/TLS will typically "just work" if your postgresql server supports or
250−-- requires it. However, note that libpq is trivially vulnerable to a MITM
251−-- attack without setting additional SSL connection parameters. In
252−-- particular, @sslmode@ needs to be set to @require@, @verify-ca@, or
253−-- @verify-full@ in order to perform certificate validation. When @sslmode@
254−-- is @require@, then you will also need to specify a @sslrootcert@ file,
255−-- otherwise no validation of the server's identity will be performed.
256−-- Client authentication via certificates is also possible via the
257−-- @sslcert@ and @sslkey@ parameters. See
258−-- <https://www.postgresql.org/docs/9.5/static/libpq-ssl.html>
259−-- for detailed information regarding libpq and SSL.
144+-- See <http://www.postgresql.org/docs/9.1/static/libpq-connect.html>
145+-- for more information.
260146
261147connectPostgreSQL :: ByteString -> IO Connection
262148connectPostgreSQL connstr = do
263− conn <- connectdb connstr
149+ conn <- PQ.connectdb connstr
264150 stat <- PQ.status conn
265151 case stat of
266152 PQ.ConnectionOk -> do
267153 connectionHandle <- newMVar conn
268154 connectionObjects <- newMVar (IntMap.empty)
269− connectionTempNameCounter <- newIORef 0
270155 let wconn = Connection{..}
271− version <- PQ.serverVersion conn
272− let settings
273− | version < 80200 = "SET datestyle TO ISO;SET client_encoding TO UTF8"
274− | otherwise = "SET datestyle TO ISO;SET client_encoding TO UTF8;SET standard_conforming_strings TO on"
275− _ <- execute_ wconn settings
276− return wconn
156+ _ <- execute_ wconn "SET standard_conforming_strings TO on"
157+ return Connection{..}
277158 _ -> do
278159 msg <- maybe "connectPostgreSQL error" id <$> PQ.errorMessage conn
279− throwIO $ fatalError msg
280−
281−connectdb :: ByteString -> IO PQ.Connection
282−#if defined(mingw32_HOST_OS)
283−connectdb = PQ.connectdb
284−#else
285−connectdb conninfo = do
286− conn <- PQ.connectStart conninfo
287− loop conn
288− where
289− funcName = "Database.PostgreSQL.Simple.connectPostgreSQL"
290− loop conn = do
291− status <- PQ.connectPoll conn
292− case status of
293− PQ.PollingFailed -> throwLibPQError conn "connection failed"
294− PQ.PollingReading -> do
295− mfd <- PQ.socket conn
296− case mfd of
297− Nothing -> throwIO $! fdError funcName
298− Just fd -> do
299− threadWaitRead fd
300− loop conn
301− PQ.PollingWriting -> do
302− mfd <- PQ.socket conn
303− case mfd of
304− Nothing -> throwIO $! fdError funcName
305− Just fd -> do
306− threadWaitWrite fd
307− loop conn
308− PQ.PollingOk -> return conn
309−
310−#endif
160+ throwIO $ SqlError { sqlNativeError = -1 -- FIXME?
161+ , sqlErrorMsg = msg
162+ , sqlState = "" }
311163
312164-- | Turns a 'ConnectInfo' data structure into a libpq connection string.
313165
@@ -323,7 +175,7 @@ postgreSQLConnectionString connectInfo = fromString connstr
323175
324176 str name field
325177 | null value = id
326− | otherwise = showString name . addQuotes value . space
178+ | otherwise = showString name . quote value . space
327179 where value = field connectInfo
328180
329181 num name field
@@ -331,7 +183,7 @@ postgreSQLConnectionString connectInfo = fromString connstr
331183 | otherwise = showString name . shows value . space
332184 where value = field connectInfo
333185
334− addQuotes s rest = '\'' : foldr delta ('\'' : rest) s
186+ quote str rest = '\'' : foldr delta ('\'' : rest) str
335187 where
336188 delta c cs = case c of
337189 '\\' -> '\\' : '\\' : cs
@@ -350,53 +202,17 @@ oid2int (Oid x) = fromIntegral x
350202exec :: Connection
351203 -> ByteString
352204 -> IO PQ.Result
353−#if defined(mingw32_HOST_OS)
354205exec conn sql =
355206 withConnection conn $ \h -> do
356207 mres <- PQ.exec h sql
357208 case mres of
358− Nothing -> throwLibPQError h "PQexec returned no results"
359− Just res -> return res
360−#else
361−exec conn sql =
362− withConnection conn $ \h -> do
363− success <- PQ.sendQuery h sql
364− if success
365− then awaitResult h Nothing
366− else throwLibPQError h "PQsendQuery failed"
367− where
368− awaitResult h mres = do
369− mfd <- PQ.socket h
370− case mfd of
371− Nothing -> throwIO $! fdError "Database.PostgreSQL.Simple.Internal.exec"
372− Just fd -> do
373− threadWaitRead fd
374− _ <- PQ.consumeInput h -- FIXME?
375− getResult h mres
376−
377− getResult h mres = do
378− isBusy <- PQ.isBusy h
379− if isBusy
380− then awaitResult h mres
381− else do
382− mres' <- PQ.getResult h
383− case mres' of
384− Nothing -> case mres of
385− Nothing -> throwLibPQError h "PQgetResult returned no results"
386− Just res -> return res
387− Just res -> do
388− status <- PQ.resultStatus res
389− case status of
390− -- FIXME: handle PQ.CopyBoth and PQ.SingleTuple
391− PQ.EmptyQuery -> getResult h mres'
392− PQ.CommandOk -> getResult h mres'
393− PQ.TuplesOk -> getResult h mres'
394− PQ.CopyOut -> return res
395− PQ.CopyIn -> return res
396− PQ.BadResponse -> getResult h mres'
397− PQ.NonfatalError -> getResult h mres'
398− PQ.FatalError -> getResult h mres'
399−#endif
209+ Nothing -> do
210+ msg <- maybe "execute error" id <$> PQ.errorMessage h
211+ throwIO $ SqlError { sqlNativeError = -1 -- FIXME?
212+ , sqlErrorMsg = msg
213+ , sqlState = "" }
214+ Just res -> do
215+ return res
400216
401217-- | A version of 'execute' that does not perform query substitution.
402218execute_ :: Connection -> Query -> IO Int64
@@ -408,7 +224,6 @@ finishExecute :: Connection -> Query -> PQ.Result -> IO Int64
408224finishExecute _conn q result = do
409225 status <- PQ.resultStatus result
410226 case status of
411− -- FIXME: handle PQ.CopyBoth and PQ.SingleTuple
412227 PQ.EmptyQuery -> throwIO $ QueryError "execute: Empty query" q
413228 PQ.CommandOk -> do
414229 ncols <- PQ.nfields result
@@ -419,7 +234,7 @@ finishExecute _conn q result = do
419234 nstr <- PQ.cmdTuples result
420235 return $ case nstr of
421236 Nothing -> 0 -- is this appropriate?
422− Just str -> mkInteger str
237+ Just str -> toInteger str
423238 PQ.TuplesOk -> do
424239 ncols <- PQ.nfields result
425240 throwIO $ QueryError ("execute resulted in " ++ show ncols ++
@@ -432,7 +247,7 @@ finishExecute _conn q result = do
432247 PQ.NonfatalError -> throwResultError "execute" result status
433248 PQ.FatalError -> throwResultError "execute" result status
434249 where
435− mkInteger str = B8.foldl' delta 0 str
250+ toInteger str = B8.foldl' delta 0 str
436251 where
437252 delta acc c =
438253 if '0' <= c && c <= '9'
@@ -440,22 +255,21 @@ finishExecute _conn q result = do
440255 else error ("finishExecute: not an int: " ++ B8.unpack str)
441256
442257throwResultError :: ByteString -> PQ.Result -> PQ.ExecStatus -> IO a
443−throwResultError _ result status = do
444− errormsg <- fromMaybe "" <$>
445− PQ.resultErrorField result PQ.DiagMessagePrimary
446− detail <- fromMaybe "" <$>
447− PQ.resultErrorField result PQ.DiagMessageDetail
448− hint <- fromMaybe "" <$>
449− PQ.resultErrorField result PQ.DiagMessageHint
450− state' <- maybe "" id <$> PQ.resultErrorField result PQ.DiagSqlstate
451− throwIO $ SqlError { sqlState = state'
452− , sqlExecStatus = status
453− , sqlErrorMsg = errormsg
454− , sqlErrorDetail = detail
455− , sqlErrorHint = hint }
258+throwResultError context result status = do
259+ errormsg <- maybe "" id <$> PQ.resultErrorMessage result
260+ statusmsg <- PQ.resStatus status
261+ state <- maybe "" id <$> PQ.resultErrorField result PQ.DiagSqlstate
262+ throwIO $ SqlError { sqlState = state
263+ , sqlNativeError = fromEnum status
264+ , sqlErrorMsg = B.concat [ context, ": ", statusmsg
265+ , ": ", errormsg ]}
456266
457267disconnectedError :: SqlError
458−disconnectedError = fatalError "connection disconnected"
268+disconnectedError = SqlError {
269+ sqlNativeError = -1,
270+ sqlErrorMsg = "connection disconnected",
271+ sqlState = ""
272+ }
459273
460274-- | Atomically perform an action with the database handle, if there is one.
461275withConnection :: Connection -> (PQ.Connection -> IO a) -> IO a
@@ -478,160 +292,19 @@ newNullConnection :: IO Connection
478292newNullConnection = do
479293 connectionHandle <- newMVar =<< PQ.newNullConnection
480294 connectionObjects <- newMVar IntMap.empty
481− connectionTempNameCounter <- newIORef 0
482295 return Connection{..}
483296
484297data Row = Row {
485298 row :: {-# UNPACK #-} !PQ.Row
299+ , typenames :: !(V.Vector ByteString)
486300 , rowresult :: !PQ.Result
487301 }
488302
489−newtype RowParser a = RP { unRP :: ReaderT Row (StateT PQ.Column Conversion) a }
303+newtype RowParser a = RP { unRP :: ReaderT Row (StateT PQ.Column Ok) a }
490304 deriving ( Functor, Applicative, Alternative, Monad )
491305
492−liftRowParser :: IO a -> RowParser a
493−liftRowParser = RP . lift . lift . liftConversion
494−
495−newtype Conversion a = Conversion { runConversion :: Connection -> IO (Ok a) }
496−
497−liftConversion :: IO a -> Conversion a
498−liftConversion m = Conversion (\_ -> Ok <$> m)
499−
500−instance Functor Conversion where
501− fmap f m = Conversion $ \conn -> (fmap . fmap) f (runConversion m conn)
502−
503−instance Applicative Conversion where
504− pure a = Conversion $ \_conn -> pure (pure a)
505− mf <*> ma = Conversion $ \conn -> do
506− okf <- runConversion mf conn
507− case okf of
508− Ok f -> (fmap . fmap) f (runConversion ma conn)
509− Errors errs -> return (Errors errs)
510−
511−instance Alternative Conversion where
512− empty = Conversion $ \_conn -> pure empty
513− ma <|> mb = Conversion $ \conn -> do
514− oka <- runConversion ma conn
515− case oka of
516− Ok _ -> return oka
517− Errors _ -> (oka <|>) <$> runConversion mb conn
518−
519−instance Monad Conversion where
520− m >>= f = Conversion $ \conn -> do
521− oka <- runConversion m conn
522− case oka of
523− Ok a -> runConversion (f a) conn
524− Errors err -> return (Errors err)
525−
526−instance MonadPlus Conversion where
527− mzero = empty
528− mplus = (<|>)
529−
530−conversionMap :: (Ok a -> Ok b) -> Conversion a -> Conversion b
531−conversionMap f m = Conversion $ \conn -> f <$> runConversion m conn
532−
533−conversionError :: Exception err => err -> Conversion a
534−conversionError err = Conversion $ \_ -> return (Errors [toException err])
535−
536−newTempName :: Connection -> IO Query
537−newTempName Connection{..} = do
538− !n <- atomicModifyIORef connectionTempNameCounter
539− (\n -> let !n' = n+1 in (n', n'))
540− return $! Query $ B8.pack $ "temp" ++ show n
541−
542−-- FIXME? What error should getNotification and getCopyData throw?
543−fdError :: ByteString -> IOError
544−fdError funcName = IOError {
545− ioe_handle = Nothing,
546− ioe_type = ResourceVanished,
547− ioe_location = B8.unpack funcName,
548− ioe_description = "failed to fetch file descriptor",
549− ioe_errno = Nothing,
550− ioe_filename = Nothing
551− }
552−
553−
554−libPQError :: ByteString -> IOError
555−libPQError desc = IOError {
556− ioe_handle = Nothing,
557− ioe_type = OtherError,
558− ioe_location = "libpq",
559− ioe_description = B8.unpack desc,
560− ioe_errno = Nothing,
561− ioe_filename = Nothing
562− }
563−
564−throwLibPQError :: PQ.Connection -> ByteString -> IO a
565−throwLibPQError conn default_desc = do
566− msg <- maybe default_desc id <$> PQ.errorMessage conn
567− throwIO $! libPQError msg
568−
569−
570−fmtError :: String -> Query -> [Action] -> a
571−fmtError msg q xs = throw FormatError {
572− fmtMessage = msg
573− , fmtQuery = q
574− , fmtParams = map twiddle xs
575− }
576− where twiddle (Plain b) = toByteString b
577− twiddle (Escape s) = s
578− twiddle (EscapeByteA s) = s
579− twiddle (EscapeIdentifier s) = s
580− twiddle (Many ys) = B.concat (map twiddle ys)
581−
582−fmtErrorBs :: Query -> [Action] -> ByteString -> a
583−fmtErrorBs q xs msg = fmtError (T.unpack $ TE.decodeUtf8 msg) q xs
584−
585−-- | Quote bytestring or throw 'FormatError'
586−quote :: Query -> [Action] -> Either ByteString ByteString -> Builder
587−quote q xs = either (fmtErrorBs q xs) (inQuotes . byteString)
588−
589−buildAction :: Connection -- ^ Connection for string escaping
590− -> Query -- ^ Query for message error
591− -> [Action] -- ^ List of parameters for message error
592− -> Action -- ^ Action to build
593− -> IO Builder
594−buildAction _ _ _ (Plain b) = pure b
595−buildAction conn q xs (Escape s) = quote q xs <$> escapeStringConn conn s
596−buildAction conn q xs (EscapeByteA s) = quote q xs <$> escapeByteaConn conn s
597−buildAction conn q xs (EscapeIdentifier s) =
598− either (fmtErrorBs q xs) byteString <$> escapeIdentifier conn s
599−buildAction conn q xs (Many ys) =
600− mconcat <$> mapM (buildAction conn q xs) ys
601−
602−checkError :: PQ.Connection -> Maybe a -> IO (Either ByteString a)
603−checkError _ (Just x) = return $ Right x
604−checkError c Nothing = Left . maybe "" id <$> PQ.errorMessage c
605−
606−escapeWrap :: (PQ.Connection -> ByteString -> IO (Maybe ByteString))
607− -> Connection
608− -> ByteString
609− -> IO (Either ByteString ByteString)
610−escapeWrap f conn s =
611− withConnection conn $ \c ->
612− f c s >>= checkError c
613−
614−escapeStringConn :: Connection -> ByteString -> IO (Either ByteString ByteString)
615−escapeStringConn = escapeWrap PQ.escapeStringConn
616−
617−escapeIdentifier :: Connection -> ByteString -> IO (Either ByteString ByteString)
618−escapeIdentifier = escapeWrap PQ.escapeIdentifier
619−
620−escapeByteaConn :: Connection -> ByteString -> IO (Either ByteString ByteString)
621−escapeByteaConn = escapeWrap PQ.escapeByteaConn
622−
623−breakOnSingleQuestionMark :: ByteString -> (ByteString, ByteString)
624−breakOnSingleQuestionMark b = go (B8.empty, b)
625− where go (x,bs) = (x `B8.append` x',bs')
626− -- seperate from first QM
627− where tup@(noQ, restWithQ) = B8.break (=='?') bs
628− -- if end of query, just return
629− -- else check for second QM in 'go2'
630− (x', bs') = maybe tup go2 $
631− -- drop found QM and peek at next char
632− B8.uncons restWithQ >>= B8.uncons . snd
633− -- another QM after the first means:
634− -- take literal QM and keep going.
635− go2 ('?', t2) = go (noQ `B8.snoc` '?',t2)
636− -- Anything else means
637− go2 _ = tup
306+getvalue :: PQ.Result -> PQ.Row -> PQ.Column -> Maybe ByteString
307+getvalue result row col = unsafePerformIO (PQ.getvalue result row col)
308+
309+nfields :: PQ.Result -> PQ.Column
310+nfields result = unsafePerformIO (PQ.nfields result)
src/Database/PostgreSQL/Simple/Internal/PQResultUtils.hsdeleted−123
@@ -1,123 +0,0 @@
1−{-# LANGUAGE CPP #-}
2−
3−------------------------------------------------------------------------------
4−-- |
5−-- Module: Database.PostgreSQL.Simple.Internal.PQResultUtils
6−-- Copyright: (c) 2011 MailRank, Inc.
7−-- (c) 2011-2012 Leon P Smith
8−-- License: BSD3
9−-- Maintainer: Leon P Smith <leon@melding-monads.com>
10−-- Stability: experimental
11−--
12−------------------------------------------------------------------------------
13−
14−
15−module Database.PostgreSQL.Simple.Internal.PQResultUtils
16− ( finishQueryWith
17− , finishQueryWithV
18− , finishQueryWithVU
19− , getRowWith
20− ) where
21−
22−import Control.Exception as E
23−import Data.ByteString (ByteString)
24−import Data.Foldable (for_)
25−import Database.PostgreSQL.Simple.FromField (ResultError(..))
26−import Database.PostgreSQL.Simple.Ok
27−import Database.PostgreSQL.Simple.Types (Query(..))
28−import Database.PostgreSQL.Simple.Internal as Base hiding (result, row)
29−import Database.PostgreSQL.Simple.TypeInfo
30−import qualified Database.PostgreSQL.LibPQ as PQ
31−import qualified Data.ByteString.Char8 as B
32−import qualified Data.Vector as V
33−import qualified Data.Vector.Mutable as MV
34−import qualified Data.Vector.Unboxed as VU
35−import qualified Data.Vector.Unboxed.Mutable as MVU
36−import Control.Monad.Trans.Reader
37−import Control.Monad.Trans.State.Strict
38−
39−finishQueryWith :: RowParser r -> Connection -> Query -> PQ.Result -> IO [r]
40−finishQueryWith parser conn q result = finishQueryWith' q result $ do
41− nrows <- PQ.ntuples result
42− ncols <- PQ.nfields result
43− forM' 0 (nrows-1) $ \row ->
44− getRowWith parser row ncols conn result
45−
46−finishQueryWithV :: RowParser r -> Connection -> Query -> PQ.Result -> IO (V.Vector r)
47−finishQueryWithV parser conn q result = finishQueryWith' q result $ do
48− nrows <- PQ.ntuples result
49− let PQ.Row nrows' = nrows
50− ncols <- PQ.nfields result
51− mv <- MV.unsafeNew (fromIntegral nrows')
52− for_ [ 0 .. nrows-1 ] $ \row -> do
53− let PQ.Row row' = row
54− value <- getRowWith parser row ncols conn result
55− MV.unsafeWrite mv (fromIntegral row') value
56− V.unsafeFreeze mv
57−
58−finishQueryWithVU :: VU.Unbox r => RowParser r -> Connection -> Query -> PQ.Result -> IO (VU.Vector r)
59−finishQueryWithVU parser conn q result = finishQueryWith' q result $ do
60− nrows <- PQ.ntuples result
61− let PQ.Row nrows' = nrows
62− ncols <- PQ.nfields result
63− mv <- MVU.unsafeNew (fromIntegral nrows')
64− for_ [ 0 .. nrows-1 ] $ \row -> do
65− let PQ.Row row' = row
66− value <- getRowWith parser row ncols conn result
67− MVU.unsafeWrite mv (fromIntegral row') value
68− VU.unsafeFreeze mv
69−
70−finishQueryWith' :: Query -> PQ.Result -> IO a -> IO a
71−finishQueryWith' q result k = do
72− status <- PQ.resultStatus result
73− case status of
74− PQ.TuplesOk -> k
75− PQ.EmptyQuery -> queryErr "query: Empty query"
76− PQ.CommandOk -> queryErr "query resulted in a command response (did you mean to use `execute` or forget a RETURNING?)"
77− PQ.CopyOut -> queryErr "query: COPY TO is not supported"
78− PQ.CopyIn -> queryErr "query: COPY FROM is not supported"
79− PQ.CopyBoth -> queryErr "query: COPY BOTH is not supported"
80− PQ.SingleTuple -> queryErr "query: single-row mode is not supported"
81− PQ.BadResponse -> throwResultError "query" result status
82− PQ.NonfatalError -> throwResultError "query" result status
83− PQ.FatalError -> throwResultError "query" result status
84− where
85− queryErr msg = throwIO $ QueryError msg q
86−
87−getRowWith :: RowParser r -> PQ.Row -> PQ.Column -> Connection -> PQ.Result -> IO r
88−getRowWith parser row ncols conn result = do
89− let rw = Row row result
90− let unCol (PQ.Col x) = fromIntegral x :: Int
91− okvc <- runConversion (runStateT (runReaderT (unRP parser) rw) 0) conn
92− case okvc of
93− Ok (val,col) | col == ncols -> return val
94− | otherwise -> do
95− vals <- forM' 0 (ncols-1) $ \c -> do
96− tinfo <- getTypeInfo conn =<< PQ.ftype result c
97− v <- PQ.getvalue result row c
98− return ( tinfo
99− , fmap ellipsis v )
100− throw (ConversionFailed
101− (show (unCol ncols) ++ " values: " ++ show vals)
102− Nothing
103− ""
104− (show (unCol col) ++ " slots in target type")
105− "mismatch between number of columns to convert and number in target type")
106− Errors [] -> throwIO $ ConversionFailed "" Nothing "" "" "unknown error"
107− Errors [x] -> throwIO x
108− Errors xs -> throwIO $ ManyErrors xs
109−
110−ellipsis :: ByteString -> ByteString
111−ellipsis bs
112− | B.length bs > 15 = B.take 10 bs `B.append` "[...]"
113− | otherwise = bs
114−
115−forM' :: (Ord n, Num n) => n -> n -> (n -> IO a) -> IO [a]
116−forM' lo hi m = loop hi []
117− where
118− loop !n !as
119− | n < lo = return as
120− | otherwise = do
121− a <- m n
122− loop (n-1) (a:as)
123−{-# INLINE forM' #-}
src/Database/PostgreSQL/Simple/LargeObjects.hs+6−7
@@ -7,16 +7,13 @@
77-- Maintainer : leon@melding-monads.com
88--
99-- Support for PostgreSQL's Large Objects; see
10−-- <https://www.postgresql.org/docs/9.5/static/largeobjects.html> for more
10+-- <http://www.postgresql.org/docs/9.1/static/largeobjects.html> for more
1111-- information.
1212--
1313-- Note that Large Object File Descriptors are only valid within a single
1414-- database transaction, so if you are interested in using anything beyond
15−-- 'loCreat', 'loCreate', and 'loUnlink', you will need to run the entire
16−-- sequence of functions in a transaction. As 'loImport' and 'loExport'
17−-- are simply C functions that call 'loCreat', 'loOpen', 'loRead', and
18−-- 'loWrite', and do not perform any transaction handling themselves,
19−-- they also need to be wrapped in an explicit transaction.
15+-- 'loCreat', 'loImport', 'loExport', and 'loUnlink', you will need to run
16+-- the entire sequence of functions in a transaction.
2017--
2118-----------------------------------------------------------------------------
2219
@@ -54,7 +51,9 @@ liftPQ str conn m = withConnection conn $ \c -> do
5451 case res of
5552 Nothing -> do
5653 msg <- maybe str id <$> PQ.errorMessage c
57− throwIO $ fatalError msg
54+ throwIO $ SqlError { sqlNativeError = -1 -- FIXME?
55+ , sqlErrorMsg = msg
56+ , sqlState = "" }
5857 Just x -> return x
5958
6059loCreat :: Connection -> IO Oid
src/Database/PostgreSQL/Simple/Newtypes.hsdeleted−49
@@ -1,49 +0,0 @@
1−{-# LANGUAGE DeriveFunctor #-}
2−{-# LANGUAGE DeriveDataTypeable #-}
3−-- | Module with newtypes suitable to usage with @DerivingVia@ or standalone.
4−--
5−-- The newtypes are named after packages they wrap.
6−module Database.PostgreSQL.Simple.Newtypes (
7− Aeson (..), getAeson,
8−) where
9−
10−import Data.Typeable (Typeable)
11−import Database.PostgreSQL.Simple.ToField (ToField (..))
12−import Database.PostgreSQL.Simple.FromField (FromField (..), fromJSONField)
13−
14−import qualified Data.Aeson as Aeson
15−
16−-------------------------------------------------------------------------------
17−-- aeson
18−-------------------------------------------------------------------------------
19−
20−-- | A newtype wrapper with 'ToField' and 'FromField' instances
21−-- based on 'Aeson.ToJSON' and 'Aeson.FromJSON' type classes from @aeson@.
22−--
23−-- Example using @DerivingVia@:
24−--
25−-- @
26−-- data Foo = Foo Int String
27−-- deriving stock (Eq, Show, Generic) -- GHC built int
28−-- deriving anyclass ('Aeson.FromJSON', 'Aeson.ToJSON') -- Derived using GHC Generics
29−-- deriving ('ToField', 'FromField') via 'Aeson' Foo -- DerivingVia
30−-- @
31−--
32−-- Example using 'Aeson' newtype directly, for more ad-hoc queries
33−--
34−-- @
35−-- execute conn "INSERT INTO tbl (fld) VALUES (?)" (Only ('Aeson' x))
36−-- @
37−--
38−-- @since 0.6.3
39−newtype Aeson a = Aeson a
40− deriving (Eq, Show, Read, Typeable, Functor)
41−
42−getAeson :: Aeson a -> a
43−getAeson (Aeson a) = a
44−
45−instance Aeson.ToJSON a => ToField (Aeson a) where
46− toField = toField . Aeson.encode . getAeson
47−
48−instance (Aeson.FromJSON a, Typeable a) => FromField (Aeson a) where
49− fromField f bs = fmap Aeson (fromJSONField f bs)
src/Database/PostgreSQL/Simple/Notification.hs+32−93
@@ -1,12 +1,9 @@
1−{-# LANGUAGE CPP #-}
2−{-# LANGUAGE NamedFieldPuns #-}
3−{-# LANGUAGE RecordWildCards #-}
1+{-# LANGUAGE RecordWildCards, NamedFieldPuns #-}
42
53-----------------------------------------------------------------------------
64-- |
75-- Module : Database.PostgreSQL.Simple.Notification
8−-- Copyright : (c) 2011-2015 Leon P Smith
9−-- (c) 2012 Joey Adams
6+-- Copyright : (c) 2011-2012 Leon P Smith
107-- License : BSD3
118--
129-- Maintainer : leon@melding-monads.com
@@ -14,49 +11,33 @@
1411--
1512-- Support for receiving asynchronous notifications via PostgreSQL's
1613-- Listen/Notify mechanism. See
17−-- <https://www.postgresql.org/docs/9.5/static/sql-notify.html> for more
14+-- <http://www.postgresql.org/docs/9.1/static/sql-notify.html> for more
1815-- information.
1916--
20−-- Note that on Windows, @getNotification@ currently uses a polling loop
21−-- of 1 second to check for more notifications, due to some inadequacies
22−-- in GHC's IO implementation and interface on that platform. See GHC
23−-- issue #7353 for more information. While this workaround is less than
24−-- ideal, notifications are still better than polling the database directly.
25−-- Notifications do not create any extra work for the backend, and are
26−-- likely cheaper on the client side as well.
27−--
28−-- <https://hackage.haskell.org/trac/ghc/ticket/7353>
29−--
3017-----------------------------------------------------------------------------
3118
3219module Database.PostgreSQL.Simple.Notification
3320 ( Notification(..)
3421 , getNotification
35− , getNotificationNonBlocking
36− , getBackendPID
22+ , getNotificationIfAvailable
3723 ) where
3824
39−import Control.Monad ( join, void )
40−import Control.Exception ( throwIO, catch )
25+import Control.Concurrent ( threadWaitRead )
26+import Control.Monad ( when )
4127import qualified Data.ByteString as B
42−import qualified Data.ByteString.Char8 as B8
4328import Database.PostgreSQL.Simple.Internal
4429import qualified Database.PostgreSQL.LibPQ as PQ
4530import System.Posix.Types ( CPid )
46−import GHC.IO.Exception ( ioe_location )
47−
48−#if defined(mingw32_HOST_OS)
49−import Control.Concurrent ( threadDelay )
50−#else
51−import GHC.Conc ( atomically )
52−import Control.Concurrent ( threadWaitReadSTM )
53−#endif
5431
5532data Notification = Notification
56− { notificationPid :: {-# UNPACK #-} !CPid
57− , notificationChannel :: {-# UNPACK #-} !B.ByteString
58− , notificationData :: {-# UNPACK #-} !B.ByteString
59− } deriving (Show, Eq)
33+ { notificationPid :: !CPid
34+ , notificationChannel :: !B.ByteString
35+ , notificationData :: !B.ByteString
36+ }
37+
38+errfd :: String
39+errfd = "Database.PostgreSQL.Simple.Notification.getNotification: \
40+ \failed to fetch file descriptor"
6041
6142convertNotice :: PQ.Notify -> Notification
6243convertNotice PQ.Notify{..}
@@ -66,62 +47,31 @@ convertNotice PQ.Notify{..}
6647
6748-- | Returns a single notification. If no notifications are available,
6849-- 'getNotification' blocks until one arrives.
69−--
70−-- It is safe to call 'getNotification' on a connection that is concurrently
71−-- being used for other purposes, note however that PostgreSQL does not
72−-- deliver notifications while a connection is inside a transaction.
7350
7451getNotification :: Connection -> IO Notification
75−getNotification conn = join $ withConnection conn fetch
52+getNotification = loop False
7653 where
77− funcName = "Database.PostgreSQL.Simple.Notification.getNotification"
78−
79− fetch c = do
80− mmsg <- PQ.notifies c
81− case mmsg of
82− Just msg -> return (return $! convertNotice msg)
83− Nothing -> do
84− mfd <- PQ.socket c
85− case mfd of
86− Nothing -> return (throwIO $! fdError funcName)
87−#if defined(mingw32_HOST_OS)
88− -- threadWaitRead doesn't work for sockets on Windows, so just
89− -- poll for input every second (PQconsumeInput is non-blocking).
90− --
91− -- We could call select(), but FFI calls can't be interrupted
92− -- with async exceptions, whereas threadDelay can.
93− Just _fd -> do
94− return (threadDelay 1000000 >> loop)
95−#else
96− -- This case fixes the race condition above. By registering
97− -- our interest in the descriptor before we drop the lock,
98− -- there is no opportunity for the descriptor index to be
99− -- reallocated on us.
100− --
101− -- (That is, assuming there isn't concurrently executing
102− -- code that manipulates the descriptor without holding
103− -- the lock... but such a major bug is likely to exhibit
104− -- itself in an at least somewhat more dramatic fashion.)
105− Just fd -> do
106− (waitRead, _) <- threadWaitReadSTM fd
107− return $ do
108− atomically waitRead `catch` (throwIO . setIOErrorLocation)
109− loop
110−#endif
111−
112− loop = join $ withConnection conn $ \c -> do
113− void $ PQ.consumeInput c
114− fetch c
115−
116− setIOErrorLocation :: IOError -> IOError
117− setIOErrorLocation err = err { ioe_location = B8.unpack funcName }
118−
54+ loop doConsume conn = do
55+ res <- withConnection conn $ \c -> do
56+ when doConsume (PQ.consumeInput c >> return ())
57+ mmsg <- PQ.notifies c
58+ case mmsg of
59+ Nothing -> do
60+ mfd <- PQ.socket c
61+ case mfd of
62+ Nothing -> fail errfd
63+ Just fd -> return (Left fd)
64+ Just msg -> return (Right msg)
65+ -- FIXME? what happens if the connection is closed/reset right here?
66+ case res of
67+ Left fd -> threadWaitRead fd >> loop True conn
68+ Right msg -> return $! convertNotice msg
11969
12070-- | Non-blocking variant of 'getNotification'. Returns a single notification,
12171-- if available. If no notifications are available, returns 'Nothing'.
12272
123−getNotificationNonBlocking :: Connection -> IO (Maybe Notification)
124−getNotificationNonBlocking conn =
73+getNotificationIfAvailable :: Connection -> IO (Maybe Notification)
74+getNotificationIfAvailable conn =
12575 withConnection conn $ \c -> do
12676 mmsg <- PQ.notifies c
12777 case mmsg of
@@ -132,14 +82,3 @@ getNotificationNonBlocking conn =
13282 case mmsg' of
13383 Just msg -> return $! Just $! convertNotice msg
13484 Nothing -> return Nothing
135−
136−-- | Returns the process 'CPid' of the backend server process
137−-- handling this connection.
138−--
139−-- The backend PID is useful for debugging purposes and for comparison
140−-- to NOTIFY messages (which include the PID of the notifying backend
141−-- process). Note that the PID belongs to a process executing on the
142−-- database server host, not the local host!
143−
144−getBackendPID :: Connection -> IO CPid
145−getBackendPID conn = withConnection conn PQ.backendPID
src/Database/PostgreSQL/Simple/Ok.hs+4−10
@@ -1,11 +1,10 @@
11{-# LANGUAGE DeriveDataTypeable #-}
22{-# LANGUAGE DeriveFunctor #-}
3−{-# LANGUAGE CPP #-}
43
54------------------------------------------------------------------------------
65-- |
76-- Module : Database.PostgreSQL.Simple.Ok
8−-- Copyright : (c) 2012-2015 Leon P Smith
7+-- Copyright : (c) 2011-2012 Leon P Smith
98-- License : BSD3
109--
1110-- Maintainer : leon@melding-monads.com
@@ -21,7 +20,7 @@
2120-- commonly-used type and typeclass included in @base@.
2221--
2322-- Extending the failure case to a list of 'SomeException's enables a
24−-- more sensible 'Alternative' instance definitions: '<|>' concatenates
23+-- more sensible 'Alternative' instance definitions: '<|>' concatinates
2524-- the list of exceptions when both cases fail, and 'empty' is defined as
2625-- 'Errors []'. Though '<|>' one could pick one of two exceptions, and
2726-- throw away the other, and have 'empty' provide a generic exception,
@@ -37,8 +36,6 @@ import Control.Exception
3736import Control.Monad(MonadPlus(..))
3837import Data.Typeable
3938
40−import qualified Control.Monad.Fail as Fail
41−
4239-- FIXME: [SomeException] should probably be something else, maybe
4340-- a difference list (or a tree?)
4441
@@ -72,14 +69,11 @@ instance MonadPlus Ok where
7269 mplus = (<|>)
7370
7471instance Monad Ok where
72+ return = Ok
73+
7574 Errors es >>= _ = Errors es
7675 Ok a >>= f = f a
7776
78−#if !(MIN_VERSION_base(4,13,0))
79− fail = Fail.fail
80−#endif
81−
82−instance Fail.MonadFail Ok where
8377 fail str = Errors [SomeException (ErrorCall str)]
8478
8579-- | a way to reify a list of exceptions into a single exception
src/Database/PostgreSQL/Simple/Range.hsdeleted−317
@@ -1,317 +0,0 @@
1−{-# LANGUAGE DeriveDataTypeable #-}
2−{-# LANGUAGE DeriveFunctor #-}
3−{-# LANGUAGE OverloadedStrings #-}
4−{-# LANGUAGE FlexibleInstances #-}
5−
6−------------------------------------------------------------------------------
7−-- |
8−-- Module: Database.PostgreSQL.Simple.Range
9−-- Copyright: (c) 2014-2015 Leonid Onokhov
10−-- (c) 2014-2015 Leon P Smith
11−-- License: BSD3
12−-- Maintainer: Leon P Smith <leon@melding-monads.com>
13−--
14−------------------------------------------------------------------------------
15−
16−module Database.PostgreSQL.Simple.Range
17− ( RangeBound(..)
18− , PGRange(..)
19− , empty
20− , isEmpty, isEmptyBy
21− , contains, containsBy
22− , fromFieldRange
23− ) where
24−
25−import Control.Applicative hiding (empty)
26−import Data.Attoparsec.ByteString.Char8 (Parser, parseOnly)
27−import qualified Data.Attoparsec.ByteString.Char8 as A
28−import qualified Data.ByteString as B
29−import Data.ByteString.Builder
30− ( Builder, byteString, lazyByteString, char8
31− , intDec, int8Dec, int16Dec, int32Dec, int64Dec, integerDec
32− , wordDec, word8Dec, word16Dec, word32Dec, word64Dec
33− , doubleDec, floatDec )
34−import Data.Int (Int16, Int32, Int64,
35− Int8)
36−import Data.Function (on)
37−import Data.Monoid (mempty)
38−import Data.Scientific (Scientific)
39−import qualified Data.Text.Lazy.Builder as LT
40−import qualified Data.Text.Lazy.Encoding as LT
41−import Data.Time.Compat (Day, LocalTime,
42− NominalDiffTime,
43− TimeOfDay, UTCTime,
44− ZonedTime,
45− zonedTimeToUTC)
46−import Data.Typeable (Typeable)
47−import Data.Word (Word, Word16, Word32,
48− Word64, Word8)
49−
50−import Database.PostgreSQL.Simple.Compat (scientificBuilder, (<>), toByteString)
51−import Database.PostgreSQL.Simple.FromField
52−import Database.PostgreSQL.Simple.Time
53− hiding (PosInfinity, NegInfinity)
54−-- import qualified Database.PostgreSQL.Simple.Time as Time
55−import Database.PostgreSQL.Simple.ToField
56−
57−-- | Represents boundary of a range
58−data RangeBound a = NegInfinity
59− | Inclusive !a
60− | Exclusive !a
61− | PosInfinity
62− deriving (Show, Typeable, Eq, Functor)
63−
64−-- | Generic range type
65−data PGRange a = PGRange !(RangeBound a) !(RangeBound a)
66− deriving (Show, Typeable, Functor)
67−
68−empty :: PGRange a
69−empty = PGRange PosInfinity NegInfinity
70−
71−instance Ord a => Eq (PGRange a) where
72− x == y = eq x y || (isEmpty x && isEmpty y)
73− where eq (PGRange a m) (PGRange b n) = a == b && m == n
74−
75−isEmptyBy :: (a -> a -> Ordering) -> PGRange a -> Bool
76−isEmptyBy cmp v =
77− case v of
78− (PGRange PosInfinity _) -> True
79− (PGRange _ NegInfinity) -> True
80− (PGRange NegInfinity _) -> False
81− (PGRange _ PosInfinity) -> False
82− (PGRange (Inclusive x) (Inclusive y)) -> cmp x y == GT
83− (PGRange (Inclusive x) (Exclusive y)) -> cmp x y /= LT
84− (PGRange (Exclusive x) (Inclusive y)) -> cmp x y /= LT
85− (PGRange (Exclusive x) (Exclusive y)) -> cmp x y /= LT
86−
87−-- | Is a range empty? If this returns 'True', then the 'contains'
88−-- predicate will always return 'False'. However, if this returns
89−-- 'False', it is not necessarily true that there exists a point for
90−-- which 'contains' returns 'True'.
91−-- Consider @'PGRange' ('Excludes' 2) ('Excludes' 3) :: PGRange Int@,
92−-- for example.
93−isEmpty :: Ord a => PGRange a -> Bool
94−isEmpty = isEmptyBy compare
95−
96−
97−-- | Does a range contain a given point? Note that in some cases, this may
98−-- not correspond exactly with a server-side computation. Consider @UTCTime@
99−-- for example, which has a resolution of a picosecond, whereas postgresql's
100−-- @timestamptz@ types have a resolution of a microsecond. Putting such
101−-- Haskell values into the database will result in them being rounded, which
102−-- can change the value of the containment predicate.
103−
104−contains :: Ord a => PGRange a -> (a -> Bool)
105−contains = containsBy compare
106−
107−containsBy :: (a -> a -> Ordering) -> PGRange a -> (a -> Bool)
108−containsBy cmp rng x =
109− case rng of
110− PGRange _lb NegInfinity -> False
111− PGRange lb ub -> checkLB lb x && checkUB ub x
112− where
113− checkLB lb y =
114− case lb of
115− NegInfinity -> True
116− PosInfinity -> False
117− Inclusive a -> cmp a y /= GT
118− Exclusive a -> cmp a y == LT
119−
120− checkUB ub y =
121− case ub of
122− NegInfinity -> False
123− PosInfinity -> True
124− Inclusive z -> cmp y z /= GT
125− Exclusive z -> cmp y z == LT
126−
127−lowerBound :: Parser (a -> RangeBound a)
128−lowerBound = (A.char '(' *> pure Exclusive) <|> (A.char '[' *> pure Inclusive)
129−{-# INLINE lowerBound #-}
130−
131−upperBound :: Parser (a -> RangeBound a)
132−upperBound = (A.char ')' *> pure Exclusive) <|> (A.char ']' *> pure Inclusive)
133−{-# INLINE upperBound #-}
134−
135−-- | Generic range parser
136−pgrange :: Parser (RangeBound B.ByteString, RangeBound B.ByteString)
137−pgrange = do
138− lb <- lowerBound
139− v1 <- (A.char ',' *> "") <|> (rangeElem (==',') <* A.char ',')
140− v2 <- rangeElem $ \c -> c == ')' || c == ']'
141− ub <- upperBound
142− A.endOfInput
143− let low = if B.null v1 then NegInfinity else lb v1
144− up = if B.null v2 then PosInfinity else ub v2
145− return (low, up)
146−
147−rangeElem :: (Char -> Bool) -> Parser B.ByteString
148−rangeElem end = (A.char '"' *> doubleQuoted)
149− <|> A.takeTill end
150−{-# INLINE rangeElem #-}
151−
152−-- | Simple double quoted value parser
153−doubleQuoted :: Parser B.ByteString
154−doubleQuoted = toByteString <$> go mempty
155− where
156− go acc = do
157− h <- byteString <$> A.takeTill (\c -> c == '\\' || c == '"')
158− let rest = do
159− start <- A.anyChar
160− case start of
161− '\\' -> do
162− c <- A.anyChar
163− go (acc <> h <> char8 c)
164− '"' -> (A.char '"' *> go (acc <> h <> char8 '"'))
165− <|> pure (acc <> h)
166− _ -> error "impossible in doubleQuoted"
167− rest
168−
169−rangeToBuilder :: Ord a => (a -> Builder) -> PGRange a -> Builder
170−rangeToBuilder = rangeToBuilderBy compare
171−
172−-- | Generic range to builder for plain values
173−rangeToBuilderBy :: (a -> a -> Ordering) -> (a -> Builder) -> PGRange a -> Builder
174−rangeToBuilderBy cmp f x =
175− if isEmptyBy cmp x
176− then byteString "'empty'"
177− else let (PGRange a b) = x
178− in buildLB a <> buildUB b
179− where
180− buildLB NegInfinity = byteString "'[,"
181− buildLB (Inclusive v) = byteString "'[\"" <> f v <> byteString "\","
182− buildLB (Exclusive v) = byteString "'(\"" <> f v <> byteString "\","
183− buildLB PosInfinity = error "impossible in rangeToBuilder"
184−
185− buildUB NegInfinity = error "impossible in rangeToBuilder"
186− buildUB (Inclusive v) = char8 '"' <> f v <> byteString "\"]'"
187− buildUB (Exclusive v) = char8 '"' <> f v <> byteString "\")'"
188− buildUB PosInfinity = byteString "]'"
189−{-# INLINE rangeToBuilder #-}
190−
191−
192−instance (FromField a, Typeable a) => FromField (PGRange a) where
193− fromField = fromFieldRange fromField
194−
195−fromFieldRange :: Typeable a => FieldParser a -> FieldParser (PGRange a)
196−fromFieldRange fromField' f mdat = do
197− info <- typeInfo f
198− case info of
199− Range{} ->
200− let f' = f { typeOid = typoid (rngsubtype info) }
201− in case mdat of
202− Nothing -> returnError UnexpectedNull f ""
203− Just "empty" -> pure $ empty
204− Just bs ->
205− let parseIt NegInfinity = pure NegInfinity
206− parseIt (Inclusive v) = Inclusive <$> fromField' f' (Just v)
207− parseIt (Exclusive v) = Exclusive <$> fromField' f' (Just v)
208− parseIt PosInfinity = pure PosInfinity
209− in case parseOnly pgrange bs of
210− Left e -> returnError ConversionFailed f e
211− Right (lb,ub) -> PGRange <$> parseIt lb <*> parseIt ub
212− _ -> returnError Incompatible f ""
213−
214−
215−instance ToField (PGRange Int8) where
216− toField = Plain . rangeToBuilder int8Dec
217− {-# INLINE toField #-}
218−
219−instance ToField (PGRange Int16) where
220− toField = Plain . rangeToBuilder int16Dec
221− {-# INLINE toField #-}
222−
223−instance ToField (PGRange Int32) where
224− toField = Plain . rangeToBuilder int32Dec
225− {-# INLINE toField #-}
226−
227−instance ToField (PGRange Int) where
228− toField = Plain . rangeToBuilder intDec
229− {-# INLINE toField #-}
230−
231−instance ToField (PGRange Int64) where
232− toField = Plain . rangeToBuilder int64Dec
233− {-# INLINE toField #-}
234−
235−instance ToField (PGRange Integer) where
236− toField = Plain . rangeToBuilder integerDec
237− {-# INLINE toField #-}
238−
239−instance ToField (PGRange Word8) where
240− toField = Plain . rangeToBuilder word8Dec
241− {-# INLINE toField #-}
242−
243−instance ToField (PGRange Word16) where
244− toField = Plain . rangeToBuilder word16Dec
245− {-# INLINE toField #-}
246−
247−instance ToField (PGRange Word32) where
248− toField = Plain . rangeToBuilder word32Dec
249− {-# INLINE toField #-}
250−
251−instance ToField (PGRange Word) where
252− toField = Plain . rangeToBuilder wordDec
253− {-# INLINE toField #-}
254−
255−instance ToField (PGRange Word64) where
256− toField = Plain . rangeToBuilder word64Dec
257− {-# INLINE toField #-}
258−
259−instance ToField (PGRange Float) where
260− toField = Plain . rangeToBuilder floatDec
261− {-# INLINE toField #-}
262−
263−instance ToField (PGRange Double) where
264− toField = Plain . rangeToBuilder doubleDec
265− {-# INLINE toField #-}
266−
267−instance ToField (PGRange Scientific) where
268− toField = Plain . rangeToBuilder f
269− where
270− f = lazyByteString . LT.encodeUtf8 . LT.toLazyText . scientificBuilder
271− {-# INLINE toField #-}
272−
273−instance ToField (PGRange UTCTime) where
274− toField = Plain . rangeToBuilder utcTimeToBuilder
275− {-# INLINE toField #-}
276−
277−instance ToField (PGRange ZonedTime) where
278− toField = Plain . rangeToBuilderBy cmpZonedTime zonedTimeToBuilder
279− {-# INLINE toField #-}
280−
281−cmpZonedTime :: ZonedTime -> ZonedTime -> Ordering
282−cmpZonedTime = compare `on` zonedTimeToUTC -- FIXME: optimize
283−
284−instance ToField (PGRange LocalTime) where
285− toField = Plain . rangeToBuilder localTimeToBuilder
286− {-# INLINE toField #-}
287−
288−instance ToField (PGRange Day) where
289− toField = Plain . rangeToBuilder dayToBuilder
290− {-# INLINE toField #-}
291−
292−instance ToField (PGRange TimeOfDay) where
293− toField = Plain . rangeToBuilder timeOfDayToBuilder
294− {-# INLINE toField #-}
295−
296−instance ToField (PGRange UTCTimestamp) where
297− toField = Plain . rangeToBuilder utcTimestampToBuilder
298− {-# INLINE toField #-}
299−
300−instance ToField (PGRange ZonedTimestamp) where
301− toField = Plain . rangeToBuilderBy cmpZonedTimestamp zonedTimestampToBuilder
302− {-# INLINE toField #-}
303−
304−cmpZonedTimestamp :: ZonedTimestamp -> ZonedTimestamp -> Ordering
305−cmpZonedTimestamp = compare `on` (zonedTimeToUTC <$>)
306−
307−instance ToField (PGRange LocalTimestamp) where
308− toField = Plain . rangeToBuilder localTimestampToBuilder
309− {-# INLINE toField #-}
310−
311−instance ToField (PGRange Date) where
312− toField = Plain . rangeToBuilder dateToBuilder
313− {-# INLINE toField #-}
314−
315−instance ToField (PGRange NominalDiffTime) where
316− toField = Plain . rangeToBuilder nominalDiffTimeToBuilder
317− {-# INLINE toField #-}
src/Database/PostgreSQL/Simple/SqlQQ.hs+23−37
@@ -1,13 +1,7 @@
1−{-# LANGUAGE CPP #-}
2−#if __GLASGOW_HASKELL__ >= 800
3−{-# LANGUAGE TemplateHaskellQuotes #-}
4−#else
5−{-# LANGUAGE TemplateHaskell #-}
6−#endif
71------------------------------------------------------------------------------
82-- |
93-- Module: Database.PostgreSQL.Simple.SqlQQ
10−-- Copyright: (c) 2011-2012 Leon P Smith
4+-- Copyright: (c) 2011 Leon P Smith
115-- License: BSD3
126-- Maintainer: Leon P Smith <leon@melding-monads.com>
137-- Stability: experimental
@@ -15,11 +9,10 @@
159------------------------------------------------------------------------------
1610
1711module Database.PostgreSQL.Simple.SqlQQ (sql) where
18−import Database.PostgreSQL.Simple.Types (Query)
12+
1913import Language.Haskell.TH
2014import Language.Haskell.TH.Quote
2115import Data.Char
22−import Data.String
2316
2417-- | 'sql' is a quasiquoter that eases the syntactic burden
2518-- of writing big sql statements in Haskell source code. For example:
@@ -34,18 +27,16 @@ import Data.String
3427-- > LIMIT 100 |]
3528-- > (beginTime,endTime,string)
3629--
37−-- This quasiquoter returns a literal string expression of type 'Query',
38−-- and attempts to minimize whitespace; otherwise the above query would
39−-- consist of approximately half whitespace when sent to the database
40−-- backend. It also recognizes and strips out standard sql comments "--".
30+-- This quasiquoter attempts to mimimize whitespace; otherwise the
31+-- above query would consist of approximately half whitespace when sent
32+-- to the database backend.
4133--
4234-- The implementation of the whitespace reducer is currently incomplete.
4335-- Thus it can mess up your syntax in cases where whitespace should be
4436-- preserved as-is. It does preserve whitespace inside standard SQL string
4537-- literals. But it can get confused by the non-standard PostgreSQL string
4638-- literal syntax (which is the default setting in PostgreSQL 8 and below),
47−-- the extended escape string syntax, quoted identifiers, and other similar
48−-- constructs.
39+-- the extended escape string syntax, and other similar constructs.
4940--
5041-- Of course, this caveat only applies to text written inside the SQL
5142-- quasiquoter; whitespace reduction is a compile-time computation and
@@ -57,34 +48,29 @@ import Data.String
5748
5849sql :: QuasiQuoter
5950sql = QuasiQuoter
60− { quotePat = error "Database.PostgreSQL.Simple.SqlQQ.sql: quasiquoter used in pattern context"
61− , quoteType = error "Database.PostgreSQL.Simple.SqlQQ.sql: quasiquoter used in type context"
51+ { quotePat = error "Database.PostgreSQL.Simple.SqlQQ.sql:\
52+ \ quasiquoter used in pattern context"
53+ , quoteType = error "Database.PostgreSQL.Simple.SqlQQ.sql:\
54+ \ quasiquoter used in type context"
6255 , quoteExp = sqlExp
63− , quoteDec = error "Database.PostgreSQL.Simple.SqlQQ.sql: quasiquoter used in declaration context"
56+ , quoteDec = error "Database.PostgreSQL.Simple.SqlQQ.sql:\
57+ \ quasiquoter used in declaration context"
6458 }
6559
6660sqlExp :: String -> Q Exp
67−sqlExp = appE [| fromString :: String -> Query |] . stringE . minimizeSpace
68−
69−minimizeSpace :: String -> String
70−minimizeSpace = drop 1 . reduceSpace
61+sqlExp = stringE . outstring . dropSpace
7162 where
72− needsReduced [] = False
73− needsReduced ('-':'-':_) = True
74− needsReduced (x:_) = isSpace x
75−
76− reduceSpace xs =
77− case dropWhile isSpace xs of
78− [] -> []
79− ('-':'-':ys) -> reduceSpace (dropWhile (/= '\n') ys)
80− ys -> ' ' : insql ys
63+ dropSpace = dropWhile isSpace
8164
82− insql ('\'':xs) = '\'' : instring xs
83− insql xs | needsReduced xs = reduceSpace xs
84− insql (x:xs) = x : insql xs
85− insql [] = []
65+ outstring ('\'':xs) = '\'' : instring xs
66+ outstring (x:xs) | isSpace x = case dropSpace xs of
67+ [] -> []
68+ ys -> ' ' : outstring ys
69+ | otherwise = x : outstring xs
70+ outstring [] = []
8671
8772 instring ('\'':'\'':xs) = '\'':'\'': instring xs
88− instring ('\'':xs) = '\'': insql xs
73+ instring ('\'':xs) = '\'': outstring xs
8974 instring (x:xs) = x : instring xs
90− instring [] = error "Database.PostgreSQL.Simple.SqlQQ.sql: string literal not terminated"
75+ instring [] = error "Database.PostgreSQL.Simple.SqlQQ.sql:\
76+ \ string literal not terminated"
src/Database/PostgreSQL/Simple/Time.hsdeleted−246
@@ -1,246 +0,0 @@
1−{- |
2−Module: Database.PostgreSQL.Simple.Time
3−Copyright: (c) 2012-2015 Leon P Smith
4−License: BSD3
5−Maintainer: Leon P Smith <leon@melding-monads.com>
6−Stability: experimental
7−
8−This module provides time types that supports positive and negative
9−infinity, as well as some functions for converting to and from strings.
10−
11−Also, this module also contains commentary regarding postgresql's timestamp
12−types, civil timekeeping in general, and how it relates to
13−postgresql-simple. You can read more about PostgreSQL's date and time types
14−at <https://www.postgresql.org/docs/9.5/static/datatype-datetime.html>,
15−and the IANA time zone database at <https://en.wikipedia.org/wiki/Tz_database>.
16−
17−Stack Overflow also has some excellent commentary on time, if it is a
18−wiki page or a highly upvoted question and answer. If the answer regarding
19−time has not received about a hundred upvotes at least, then the answer is
20−almost invariably completely and painfully wrong, even if it's the chosen
21−answer or the most highly upvoted answer to a question.
22−
23−PostgreSQL's @timestamp with time zone@ (hereafter, @timestamptz@) can be
24−converted to Haskell's 'Data.Time.UTCTime' and 'Data.Time.ZonedTime' types,
25−because values of these types represent a self-contained, unambiguous point
26−in time. PostgreSQL's @timestamp without time zone@ (hereafter, @timestamp@)
27−can be converted to Haskell's 'Data.Time.LocalTime', because values of these
28−types are ambiguous by themselves, and require context to disambiguate.
29−
30−While this behavior may be superficially counterintuitive because the
31−names might suggest otherwise, this behavior is correct. In fact,
32−the \"timezone\" language in both the postgresql and haskell types would
33−be better read as \"offset (from UTC)\", thus we have postgresql's
34−\"timestamp with offset\" corresponding to Haskell's \"time with the
35−offset \'zero\'\" and Haskell's \"time with an offset (that might be
36−nonzero)\". Similarly, postgresql's \"timestamp without an offset\"
37−corresponds to Haskell's \"local time (without an offset)\".
38−
39−It's important to distinguish between an offset, a standard time, and
40−a time zone. An offset is simply a difference of a local time from UTC,
41−such as @+00@, @-05@, or @+05:30@. A standard time specifies an offset
42−(which may vary throughout the year, due to daylight savings) that a
43−region follows, such as Universal Coordinated Time (UTC), Eastern Standard
44−Time\/Eastern Daylight Time (EST\/EDT), or India Standard Time (IST).
45−And a time zone, much like a standard time, is a function from
46−timestamps to offsets.
47−
48−A time zone is different from a standard time because different regions
49−inside a standard time can be governed by different civil authorities with
50−different laws and thus have different histories of civil time. An IANA
51−time zone is any region of the world that has had the same history of
52−civil time since @1970-01-01 00:00+00@.
53−
54−For example, as of today, both @America\/New_York@ and
55−@America\/Indiana\/Indianapolis@ are on the EST\/EDT time standard, but
56−Indiana used to be on Central Standard Time until 1942, and did not observe
57−daylight savings time (EST only) until 2006. Thus, the choice between
58−these two time zones still matters if you are dealing with timestamps
59−prior to 2006, and could become relevant again if (most of) Indiana
60−moves back to Central Time. (Of course, if the Central to Eastern switch
61−was the only difference, then these two time zones would be the same in
62−IANA's eyes, due to their cutoff date of 1970-01-01.)
63−
64−Getting back to practicalities, PostgreSQL's @timestamptz@ type does not
65−actually store an offset; rather, it uses the offset provided to calculate
66−UTC, and stores the timestamp as UTC. If an offset is not provided, the
67−given timestamp is assumed to be a local time for whatever the @timezone@
68−variable is set to, and the IANA TZ database is consulted to calculate an
69−offset from UTC for the time in question.
70−
71−Note that while most (local timestamp, time zone) pairs correspond to exactly
72−one UTC timestamp, some correspond to two UTC timestamps, while others
73−correspond to none at all. The ambiguous case occurs when the civil time
74−is rolled back, making a calendar day longer than 24 hours. In this case,
75−PostgreSQL silently chooses the second, later possibility. The inconsistent
76−case occurs when the civil time is moved forward, making a calendar day less
77−than 24 hours. In this case, PostgreSQL silently assumes the local time
78−was read off a clock that had not been moved forward at the prescribed time,
79−and moves the clock forward for you. Thus, converting from local time
80−to UTC need not be monotonic, if these inconsistent cases are allowed.
81−
82−When retrieving a @timestamptz@, the backend looks at the @time zone@
83−connection variable and then consults the IANA TZ database to calculate
84−an offset for the timestamp in the given time zone.
85−
86−Note that while some of the information contained in the IANA TZ database
87−is a bit of a standardized fiction, the conversion from UTC time to a
88−(local time, offset) pair in a particular time zone is always unambiguous,
89−and the result can always be unambiguously converted back to UTC. Thus,
90−postgresql-simple can interpret such a result as a 'Data.Time.ZonedTime',
91−or use the offset to convert back to 'Data.Time.UTCTime'.
92−
93−By contrast, the @timestamp@ type ignores any offsets provided to it,
94−and never sends back an offset. Thus, postgresql-simple equates this
95−with 'Data.Time.LocalTime', which has no concept of an offset. One can
96−convert between @timestamptz@ and @timestamp@ using the @AT TIME ZONE@
97−operator, whose semantics also demonstrates that @timestamptz@ is
98−'Data.Time.UTCTime' whereas @timestamp@ is 'Data.Time.LocalTime'.
99−
100−PostgreSQL's @timezone@ is a per-connection variable that by default is
101−initialized to @\'localtime\'@, which normally corresponds to the server's
102−time zone. However, this default can be modified on the server side for an
103−entire cluster, or on a per-user or per-database basis. Moreover, a client
104−can modify their instance of the variable at any time, and can apply that
105−change to the remaining duration of the connection, the current transaction,
106−or the execution context of a server-side function. In addition, upon
107−connection initialization, the libpq client checks for the existence of
108−the @PGTZ@ environment variable, and if it exists, modifies @timezone@
109−accordingly.
110−
111−With a few caveats, postgresql-simple is designed so that you can both send
112−and receive timestamps with the server and get a correct result, no matter
113−what the @timezone@ setting is. But it is important to understand the caveats:
114−
115−1. The correctness of server-side computations can depend on the @timezone@
116− setting. Examples include adding an @interval@ to a @timestamptz@, or
117− type casting between @timestamp@ and @timestamptz@, or applying
118− the @DATE@ function to a @timestamptz@.
119−
120−2. The (localtime, offset) pair contained in a 'Data.Time.ZonedTime' result
121− will depend on the @timezone@ setting, although the result will always
122− represent the same instant in time regardless of the time zone.
123−
124−3. Sending a 'Data.Time.LocalTime' and interpreting it as a @timestamptz@
125− can be useful, as it will be converted to UTC via the tz database,
126− but correctness will depend on the @timezone@ setting. You may prefer
127− to use an explicit @AT TIME ZONE@ conversion instead, which would avoid
128− this contextual dependence.
129−
130−Furthermore, although these following points don't involve the @timezone@
131−setting, they are related to the last point above:
132−
133−1. Sending a 'Data.Time.UTCTime' and interpreting it as a @timestamp@ can
134− be useful. In practice, the most common context used to disambiguate
135− @timestamp@ is that it represents UTC, and this coding technique will
136− work as expected in this situation.
137−
138−2. Sending a 'Data.Time.ZonedTime' and interpreting it as a @timestamp@ is
139− almost always the wrong thing to do, as the offset will be ignored and
140− discarded. This is likely to lead to inconsistencies in the database,
141− and may lead to partial data loss.
142−
143−When dealing with local timestamps that refer to the future, it is often
144−useful to store it as a local time in a @timestamp@ column and store the
145−time zone in a second column. One reason to do this is so that you can
146−convert to UTC on the fly as needed, and be protected against future changes
147−to the TZ database due to changes in local time standards. In any case,
148−'Data.Time.ZonedTime' is not suitable for this application, because despite
149−its name, it represents an offset and not a time zone. Time zones can change;
150−offsets do not. In reality, we can't convert a local timestamp that occurs
151−sufficiently far in the future to UTC, because we don't know how to do it yet.
152−
153−There are a few limitations and caveats that one might need to be aware
154−of with the current implementation when dealing with older timestamps:
155−
156−For sufficiently old timestamps in almost all time zones, the IANA TZ
157−database specifies offsets from UTC that is not an integral number of
158−minutes. This corresponds to local mean time; that is, astronomical
159−time in the city that defines the time zone. Different time zones moved
160−away from local mean time to a standard time at different points in
161−history, so \"sufficiently old\" depends on the time zone in question.
162−
163−Thus, when retrieving a @timestamptz@ postgresql will in some cases
164−provide seconds in the offset. For example:
165−
166−@
167−$ psql
168−psql (9.4.5)
169−Type \"help\" for help.
170−
171−lpsmith=> SET timezone TO \'America/New_York\';
172−SET
173−lpsmith=> VALUES (\'1883-11-18 16:59:59+00\'::timestamptz),
174− (\'1883-11-18 17:00:00+00\'::timestamptz);
175− column1
176−------------------------------
177− 1883-11-18 12:03:57-04:56:02
178− 1883-11-18 12:00:00-05
179−(2 rows)
180−@
181−
182−Both of these timestamps can be parsed as a 'Data.Time.UTCTime' type,
183−however 'Data.Time.ZonedTime' will fail on the former timestamp.
184−Because 'Data.Time.ZonedTime' assumes that offsets are an integer number
185−of minutes, there isn't an particularly good solution here.
186−
187−PostgreSQL, like most software, uses the proleptic Gregorian calendar
188−for its date calculations, extending the Gregorian calendar backwards
189−in time before its introduction and pretending that the Julian calendar
190−does not exist. For most purposes, the adoption of the Gregorian calendar
191−ranges from @1582-10-15@ to @1923-03-01@, depending on location and
192−sometimes even political allegiances within a single location.
193−
194−Timestamps BCE are not supported. For example, PostgreSQL
195−will emit \"@0045-01-01 BC@\" for the first proleptic Gregorian day of
196−the year the Roman Empire adopted the Julian Calendar, but
197−postgresql-simple does not (yet?) have the ability to either parse or
198−generate this syntax. Unfortunately this syntax isn't convenient to
199−print or especially parse.
200−
201−Also, postgresql itself cannot parse or print dates before @4714-11-24 BC@,
202−which is the Julian date on the proleptic Gregorian Calendar. Although
203−postgresql's timestamp types are perfectly capable of representing timestamps
204−nearly 300,000 years in the past, using this would require postgresql-simple
205−and other client programs to support binary parameters and results.
206−
207−Dealing with years BCE is also complicated slightly by the fact that
208−Haskell's time library has a year \"0000\", which is a convention often
209−used by astronomers, while postgresql adopts the more historically
210−accurate convention that there is no year zero, but rather \"1 BCE\"
211−was immediately followed by \"1 CE\".
212−
213−-}
214−
215−module Database.PostgreSQL.Simple.Time
216− ( Unbounded(..)
217− , Date
218− , UTCTimestamp
219− , ZonedTimestamp
220− , LocalTimestamp
221− , parseDay
222− , parseUTCTime
223− , parseZonedTime
224− , parseLocalTime
225− , parseTimeOfDay
226− , parseDate
227− , parseUTCTimestamp
228− , parseZonedTimestamp
229− , parseLocalTimestamp
230− , parseCalendarDiffTime
231− , dayToBuilder
232− , utcTimeToBuilder
233− , zonedTimeToBuilder
234− , localTimeToBuilder
235− , timeOfDayToBuilder
236− , timeZoneToBuilder
237− , dateToBuilder
238− , utcTimestampToBuilder
239− , zonedTimestampToBuilder
240− , localTimestampToBuilder
241− , unboundedToBuilder
242− , nominalDiffTimeToBuilder
243− , calendarDiffTimeToBuilder
244− ) where
245−
246−import Database.PostgreSQL.Simple.Time.Implementation
src/Database/PostgreSQL/Simple/Time/Implementation.hsdeleted−176
@@ -1,176 +0,0 @@
1−------------------------------------------------------------------------------
2−-- |
3−-- Module: Database.PostgreSQL.Simple.Time.Implementation
4−-- Copyright: (c) 2012-2015 Leon P Smith
5−-- License: BSD3
6−-- Maintainer: Leon P Smith <leon@melding-monads.com>
7−-- Stability: experimental
8−--
9−------------------------------------------------------------------------------
10−
11−{-# LANGUAGE DeriveDataTypeable, DeriveFunctor #-}
12−
13−module Database.PostgreSQL.Simple.Time.Implementation where
14−
15−import Prelude hiding (take)
16−import Data.ByteString.Builder(Builder, byteString)
17−import Data.ByteString.Builder.Prim(primBounded)
18−import Control.Arrow((***))
19−import Control.Applicative
20−import qualified Data.ByteString as B
21−import Data.Time.Compat (LocalTime, UTCTime, ZonedTime, Day, TimeOfDay, TimeZone, NominalDiffTime, utc)
22−import Data.Time.LocalTime.Compat (CalendarDiffTime)
23−import Data.Typeable
24−import Data.Maybe (fromMaybe)
25−import qualified Data.Attoparsec.ByteString.Char8 as A
26−import Database.PostgreSQL.Simple.Compat ((<>))
27−import qualified Database.PostgreSQL.Simple.Time.Internal.Parser as TP
28−import qualified Database.PostgreSQL.Simple.Time.Internal.Printer as TPP
29−
30−data Unbounded a
31− = NegInfinity
32− | Finite !a
33− | PosInfinity
34− deriving (Eq, Ord, Typeable, Functor)
35−
36−instance Show a => Show (Unbounded a) where
37− showsPrec prec x rest
38− = case x of
39− NegInfinity -> "-infinity" <> rest
40− Finite time -> showsPrec prec time rest
41− PosInfinity -> "infinity" <> rest
42−
43−instance Read a => Read (Unbounded a) where
44− readsPrec prec = readParen False $ \str -> case str of
45− ('-':'i':'n':'f':'i':'n':'i':'t':'y':xs) -> [(NegInfinity,xs)]
46− ( 'i':'n':'f':'i':'n':'i':'t':'y':xs) -> [(PosInfinity,xs)]
47− xs -> map (Finite *** id) (readsPrec prec xs)
48−
49−type LocalTimestamp = Unbounded LocalTime
50−type UTCTimestamp = Unbounded UTCTime
51−type ZonedTimestamp = Unbounded ZonedTime
52−type Date = Unbounded Day
53−
54−parseUTCTime :: B.ByteString -> Either String UTCTime
55−parseUTCTime = A.parseOnly (getUTCTime <* A.endOfInput)
56−
57−parseZonedTime :: B.ByteString -> Either String ZonedTime
58−parseZonedTime = A.parseOnly (getZonedTime <* A.endOfInput)
59−
60−parseLocalTime :: B.ByteString -> Either String LocalTime
61−parseLocalTime = A.parseOnly (getLocalTime <* A.endOfInput)
62−
63−parseDay :: B.ByteString -> Either String Day
64−parseDay = A.parseOnly (getDay <* A.endOfInput)
65−
66−parseTimeOfDay :: B.ByteString -> Either String TimeOfDay
67−parseTimeOfDay = A.parseOnly (getTimeOfDay <* A.endOfInput)
68−
69−parseUTCTimestamp :: B.ByteString -> Either String UTCTimestamp
70−parseUTCTimestamp = A.parseOnly (getUTCTimestamp <* A.endOfInput)
71−
72−parseZonedTimestamp :: B.ByteString -> Either String ZonedTimestamp
73−parseZonedTimestamp = A.parseOnly (getZonedTimestamp <* A.endOfInput)
74−
75−parseLocalTimestamp :: B.ByteString -> Either String LocalTimestamp
76−parseLocalTimestamp = A.parseOnly (getLocalTimestamp <* A.endOfInput)
77−
78−parseDate :: B.ByteString -> Either String Date
79−parseDate = A.parseOnly (getDate <* A.endOfInput)
80−
81−parseCalendarDiffTime :: B.ByteString -> Either String CalendarDiffTime
82−parseCalendarDiffTime = A.parseOnly (getCalendarDiffTime <* A.endOfInput)
83−
84−getUnbounded :: A.Parser a -> A.Parser (Unbounded a)
85−getUnbounded getFinite
86− = (pure NegInfinity <* A.string "-infinity")
87− <|> (pure PosInfinity <* A.string "infinity")
88− <|> (Finite <$> getFinite)
89−
90−getDay :: A.Parser Day
91−getDay = TP.day
92−
93−getDate :: A.Parser Date
94−getDate = getUnbounded getDay
95−
96−getTimeOfDay :: A.Parser TimeOfDay
97−getTimeOfDay = TP.timeOfDay
98−
99−getLocalTime :: A.Parser LocalTime
100−getLocalTime = TP.localTime
101−
102−getLocalTimestamp :: A.Parser LocalTimestamp
103−getLocalTimestamp = getUnbounded getLocalTime
104−
105−getTimeZone :: A.Parser TimeZone
106−getTimeZone = fromMaybe utc <$> TP.timeZone
107−
108−type TimeZoneHMS = (Int,Int,Int)
109−
110−getTimeZoneHMS :: A.Parser TimeZoneHMS
111−getTimeZoneHMS = munge <$> TP.timeZoneHMS
112− where
113− munge Nothing = (0,0,0)
114− munge (Just (TP.UTCOffsetHMS h m s)) = (h,m,s)
115−
116−localToUTCTimeOfDayHMS :: TimeZoneHMS -> TimeOfDay -> (Integer, TimeOfDay)
117−localToUTCTimeOfDayHMS (dh, dm, ds) tod =
118− TP.localToUTCTimeOfDayHMS (TP.UTCOffsetHMS dh dm ds) tod
119−
120−getZonedTime :: A.Parser ZonedTime
121−getZonedTime = TP.zonedTime
122−
123−getZonedTimestamp :: A.Parser ZonedTimestamp
124−getZonedTimestamp = getUnbounded getZonedTime
125−
126−getUTCTime :: A.Parser UTCTime
127−getUTCTime = TP.utcTime
128−
129−getUTCTimestamp :: A.Parser UTCTimestamp
130−getUTCTimestamp = getUnbounded getUTCTime
131−
132−getCalendarDiffTime :: A.Parser CalendarDiffTime
133−getCalendarDiffTime = TP.calendarDiffTime
134−
135−dayToBuilder :: Day -> Builder
136−dayToBuilder = primBounded TPP.day
137−
138−timeOfDayToBuilder :: TimeOfDay -> Builder
139−timeOfDayToBuilder = primBounded TPP.timeOfDay
140−
141−timeZoneToBuilder :: TimeZone -> Builder
142−timeZoneToBuilder = primBounded TPP.timeZone
143−
144−utcTimeToBuilder :: UTCTime -> Builder
145−utcTimeToBuilder = primBounded TPP.utcTime
146−
147−zonedTimeToBuilder :: ZonedTime -> Builder
148−zonedTimeToBuilder = primBounded TPP.zonedTime
149−
150−localTimeToBuilder :: LocalTime -> Builder
151−localTimeToBuilder = primBounded TPP.localTime
152−
153−unboundedToBuilder :: (a -> Builder) -> (Unbounded a -> Builder)
154−unboundedToBuilder finiteToBuilder unbounded
155− = case unbounded of
156− NegInfinity -> byteString "-infinity"
157− Finite a -> finiteToBuilder a
158− PosInfinity -> byteString "infinity"
159−
160−utcTimestampToBuilder :: UTCTimestamp -> Builder
161−utcTimestampToBuilder = unboundedToBuilder utcTimeToBuilder
162−
163−zonedTimestampToBuilder :: ZonedTimestamp -> Builder
164−zonedTimestampToBuilder = unboundedToBuilder zonedTimeToBuilder
165−
166−localTimestampToBuilder :: LocalTimestamp -> Builder
167−localTimestampToBuilder = unboundedToBuilder localTimeToBuilder
168−
169−dateToBuilder :: Date -> Builder
170−dateToBuilder = unboundedToBuilder dayToBuilder
171−
172−nominalDiffTimeToBuilder :: NominalDiffTime -> Builder
173−nominalDiffTimeToBuilder = TPP.nominalDiffTime
174−
175−calendarDiffTimeToBuilder :: CalendarDiffTime -> Builder
176−calendarDiffTimeToBuilder = TPP.calendarDiffTime
src/Database/PostgreSQL/Simple/Time/Internal.hsdeleted−27
@@ -1,27 +0,0 @@
1−------------------------------------------------------------------------------
2−-- |
3−-- Module: Database.PostgreSQL.Simple.Time.Internal
4−-- Copyright: (c) 2012 Leon P Smith
5−-- License: BSD3
6−-- Maintainer: Leon P Smith <leon@melding-monads.com>
7−-- Stability: experimental
8−--
9−------------------------------------------------------------------------------
10−
11−module Database.PostgreSQL.Simple.Time.Internal
12− ( getDay
13− , getDate
14− , getTimeOfDay
15− , getLocalTime
16− , getLocalTimestamp
17− , getTimeZone
18− , getZonedTime
19− , getZonedTimestamp
20− , getUTCTime
21− , getUTCTimestamp
22− , TimeZoneHMS
23− , getTimeZoneHMS
24− , localToUTCTimeOfDayHMS
25− ) where
26−
27−import Database.PostgreSQL.Simple.Time.Implementation
src/Database/PostgreSQL/Simple/Time/Internal/Parser.hsdeleted−204
@@ -1,204 +0,0 @@
1−{-# LANGUAGE BangPatterns, ScopedTypeVariables #-}
2−
3−-- |
4−-- Module: Database.PostgreSQL.Simple.Time.Internal.Parser
5−-- Copyright: (c) 2012-2015 Leon P Smith
6−-- (c) 2015 Bryan O'Sullivan
7−-- License: BSD3
8−-- Maintainer: Leon P Smith <leon@melding-monads.com>
9−-- Stability: experimental
10−--
11−-- Parsers for parsing dates and times.
12−
13−module Database.PostgreSQL.Simple.Time.Internal.Parser
14− (
15− day
16− , localTime
17− , timeOfDay
18− , timeZone
19− , UTCOffsetHMS(..)
20− , timeZoneHMS
21− , localToUTCTimeOfDayHMS
22− , utcTime
23− , zonedTime
24− , calendarDiffTime
25− ) where
26−
27−import Control.Applicative ((<$>), (<*>), (<*), (*>))
28−import Database.PostgreSQL.Simple.Compat (toPico)
29−import Data.Attoparsec.ByteString.Char8 as A
30−import Data.Bits ((.&.))
31−import Data.ByteString (ByteString)
32−import Data.Char (ord)
33−import Data.Fixed (Pico)
34−import Data.Int (Int64)
35−import Data.Maybe (fromMaybe)
36−import Data.Time.Calendar.Compat (Day, fromGregorianValid, addDays)
37−import Data.Time.Clock.Compat (UTCTime(..))
38−import Data.Time.Format.ISO8601.Compat (iso8601ParseM)
39−import Data.Time.LocalTime.Compat (CalendarDiffTime)
40−import qualified Data.ByteString.Char8 as B8
41−import qualified Data.Time.LocalTime.Compat as Local
42−
43−-- | Parse a date of the form @YYYY-MM-DD@.
44−day :: Parser Day
45−day = do
46− y <- decimal <* char '-'
47− m <- twoDigits <* char '-'
48− d <- twoDigits
49− maybe (fail "invalid date") return (fromGregorianValid y m d)
50−
51−-- | Parse a two-digit integer (e.g. day of month, hour).
52−twoDigits :: Parser Int
53−twoDigits = do
54− a <- digit
55− b <- digit
56− let c2d c = ord c .&. 15
57− return $! c2d a * 10 + c2d b
58−
59−-- | Parse a time of the form @HH:MM[:SS[.SSS]]@.
60−timeOfDay :: Parser Local.TimeOfDay
61−timeOfDay = do
62− h <- twoDigits <* char ':'
63− m <- twoDigits
64− mc <- peekChar
65− s <- case mc of
66− Just ':' -> anyChar *> seconds
67− _ -> return 0
68− if h < 24 && m < 60 && s <= 60
69− then return (Local.TimeOfDay h m s)
70− else fail "invalid time"
71−
72−-- | Parse a count of seconds, with the integer part being two digits
73−-- long.
74−seconds :: Parser Pico
75−seconds = do
76− real <- twoDigits
77− mc <- peekChar
78− case mc of
79− Just '.' -> do
80− t <- anyChar *> takeWhile1 isDigit
81− return $! parsePicos (fromIntegral real) t
82− _ -> return $! fromIntegral real
83− where
84− parsePicos :: Int64 -> B8.ByteString -> Pico
85− parsePicos a0 t = toPico (fromIntegral (t' * 10^n))
86− where n = max 0 (12 - B8.length t)
87− t' = B8.foldl' (\a c -> 10 * a + fromIntegral (ord c .&. 15)) a0
88− (B8.take 12 t)
89−
90−-- | Parse a time zone, and return 'Nothing' if the offset from UTC is
91−-- zero. (This makes some speedups possible.)
92−timeZone :: Parser (Maybe Local.TimeZone)
93−timeZone = do
94− ch <- satisfy $ \c -> c == '+' || c == '-' || c == 'Z'
95− if ch == 'Z'
96− then return Nothing
97− else do
98− h <- twoDigits
99− mm <- peekChar
100− m <- case mm of
101− Just ':' -> anyChar *> twoDigits
102− _ -> return 0
103− let off | ch == '-' = negate off0
104− | otherwise = off0
105− off0 = h * 60 + m
106− case undefined of
107− _ | off == 0 ->
108− return Nothing
109− | h > 23 || m > 59 ->
110− fail "invalid time zone offset"
111− | otherwise ->
112− let !tz = Local.minutesToTimeZone off
113− in return (Just tz)
114−
115−data UTCOffsetHMS = UTCOffsetHMS {-# UNPACK #-} !Int {-# UNPACK #-} !Int {-# UNPACK #-} !Int
116−
117−-- | Parse a time zone, and return 'Nothing' if the offset from UTC is
118−-- zero. (This makes some speedups possible.)
119−timeZoneHMS :: Parser (Maybe UTCOffsetHMS)
120−timeZoneHMS = do
121− ch <- satisfy $ \c -> c == '+' || c == '-' || c == 'Z'
122− if ch == 'Z'
123− then return Nothing
124− else do
125− h <- twoDigits
126− m <- maybeTwoDigits
127− s <- maybeTwoDigits
128− case undefined of
129− _ | h == 0 && m == 0 && s == 0 ->
130− return Nothing
131− | h > 23 || m >= 60 || s >= 60 ->
132− fail "invalid time zone offset"
133− | otherwise ->
134− if ch == '+'
135− then let !tz = UTCOffsetHMS h m s
136− in return (Just tz)
137− else let !tz = UTCOffsetHMS (-h) (-m) (-s)
138− in return (Just tz)
139− where
140− maybeTwoDigits = do
141− ch <- peekChar
142− case ch of
143− Just ':' -> anyChar *> twoDigits
144− _ -> return 0
145−
146−localToUTCTimeOfDayHMS :: UTCOffsetHMS -> Local.TimeOfDay -> (Integer, Local.TimeOfDay)
147−localToUTCTimeOfDayHMS (UTCOffsetHMS dh dm ds) (Local.TimeOfDay h m s) =
148− (\ !a !b -> (a,b)) dday (Local.TimeOfDay h'' m'' s'')
149− where
150− s' = s - fromIntegral ds
151− (!s'', m')
152− | s' < 0 = (s' + 60, m - dm - 1)
153− | s' >= 60 = (s' - 60, m - dm + 1)
154− | otherwise = (s' , m - dm )
155− (!m'', h')
156− | m' < 0 = (m' + 60, h - dh - 1)
157− | m' >= 60 = (m' - 60, h - dh + 1)
158− | otherwise = (m' , h - dh )
159− (!h'', dday)
160− | h' < 0 = (h' + 24, -1)
161− | h' >= 24 = (h' - 24, 1)
162− | otherwise = (h' , 0)
163−
164−
165−-- | Parse a date and time, of the form @YYYY-MM-DD HH:MM:SS@.
166−-- The space may be replaced with a @T@. The number of seconds may be
167−-- followed by a fractional component.
168−localTime :: Parser Local.LocalTime
169−localTime = Local.LocalTime <$> day <* daySep <*> timeOfDay
170− where daySep = satisfy (\c -> c == ' ' || c == 'T')
171−
172−-- | Behaves as 'zonedTime', but converts any time zone offset into a
173−-- UTC time.
174−utcTime :: Parser UTCTime
175−utcTime = do
176− (Local.LocalTime d t) <- localTime
177− mtz <- timeZoneHMS
178− case mtz of
179− Nothing -> let !tt = Local.timeOfDayToTime t
180− in return (UTCTime d tt)
181− Just tz -> let !(dd,t') = localToUTCTimeOfDayHMS tz t
182− !d' = addDays dd d
183− !tt = Local.timeOfDayToTime t'
184− in return (UTCTime d' tt)
185−
186−-- | Parse a date with time zone info. Acceptable formats:
187−--
188−-- @YYYY-MM-DD HH:MM:SS Z@
189−--
190−-- The first space may instead be a @T@, and the second space is
191−-- optional. The @Z@ represents UTC. The @Z@ may be replaced with a
192−-- time zone offset of the form @+0000@ or @-08:00@, where the first
193−-- two digits are hours, the @:@ is optional and the second two digits
194−-- (also optional) are minutes.
195−zonedTime :: Parser Local.ZonedTime
196−zonedTime = Local.ZonedTime <$> localTime <*> (fromMaybe utc <$> timeZone)
197−
198−utc :: Local.TimeZone
199−utc = Local.TimeZone 0 False ""
200−
201−calendarDiffTime :: Parser CalendarDiffTime
202−calendarDiffTime = do
203− contents <- takeByteString
204− iso8601ParseM $ B8.unpack contents
src/Database/PostgreSQL/Simple/Time/Internal/Printer.hsdeleted−135
@@ -1,135 +0,0 @@
1−{-# LANGUAGE BangPatterns, ViewPatterns #-}
2−
3−------------------------------------------------------------------------------
4−-- Module: Database.PostgreSQL.Simple.Time.Internal.Printer
5−-- Copyright: (c) 2012-2015 Leon P Smith
6−-- License: BSD3
7−-- Maintainer: Leon P Smith <leon@melding-monads.com>
8−-- Stability: experimental
9−------------------------------------------------------------------------------
10−
11−module Database.PostgreSQL.Simple.Time.Internal.Printer
12− (
13− day
14− , timeOfDay
15− , timeZone
16− , utcTime
17− , localTime
18− , zonedTime
19− , nominalDiffTime
20− , calendarDiffTime
21− ) where
22−
23−import Control.Arrow ((>>>))
24−import Data.ByteString.Builder (Builder, byteString, integerDec)
25−import Data.ByteString.Builder.Prim
26− ( liftFixedToBounded, (>$<), (>*<)
27− , BoundedPrim, primBounded, condB, emptyB, FixedPrim, char8, int32Dec)
28−import Data.Char ( chr )
29−import Data.Int ( Int32, Int64 )
30−import Data.String (fromString)
31−import Data.Time.Compat
32− ( UTCTime(..), ZonedTime(..), LocalTime(..), NominalDiffTime
33− , Day, toGregorian, TimeOfDay(..), timeToTimeOfDay
34− , TimeZone, timeZoneMinutes )
35−import Data.Time.Format.ISO8601.Compat (iso8601Show)
36−import Data.Time.LocalTime.Compat (CalendarDiffTime)
37−import Database.PostgreSQL.Simple.Compat ((<>), fromPico)
38−import Unsafe.Coerce (unsafeCoerce)
39−
40−liftB :: FixedPrim a -> BoundedPrim a
41−liftB = liftFixedToBounded
42−
43−digit :: FixedPrim Int
44−digit = (\x -> chr (x + 48)) >$< char8
45−
46−digits2 :: FixedPrim Int
47−digits2 = (`quotRem` 10) >$< (digit >*< digit)
48−
49−digits3 :: FixedPrim Int
50−digits3 = (`quotRem` 10) >$< (digits2 >*< digit)
51−
52−digits4 :: FixedPrim Int
53−digits4 = (`quotRem` 10) >$< (digits3 >*< digit)
54−
55−frac :: BoundedPrim Int64
56−frac = condB (== 0) emptyB ((,) '.' >$< (liftB char8 >*< trunc12))
57− where
58− trunc12 :: BoundedPrim Int64
59− trunc12 = (`quotRem` 1000000) >$<
60− condB (\(_,y) -> y == 0)
61− (fst >$< trunc6)
62− (liftB digits6 >*< trunc6)
63−
64− digitB = liftB digit
65−
66− digits6 = (fromIntegral >>> (`quotRem` 10)) >$< (digits5 >*< digit)
67− digits5 = (`quotRem` 10) >$< (digits4 >*< digit)
68−
69− trunc6 = (fromIntegral >>> (`quotRem` 100000)) >$< (digitB >*< trunc5)
70− trunc5 = condB (== 0) emptyB ((`quotRem` 10000) >$< (digitB >*< trunc4))
71− trunc4 = condB (== 0) emptyB ((`quotRem` 1000) >$< (digitB >*< trunc3))
72− trunc3 = condB (== 0) emptyB ((`quotRem` 100) >$< (digitB >*< trunc2))
73− trunc2 = condB (== 0) emptyB ((`quotRem` 10) >$< (digitB >*< trunc1))
74− trunc1 = condB (== 0) emptyB digitB
75−
76−
77−year :: BoundedPrim Int32
78−year = condB (>= 10000) int32Dec (checkBCE >$< liftB digits4)
79− where
80− checkBCE :: Int32 -> Int
81− checkBCE y
82− | y > 0 = fromIntegral y
83− | otherwise = error msg
84−
85− msg = "Database.PostgreSQL.Simple.Time.Printer.year: years BCE not supported"
86−
87−day :: BoundedPrim Day
88−day = toYMD >$< (year >*< liftB (char8 >*< digits2 >*< char8 >*< digits2))
89− where
90− toYMD (toGregorian -> (fromIntegral -> !y, !m,!d)) = (y,('-',(m,('-',d))))
91−
92−timeOfDay :: BoundedPrim TimeOfDay
93−timeOfDay = f >$< (hh_mm_ >*< ss)
94− where
95− f (TimeOfDay h m s) = ((h,(':',(m,':'))),s)
96−
97− hh_mm_ = liftB (digits2 >*< char8 >*< digits2 >*< char8)
98−
99− ss = (\s -> fromIntegral (fromPico s) `quotRem` 1000000000000) >$<
100− (liftB (fromIntegral >$< digits2) >*< frac)
101−
102−timeZone :: BoundedPrim TimeZone
103−timeZone = timeZoneMinutes >$< tz
104− where
105− tz = condB (>= 0) ((,) '+' >$< tzh) ((,) '-' . negate >$< tzh)
106−
107− tzh = liftB char8 >*< ((`quotRem` 60) >$< (liftB digits2 >*< tzm))
108−
109− tzm = condB (==0) emptyB ((,) ':' >$< liftB (char8 >*< digits2))
110−
111−utcTime :: BoundedPrim UTCTime
112−utcTime = f >$< (day >*< liftB char8 >*< timeOfDay >*< liftB char8)
113− where f (UTCTime d (timeToTimeOfDay -> tod)) = (d,(' ',(tod,'Z')))
114−
115−localTime :: BoundedPrim LocalTime
116−localTime = f >$< (day >*< liftB char8 >*< timeOfDay)
117− where f (LocalTime d tod) = (d, (' ', tod))
118−
119−zonedTime :: BoundedPrim ZonedTime
120−zonedTime = f >$< (localTime >*< timeZone)
121− where f (ZonedTime lt tz) = (lt, tz)
122−
123−
124−nominalDiffTime :: NominalDiffTime -> Builder
125−nominalDiffTime xy = integerDec x <> primBounded frac (abs (fromIntegral y))
126− where
127− (x,y) = fromPico (unsafeCoerce xy) `quotRem` 1000000000000
128−
129−calendarDiffTime :: CalendarDiffTime -> Builder
130−calendarDiffTime = byteString
131− . fromString
132− -- from the docs: "Beware: fromString truncates multi-byte characters to octets".
133− -- However, I think this is a safe usage, because ISO8601-encoding seems restricted
134− -- to ASCII output.
135− . iso8601Show
src/Database/PostgreSQL/Simple/ToField.hs+49−235
@@ -1,15 +1,14 @@
1−{-# LANGUAGE CPP, DeriveDataTypeable, DeriveFunctor #-}
2−{-# LANGUAGE FlexibleInstances, TypeSynonymInstances #-}
3−{-# LANGUAGE PolyKinds #-}
1+{-# LANGUAGE DeriveDataTypeable, DeriveFunctor, FlexibleInstances #-}
42
53------------------------------------------------------------------------------
64-- |
75-- Module: Database.PostgreSQL.Simple.ToField
86-- Copyright: (c) 2011 MailRank, Inc.
9−-- (c) 2011-2012 Leon P Smith
7+-- (c) 2011 Leon P Smith
108-- License: BSD3
119-- Maintainer: Leon P Smith <leon@melding-monads.com>
1210-- Stability: experimental
11+-- Portability: portable
1312--
1413-- The 'ToField' typeclass, for rendering a parameter to a SQL query.
1514--
@@ -19,48 +18,31 @@ module Database.PostgreSQL.Simple.ToField
1918 (
2019 Action(..)
2120 , ToField(..)
22− , toJSONField
2321 , inQuotes
2422 ) where
2523
26−import Control.Applicative (Const(Const))
27−import qualified Data.Aeson as JSON
28−import Data.ByteString (ByteString)
29−import Data.ByteString.Builder
30− ( Builder, byteString, char8, stringUtf8
31− , intDec, int8Dec, int16Dec, int32Dec, int64Dec, integerDec
32− , wordDec, word8Dec, word16Dec, word32Dec, word64Dec
33− , floatDec, doubleDec
34− )
35−import Data.Functor.Identity (Identity(Identity))
24+import Blaze.ByteString.Builder (Builder, fromByteString, toByteString)
25+import Blaze.ByteString.Builder.Char8 (fromChar)
26+import Blaze.Text (integral, double, float)
27+import Data.ByteString (ByteString)
3628import Data.Int (Int8, Int16, Int32, Int64)
3729import Data.List (intersperse)
3830import Data.Monoid (mappend)
39−import Data.Time.Compat (Day, TimeOfDay, LocalTime, UTCTime, ZonedTime, NominalDiffTime)
40−import Data.Time.LocalTime.Compat (CalendarDiffTime)
31+import Data.Time.Calendar (Day, showGregorian)
32+import Data.Time.Clock (UTCTime)
33+import Data.Time.Format (formatTime)
34+import Data.Time.LocalTime (TimeOfDay)
4135import Data.Typeable (Typeable)
4236import Data.Word (Word, Word8, Word16, Word32, Word64)
43−import {-# SOURCE #-} Database.PostgreSQL.Simple.ToRow
44−import Database.PostgreSQL.Simple.Types
45−import Database.PostgreSQL.Simple.Compat (toByteString)
46−
37+import Database.PostgreSQL.Simple.Types (Binary(..), In(..), Null)
38+import System.Locale (defaultTimeLocale)
39+import qualified Blaze.ByteString.Builder.Char.Utf8 as Utf8
4740import qualified Data.ByteString as SB
4841import qualified Data.ByteString.Lazy as LB
49−import Data.CaseInsensitive (CI)
50−import qualified Data.CaseInsensitive as CI
5142import qualified Data.Text as ST
5243import qualified Data.Text.Encoding as ST
5344import qualified Data.Text.Lazy as LT
54−import qualified Data.Text.Lazy.Builder as LT
55−import Data.UUID.Types (UUID)
56−import qualified Data.UUID.Types as UUID
57−import Data.Vector (Vector)
58−import qualified Data.Vector as V
5945import qualified Database.PostgreSQL.LibPQ as PQ
60−import Database.PostgreSQL.Simple.Time
61−import Data.Scientific (Scientific)
62−import Data.Text.Lazy.Builder.Scientific (scientificBuilder)
63−import Foreign.C.Types (CUInt(..))
6446
6547-- | How to render an element when substituting it into a query.
6648data Action =
@@ -73,23 +55,18 @@ data Action =
7355 -- ^ Escape and enclose in quotes before substituting. Use for all
7456 -- text-like types, and anything else that may contain unsafe
7557 -- characters when rendered.
76− | EscapeByteA ByteString
58+ | EscapeBytea ByteString
7759 -- ^ Escape binary data for use as a @bytea@ literal. Include surrounding
7860 -- quotes. This is used by the 'Binary' newtype wrapper.
79− | EscapeIdentifier ByteString
80− -- ^ Escape before substituting. Use for all sql identifiers like
81− -- table, column names, etc. This is used by the 'Identifier' newtype
82− -- wrapper.
8361 | Many [Action]
8462 -- ^ Concatenate a series of rendering actions.
8563 deriving (Typeable)
8664
8765instance Show Action where
88− show (Plain b) = "Plain " ++ show (toByteString b)
89− show (Escape b) = "Escape " ++ show b
90− show (EscapeByteA b) = "EscapeByteA " ++ show b
91− show (EscapeIdentifier b) = "EscapeIdentifier " ++ show b
92− show (Many b) = "Many " ++ show b
66+ show (Plain b) = "Plain " ++ show (toByteString b)
67+ show (Escape b) = "Escape " ++ show b
68+ show (EscapeBytea b) = "EscapeBytea " ++ show b
69+ show (Many b) = "Many " ++ show b
9370
9471-- | A type that may be used as a single parameter to a SQL query.
9572class ToField a where
@@ -100,124 +77,94 @@ instance ToField Action where
10077 toField a = a
10178 {-# INLINE toField #-}
10279
103−instance (ToField a) => ToField (Const a b) where
104− toField (Const a) = toField a
105− {-# INLINE toField #-}
106−
107−instance (ToField a) => ToField (Identity a) where
108− toField (Identity a) = toField a
109− {-# INLINE toField #-}
110−
11180instance (ToField a) => ToField (Maybe a) where
11281 toField Nothing = renderNull
11382 toField (Just a) = toField a
11483 {-# INLINE toField #-}
11584
11685instance (ToField a) => ToField (In [a]) where
117− toField (In []) = Plain $ byteString "(null)"
86+ toField (In []) = Plain $ fromByteString "(null)"
11887 toField (In xs) = Many $
119− Plain (char8 '(') :
120− (intersperse (Plain (char8 ',')) . map toField $ xs) ++
121− [Plain (char8 ')')]
88+ Plain (fromChar '(') :
89+ (intersperse (Plain (fromChar ',')) . map toField $ xs) ++
90+ [Plain (fromChar ')')]
12291
12392renderNull :: Action
124−renderNull = Plain (byteString "null")
93+renderNull = Plain (fromByteString "null")
12594
12695instance ToField Null where
12796 toField _ = renderNull
12897 {-# INLINE toField #-}
12998
130−instance ToField Default where
131− toField _ = Plain (byteString "default")
132− {-# INLINE toField #-}
133−
13499instance ToField Bool where
135− toField True = Plain (byteString "true")
136− toField False = Plain (byteString "false")
100+ toField True = Plain (fromByteString "true")
101+ toField False = Plain (fromByteString "false")
137102 {-# INLINE toField #-}
138103
139104instance ToField Int8 where
140− toField = Plain . int8Dec
105+ toField = Plain . integral
141106 {-# INLINE toField #-}
142107
143108instance ToField Int16 where
144− toField = Plain . int16Dec
109+ toField = Plain . integral
145110 {-# INLINE toField #-}
146111
147112instance ToField Int32 where
148− toField = Plain . int32Dec
113+ toField = Plain . integral
149114 {-# INLINE toField #-}
150115
151116instance ToField Int where
152− toField = Plain . intDec
117+ toField = Plain . integral
153118 {-# INLINE toField #-}
154119
155120instance ToField Int64 where
156− toField = Plain . int64Dec
121+ toField = Plain . integral
157122 {-# INLINE toField #-}
158123
159124instance ToField Integer where
160− toField = Plain . integerDec
125+ toField = Plain . integral
161126 {-# INLINE toField #-}
162127
163128instance ToField Word8 where
164− toField = Plain . word8Dec
129+ toField = Plain . integral
165130 {-# INLINE toField #-}
166131
167132instance ToField Word16 where
168− toField = Plain . word16Dec
133+ toField = Plain . integral
169134 {-# INLINE toField #-}
170135
171136instance ToField Word32 where
172− toField = Plain . word32Dec
137+ toField = Plain . integral
173138 {-# INLINE toField #-}
174139
175140instance ToField Word where
176− toField = Plain . wordDec
141+ toField = Plain . integral
177142 {-# INLINE toField #-}
178143
179144instance ToField Word64 where
180− toField = Plain . word64Dec
145+ toField = Plain . integral
181146 {-# INLINE toField #-}
182147
183148instance ToField PQ.Oid where
184− toField = Plain . \(PQ.Oid (CUInt x)) -> word32Dec x
149+ toField = Plain . integral . \(PQ.Oid x) -> x
185150 {-# INLINE toField #-}
186151
187152instance ToField Float where
188− toField v | isNaN v || isInfinite v = Plain (inQuotes (floatDec v))
189− | otherwise = Plain (floatDec v)
153+ toField v | isNaN v || isInfinite v = Plain (inQuotes (float v))
154+ | otherwise = Plain (float v)
190155 {-# INLINE toField #-}
191156
192157instance ToField Double where
193− toField v | isNaN v || isInfinite v = Plain (inQuotes (doubleDec v))
194− | otherwise = Plain (doubleDec v)
195− {-# INLINE toField #-}
196−
197−instance ToField Scientific where
198− toField x = toField (LT.toLazyText (scientificBuilder x))
158+ toField v | isNaN v || isInfinite v = Plain (inQuotes (double v))
159+ | otherwise = Plain (double v)
199160 {-# INLINE toField #-}
200161
201162instance ToField (Binary SB.ByteString) where
202− toField (Binary bs) = EscapeByteA bs
163+ toField (Binary bs) = EscapeBytea bs
203164 {-# INLINE toField #-}
204165
205166instance ToField (Binary LB.ByteString) where
206− toField (Binary bs) = (EscapeByteA . SB.concat . LB.toChunks) bs
207− {-# INLINE toField #-}
208−
209−instance ToField Identifier where
210− toField (Identifier bs) = EscapeIdentifier (ST.encodeUtf8 bs)
211− {-# INLINE toField #-}
212−
213−instance ToField QualifiedIdentifier where
214− toField (QualifiedIdentifier (Just s) t) =
215− Many [ EscapeIdentifier (ST.encodeUtf8 s)
216− , Plain (char8 '.')
217− , EscapeIdentifier (ST.encodeUtf8 t)
218− ]
219− toField (QualifiedIdentifier Nothing t) =
220− EscapeIdentifier (ST.encodeUtf8 t)
167+ toField (Binary bs) = (EscapeBytea . SB.concat . LB.toChunks) bs
221168 {-# INLINE toField #-}
222169
223170instance ToField SB.ByteString where
@@ -233,161 +180,28 @@ instance ToField ST.Text where
233180 {-# INLINE toField #-}
234181
235182instance ToField [Char] where
236− toField = Escape . toByteString . stringUtf8
183+ toField = Escape . toByteString . Utf8.fromString
237184 {-# INLINE toField #-}
238185
239186instance ToField LT.Text where
240187 toField = toField . LT.toStrict
241188 {-# INLINE toField #-}
242189
243−-- | citext
244−instance ToField (CI ST.Text) where
245− toField = toField . CI.original
246− {-# INLINE toField #-}
247−
248−-- | citext
249−instance ToField (CI LT.Text) where
250− toField = toField . LT.toStrict . CI.original
251− {-# INLINE toField #-}
252−
253190instance ToField UTCTime where
254− toField = Plain . inQuotes . utcTimeToBuilder
255− {-# INLINE toField #-}
256−
257−instance ToField ZonedTime where
258− toField = Plain . inQuotes . zonedTimeToBuilder
259− {-# INLINE toField #-}
260−
261−instance ToField LocalTime where
262− toField = Plain . inQuotes . localTimeToBuilder
191+ toField = Plain . Utf8.fromString . formatTime defaultTimeLocale "'%F %T%Q+00'"
263192 {-# INLINE toField #-}
264193
265194instance ToField Day where
266− toField = Plain . inQuotes . dayToBuilder
195+ toField = Plain . inQuotes . Utf8.fromString . showGregorian
267196 {-# INLINE toField #-}
268197
269198instance ToField TimeOfDay where
270− toField = Plain . inQuotes . timeOfDayToBuilder
199+ toField = Plain . inQuotes . Utf8.fromString . show
271200 {-# INLINE toField #-}
272201
273−instance ToField UTCTimestamp where
274− toField = Plain . inQuotes . utcTimestampToBuilder
275− {-# INLINE toField #-}
276−
277−instance ToField ZonedTimestamp where
278− toField = Plain . inQuotes . zonedTimestampToBuilder
279− {-# INLINE toField #-}
280−
281−instance ToField LocalTimestamp where
282− toField = Plain . inQuotes . localTimestampToBuilder
283− {-# INLINE toField #-}
284−
285−instance ToField Date where
286− toField = Plain . inQuotes . dateToBuilder
287− {-# INLINE toField #-}
288−
289−instance ToField NominalDiffTime where
290− toField = Plain . inQuotes . nominalDiffTimeToBuilder
291− {-# INLINE toField #-}
292−
293−instance ToField CalendarDiffTime where
294− toField = Plain . inQuotes . calendarDiffTimeToBuilder
295− {-# INLINE toField #-}
296−
297−instance (ToField a) => ToField (PGArray a) where
298− toField pgArray =
299− case fromPGArray pgArray of
300− [] -> Plain (byteString "'{}'")
301− xs -> Many $
302− Plain (byteString "ARRAY[") :
303− (intersperse (Plain (char8 ',')) . map toField $ xs) ++
304− [Plain (char8 ']')]
305− -- Because the ARRAY[...] input syntax is being used, it is possible
306− -- that the use of type-specific separator characters is unnecessary.
307−
308−instance (ToField a) => ToField (Vector a) where
309− toField = toField . PGArray . V.toList
310−
311−instance ToField UUID where
312− toField = Plain . inQuotes . byteString . UUID.toASCIIBytes
313−
314−instance ToField JSON.Value where
315− toField = toField . JSON.encode
316−
317−-- | Convert a Haskell value to JSON using 'JSON.toEncoding'.
318−--
319−-- This can be used as the default implementation for the 'toField'
320−-- method for Haskell types that have a JSON representation in
321−-- PostgreSQL.
322−toJSONField :: JSON.ToJSON a => a -> Action
323−toJSONField = toField . JSON.encode
324−
325202-- | Surround a string with single-quote characters: \"@'@\"
326203--
327204-- This function /does not/ perform any other escaping.
328205inQuotes :: Builder -> Builder
329206inQuotes b = quote `mappend` b `mappend` quote
330− where quote = char8 '\''
331−
332−interleaveFoldr :: (a -> [b] -> [b]) -> b -> [b] -> [a] -> [b]
333−interleaveFoldr f b bs' as = foldr (\a bs -> b : f a bs) bs' as
334−{-# INLINE interleaveFoldr #-}
335−
336−instance ToRow a => ToField (Values a) where
337− toField (Values types rows) =
338− case rows of
339− [] -> case types of
340− [] -> error norows
341− (_:_) -> values $ typedRow (repeat (lit "null"))
342− types
343− [lit " LIMIT 0)"]
344− (_:_) -> case types of
345− [] -> values $ untypedRows rows [litC ')']
346− (_:_) -> values $ typedRows rows types [litC ')']
347− where
348− funcname = "Database.PostgreSQL.Simple.toField :: Values a -> Action"
349− norows = funcname ++ " either values or types must be non-empty"
350− emptyrow = funcname ++ " each row must contain at least one column"
351− lit = Plain . byteString
352− litC = Plain . char8
353− values x = Many (lit "(VALUES ": x)
354−
355− typedField :: (Action, QualifiedIdentifier) -> [Action] -> [Action]
356− typedField (val,typ) rest = val : lit "::" : toField typ : rest
357−
358− typedRow :: [Action] -> [QualifiedIdentifier] -> [Action] -> [Action]
359− typedRow (val:vals) (typ:typs) rest =
360− litC '(' :
361− typedField (val,typ) ( interleaveFoldr
362− typedField
363− (litC ',')
364− (litC ')' : rest)
365− (zip vals typs) )
366− typedRow _ _ _ = error emptyrow
367−
368− untypedRow :: [Action] -> [Action] -> [Action]
369− untypedRow (val:vals) rest =
370− litC '(' : val :
371− interleaveFoldr
372− (:)
373− (litC ',')
374− (litC ')' : rest)
375− vals
376− untypedRow _ _ = error emptyrow
377−
378− typedRows :: ToRow a => [a] -> [QualifiedIdentifier] -> [Action] -> [Action]
379− typedRows [] _ _ = error funcname
380− typedRows (val:vals) typs rest =
381− typedRow (toRow val) typs (multiRows vals rest)
382−
383− untypedRows :: ToRow a => [a] -> [Action] -> [Action]
384− untypedRows [] _ = error funcname
385− untypedRows (val:vals) rest =
386− untypedRow (toRow val) (multiRows vals rest)
387−
388− multiRows :: ToRow a => [a] -> [Action] -> [Action]
389− multiRows vals rest = interleaveFoldr
390− (untypedRow . toRow)
391− (litC ',')
392− rest
393− vals
207+ where quote = Utf8.fromChar '\''
src/Database/PostgreSQL/Simple/ToField.hs-bootdeleted−30
@@ -1,30 +0,0 @@
1−module Database.PostgreSQL.Simple.ToField where
2−
3−import Database.PostgreSQL.Simple.Types
4−import Data.ByteString.Builder(Builder)
5−import Data.ByteString(ByteString)
6−
7−-- | How to render an element when substituting it into a query.
8−data Action =
9− Plain Builder
10− -- ^ Render without escaping or quoting. Use for non-text types
11− -- such as numbers, when you are /certain/ that they will not
12− -- introduce formatting vulnerabilities via use of characters such
13− -- as spaces or \"@'@\".
14− | Escape ByteString
15− -- ^ Escape and enclose in quotes before substituting. Use for all
16− -- text-like types, and anything else that may contain unsafe
17− -- characters when rendered.
18− | EscapeByteA ByteString
19− -- ^ Escape binary data for use as a @bytea@ literal. Include surrounding
20− -- quotes. This is used by the 'Binary' newtype wrapper.
21− | EscapeIdentifier ByteString
22− -- ^ Escape before substituting. Use for all sql identifiers like
23− -- table, column names, etc. This is used by the 'Identifier' newtype
24− -- wrapper.
25− | Many [Action]
26− -- ^ Concatenate a series of rendering actions.
27−
28−class ToField a
29−
30−instance ToField Oid
src/Database/PostgreSQL/Simple/ToRow.hs+6−135
@@ -1,14 +1,14 @@
1−{-# LANGUAGE DefaultSignatures, FlexibleInstances, FlexibleContexts #-}
21------------------------------------------------------------------------------
32-- |
4−-- Module: Database.PostgreSQL.Simple.ToRow
3+-- Module: Database.PostgreSQL.Simple.QueryParams
54-- Copyright: (c) 2011 MailRank, Inc.
6−-- (c) 2011-2012 Leon P Smith
5+-- (c) 2011 Leon P Smith
76-- License: BSD3
87-- Maintainer: Leon P Smith <leon@melding-monads.com>
98-- Stability: experimental
9+-- Portability: portable
1010--
11−-- The 'ToRow' typeclass, for rendering a collection of
11+-- The 'QueryParams' typeclass, for rendering a collection of
1212-- parameters to a SQL query.
1313--
1414-- Predefined instances are provided for tuples containing up to ten
@@ -22,34 +22,15 @@ module Database.PostgreSQL.Simple.ToRow
2222 ) where
2323
2424import Database.PostgreSQL.Simple.ToField (Action(..), ToField(..))
25−import Database.PostgreSQL.Simple.Types (Only(..), (:.)(..))
26−import GHC.Generics
25+import Database.PostgreSQL.Simple.Types (Only(..))
2726
2827-- | A collection type that can be turned into a list of rendering
2928-- 'Action's.
3029--
31−-- Instances should use the 'toField' method of the 'ToField' class
30+-- Instances should use the 'render' method of the 'Param' class
3231-- to perform conversion of each element of the collection.
33−--
34−-- You can derive 'ToRow' for your data type using GHC generics, like this:
35−--
36−-- @
37−-- \{-# LANGUAGE DeriveAnyClass \#-}
38−-- \{-# LANGUAGE DeriveGeneric \#-}
39−--
40−-- import "GHC.Generics" ('GHC.Generics.Generic')
41−-- import "Database.PostgreSQL.Simple" ('ToRow')
42−--
43−-- data User = User { name :: String, fileQuota :: Int }
44−-- deriving ('GHC.Generics.Generic', 'ToRow')
45−-- @
46−--
47−-- Note that this only works for product types (e.g. records) and does not
48−-- support sum types or recursive types.
4932class ToRow a where
5033 toRow :: a -> [Action]
51− default toRow :: (Generic a, GToRow (Rep a)) => a -> [Action]
52− toRow = gtoRow . from
5334 -- ^ ToField a collection of values.
5435
5536instance ToRow () where
@@ -105,115 +86,5 @@ instance (ToField a, ToField b, ToField c, ToField d, ToField e, ToField f,
10586 [toField a, toField b, toField c, toField d, toField e, toField f,
10687 toField g, toField h, toField i, toField j]
10788
108−instance (ToField a, ToField b, ToField c, ToField d, ToField e, ToField f,
109− ToField g, ToField h, ToField i, ToField j, ToField k)
110− => ToRow (a,b,c,d,e,f,g,h,i,j,k) where
111− toRow (a,b,c,d,e,f,g,h,i,j,k) =
112− [toField a, toField b, toField c, toField d, toField e, toField f,
113− toField g, toField h, toField i, toField j, toField k]
114−
115−instance (ToField a, ToField b, ToField c, ToField d, ToField e, ToField f,
116− ToField g, ToField h, ToField i, ToField j, ToField k, ToField l)
117− => ToRow (a,b,c,d,e,f,g,h,i,j,k,l) where
118− toRow (a,b,c,d,e,f,g,h,i,j,k,l) =
119− [toField a, toField b, toField c, toField d, toField e, toField f,
120− toField g, toField h, toField i, toField j, toField k, toField l]
121−
122−instance (ToField a, ToField b, ToField c, ToField d, ToField e, ToField f,
123− ToField g, ToField h, ToField i, ToField j, ToField k, ToField l,
124− ToField m)
125− => ToRow (a,b,c,d,e,f,g,h,i,j,k,l,m) where
126− toRow (a,b,c,d,e,f,g,h,i,j,k,l,m) =
127− [toField a, toField b, toField c, toField d, toField e, toField f,
128− toField g, toField h, toField i, toField j, toField k, toField l,
129− toField m]
130−
131−instance (ToField a, ToField b, ToField c, ToField d, ToField e, ToField f,
132− ToField g, ToField h, ToField i, ToField j, ToField k, ToField l,
133− ToField m, ToField n)
134− => ToRow (a,b,c,d,e,f,g,h,i,j,k,l,m,n) where
135− toRow (a,b,c,d,e,f,g,h,i,j,k,l,m,n) =
136− [toField a, toField b, toField c, toField d, toField e, toField f,
137− toField g, toField h, toField i, toField j, toField k, toField l,
138− toField m, toField n]
139−
140−instance (ToField a, ToField b, ToField c, ToField d, ToField e, ToField f,
141− ToField g, ToField h, ToField i, ToField j, ToField k, ToField l,
142− ToField m, ToField n, ToField o)
143− => ToRow (a,b,c,d,e,f,g,h,i,j,k,l,m,n,o) where
144− toRow (a,b,c,d,e,f,g,h,i,j,k,l,m,n,o) =
145− [toField a, toField b, toField c, toField d, toField e, toField f,
146− toField g, toField h, toField i, toField j, toField k, toField l,
147− toField m, toField n, toField o]
148−
149−instance (ToField a, ToField b, ToField c, ToField d, ToField e, ToField f,
150− ToField g, ToField h, ToField i, ToField j, ToField k, ToField l,
151− ToField m, ToField n, ToField o, ToField p)
152− => ToRow (a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p) where
153− toRow (a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p) =
154− [toField a, toField b, toField c, toField d, toField e, toField f,
155− toField g, toField h, toField i, toField j, toField k, toField l,
156− toField m, toField n, toField o, toField p]
157−
158−instance (ToField a, ToField b, ToField c, ToField d, ToField e, ToField f,
159− ToField g, ToField h, ToField i, ToField j, ToField k, ToField l,
160− ToField m, ToField n, ToField o, ToField p, ToField q)
161− => ToRow (a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q) where
162− toRow (a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q) =
163− [toField a, toField b, toField c, toField d, toField e, toField f,
164− toField g, toField h, toField i, toField j, toField k, toField l,
165− toField m, toField n, toField o, toField p, toField q]
166−
167−instance (ToField a, ToField b, ToField c, ToField d, ToField e, ToField f,
168− ToField g, ToField h, ToField i, ToField j, ToField k, ToField l,
169− ToField m, ToField n, ToField o, ToField p, ToField q, ToField r)
170− => ToRow (a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r) where
171− toRow (a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r) =
172− [toField a, toField b, toField c, toField d, toField e, toField f,
173− toField g, toField h, toField i, toField j, toField k, toField l,
174− toField m, toField n, toField o, toField p, toField q, toField r]
175−
176−instance (ToField a, ToField b, ToField c, ToField d, ToField e, ToField f,
177− ToField g, ToField h, ToField i, ToField j, ToField k, ToField l,
178− ToField m, ToField n, ToField o, ToField p, ToField q, ToField r,
179− ToField s)
180− => ToRow (a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s) where
181− toRow (a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s) =
182− [toField a, toField b, toField c, toField d, toField e, toField f,
183− toField g, toField h, toField i, toField j, toField k, toField l,
184− toField m, toField n, toField o, toField p, toField q, toField r,
185− toField s]
186−
187−instance (ToField a, ToField b, ToField c, ToField d, ToField e, ToField f,
188− ToField g, ToField h, ToField i, ToField j, ToField k, ToField l,
189− ToField m, ToField n, ToField o, ToField p, ToField q, ToField r,
190− ToField s, ToField t)
191− => ToRow (a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t) where
192− toRow (a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t) =
193− [toField a, toField b, toField c, toField d, toField e, toField f,
194− toField g, toField h, toField i, toField j, toField k, toField l,
195− toField m, toField n, toField o, toField p, toField q, toField r,
196− toField s, toField t]
197−
19889instance (ToField a) => ToRow [a] where
19990 toRow = map toField
200−
201−instance (ToRow a, ToRow b) => ToRow (a :. b) where
202− toRow (a :. b) = toRow a ++ toRow b
203−
204−
205−-- Type class for default implementation of ToRow using generics
206−class GToRow f where
207− gtoRow :: f p -> [Action]
208−
209−instance GToRow f => GToRow (M1 c i f) where
210− gtoRow (M1 x) = gtoRow x
211−
212−instance (GToRow f, GToRow g) => GToRow (f :*: g) where
213− gtoRow (f :*: g) = gtoRow f ++ gtoRow g
214−
215−instance (ToField a) => GToRow (K1 R a) where
216− gtoRow (K1 a) = [toField a]
217−
218−instance GToRow U1 where
219− gtoRow _ = []
src/Database/PostgreSQL/Simple/ToRow.hs-bootdeleted−18
@@ -1,18 +0,0 @@
1−{-# LANGUAGE DefaultSignatures, FlexibleInstances, FlexibleContexts #-}
2−module Database.PostgreSQL.Simple.ToRow (
3− ToRow(..)
4− ) where
5−
6−import Database.PostgreSQL.Simple.Types
7−import {-# SOURCE #-} Database.PostgreSQL.Simple.ToField
8−import GHC.Generics
9−
10−class ToRow a where
11− toRow :: a -> [Action]
12− default toRow :: (Generic a, GToRow (Rep a)) => a -> [Action]
13− toRow = gtoRow . from
14−
15−class GToRow f where
16− gtoRow :: f p -> [Action]
17−
18−instance ToField a => ToRow (Only a)
src/Database/PostgreSQL/Simple/Transaction.hsdeleted−264
@@ -1,264 +0,0 @@
1−{-# LANGUAGE RecordWildCards, ScopedTypeVariables #-}
2−
3−------------------------------------------------------------------------------
4−-- |
5−-- Module: Database.PostgreSQL.Simple.Transaction
6−-- Copyright: (c) 2011-2013 Leon P Smith
7−-- (c) 2013 Joey Adams
8−-- License: BSD3
9−-- Maintainer: Leon P Smith <leon@melding-monads.com>
10−--
11−------------------------------------------------------------------------------
12−
13−module Database.PostgreSQL.Simple.Transaction
14− (
15− -- * Transaction handling
16− withTransaction
17− , withTransactionLevel
18− , withTransactionMode
19− , withTransactionModeRetry
20− , withTransactionModeRetry'
21− , withTransactionSerializable
22− , TransactionMode(..)
23− , IsolationLevel(..)
24− , ReadWriteMode(..)
25− , defaultTransactionMode
26− , defaultIsolationLevel
27− , defaultReadWriteMode
28−-- , Base.autocommit
29− , begin
30− , beginLevel
31− , beginMode
32− , commit
33− , rollback
34−
35− -- * Savepoint
36− , withSavepoint
37− , Savepoint
38− , newSavepoint
39− , releaseSavepoint
40− , rollbackToSavepoint
41− , rollbackToAndReleaseSavepoint
42−
43− -- * Error predicates
44− , isSerializationError
45− , isNoActiveTransactionError
46− , isFailedTransactionError
47− ) where
48−
49−import qualified Control.Exception as E
50−import qualified Data.ByteString as B
51−import Database.PostgreSQL.Simple.Internal
52−import Database.PostgreSQL.Simple.Types
53−import Database.PostgreSQL.Simple.Errors
54−import Database.PostgreSQL.Simple.Compat (mask, (<>))
55−
56−
57−-- | Of the four isolation levels defined by the SQL standard,
58−-- these are the three levels distinguished by PostgreSQL as of version 9.0.
59−-- See <https://www.postgresql.org/docs/9.5/static/transaction-iso.html>
60−-- for more information. Note that prior to PostgreSQL 9.0, 'RepeatableRead'
61−-- was equivalent to 'Serializable'.
62−
63−data IsolationLevel
64− = DefaultIsolationLevel -- ^ the isolation level will be taken from
65− -- PostgreSQL's per-connection
66− -- @default_transaction_isolation@ variable,
67− -- which is initialized according to the
68− -- server's config. The default configuration
69− -- is 'ReadCommitted'.
70− | ReadCommitted
71− | RepeatableRead
72− | Serializable
73− deriving (Show, Eq, Ord, Enum, Bounded)
74−
75−data ReadWriteMode
76− = DefaultReadWriteMode -- ^ the read-write mode will be taken from
77− -- PostgreSQL's per-connection
78− -- @default_transaction_read_only@ variable,
79− -- which is initialized according to the
80− -- server's config. The default configuration
81− -- is 'ReadWrite'.
82− | ReadWrite
83− | ReadOnly
84− deriving (Show, Eq, Ord, Enum, Bounded)
85−
86−data TransactionMode = TransactionMode {
87− isolationLevel :: !IsolationLevel,
88− readWriteMode :: !ReadWriteMode
89− } deriving (Show, Eq)
90−
91−defaultTransactionMode :: TransactionMode
92−defaultTransactionMode = TransactionMode
93− defaultIsolationLevel
94− defaultReadWriteMode
95−
96−defaultIsolationLevel :: IsolationLevel
97−defaultIsolationLevel = DefaultIsolationLevel
98−
99−defaultReadWriteMode :: ReadWriteMode
100−defaultReadWriteMode = DefaultReadWriteMode
101−
102−-- | Execute an action inside a SQL transaction.
103−--
104−-- This function initiates a transaction with a \"@begin
105−-- transaction@\" statement, then executes the supplied action. If
106−-- the action succeeds, the transaction will be completed with
107−-- 'Base.commit' before this function returns.
108−--
109−-- If the action throws /any/ kind of exception (not just a
110−-- PostgreSQL-related exception), the transaction will be rolled back using
111−-- 'rollback', then the exception will be rethrown.
112−--
113−-- For nesting transactions, see 'withSavepoint'.
114−withTransaction :: Connection -> IO a -> IO a
115−withTransaction = withTransactionMode defaultTransactionMode
116−
117−-- | Execute an action inside of a 'Serializable' transaction. If a
118−-- serialization failure occurs, roll back the transaction and try again.
119−-- Be warned that this may execute the IO action multiple times.
120−--
121−-- A 'Serializable' transaction creates the illusion that your program has
122−-- exclusive access to the database. This means that, even in a concurrent
123−-- setting, you can perform queries in sequence without having to worry about
124−-- what might happen between one statement and the next.
125−--
126−-- Think of it as STM, but without @retry@.
127−withTransactionSerializable :: Connection -> IO a -> IO a
128−withTransactionSerializable =
129− withTransactionModeRetry
130− TransactionMode
131− { isolationLevel = Serializable
132− , readWriteMode = ReadWrite
133− }
134− isSerializationError
135−
136−-- | Execute an action inside a SQL transaction with a given isolation level.
137−withTransactionLevel :: IsolationLevel -> Connection -> IO a -> IO a
138−withTransactionLevel lvl
139− = withTransactionMode defaultTransactionMode { isolationLevel = lvl }
140−
141−-- | Execute an action inside a SQL transaction with a given transaction mode.
142−withTransactionMode :: TransactionMode -> Connection -> IO a -> IO a
143−withTransactionMode mode conn act =
144− mask $ \restore -> do
145− beginMode mode conn
146− r <- restore act `E.onException` rollback_ conn
147− commit conn
148− return r
149−
150−-- | 'withTransactionModeRetry'' but with the exception type pinned to 'SqlError'.
151−withTransactionModeRetry :: TransactionMode -> (SqlError -> Bool) -> Connection -> IO a -> IO a
152−withTransactionModeRetry = withTransactionModeRetry'
153−
154−-- | Like 'withTransactionMode', but also takes a custom callback to
155−-- determine if a transaction should be retried if an exception occurs.
156−-- If the callback returns 'True', then the transaction will be retried.
157−-- If the callback returns 'False', or an exception other than an @e@
158−-- occurs then the transaction will be rolled back and the exception rethrown.
159−--
160−-- This is used to implement 'withTransactionSerializable'.
161−withTransactionModeRetry' :: forall a e. E.Exception e => TransactionMode -> (e -> Bool) -> Connection -> IO a -> IO a
162−withTransactionModeRetry' mode shouldRetry conn act =
163− mask $ \restore ->
164− retryLoop $ E.try $ do
165− a <- restore act `E.onException` rollback_ conn
166− commit conn
167− return a
168− where
169− retryLoop :: IO (Either e a) -> IO a
170− retryLoop act' = do
171− beginMode mode conn
172− r <- act'
173− case r of
174− Left e ->
175− case shouldRetry e of
176− True -> retryLoop act'
177− False -> E.throwIO e
178− Right a ->
179− return a
180−
181−-- | Rollback a transaction.
182−rollback :: Connection -> IO ()
183−rollback conn = execute_ conn "ROLLBACK" >> return ()
184−
185−-- | Rollback a transaction, ignoring any @IOErrors@
186−rollback_ :: Connection -> IO ()
187−rollback_ conn = rollback conn `E.catch` \(_ :: IOError) -> return ()
188−
189−-- | Commit a transaction.
190−commit :: Connection -> IO ()
191−commit conn = execute_ conn "COMMIT" >> return ()
192−
193−-- | Begin a transaction.
194−begin :: Connection -> IO ()
195−begin = beginMode defaultTransactionMode
196−
197−-- | Begin a transaction with a given isolation level
198−beginLevel :: IsolationLevel -> Connection -> IO ()
199−beginLevel lvl = beginMode defaultTransactionMode { isolationLevel = lvl }
200−
201−-- | Begin a transaction with a given transaction mode
202−beginMode :: TransactionMode -> Connection -> IO ()
203−beginMode mode conn = do
204− _ <- execute_ conn $! Query (B.concat ["BEGIN", isolevel, readmode])
205− return ()
206− where
207− isolevel = case isolationLevel mode of
208− DefaultIsolationLevel -> ""
209− ReadCommitted -> " ISOLATION LEVEL READ COMMITTED"
210− RepeatableRead -> " ISOLATION LEVEL REPEATABLE READ"
211− Serializable -> " ISOLATION LEVEL SERIALIZABLE"
212− readmode = case readWriteMode mode of
213− DefaultReadWriteMode -> ""
214− ReadWrite -> " READ WRITE"
215− ReadOnly -> " READ ONLY"
216−
217−------------------------------------------------------------------------
218−-- Savepoint
219−
220−-- | Create a savepoint, and roll back to it if an error occurs. This may only
221−-- be used inside of a transaction, and provides a sort of
222−-- \"nested transaction\".
223−--
224−-- See <https://www.postgresql.org/docs/9.5/static/sql-savepoint.html>
225−withSavepoint :: Connection -> IO a -> IO a
226−withSavepoint conn body =
227− mask $ \restore -> do
228− sp <- newSavepoint conn
229− r <- restore body `E.onException` rollbackToAndReleaseSavepoint conn sp
230− releaseSavepoint conn sp `E.catch` \err ->
231− if isFailedTransactionError err
232− then rollbackToAndReleaseSavepoint conn sp
233− else E.throwIO err
234− return r
235−
236−-- | Create a new savepoint. This may only be used inside of a transaction.
237−newSavepoint :: Connection -> IO Savepoint
238−newSavepoint conn = do
239− name <- newTempName conn
240− _ <- execute_ conn ("SAVEPOINT " <> name)
241− return (Savepoint name)
242−
243−-- | Destroy a savepoint, but retain its effects.
244−--
245−-- Warning: this will throw a 'SqlError' matching 'isFailedTransactionError' if
246−-- the transaction is aborted due to an error. 'commit' would merely warn and
247−-- roll back.
248−releaseSavepoint :: Connection -> Savepoint -> IO ()
249−releaseSavepoint conn (Savepoint name) =
250− execute_ conn ("RELEASE SAVEPOINT " <> name) >> return ()
251−
252−-- | Roll back to a savepoint. This will not release the savepoint.
253−rollbackToSavepoint :: Connection -> Savepoint -> IO ()
254−rollbackToSavepoint conn (Savepoint name) =
255− execute_ conn ("ROLLBACK TO SAVEPOINT " <> name) >> return ()
256−
257−-- | Roll back to a savepoint and release it. This is like calling
258−-- 'rollbackToSavepoint' followed by 'releaseSavepoint', but avoids a
259−-- round trip to the database server.
260−rollbackToAndReleaseSavepoint :: Connection -> Savepoint -> IO ()
261−rollbackToAndReleaseSavepoint conn (Savepoint name) =
262− execute_ conn sql >> return ()
263− where
264− sql = "ROLLBACK TO SAVEPOINT " <> name <> "; RELEASE SAVEPOINT " <> name
src/Database/PostgreSQL/Simple/TypeInfo.hsdeleted−121
@@ -1,121 +0,0 @@
1−{-# LANGUAGE RecordWildCards #-}
2−
3−------------------------------------------------------------------------------
4−-- |
5−-- Module: Database.PostgreSQL.Simple.TypeInfo
6−-- Copyright: (c) 2013 Leon P Smith
7−-- License: BSD3
8−-- Maintainer: Leon P Smith <leon@melding-monads.com>
9−-- Stability: experimental
10−--
11−-- This module provides convenient and efficient access to parts of the
12−-- @pg_type@ metatable. At the moment, this requires PostgreSQL 8.4 if
13−-- you need to work with types that do not appear in
14−-- 'Database.PostgreSQL.Simple.TypeInfo.Static'.
15−--
16−-- The current scheme could be more efficient, especially for some use
17−-- cases. In particular, connection pools that use many user-added
18−-- types and connect to a set of servers with identical (or at least
19−-- compatible) @pg_type@ and associated tables could share a common
20−-- typeinfo cache, thus saving memory and communication between the
21−-- client and server.
22−--
23−------------------------------------------------------------------------------
24−
25−module Database.PostgreSQL.Simple.TypeInfo
26− ( getTypeInfo
27− , TypeInfo(..)
28− , Attribute(..)
29− ) where
30−
31−import qualified Data.ByteString as B
32−import qualified Data.IntMap as IntMap
33−import qualified Data.Vector as V
34−import qualified Data.Vector.Mutable as MV
35−import Control.Concurrent.MVar
36−import Control.Exception (throw)
37−
38−import qualified Database.PostgreSQL.LibPQ as PQ
39−import {-# SOURCE #-} Database.PostgreSQL.Simple
40−import Database.PostgreSQL.Simple.Internal
41−import Database.PostgreSQL.Simple.Types
42−import Database.PostgreSQL.Simple.TypeInfo.Types
43−import Database.PostgreSQL.Simple.TypeInfo.Static
44−
45−-- | Returns the metadata of the type with a particular oid. To find
46−-- this data, 'getTypeInfo' first consults postgresql-simple's
47−-- built-in 'staticTypeInfo' table, then checks the connection's
48−-- typeinfo cache. Finally, the database's 'pg_type' table will
49−-- be queried only if necessary, and the result will be stored
50−-- in the connections's cache.
51−
52−getTypeInfo :: Connection -> PQ.Oid -> IO TypeInfo
53−getTypeInfo conn@Connection{..} oid' =
54− case staticTypeInfo oid' of
55− Just name' -> return name'
56− Nothing -> modifyMVar connectionObjects $ getTypeInfo' conn oid'
57−
58−getTypeInfo' :: Connection -> PQ.Oid -> TypeInfoCache
59− -> IO (TypeInfoCache, TypeInfo)
60−getTypeInfo' conn oid' oidmap =
61− case IntMap.lookup (oid2int oid') oidmap of
62− Just typeinfo -> return (oidmap, typeinfo)
63− Nothing -> do
64− names <- query conn "SELECT oid, typcategory, typdelim, typname,\
65− \ typelem, typrelid\
66− \ FROM pg_type WHERE oid = ?"
67− (Only oid')
68− (oidmap', typeInfo) <-
69− case names of
70− [] -> return $ throw (fatalError "invalid type oid")
71− [(typoid, typcategory, typdelim, typname, typelem_, typrelid)] -> do
72− case typcategory of
73− 'A' -> do
74− (oidmap', typelem) <- getTypeInfo' conn typelem_ oidmap
75− let !typeInfo = Array{..}
76− return $! (oidmap', typeInfo)
77− 'R' -> do
78− rngsubtypeOids <- query conn "SELECT rngsubtype\
79− \ FROM pg_range\
80− \ WHERE rngtypid = ?"
81− (Only oid')
82− case rngsubtypeOids of
83− [Only rngsubtype_] -> do
84− (oidmap', rngsubtype) <-
85− getTypeInfo' conn rngsubtype_ oidmap
86− let !typeInfo = Range{..}
87− return $! (oidmap', typeInfo)
88− _ -> fail "range subtype query failed to return exactly one result"
89− 'C' -> do
90− cols <- query conn "SELECT attname, atttypid\
91− \ FROM pg_attribute\
92− \ WHERE attrelid = ?\
93− \ AND attnum > 0\
94− \ AND NOT attisdropped\
95− \ ORDER BY attnum"
96− (Only typrelid)
97− vec <- MV.new $! length cols
98− (oidmap', attributes) <- getAttInfos conn cols oidmap vec 0
99− let !typeInfo = Composite{..}
100− return $! (oidmap', typeInfo)
101− _ -> do
102− let !typeInfo = Basic{..}
103− return $! (oidmap, typeInfo)
104− _ -> fail "typename query returned more than one result"
105− -- oid is a primary key, so the query should
106− -- never return more than one result
107− let !oidmap'' = IntMap.insert (oid2int oid') typeInfo oidmap'
108− return $! (oidmap'', typeInfo)
109−
110−getAttInfos :: Connection -> [(B.ByteString, PQ.Oid)] -> TypeInfoCache
111− -> MV.IOVector Attribute -> Int
112− -> IO (TypeInfoCache, V.Vector Attribute)
113−getAttInfos conn cols oidmap vec n =
114− case cols of
115− [] -> do
116− !attributes <- V.unsafeFreeze vec
117− return $! (oidmap, attributes)
118− ((attname, attTypeOid):xs) -> do
119− (oidmap', atttype) <- getTypeInfo' conn attTypeOid oidmap
120− MV.write vec n $! Attribute{..}
121− getAttInfos conn xs oidmap' vec (n+1)
src/Database/PostgreSQL/Simple/TypeInfo/Macro.hsdeleted−53
@@ -1,53 +0,0 @@
1−{-# LANGUAGE CPP #-}
2−#if __GLASGOW_HASKELL__ >= 800
3−{-# LANGUAGE TemplateHaskellQuotes #-}
4−#else
5−{-# LANGUAGE TemplateHaskell #-}
6−#endif
7−
8−------------------------------------------------------------------------------
9−-- |
10−-- Module: Database.PostgreSQL.Simple.TypeInfo.Macro
11−-- Copyright: (c) 2013 Leon P Smith
12−-- License: BSD3
13−-- Maintainer: Leon P Smith <leon@melding-monads.com>
14−-- Stability: experimental
15−--
16−-- A Template Haskell macro for efficiently checking membership in
17−-- a set of type oids.
18−--
19−------------------------------------------------------------------------------
20−
21−module Database.PostgreSQL.Simple.TypeInfo.Macro
22− ( mkCompats
23− , inlineTypoid
24− ) where
25−
26−import Database.PostgreSQL.Simple.TypeInfo.Static
27−import Database.PostgreSQL.Simple.Types (Oid(..))
28−import Language.Haskell.TH
29−
30−-- | Returns an expression that has type @'Oid' -> 'Bool'@, true if the
31−-- oid is equal to any one of the 'typoid's of the given 'TypeInfo's.
32−mkCompats :: [TypeInfo] -> ExpQ
33−mkCompats tys = do
34− x <- newName "x"
35− lamE [conP 'Oid [varP x]] $ caseE (varE x) (map alt tys ++ [catchAll])
36− where
37− alt :: TypeInfo -> MatchQ
38− alt ty = match (inlineTypoidP ty) (normalB [| True |]) []
39−
40− catchAll :: MatchQ
41− catchAll = match wildP (normalB [| False |]) []
42−
43−-- | Literally substitute the 'typoid' of a 'TypeInfo' expression.
44−-- Returns an expression of type 'Oid'. Useful because GHC tends
45−-- not to fold constants.
46−inlineTypoid :: TypeInfo -> ExpQ
47−inlineTypoid ty = conE 'Oid `appE` litE (getTypoid ty)
48−
49−inlineTypoidP :: TypeInfo -> PatQ
50−inlineTypoidP ty = litP (getTypoid ty)
51−
52−getTypoid :: TypeInfo -> Lit
53−getTypoid ty = let (Oid x) = typoid ty in integerL (fromIntegral x)
src/Database/PostgreSQL/Simple/TypeInfo/Static.hsdeleted−1802
@@ -1,1802 +0,0 @@
1−------------------------------------------------------------------------------
2−-- |
3−-- Module: Database.PostgreSQL.Simple.TypeInfo
4−-- Copyright: (c) 2011-2012 Leon P Smith
5−-- License: BSD3
6−-- Maintainer: Leon P Smith <leon@melding-monads.com>
7−-- Stability: experimental
8−--
9−-- This module contains portions of the @pg_type@ table that are relevant
10−-- to postgresql-simple and are believed to not change between PostgreSQL
11−-- versions.
12−--
13−------------------------------------------------------------------------------
14−
15−-- Note that this file is generated by tools/GenTypeInfo.hs, and should
16−-- not be edited directly
17−
18−module Database.PostgreSQL.Simple.TypeInfo.Static
19− ( TypeInfo(..)
20− , staticTypeInfo
21− , bool
22− , boolOid
23− , bytea
24− , byteaOid
25− , char
26− , charOid
27− , name
28− , nameOid
29− , int8
30− , int8Oid
31− , int2
32− , int2Oid
33− , int4
34− , int4Oid
35− , regproc
36− , regprocOid
37− , text
38− , textOid
39− , oid
40− , oidOid
41− , tid
42− , tidOid
43− , xid
44− , xidOid
45− , cid
46− , cidOid
47− , xml
48− , xmlOid
49− , point
50− , pointOid
51− , lseg
52− , lsegOid
53− , path
54− , pathOid
55− , box
56− , boxOid
57− , polygon
58− , polygonOid
59− , line
60− , lineOid
61− , cidr
62− , cidrOid
63− , float4
64− , float4Oid
65− , float8
66− , float8Oid
67− , unknown
68− , unknownOid
69− , circle
70− , circleOid
71− , money
72− , moneyOid
73− , macaddr
74− , macaddrOid
75− , inet
76− , inetOid
77− , bpchar
78− , bpcharOid
79− , varchar
80− , varcharOid
81− , date
82− , dateOid
83− , time
84− , timeOid
85− , timestamp
86− , timestampOid
87− , timestamptz
88− , timestamptzOid
89− , interval
90− , intervalOid
91− , timetz
92− , timetzOid
93− , bit
94− , bitOid
95− , varbit
96− , varbitOid
97− , numeric
98− , numericOid
99− , refcursor
100− , refcursorOid
101− , record
102− , recordOid
103− , void
104− , voidOid
105− , array_record
106− , array_recordOid
107− , regprocedure
108− , regprocedureOid
109− , regoper
110− , regoperOid
111− , regoperator
112− , regoperatorOid
113− , regclass
114− , regclassOid
115− , regtype
116− , regtypeOid
117− , uuid
118− , uuidOid
119− , json
120− , jsonOid
121− , jsonb
122− , jsonbOid
123− , int2vector
124− , int2vectorOid
125− , oidvector
126− , oidvectorOid
127− , array_xml
128− , array_xmlOid
129− , array_json
130− , array_jsonOid
131− , array_line
132− , array_lineOid
133− , array_cidr
134− , array_cidrOid
135− , array_circle
136− , array_circleOid
137− , array_money
138− , array_moneyOid
139− , array_bool
140− , array_boolOid
141− , array_bytea
142− , array_byteaOid
143− , array_char
144− , array_charOid
145− , array_name
146− , array_nameOid
147− , array_int2
148− , array_int2Oid
149− , array_int2vector
150− , array_int2vectorOid
151− , array_int4
152− , array_int4Oid
153− , array_regproc
154− , array_regprocOid
155− , array_text
156− , array_textOid
157− , array_tid
158− , array_tidOid
159− , array_xid
160− , array_xidOid
161− , array_cid
162− , array_cidOid
163− , array_oidvector
164− , array_oidvectorOid
165− , array_bpchar
166− , array_bpcharOid
167− , array_varchar
168− , array_varcharOid
169− , array_int8
170− , array_int8Oid
171− , array_point
172− , array_pointOid
173− , array_lseg
174− , array_lsegOid
175− , array_path
176− , array_pathOid
177− , array_box
178− , array_boxOid
179− , array_float4
180− , array_float4Oid
181− , array_float8
182− , array_float8Oid
183− , array_polygon
184− , array_polygonOid
185− , array_oid
186− , array_oidOid
187− , array_macaddr
188− , array_macaddrOid
189− , array_inet
190− , array_inetOid
191− , array_timestamp
192− , array_timestampOid
193− , array_date
194− , array_dateOid
195− , array_time
196− , array_timeOid
197− , array_timestamptz
198− , array_timestamptzOid
199− , array_interval
200− , array_intervalOid
201− , array_numeric
202− , array_numericOid
203− , array_timetz
204− , array_timetzOid
205− , array_bit
206− , array_bitOid
207− , array_varbit
208− , array_varbitOid
209− , array_refcursor
210− , array_refcursorOid
211− , array_regprocedure
212− , array_regprocedureOid
213− , array_regoper
214− , array_regoperOid
215− , array_regoperator
216− , array_regoperatorOid
217− , array_regclass
218− , array_regclassOid
219− , array_regtype
220− , array_regtypeOid
221− , array_uuid
222− , array_uuidOid
223− , array_jsonb
224− , array_jsonbOid
225− , int4range
226− , int4rangeOid
227− , _int4range
228− , _int4rangeOid
229− , numrange
230− , numrangeOid
231− , _numrange
232− , _numrangeOid
233− , tsrange
234− , tsrangeOid
235− , _tsrange
236− , _tsrangeOid
237− , tstzrange
238− , tstzrangeOid
239− , _tstzrange
240− , _tstzrangeOid
241− , daterange
242− , daterangeOid
243− , _daterange
244− , _daterangeOid
245− , int8range
246− , int8rangeOid
247− , _int8range
248− , _int8rangeOid
249− ) where
250−
251−import Database.PostgreSQL.LibPQ (Oid(..))
252−import Database.PostgreSQL.Simple.TypeInfo.Types
253−
254−staticTypeInfo :: Oid -> Maybe TypeInfo
255−staticTypeInfo (Oid x) = case x of
256− 16 -> Just bool
257− 17 -> Just bytea
258− 18 -> Just char
259− 19 -> Just name
260− 20 -> Just int8
261− 21 -> Just int2
262− 23 -> Just int4
263− 24 -> Just regproc
264− 25 -> Just text
265− 26 -> Just oid
266− 27 -> Just tid
267− 28 -> Just xid
268− 29 -> Just cid
269− 142 -> Just xml
270− 600 -> Just point
271− 601 -> Just lseg
272− 602 -> Just path
273− 603 -> Just box
274− 604 -> Just polygon
275− 628 -> Just line
276− 650 -> Just cidr
277− 700 -> Just float4
278− 701 -> Just float8
279− 705 -> Just unknown
280− 718 -> Just circle
281− 790 -> Just money
282− 829 -> Just macaddr
283− 869 -> Just inet
284− 1042 -> Just bpchar
285− 1043 -> Just varchar
286− 1082 -> Just date
287− 1083 -> Just time
288− 1114 -> Just timestamp
289− 1184 -> Just timestamptz
290− 1186 -> Just interval
291− 1266 -> Just timetz
292− 1560 -> Just bit
293− 1562 -> Just varbit
294− 1700 -> Just numeric
295− 1790 -> Just refcursor
296− 2249 -> Just record
297− 2278 -> Just void
298− 2287 -> Just array_record
299− 2202 -> Just regprocedure
300− 2203 -> Just regoper
301− 2204 -> Just regoperator
302− 2205 -> Just regclass
303− 2206 -> Just regtype
304− 2950 -> Just uuid
305− 114 -> Just json
306− 3802 -> Just jsonb
307− 22 -> Just int2vector
308− 30 -> Just oidvector
309− 143 -> Just array_xml
310− 199 -> Just array_json
311− 629 -> Just array_line
312− 651 -> Just array_cidr
313− 719 -> Just array_circle
314− 791 -> Just array_money
315− 1000 -> Just array_bool
316− 1001 -> Just array_bytea
317− 1002 -> Just array_char
318− 1003 -> Just array_name
319− 1005 -> Just array_int2
320− 1006 -> Just array_int2vector
321− 1007 -> Just array_int4
322− 1008 -> Just array_regproc
323− 1009 -> Just array_text
324− 1010 -> Just array_tid
325− 1011 -> Just array_xid
326− 1012 -> Just array_cid
327− 1013 -> Just array_oidvector
328− 1014 -> Just array_bpchar
329− 1015 -> Just array_varchar
330− 1016 -> Just array_int8
331− 1017 -> Just array_point
332− 1018 -> Just array_lseg
333− 1019 -> Just array_path
334− 1020 -> Just array_box
335− 1021 -> Just array_float4
336− 1022 -> Just array_float8
337− 1027 -> Just array_polygon
338− 1028 -> Just array_oid
339− 1040 -> Just array_macaddr
340− 1041 -> Just array_inet
341− 1115 -> Just array_timestamp
342− 1182 -> Just array_date
343− 1183 -> Just array_time
344− 1185 -> Just array_timestamptz
345− 1187 -> Just array_interval
346− 1231 -> Just array_numeric
347− 1270 -> Just array_timetz
348− 1561 -> Just array_bit
349− 1563 -> Just array_varbit
350− 2201 -> Just array_refcursor
351− 2207 -> Just array_regprocedure
352− 2208 -> Just array_regoper
353− 2209 -> Just array_regoperator
354− 2210 -> Just array_regclass
355− 2211 -> Just array_regtype
356− 2951 -> Just array_uuid
357− 3807 -> Just array_jsonb
358− 3904 -> Just int4range
359− 3905 -> Just _int4range
360− 3906 -> Just numrange
361− 3907 -> Just _numrange
362− 3908 -> Just tsrange
363− 3909 -> Just _tsrange
364− 3910 -> Just tstzrange
365− 3911 -> Just _tstzrange
366− 3912 -> Just daterange
367− 3913 -> Just _daterange
368− 3926 -> Just int8range
369− 3927 -> Just _int8range
370− _ -> Nothing
371−
372−bool :: TypeInfo
373−bool = Basic {
374− typoid = boolOid,
375− typcategory = 'B',
376− typdelim = ',',
377− typname = "bool"
378− }
379−
380−boolOid :: Oid
381−boolOid = Oid 16
382−{-# INLINE boolOid #-}
383−
384−bytea :: TypeInfo
385−bytea = Basic {
386− typoid = byteaOid,
387− typcategory = 'U',
388− typdelim = ',',
389− typname = "bytea"
390− }
391−
392−byteaOid :: Oid
393−byteaOid = Oid 17
394−{-# INLINE byteaOid #-}
395−
396−char :: TypeInfo
397−char = Basic {
398− typoid = charOid,
399− typcategory = 'S',
400− typdelim = ',',
401− typname = "char"
402− }
403−
404−charOid :: Oid
405−charOid = Oid 18
406−{-# INLINE charOid #-}
407−
408−name :: TypeInfo
409−name = Basic {
410− typoid = nameOid,
411− typcategory = 'S',
412− typdelim = ',',
413− typname = "name"
414− }
415−
416−nameOid :: Oid
417−nameOid = Oid 19
418−{-# INLINE nameOid #-}
419−
420−int8 :: TypeInfo
421−int8 = Basic {
422− typoid = int8Oid,
423− typcategory = 'N',
424− typdelim = ',',
425− typname = "int8"
426− }
427−
428−int8Oid :: Oid
429−int8Oid = Oid 20
430−{-# INLINE int8Oid #-}
431−
432−int2 :: TypeInfo
433−int2 = Basic {
434− typoid = int2Oid,
435− typcategory = 'N',
436− typdelim = ',',
437− typname = "int2"
438− }
439−
440−int2Oid :: Oid
441−int2Oid = Oid 21
442−{-# INLINE int2Oid #-}
443−
444−int4 :: TypeInfo
445−int4 = Basic {
446− typoid = int4Oid,
447− typcategory = 'N',
448− typdelim = ',',
449− typname = "int4"
450− }
451−
452−int4Oid :: Oid
453−int4Oid = Oid 23
454−{-# INLINE int4Oid #-}
455−
456−regproc :: TypeInfo
457−regproc = Basic {
458− typoid = regprocOid,
459− typcategory = 'N',
460− typdelim = ',',
461− typname = "regproc"
462− }
463−
464−regprocOid :: Oid
465−regprocOid = Oid 24
466−{-# INLINE regprocOid #-}
467−
468−text :: TypeInfo
469−text = Basic {
470− typoid = textOid,
471− typcategory = 'S',
472− typdelim = ',',
473− typname = "text"
474− }
475−
476−textOid :: Oid
477−textOid = Oid 25
478−{-# INLINE textOid #-}
479−
480−oid :: TypeInfo
481−oid = Basic {
482− typoid = oidOid,
483− typcategory = 'N',
484− typdelim = ',',
485− typname = "oid"
486− }
487−
488−oidOid :: Oid
489−oidOid = Oid 26
490−{-# INLINE oidOid #-}
491−
492−tid :: TypeInfo
493−tid = Basic {
494− typoid = tidOid,
495− typcategory = 'U',
496− typdelim = ',',
497− typname = "tid"
498− }
499−
500−tidOid :: Oid
501−tidOid = Oid 27
502−{-# INLINE tidOid #-}
503−
504−xid :: TypeInfo
505−xid = Basic {
506− typoid = xidOid,
507− typcategory = 'U',
508− typdelim = ',',
509− typname = "xid"
510− }
511−
512−xidOid :: Oid
513−xidOid = Oid 28
514−{-# INLINE xidOid #-}
515−
516−cid :: TypeInfo
517−cid = Basic {
518− typoid = cidOid,
519− typcategory = 'U',
520− typdelim = ',',
521− typname = "cid"
522− }
523−
524−cidOid :: Oid
525−cidOid = Oid 29
526−{-# INLINE cidOid #-}
527−
528−xml :: TypeInfo
529−xml = Basic {
530− typoid = xmlOid,
531− typcategory = 'U',
532− typdelim = ',',
533− typname = "xml"
534− }
535−
536−xmlOid :: Oid
537−xmlOid = Oid 142
538−{-# INLINE xmlOid #-}
539−
540−point :: TypeInfo
541−point = Basic {
542− typoid = pointOid,
543− typcategory = 'G',
544− typdelim = ',',
545− typname = "point"
546− }
547−
548−pointOid :: Oid
549−pointOid = Oid 600
550−{-# INLINE pointOid #-}
551−
552−lseg :: TypeInfo
553−lseg = Basic {
554− typoid = lsegOid,
555− typcategory = 'G',
556− typdelim = ',',
557− typname = "lseg"
558− }
559−
560−lsegOid :: Oid
561−lsegOid = Oid 601
562−{-# INLINE lsegOid #-}
563−
564−path :: TypeInfo
565−path = Basic {
566− typoid = pathOid,
567− typcategory = 'G',
568− typdelim = ',',
569− typname = "path"
570− }
571−
572−pathOid :: Oid
573−pathOid = Oid 602
574−{-# INLINE pathOid #-}
575−
576−box :: TypeInfo
577−box = Basic {
578− typoid = boxOid,
579− typcategory = 'G',
580− typdelim = ';',
581− typname = "box"
582− }
583−
584−boxOid :: Oid
585−boxOid = Oid 603
586−{-# INLINE boxOid #-}
587−
588−polygon :: TypeInfo
589−polygon = Basic {
590− typoid = polygonOid,
591− typcategory = 'G',
592− typdelim = ',',
593− typname = "polygon"
594− }
595−
596−polygonOid :: Oid
597−polygonOid = Oid 604
598−{-# INLINE polygonOid #-}
599−
600−line :: TypeInfo
601−line = Basic {
602− typoid = lineOid,
603− typcategory = 'G',
604− typdelim = ',',
605− typname = "line"
606− }
607−
608−lineOid :: Oid
609−lineOid = Oid 628
610−{-# INLINE lineOid #-}
611−
612−cidr :: TypeInfo
613−cidr = Basic {
614− typoid = cidrOid,
615− typcategory = 'I',
616− typdelim = ',',
617− typname = "cidr"
618− }
619−
620−cidrOid :: Oid
621−cidrOid = Oid 650
622−{-# INLINE cidrOid #-}
623−
624−float4 :: TypeInfo
625−float4 = Basic {
626− typoid = float4Oid,
627− typcategory = 'N',
628− typdelim = ',',
629− typname = "float4"
630− }
631−
632−float4Oid :: Oid
633−float4Oid = Oid 700
634−{-# INLINE float4Oid #-}
635−
636−float8 :: TypeInfo
637−float8 = Basic {
638− typoid = float8Oid,
639− typcategory = 'N',
640− typdelim = ',',
641− typname = "float8"
642− }
643−
644−float8Oid :: Oid
645−float8Oid = Oid 701
646−{-# INLINE float8Oid #-}
647−
648−unknown :: TypeInfo
649−unknown = Basic {
650− typoid = unknownOid,
651− typcategory = 'X',
652− typdelim = ',',
653− typname = "unknown"
654− }
655−
656−unknownOid :: Oid
657−unknownOid = Oid 705
658−{-# INLINE unknownOid #-}
659−
660−circle :: TypeInfo
661−circle = Basic {
662− typoid = circleOid,
663− typcategory = 'G',
664− typdelim = ',',
665− typname = "circle"
666− }
667−
668−circleOid :: Oid
669−circleOid = Oid 718
670−{-# INLINE circleOid #-}
671−
672−money :: TypeInfo
673−money = Basic {
674− typoid = moneyOid,
675− typcategory = 'N',
676− typdelim = ',',
677− typname = "money"
678− }
679−
680−moneyOid :: Oid
681−moneyOid = Oid 790
682−{-# INLINE moneyOid #-}
683−
684−macaddr :: TypeInfo
685−macaddr = Basic {
686− typoid = macaddrOid,
687− typcategory = 'U',
688− typdelim = ',',
689− typname = "macaddr"
690− }
691−
692−macaddrOid :: Oid
693−macaddrOid = Oid 829
694−{-# INLINE macaddrOid #-}
695−
696−inet :: TypeInfo
697−inet = Basic {
698− typoid = inetOid,
699− typcategory = 'I',
700− typdelim = ',',
701− typname = "inet"
702− }
703−
704−inetOid :: Oid
705−inetOid = Oid 869
706−{-# INLINE inetOid #-}
707−
708−bpchar :: TypeInfo
709−bpchar = Basic {
710− typoid = bpcharOid,
711− typcategory = 'S',
712− typdelim = ',',
713− typname = "bpchar"
714− }
715−
716−bpcharOid :: Oid
717−bpcharOid = Oid 1042
718−{-# INLINE bpcharOid #-}
719−
720−varchar :: TypeInfo
721−varchar = Basic {
722− typoid = varcharOid,
723− typcategory = 'S',
724− typdelim = ',',
725− typname = "varchar"
726− }
727−
728−varcharOid :: Oid
729−varcharOid = Oid 1043
730−{-# INLINE varcharOid #-}
731−
732−date :: TypeInfo
733−date = Basic {
734− typoid = dateOid,
735− typcategory = 'D',
736− typdelim = ',',
737− typname = "date"
738− }
739−
740−dateOid :: Oid
741−dateOid = Oid 1082
742−{-# INLINE dateOid #-}
743−
744−time :: TypeInfo
745−time = Basic {
746− typoid = timeOid,
747− typcategory = 'D',
748− typdelim = ',',
749− typname = "time"
750− }
751−
752−timeOid :: Oid
753−timeOid = Oid 1083
754−{-# INLINE timeOid #-}
755−
756−timestamp :: TypeInfo
757−timestamp = Basic {
758− typoid = timestampOid,
759− typcategory = 'D',
760− typdelim = ',',
761− typname = "timestamp"
762− }
763−
764−timestampOid :: Oid
765−timestampOid = Oid 1114
766−{-# INLINE timestampOid #-}
767−
768−timestamptz :: TypeInfo
769−timestamptz = Basic {
770− typoid = timestamptzOid,
771− typcategory = 'D',
772− typdelim = ',',
773− typname = "timestamptz"
774− }
775−
776−timestamptzOid :: Oid
777−timestamptzOid = Oid 1184
778−{-# INLINE timestamptzOid #-}
779−
780−interval :: TypeInfo
781−interval = Basic {
782− typoid = intervalOid,
783− typcategory = 'T',
784− typdelim = ',',
785− typname = "interval"
786− }
787−
788−intervalOid :: Oid
789−intervalOid = Oid 1186
790−{-# INLINE intervalOid #-}
791−
792−timetz :: TypeInfo
793−timetz = Basic {
794− typoid = timetzOid,
795− typcategory = 'D',
796− typdelim = ',',
797− typname = "timetz"
798− }
799−
800−timetzOid :: Oid
801−timetzOid = Oid 1266
802−{-# INLINE timetzOid #-}
803−
804−bit :: TypeInfo
805−bit = Basic {
806− typoid = bitOid,
807− typcategory = 'V',
808− typdelim = ',',
809− typname = "bit"
810− }
811−
812−bitOid :: Oid
813−bitOid = Oid 1560
814−{-# INLINE bitOid #-}
815−
816−varbit :: TypeInfo
817−varbit = Basic {
818− typoid = varbitOid,
819− typcategory = 'V',
820− typdelim = ',',
821− typname = "varbit"
822− }
823−
824−varbitOid :: Oid
825−varbitOid = Oid 1562
826−{-# INLINE varbitOid #-}
827−
828−numeric :: TypeInfo
829−numeric = Basic {
830− typoid = numericOid,
831− typcategory = 'N',
832− typdelim = ',',
833− typname = "numeric"
834− }
835−
836−numericOid :: Oid
837−numericOid = Oid 1700
838−{-# INLINE numericOid #-}
839−
840−refcursor :: TypeInfo
841−refcursor = Basic {
842− typoid = refcursorOid,
843− typcategory = 'U',
844− typdelim = ',',
845− typname = "refcursor"
846− }
847−
848−refcursorOid :: Oid
849−refcursorOid = Oid 1790
850−{-# INLINE refcursorOid #-}
851−
852−record :: TypeInfo
853−record = Basic {
854− typoid = recordOid,
855− typcategory = 'P',
856− typdelim = ',',
857− typname = "record"
858− }
859−
860−recordOid :: Oid
861−recordOid = Oid 2249
862−{-# INLINE recordOid #-}
863−
864−void :: TypeInfo
865−void = Basic {
866− typoid = voidOid,
867− typcategory = 'P',
868− typdelim = ',',
869− typname = "void"
870− }
871−
872−voidOid :: Oid
873−voidOid = Oid 2278
874−{-# INLINE voidOid #-}
875−
876−array_record :: TypeInfo
877−array_record = Array {
878− typoid = array_recordOid,
879− typcategory = 'P',
880− typdelim = ',',
881− typname = "_record",
882− typelem = record
883− }
884−
885−array_recordOid :: Oid
886−array_recordOid = Oid 2287
887−{-# INLINE array_recordOid #-}
888−
889−regprocedure :: TypeInfo
890−regprocedure = Basic {
891− typoid = regprocedureOid,
892− typcategory = 'N',
893− typdelim = ',',
894− typname = "regprocedure"
895− }
896−
897−regprocedureOid :: Oid
898−regprocedureOid = Oid 2202
899−{-# INLINE regprocedureOid #-}
900−
901−regoper :: TypeInfo
902−regoper = Basic {
903− typoid = regoperOid,
904− typcategory = 'N',
905− typdelim = ',',
906− typname = "regoper"
907− }
908−
909−regoperOid :: Oid
910−regoperOid = Oid 2203
911−{-# INLINE regoperOid #-}
912−
913−regoperator :: TypeInfo
914−regoperator = Basic {
915− typoid = regoperatorOid,
916− typcategory = 'N',
917− typdelim = ',',
918− typname = "regoperator"
919− }
920−
921−regoperatorOid :: Oid
922−regoperatorOid = Oid 2204
923−{-# INLINE regoperatorOid #-}
924−
925−regclass :: TypeInfo
926−regclass = Basic {
927− typoid = regclassOid,
928− typcategory = 'N',
929− typdelim = ',',
930− typname = "regclass"
931− }
932−
933−regclassOid :: Oid
934−regclassOid = Oid 2205
935−{-# INLINE regclassOid #-}
936−
937−regtype :: TypeInfo
938−regtype = Basic {
939− typoid = regtypeOid,
940− typcategory = 'N',
941− typdelim = ',',
942− typname = "regtype"
943− }
944−
945−regtypeOid :: Oid
946−regtypeOid = Oid 2206
947−{-# INLINE regtypeOid #-}
948−
949−uuid :: TypeInfo
950−uuid = Basic {
951− typoid = uuidOid,
952− typcategory = 'U',
953− typdelim = ',',
954− typname = "uuid"
955− }
956−
957−uuidOid :: Oid
958−uuidOid = Oid 2950
959−{-# INLINE uuidOid #-}
960−
961−json :: TypeInfo
962−json = Basic {
963− typoid = jsonOid,
964− typcategory = 'U',
965− typdelim = ',',
966− typname = "json"
967− }
968−
969−jsonOid :: Oid
970−jsonOid = Oid 114
971−{-# INLINE jsonOid #-}
972−
973−jsonb :: TypeInfo
974−jsonb = Basic {
975− typoid = jsonbOid,
976− typcategory = 'U',
977− typdelim = ',',
978− typname = "jsonb"
979− }
980−
981−jsonbOid :: Oid
982−jsonbOid = Oid 3802
983−{-# INLINE jsonbOid #-}
984−
985−int2vector :: TypeInfo
986−int2vector = Array {
987− typoid = int2vectorOid,
988− typcategory = 'A',
989− typdelim = ',',
990− typname = "int2vector",
991− typelem = int2
992− }
993−
994−int2vectorOid :: Oid
995−int2vectorOid = Oid 22
996−{-# INLINE int2vectorOid #-}
997−
998−oidvector :: TypeInfo
999−oidvector = Array {
1000− typoid = oidvectorOid,
1001− typcategory = 'A',
1002− typdelim = ',',
1003− typname = "oidvector",
1004− typelem = oid
1005− }
1006−
1007−oidvectorOid :: Oid
1008−oidvectorOid = Oid 30
1009−{-# INLINE oidvectorOid #-}
1010−
1011−array_xml :: TypeInfo
1012−array_xml = Array {
1013− typoid = array_xmlOid,
1014− typcategory = 'A',
1015− typdelim = ',',
1016− typname = "_xml",
1017− typelem = xml
1018− }
1019−
1020−array_xmlOid :: Oid
1021−array_xmlOid = Oid 143
1022−{-# INLINE array_xmlOid #-}
1023−
1024−array_json :: TypeInfo
1025−array_json = Array {
1026− typoid = array_jsonOid,
1027− typcategory = 'A',
1028− typdelim = ',',
1029− typname = "_json",
1030− typelem = json
1031− }
1032−
1033−array_jsonOid :: Oid
1034−array_jsonOid = Oid 199
1035−{-# INLINE array_jsonOid #-}
1036−
1037−array_line :: TypeInfo
1038−array_line = Array {
1039− typoid = array_lineOid,
1040− typcategory = 'A',
1041− typdelim = ',',
1042− typname = "_line",
1043− typelem = line
1044− }
1045−
1046−array_lineOid :: Oid
1047−array_lineOid = Oid 629
1048−{-# INLINE array_lineOid #-}
1049−
1050−array_cidr :: TypeInfo
1051−array_cidr = Array {
1052− typoid = array_cidrOid,
1053− typcategory = 'A',
1054− typdelim = ',',
1055− typname = "_cidr",
1056− typelem = cidr
1057− }
1058−
1059−array_cidrOid :: Oid
1060−array_cidrOid = Oid 651
1061−{-# INLINE array_cidrOid #-}
1062−
1063−array_circle :: TypeInfo
1064−array_circle = Array {
1065− typoid = array_circleOid,
1066− typcategory = 'A',
1067− typdelim = ',',
1068− typname = "_circle",
1069− typelem = circle
1070− }
1071−
1072−array_circleOid :: Oid
1073−array_circleOid = Oid 719
1074−{-# INLINE array_circleOid #-}
1075−
1076−array_money :: TypeInfo
1077−array_money = Array {
1078− typoid = array_moneyOid,
1079− typcategory = 'A',
1080− typdelim = ',',
1081− typname = "_money",
1082− typelem = money
1083− }
1084−
1085−array_moneyOid :: Oid
1086−array_moneyOid = Oid 791
1087−{-# INLINE array_moneyOid #-}
1088−
1089−array_bool :: TypeInfo
1090−array_bool = Array {
1091− typoid = array_boolOid,
1092− typcategory = 'A',
1093− typdelim = ',',
1094− typname = "_bool",
1095− typelem = bool
1096− }
1097−
1098−array_boolOid :: Oid
1099−array_boolOid = Oid 1000
1100−{-# INLINE array_boolOid #-}
1101−
1102−array_bytea :: TypeInfo
1103−array_bytea = Array {
1104− typoid = array_byteaOid,
1105− typcategory = 'A',
1106− typdelim = ',',
1107− typname = "_bytea",
1108− typelem = bytea
1109− }
1110−
1111−array_byteaOid :: Oid
1112−array_byteaOid = Oid 1001
1113−{-# INLINE array_byteaOid #-}
1114−
1115−array_char :: TypeInfo
1116−array_char = Array {
1117− typoid = array_charOid,
1118− typcategory = 'A',
1119− typdelim = ',',
1120− typname = "_char",
1121− typelem = char
1122− }
1123−
1124−array_charOid :: Oid
1125−array_charOid = Oid 1002
1126−{-# INLINE array_charOid #-}
1127−
1128−array_name :: TypeInfo
1129−array_name = Array {
1130− typoid = array_nameOid,
1131− typcategory = 'A',
1132− typdelim = ',',
1133− typname = "_name",
1134− typelem = name
1135− }
1136−
1137−array_nameOid :: Oid
1138−array_nameOid = Oid 1003
1139−{-# INLINE array_nameOid #-}
1140−
1141−array_int2 :: TypeInfo
1142−array_int2 = Array {
1143− typoid = array_int2Oid,
1144− typcategory = 'A',
1145− typdelim = ',',
1146− typname = "_int2",
1147− typelem = int2
1148− }
1149−
1150−array_int2Oid :: Oid
1151−array_int2Oid = Oid 1005
1152−{-# INLINE array_int2Oid #-}
1153−
1154−array_int2vector :: TypeInfo
1155−array_int2vector = Array {
1156− typoid = array_int2vectorOid,
1157− typcategory = 'A',
1158− typdelim = ',',
1159− typname = "_int2vector",
1160− typelem = int2vector
1161− }
1162−
1163−array_int2vectorOid :: Oid
1164−array_int2vectorOid = Oid 1006
1165−{-# INLINE array_int2vectorOid #-}
1166−
1167−array_int4 :: TypeInfo
1168−array_int4 = Array {
1169− typoid = array_int4Oid,
1170− typcategory = 'A',
1171− typdelim = ',',
1172− typname = "_int4",
1173− typelem = int4
1174− }
1175−
1176−array_int4Oid :: Oid
1177−array_int4Oid = Oid 1007
1178−{-# INLINE array_int4Oid #-}
1179−
1180−array_regproc :: TypeInfo
1181−array_regproc = Array {
1182− typoid = array_regprocOid,
1183− typcategory = 'A',
1184− typdelim = ',',
1185− typname = "_regproc",
1186− typelem = regproc
1187− }
1188−
1189−array_regprocOid :: Oid
1190−array_regprocOid = Oid 1008
1191−{-# INLINE array_regprocOid #-}
1192−
1193−array_text :: TypeInfo
1194−array_text = Array {
1195− typoid = array_textOid,
1196− typcategory = 'A',
1197− typdelim = ',',
1198− typname = "_text",
1199− typelem = text
1200− }
1201−
1202−array_textOid :: Oid
1203−array_textOid = Oid 1009
1204−{-# INLINE array_textOid #-}
1205−
1206−array_tid :: TypeInfo
1207−array_tid = Array {
1208− typoid = array_tidOid,
1209− typcategory = 'A',
1210− typdelim = ',',
1211− typname = "_tid",
1212− typelem = tid
1213− }
1214−
1215−array_tidOid :: Oid
1216−array_tidOid = Oid 1010
1217−{-# INLINE array_tidOid #-}
1218−
1219−array_xid :: TypeInfo
1220−array_xid = Array {
1221− typoid = array_xidOid,
1222− typcategory = 'A',
1223− typdelim = ',',
1224− typname = "_xid",
1225− typelem = xid
1226− }
1227−
1228−array_xidOid :: Oid
1229−array_xidOid = Oid 1011
1230−{-# INLINE array_xidOid #-}
1231−
1232−array_cid :: TypeInfo
1233−array_cid = Array {
1234− typoid = array_cidOid,
1235− typcategory = 'A',
1236− typdelim = ',',
1237− typname = "_cid",
1238− typelem = cid
1239− }
1240−
1241−array_cidOid :: Oid
1242−array_cidOid = Oid 1012
1243−{-# INLINE array_cidOid #-}
1244−
1245−array_oidvector :: TypeInfo
1246−array_oidvector = Array {
1247− typoid = array_oidvectorOid,
1248− typcategory = 'A',
1249− typdelim = ',',
1250− typname = "_oidvector",
1251− typelem = oidvector
1252− }
1253−
1254−array_oidvectorOid :: Oid
1255−array_oidvectorOid = Oid 1013
1256−{-# INLINE array_oidvectorOid #-}
1257−
1258−array_bpchar :: TypeInfo
1259−array_bpchar = Array {
1260− typoid = array_bpcharOid,
1261− typcategory = 'A',
1262− typdelim = ',',
1263− typname = "_bpchar",
1264− typelem = bpchar
1265− }
1266−
1267−array_bpcharOid :: Oid
1268−array_bpcharOid = Oid 1014
1269−{-# INLINE array_bpcharOid #-}
1270−
1271−array_varchar :: TypeInfo
1272−array_varchar = Array {
1273− typoid = array_varcharOid,
1274− typcategory = 'A',
1275− typdelim = ',',
1276− typname = "_varchar",
1277− typelem = varchar
1278− }
1279−
1280−array_varcharOid :: Oid
1281−array_varcharOid = Oid 1015
1282−{-# INLINE array_varcharOid #-}
1283−
1284−array_int8 :: TypeInfo
1285−array_int8 = Array {
1286− typoid = array_int8Oid,
1287− typcategory = 'A',
1288− typdelim = ',',
1289− typname = "_int8",
1290− typelem = int8
1291− }
1292−
1293−array_int8Oid :: Oid
1294−array_int8Oid = Oid 1016
1295−{-# INLINE array_int8Oid #-}
1296−
1297−array_point :: TypeInfo
1298−array_point = Array {
1299− typoid = array_pointOid,
1300− typcategory = 'A',
1301− typdelim = ',',
1302− typname = "_point",
1303− typelem = point
1304− }
1305−
1306−array_pointOid :: Oid
1307−array_pointOid = Oid 1017
1308−{-# INLINE array_pointOid #-}
1309−
1310−array_lseg :: TypeInfo
1311−array_lseg = Array {
1312− typoid = array_lsegOid,
1313− typcategory = 'A',
1314− typdelim = ',',
1315− typname = "_lseg",
1316− typelem = lseg
1317− }
1318−
1319−array_lsegOid :: Oid
1320−array_lsegOid = Oid 1018
1321−{-# INLINE array_lsegOid #-}
1322−
1323−array_path :: TypeInfo
1324−array_path = Array {
1325− typoid = array_pathOid,
1326− typcategory = 'A',
1327− typdelim = ',',
1328− typname = "_path",
1329− typelem = path
1330− }
1331−
1332−array_pathOid :: Oid
1333−array_pathOid = Oid 1019
1334−{-# INLINE array_pathOid #-}
1335−
1336−array_box :: TypeInfo
1337−array_box = Array {
1338− typoid = array_boxOid,
1339− typcategory = 'A',
1340− typdelim = ';',
1341− typname = "_box",
1342− typelem = box
1343− }
1344−
1345−array_boxOid :: Oid
1346−array_boxOid = Oid 1020
1347−{-# INLINE array_boxOid #-}
1348−
1349−array_float4 :: TypeInfo
1350−array_float4 = Array {
1351− typoid = array_float4Oid,
1352− typcategory = 'A',
1353− typdelim = ',',
1354− typname = "_float4",
1355− typelem = float4
1356− }
1357−
1358−array_float4Oid :: Oid
1359−array_float4Oid = Oid 1021
1360−{-# INLINE array_float4Oid #-}
1361−
1362−array_float8 :: TypeInfo
1363−array_float8 = Array {
1364− typoid = array_float8Oid,
1365− typcategory = 'A',
1366− typdelim = ',',
1367− typname = "_float8",
1368− typelem = float8
1369− }
1370−
1371−array_float8Oid :: Oid
1372−array_float8Oid = Oid 1022
1373−{-# INLINE array_float8Oid #-}
1374−
1375−array_polygon :: TypeInfo
1376−array_polygon = Array {
1377− typoid = array_polygonOid,
1378− typcategory = 'A',
1379− typdelim = ',',
1380− typname = "_polygon",
1381− typelem = polygon
1382− }
1383−
1384−array_polygonOid :: Oid
1385−array_polygonOid = Oid 1027
1386−{-# INLINE array_polygonOid #-}
1387−
1388−array_oid :: TypeInfo
1389−array_oid = Array {
1390− typoid = array_oidOid,
1391− typcategory = 'A',
1392− typdelim = ',',
1393− typname = "_oid",
1394− typelem = oid
1395− }
1396−
1397−array_oidOid :: Oid
1398−array_oidOid = Oid 1028
1399−{-# INLINE array_oidOid #-}
1400−
1401−array_macaddr :: TypeInfo
1402−array_macaddr = Array {
1403− typoid = array_macaddrOid,
1404− typcategory = 'A',
1405− typdelim = ',',
1406− typname = "_macaddr",
1407− typelem = macaddr
1408− }
1409−
1410−array_macaddrOid :: Oid
1411−array_macaddrOid = Oid 1040
1412−{-# INLINE array_macaddrOid #-}
1413−
1414−array_inet :: TypeInfo
1415−array_inet = Array {
1416− typoid = array_inetOid,
1417− typcategory = 'A',
1418− typdelim = ',',
1419− typname = "_inet",
1420− typelem = inet
1421− }
1422−
1423−array_inetOid :: Oid
1424−array_inetOid = Oid 1041
1425−{-# INLINE array_inetOid #-}
1426−
1427−array_timestamp :: TypeInfo
1428−array_timestamp = Array {
1429− typoid = array_timestampOid,
1430− typcategory = 'A',
1431− typdelim = ',',
1432− typname = "_timestamp",
1433− typelem = timestamp
1434− }
1435−
1436−array_timestampOid :: Oid
1437−array_timestampOid = Oid 1115
1438−{-# INLINE array_timestampOid #-}
1439−
1440−array_date :: TypeInfo
1441−array_date = Array {
1442− typoid = array_dateOid,
1443− typcategory = 'A',
1444− typdelim = ',',
1445− typname = "_date",
1446− typelem = date
1447− }
1448−
1449−array_dateOid :: Oid
1450−array_dateOid = Oid 1182
1451−{-# INLINE array_dateOid #-}
1452−
1453−array_time :: TypeInfo
1454−array_time = Array {
1455− typoid = array_timeOid,
1456− typcategory = 'A',
1457− typdelim = ',',
1458− typname = "_time",
1459− typelem = time
1460− }
1461−
1462−array_timeOid :: Oid
1463−array_timeOid = Oid 1183
1464−{-# INLINE array_timeOid #-}
1465−
1466−array_timestamptz :: TypeInfo
1467−array_timestamptz = Array {
1468− typoid = array_timestamptzOid,
1469− typcategory = 'A',
1470− typdelim = ',',
1471− typname = "_timestamptz",
1472− typelem = timestamptz
1473− }
1474−
1475−array_timestamptzOid :: Oid
1476−array_timestamptzOid = Oid 1185
1477−{-# INLINE array_timestamptzOid #-}
1478−
1479−array_interval :: TypeInfo
1480−array_interval = Array {
1481− typoid = array_intervalOid,
1482− typcategory = 'A',
1483− typdelim = ',',
1484− typname = "_interval",
1485− typelem = interval
1486− }
1487−
1488−array_intervalOid :: Oid
1489−array_intervalOid = Oid 1187
1490−{-# INLINE array_intervalOid #-}
1491−
1492−array_numeric :: TypeInfo
1493−array_numeric = Array {
1494− typoid = array_numericOid,
1495− typcategory = 'A',
1496− typdelim = ',',
1497− typname = "_numeric",
1498− typelem = numeric
1499− }
1500−
1501−array_numericOid :: Oid
1502−array_numericOid = Oid 1231
1503−{-# INLINE array_numericOid #-}
1504−
1505−array_timetz :: TypeInfo
1506−array_timetz = Array {
1507− typoid = array_timetzOid,
1508− typcategory = 'A',
1509− typdelim = ',',
1510− typname = "_timetz",
1511− typelem = timetz
1512− }
1513−
1514−array_timetzOid :: Oid
1515−array_timetzOid = Oid 1270
1516−{-# INLINE array_timetzOid #-}
1517−
1518−array_bit :: TypeInfo
1519−array_bit = Array {
1520− typoid = array_bitOid,
1521− typcategory = 'A',
1522− typdelim = ',',
1523− typname = "_bit",
1524− typelem = bit
1525− }
1526−
1527−array_bitOid :: Oid
1528−array_bitOid = Oid 1561
1529−{-# INLINE array_bitOid #-}
1530−
1531−array_varbit :: TypeInfo
1532−array_varbit = Array {
1533− typoid = array_varbitOid,
1534− typcategory = 'A',
1535− typdelim = ',',
1536− typname = "_varbit",
1537− typelem = varbit
1538− }
1539−
1540−array_varbitOid :: Oid
1541−array_varbitOid = Oid 1563
1542−{-# INLINE array_varbitOid #-}
1543−
1544−array_refcursor :: TypeInfo
1545−array_refcursor = Array {
1546− typoid = array_refcursorOid,
1547− typcategory = 'A',
1548− typdelim = ',',
1549− typname = "_refcursor",
1550− typelem = refcursor
1551− }
1552−
1553−array_refcursorOid :: Oid
1554−array_refcursorOid = Oid 2201
1555−{-# INLINE array_refcursorOid #-}
1556−
1557−array_regprocedure :: TypeInfo
1558−array_regprocedure = Array {
1559− typoid = array_regprocedureOid,
1560− typcategory = 'A',
1561− typdelim = ',',
1562− typname = "_regprocedure",
1563− typelem = regprocedure
1564− }
1565−
1566−array_regprocedureOid :: Oid
1567−array_regprocedureOid = Oid 2207
1568−{-# INLINE array_regprocedureOid #-}
1569−
1570−array_regoper :: TypeInfo
1571−array_regoper = Array {
1572− typoid = array_regoperOid,
1573− typcategory = 'A',
1574− typdelim = ',',
1575− typname = "_regoper",
1576− typelem = regoper
1577− }
1578−
1579−array_regoperOid :: Oid
1580−array_regoperOid = Oid 2208
1581−{-# INLINE array_regoperOid #-}
1582−
1583−array_regoperator :: TypeInfo
1584−array_regoperator = Array {
1585− typoid = array_regoperatorOid,
1586− typcategory = 'A',
1587− typdelim = ',',
1588− typname = "_regoperator",
1589− typelem = regoperator
1590− }
1591−
1592−array_regoperatorOid :: Oid
1593−array_regoperatorOid = Oid 2209
1594−{-# INLINE array_regoperatorOid #-}
1595−
1596−array_regclass :: TypeInfo
1597−array_regclass = Array {
1598− typoid = array_regclassOid,
1599− typcategory = 'A',
1600− typdelim = ',',
1601− typname = "_regclass",
1602− typelem = regclass
1603− }
1604−
1605−array_regclassOid :: Oid
1606−array_regclassOid = Oid 2210
1607−{-# INLINE array_regclassOid #-}
1608−
1609−array_regtype :: TypeInfo
1610−array_regtype = Array {
1611− typoid = array_regtypeOid,
1612− typcategory = 'A',
1613− typdelim = ',',
1614− typname = "_regtype",
1615− typelem = regtype
1616− }
1617−
1618−array_regtypeOid :: Oid
1619−array_regtypeOid = Oid 2211
1620−{-# INLINE array_regtypeOid #-}
1621−
1622−array_uuid :: TypeInfo
1623−array_uuid = Array {
1624− typoid = array_uuidOid,
1625− typcategory = 'A',
1626− typdelim = ',',
1627− typname = "_uuid",
1628− typelem = uuid
1629− }
1630−
1631−array_uuidOid :: Oid
1632−array_uuidOid = Oid 2951
1633−{-# INLINE array_uuidOid #-}
1634−
1635−array_jsonb :: TypeInfo
1636−array_jsonb = Array {
1637− typoid = array_jsonbOid,
1638− typcategory = 'A',
1639− typdelim = ',',
1640− typname = "_jsonb",
1641− typelem = jsonb
1642− }
1643−
1644−array_jsonbOid :: Oid
1645−array_jsonbOid = Oid 3807
1646−{-# INLINE array_jsonbOid #-}
1647−
1648−int4range :: TypeInfo
1649−int4range = Range {
1650− typoid = int4rangeOid,
1651− typcategory = 'R',
1652− typdelim = ',',
1653− typname = "int4range",
1654− rngsubtype = int4
1655− }
1656−
1657−int4rangeOid :: Oid
1658−int4rangeOid = Oid 3904
1659−{-# INLINE int4rangeOid #-}
1660−
1661−_int4range :: TypeInfo
1662−_int4range = Array {
1663− typoid = _int4rangeOid,
1664− typcategory = 'A',
1665− typdelim = ',',
1666− typname = "_int4range",
1667− typelem = int4range
1668− }
1669−
1670−_int4rangeOid :: Oid
1671−_int4rangeOid = Oid 3905
1672−{-# INLINE _int4rangeOid #-}
1673−
1674−numrange :: TypeInfo
1675−numrange = Range {
1676− typoid = numrangeOid,
1677− typcategory = 'R',
1678− typdelim = ',',
1679− typname = "numrange",
1680− rngsubtype = numeric
1681− }
1682−
1683−numrangeOid :: Oid
1684−numrangeOid = Oid 3906
1685−{-# INLINE numrangeOid #-}
1686−
1687−_numrange :: TypeInfo
1688−_numrange = Array {
1689− typoid = _numrangeOid,
1690− typcategory = 'A',
1691− typdelim = ',',
1692− typname = "_numrange",
1693− typelem = numrange
1694− }
1695−
1696−_numrangeOid :: Oid
1697−_numrangeOid = Oid 3907
1698−{-# INLINE _numrangeOid #-}
1699−
1700−tsrange :: TypeInfo
1701−tsrange = Range {
1702− typoid = tsrangeOid,
1703− typcategory = 'R',
1704− typdelim = ',',
1705− typname = "tsrange",
1706− rngsubtype = timestamp
1707− }
1708−
1709−tsrangeOid :: Oid
1710−tsrangeOid = Oid 3908
1711−{-# INLINE tsrangeOid #-}
1712−
1713−_tsrange :: TypeInfo
1714−_tsrange = Array {
1715− typoid = _tsrangeOid,
1716− typcategory = 'A',
1717− typdelim = ',',
1718− typname = "_tsrange",
1719− typelem = tsrange
1720− }
1721−
1722−_tsrangeOid :: Oid
1723−_tsrangeOid = Oid 3909
1724−{-# INLINE _tsrangeOid #-}
1725−
1726−tstzrange :: TypeInfo
1727−tstzrange = Range {
1728− typoid = tstzrangeOid,
1729− typcategory = 'R',
1730− typdelim = ',',
1731− typname = "tstzrange",
1732− rngsubtype = timestamptz
1733− }
1734−
1735−tstzrangeOid :: Oid
1736−tstzrangeOid = Oid 3910
1737−{-# INLINE tstzrangeOid #-}
1738−
1739−_tstzrange :: TypeInfo
1740−_tstzrange = Array {
1741− typoid = _tstzrangeOid,
1742− typcategory = 'A',
1743− typdelim = ',',
1744− typname = "_tstzrange",
1745− typelem = tstzrange
1746− }
1747−
1748−_tstzrangeOid :: Oid
1749−_tstzrangeOid = Oid 3911
1750−{-# INLINE _tstzrangeOid #-}
1751−
1752−daterange :: TypeInfo
1753−daterange = Range {
1754− typoid = daterangeOid,
1755− typcategory = 'R',
1756− typdelim = ',',
1757− typname = "daterange",
1758− rngsubtype = date
1759− }
1760−
1761−daterangeOid :: Oid
1762−daterangeOid = Oid 3912
1763−{-# INLINE daterangeOid #-}
1764−
1765−_daterange :: TypeInfo
1766−_daterange = Array {
1767− typoid = _daterangeOid,
1768− typcategory = 'A',
1769− typdelim = ',',
1770− typname = "_daterange",
1771− typelem = daterange
1772− }
1773−
1774−_daterangeOid :: Oid
1775−_daterangeOid = Oid 3913
1776−{-# INLINE _daterangeOid #-}
1777−
1778−int8range :: TypeInfo
1779−int8range = Range {
1780− typoid = int8rangeOid,
1781− typcategory = 'R',
1782− typdelim = ',',
1783− typname = "int8range",
1784− rngsubtype = int8
1785− }
1786−
1787−int8rangeOid :: Oid
1788−int8rangeOid = Oid 3926
1789−{-# INLINE int8rangeOid #-}
1790−
1791−_int8range :: TypeInfo
1792−_int8range = Array {
1793− typoid = _int8rangeOid,
1794− typcategory = 'A',
1795− typdelim = ',',
1796− typname = "_int8range",
1797− typelem = int8range
1798− }
1799−
1800−_int8rangeOid :: Oid
1801−_int8rangeOid = Oid 3927
1802−{-# INLINE _int8rangeOid #-}
src/Database/PostgreSQL/Simple/TypeInfo/Types.hsdeleted−56
@@ -1,56 +0,0 @@
1−------------------------------------------------------------------------------
2−-- |
3−-- Module: Database.PostgreSQL.Simple.TypeInfo.Types
4−-- Copyright: (c) 2013 Leon P Smith
5−-- License: BSD3
6−-- Maintainer: Leon P Smith <leon@melding-monads.com>
7−-- Stability: experimental
8−--
9−------------------------------------------------------------------------------
10−
11−module Database.PostgreSQL.Simple.TypeInfo.Types where
12−
13−import Data.ByteString(ByteString)
14−import Database.PostgreSQL.LibPQ(Oid)
15−import Data.Vector(Vector)
16−
17−-- | A structure representing some of the metadata regarding a PostgreSQL
18−-- type, mostly taken from the @pg_type@ table.
19−
20−data TypeInfo
21−
22− = Basic { typoid :: {-# UNPACK #-} !Oid
23− , typcategory :: {-# UNPACK #-} !Char
24− , typdelim :: {-# UNPACK #-} !Char
25− , typname :: !ByteString
26− }
27−
28− | Array { typoid :: {-# UNPACK #-} !Oid
29− , typcategory :: {-# UNPACK #-} !Char
30− , typdelim :: {-# UNPACK #-} !Char
31− , typname :: !ByteString
32− , typelem :: !TypeInfo
33− }
34−
35− | Range { typoid :: {-# UNPACK #-} !Oid
36− , typcategory :: {-# UNPACK #-} !Char
37− , typdelim :: {-# UNPACK #-} !Char
38− , typname :: !ByteString
39− , rngsubtype :: !TypeInfo
40− }
41−
42− | Composite { typoid :: {-# UNPACK #-} !Oid
43− , typcategory :: {-# UNPACK #-} !Char
44− , typdelim :: {-# UNPACK #-} !Char
45− , typname :: !ByteString
46− , typrelid :: {-# UNPACK #-} !Oid
47− , attributes :: !(Vector Attribute)
48− }
49−
50− deriving (Show)
51−
52−data Attribute
53− = Attribute { attname :: !ByteString
54− , atttype :: !TypeInfo
55− }
56− deriving (Show)
src/Database/PostgreSQL/Simple/Types.hs+35−161
@@ -1,13 +1,14 @@
1−{-# LANGUAGE CPP, DeriveDataTypeable, DeriveFunctor, GeneralizedNewtypeDeriving #-}
1+{-# LANGUAGE DeriveDataTypeable, DeriveFunctor, GeneralizedNewtypeDeriving #-}
22
33------------------------------------------------------------------------------
44-- |
55-- Module: Database.PostgreSQL.Simple.Types
66-- Copyright: (c) 2011 MailRank, Inc.
7−-- (c) 2011-2012 Leon P Smith
7+-- (c) 2011 Leon P Smith
88-- License: BSD3
99-- Maintainer: Leon P Smith <leon@melding-monads.com>
1010-- Stability: experimental
11+-- Portability: portable
1112--
1213-- Basic types.
1314--
@@ -16,43 +17,31 @@
1617module Database.PostgreSQL.Simple.Types
1718 (
1819 Null(..)
19− , Default(..)
2020 , Only(..)
2121 , In(..)
2222 , Binary(..)
23− , Identifier(..)
24− , QualifiedIdentifier(..)
2523 , Query(..)
2624 , Oid(..)
2725 , (:.)(..)
28− , Savepoint(..)
29− , PGArray(..)
30− , Values(..)
3126 ) where
3227
33−import Control.Arrow (first)
34−import Data.ByteString (ByteString)
35−import Data.Hashable (Hashable(hashWithSalt))
36−import Data.Foldable (toList)
37−import Data.Monoid (Monoid(..))
38−import Data.Semigroup
39−import Data.String (IsString(..))
40−import Data.Typeable (Typeable)
41−import Data.ByteString.Builder ( stringUtf8 )
28+import Blaze.ByteString.Builder (toByteString)
29+import Control.Arrow (first)
30+import Data.ByteString (ByteString)
31+import Data.Monoid (Monoid(..))
32+import Data.String (IsString(..))
33+import Data.Typeable (Typeable)
34+import qualified Blaze.ByteString.Builder.Char.Utf8 as Utf8
4235import qualified Data.ByteString as B
43−import Data.Text (Text)
44−import qualified Data.Text as T
45−import Data.Tuple.Only (Only(..))
46−import Database.PostgreSQL.LibPQ (Oid(..))
47−import Database.PostgreSQL.Simple.Compat (toByteString)
36+import Database.PostgreSQL.LibPQ (Oid(..))
4837
4938-- | A placeholder for the SQL @NULL@ value.
5039data Null = Null
5140 deriving (Read, Show, Typeable)
5241
53−-- | A placeholder for the PostgreSQL @DEFAULT@ value.
54−data Default = Default
55− deriving (Read, Show, Typeable)
42+instance Eq Null where
43+ _ == _ = False
44+ _ /= _ = False
5645
5746-- | A query string. This type is intended to make it difficult to
5847-- construct a SQL query by concatenating string fragments, as that is
@@ -84,98 +73,42 @@ instance Read Query where
8473 readsPrec i = fmap (first Query) . readsPrec i
8574
8675instance IsString Query where
87− fromString = Query . toByteString . stringUtf8
88−
89−instance Semigroup Query where
90− Query a <> Query b = Query (B.append a b)
91− {-# INLINE (<>) #-}
92− sconcat xs = Query (B.concat $ map fromQuery $ toList xs)
76+ fromString = Query . toByteString . Utf8.fromString
9377
9478instance Monoid Query where
9579 mempty = Query B.empty
80+ mappend (Query a) (Query b) = Query (B.append a b)
81+ {-# INLINE mappend #-}
9682
97−-- | Wrap a list of values for use in an @IN@ clause. Replaces a
98−-- single \"@?@\" character with a parenthesized list of rendered
99−-- values.
100−--
101−-- Example:
102−--
103−-- > query c "select * from whatever where id in ?" (Only (In [3,4,5]))
104−--
105−-- Note that @In []@ expands to @(null)@, which works as expected in
106−-- the query above, but evaluates to the logical null value on every
107−-- row instead of @TRUE@. This means that changing the query above
108−-- to @... id NOT in ?@ and supplying the empty list as the parameter
109−-- returns zero rows, instead of all of them as one would expect.
110−--
111−-- Since postgresql doesn't seem to provide a syntax for actually specifying
112−-- an empty list, which could solve this completely, there are two
113−-- workarounds particularly worth mentioning, namely:
83+-- | A single-value \"collection\".
11484--
115−-- 1. Use postgresql-simple's 'Values' type instead, which can handle the
116−-- empty case correctly. Note however that while specifying the
117−-- postgresql type @"int4"@ is mandatory in the empty case, specifying
118−-- the haskell type @Values (Only Int)@ would not normally be needed in
119−-- realistic use cases.
85+-- This is useful if you need to supply a single parameter to a SQL
86+-- query, or extract a single column from a SQL result.
12087--
121−-- > query c "select * from whatever where id not in ?"
122−-- > (Only (Values ["int4"] [] :: Values (Only Int)))
88+-- Parameter example:
12389--
90+-- @query c \"select x from scores where x > ?\" ('Only' (42::Int))@
12491--
125−-- 2. Use sql's @COALESCE@ operator to turn a logical @null@ into the correct
126−-- boolean. Note however that the correct boolean depends on the use
127−-- case:
92+-- Result example:
12893--
129−-- > query c "select * from whatever where coalesce(id NOT in ?, TRUE)"
130−-- > (Only (In [] :: In [Int]))
94+-- @xs <- query_ c \"select id from users\"
95+--forM_ xs $ \\('Only' id) -> {- ... -}@
96+newtype Only a = Only {
97+ fromOnly :: a
98+ } deriving (Eq, Ord, Read, Show, Typeable, Functor)
99+
100+-- | Wrap a list of values for use in an @IN@ clause. Replaces a
101+-- single \"@?@\" character with a parenthesized list of rendered
102+-- values.
131103--
132−-- > query c "select * from whatever where coalesce(id IN ?, FALSE)"
133−-- > (Only (In [] :: In [Int]))
104+-- Example:
134105--
135−-- Note that at as of PostgreSQL 9.4, the query planner cannot see inside
136−-- the @COALESCE@ operator, so if you have an index on @id@ then you
137−-- probably don't want to write the last example with @COALESCE@, which
138−-- would result in a table scan. There are further caveats if @id@ can
139−-- be null or you want null treated sensibly as a component of @IN@ or
140−-- @NOT IN@.
141−
106+-- > query c "select * from whatever where id in ?" (In [3,4,5])
142107newtype In a = In a
143108 deriving (Eq, Ord, Read, Show, Typeable, Functor)
144109
145110-- | Wrap binary data for use as a @bytea@ value.
146−newtype Binary a = Binary {fromBinary :: a}
147− deriving (Eq, Ord, Read, Show, Typeable, Functor)
148−
149−-- | Wrap text for use as sql identifier, i.e. a table or column name.
150−newtype Identifier = Identifier {fromIdentifier :: Text}
151− deriving (Eq, Ord, Read, Show, Typeable, IsString)
152−
153−instance Hashable Identifier where
154− hashWithSalt i (Identifier t) = hashWithSalt i t
155−
156−-- | Wrap text for use as (maybe) qualified identifier, i.e. a table
157−-- with schema, or column with table.
158−data QualifiedIdentifier = QualifiedIdentifier (Maybe Text) Text
159− deriving (Eq, Ord, Read, Show, Typeable)
160−
161−instance Hashable QualifiedIdentifier where
162− hashWithSalt i (QualifiedIdentifier q t) = hashWithSalt i (q, t)
163−
164−-- | @\"foo.bar\"@ will get turned into
165−-- @QualifiedIdentifier (Just \"foo\") \"bar\"@, while @\"foo\"@ will get
166−-- turned into @QualifiedIdentifier Nothing \"foo\"@. Note this instance
167−-- is for convenience, and does not match postgres syntax. It
168−-- only examines the first period character, and thus cannot be used if the
169−-- qualifying identifier contains a period for example.
170−
171−instance IsString QualifiedIdentifier where
172− fromString str = let (x,y) = T.break (== '.') (fromString str)
173− in if T.null y
174− then QualifiedIdentifier Nothing x
175− else QualifiedIdentifier (Just x) (T.tail y)
176−
177−-- | Wrap a list for use as a PostgreSQL array.
178−newtype PGArray a = PGArray {fromPGArray :: [a]}
111+newtype Binary a = Binary a
179112 deriving (Eq, Ord, Read, Show, Typeable, Functor)
180113
181114-- | A composite type to parse your custom data structures without
@@ -197,62 +130,3 @@ newtype PGArray a = PGArray {fromPGArray :: [a]}
197130data h :. t = h :. t deriving (Eq,Ord,Show,Read,Typeable)
198131
199132infixr 3 :.
200−
201−newtype Savepoint = Savepoint Query
202− deriving (Eq, Ord, Show, Read, Typeable)
203−
204−-- | Represents a @VALUES@ table literal, usable as an alternative to
205−-- 'Database.PostgreSQL.Simple.executeMany' and
206−-- 'Database.PostgreSQL.Simple.returning'. The main advantage is that
207−-- you can parametrize more than just a single @VALUES@ expression.
208−-- For example, here's a query to insert a thing into one table
209−-- and some attributes of that thing into another, returning the
210−-- new id generated by the database:
211−--
212−--
213−-- > query c [sql|
214−-- > WITH new_thing AS (
215−-- > INSERT INTO thing (name) VALUES (?) RETURNING id
216−-- > ), new_attributes AS (
217−-- > INSERT INTO thing_attributes
218−-- > SELECT new_thing.id, attrs.*
219−-- > FROM new_thing JOIN ? attrs ON TRUE
220−-- > ) SELECT * FROM new_thing
221−-- > |] ("foo", Values [ "int4", "text" ]
222−-- > [ ( 1 , "hello" )
223−-- > , ( 2 , "world" ) ])
224−--
225−-- (Note this example uses writable common table expressions,
226−-- which were added in PostgreSQL 9.1)
227−--
228−-- The second parameter gets expanded into the following SQL syntax:
229−--
230−-- > (VALUES (1::"int4",'hello'::"text"),(2,'world'))
231−--
232−-- When the list of attributes is empty, the second parameter expands to:
233−--
234−-- > (VALUES (null::"int4",null::"text") LIMIT 0)
235−--
236−-- By contrast, @executeMany@ and @returning@ don't issue the query
237−-- in the empty case, and simply return @0@ and @[]@ respectively.
238−-- This behavior is usually correct given their intended use cases,
239−-- but would certainly be wrong in the example above.
240−--
241−-- The first argument is a list of postgresql type names. Because this
242−-- is turned into a properly quoted identifier, the type name is case
243−-- sensitive and must be as it appears in the @pg_type@ table. Thus,
244−-- you must write @timestamptz@ instead of @timestamp with time zone@,
245−-- @int4@ instead of @integer@ or @serial@, @_int8@ instead of @bigint[]@,
246−-- etcetera.
247−--
248−-- You may omit the type names, however, if you do so the list
249−-- of values must be non-empty, and postgresql must be able to infer
250−-- the types of the columns from the surrounding context. If the first
251−-- condition is not met, postgresql-simple will throw an exception
252−-- without issuing the query. In the second case, the postgres server
253−-- will return an error which will be turned into a @SqlError@ exception.
254−--
255−-- See <https://www.postgresql.org/docs/9.5/static/sql-values.html> for
256−-- more information.
257−data Values a = Values [QualifiedIdentifier] [a]
258− deriving (Eq, Ord, Show, Read, Typeable)
src/Database/PostgreSQL/Simple/Vector.hsdeleted−45
@@ -1,45 +0,0 @@
1−-- | 'query' variants returning 'V.Vector'.
2−module Database.PostgreSQL.Simple.Vector where
3−
4−import Database.PostgreSQL.Simple (Connection, formatQuery, formatMany)
5−import Database.PostgreSQL.Simple.FromRow (FromRow(..))
6−import Database.PostgreSQL.Simple.ToRow (ToRow(..))
7−import Database.PostgreSQL.Simple.Internal (RowParser, exec)
8−import Database.PostgreSQL.Simple.Internal.PQResultUtils
9−import Database.PostgreSQL.Simple.Types ( Query (..) )
10−
11−import qualified Data.Vector as V
12−
13−-- | Perform a @SELECT@ or other SQL query that is expected to return
14−-- results. All results are retrieved and converted before this
15−-- function returns.
16−query :: (ToRow q, FromRow r) => Connection -> Query -> q -> IO (V.Vector r)
17−query = queryWith fromRow
18−
19−-- | A version of 'query' that does not perform query substitution.
20−query_ :: (FromRow r) => Connection -> Query -> IO (V.Vector r)
21−query_ = queryWith_ fromRow
22−
23−-- | A version of 'query' taking parser as argument
24−queryWith :: ToRow q => RowParser r -> Connection -> Query -> q -> IO (V.Vector r)
25−queryWith parser conn template qs = do
26− result <- exec conn =<< formatQuery conn template qs
27− finishQueryWithV parser conn template result
28−
29−-- | A version of 'query_' taking parser as argument
30−queryWith_ :: RowParser r -> Connection -> Query -> IO (V.Vector r)
31−queryWith_ parser conn q@(Query que) = do
32− result <- exec conn que
33− finishQueryWithV parser conn q result
34−
35−-- | Execute @INSERT ... RETURNING@, @UPDATE ... RETURNING@, or other SQL
36−-- query that accepts multi-row input and is expected to return results.
37−returning :: (ToRow q, FromRow r) => Connection -> Query -> [q] -> IO (V.Vector r)
38−returning = returningWith fromRow
39−
40−-- | A version of 'returning' taking parser as argument
41−returningWith :: (ToRow q) => RowParser r -> Connection -> Query -> [q] -> IO (V.Vector r)
42−returningWith _ _ _ [] = return V.empty
43−returningWith parser conn q qs = do
44− result <- exec conn =<< formatMany conn q qs
45− finishQueryWithV parser conn q result
src/Database/PostgreSQL/Simple/Vector/Unboxed.hsdeleted−44
@@ -1,44 +0,0 @@
1−module Database.PostgreSQL.Simple.Vector.Unboxed where
2−
3−import Database.PostgreSQL.Simple (Connection, formatQuery, formatMany)
4−import Database.PostgreSQL.Simple.FromRow (FromRow(..))
5−import Database.PostgreSQL.Simple.ToRow (ToRow(..))
6−import Database.PostgreSQL.Simple.Internal (RowParser, exec)
7−import Database.PostgreSQL.Simple.Internal.PQResultUtils
8−import Database.PostgreSQL.Simple.Types ( Query (..) )
9−
10−import qualified Data.Vector.Unboxed as VU
11−
12−-- | Perform a @SELECT@ or other SQL query that is expected to return
13−-- results. All results are retrieved and converted before this
14−-- function returns.
15−query :: (ToRow q, FromRow r, VU.Unbox r) => Connection -> Query -> q -> IO (VU.Vector r)
16−query = queryWith fromRow
17−
18−-- | A version of 'query' that does not perform query substitution.
19−query_ :: (FromRow r, VU.Unbox r) => Connection -> Query -> IO (VU.Vector r)
20−query_ = queryWith_ fromRow
21−
22−-- | A version of 'query' taking parser as argument
23−queryWith :: (ToRow q, VU.Unbox r) => RowParser r -> Connection -> Query -> q -> IO (VU.Vector r)
24−queryWith parser conn template qs = do
25− result <- exec conn =<< formatQuery conn template qs
26− finishQueryWithVU parser conn template result
27−
28−-- | A version of 'query_' taking parser as argument
29−queryWith_ :: VU.Unbox r => RowParser r -> Connection -> Query -> IO (VU.Vector r)
30−queryWith_ parser conn q@(Query que) = do
31− result <- exec conn que
32− finishQueryWithVU parser conn q result
33−
34−-- | Execute @INSERT ... RETURNING@, @UPDATE ... RETURNING@, or other SQL
35−-- query that accepts multi-row input and is expected to return results.
36−returning :: (ToRow q, FromRow r, VU.Unbox r) => Connection -> Query -> [q] -> IO (VU.Vector r)
37−returning = returningWith fromRow
38−
39−-- | A version of 'returning' taking parser as argument
40−returningWith :: (ToRow q, VU.Unbox r) => RowParser r -> Connection -> Query -> [q] -> IO (VU.Vector r)
41−returningWith _ _ _ [] = return VU.empty
42−returningWith parser conn q qs = do
43− result <- exec conn =<< formatMany conn q qs
44− finishQueryWithVU parser conn q result
test/Bytea.hsnew file+26
@@ -0,0 +1,26 @@
1+{-# LANGUAGE OverloadedStrings #-}
2+module Bytea (testBytea) where
3+
4+import Common
5+import qualified Data.ByteString as B
6+
7+testBytea :: Connection -> Test
8+testBytea conn = TestList
9+ [ testStr "empty" []
10+ , testStr "\"hello\"" $ map (fromIntegral . fromEnum) ("hello" :: String)
11+ , testStr "ascending" [0..255]
12+ , testStr "descending" [255,254..0]
13+ , testStr "ascending, doubled up" $ doubleUp [0..255]
14+ , testStr "descending, doubled up" $ doubleUp [255,254..0]
15+ ]
16+ where
17+ testStr label bytes = TestLabel label $ TestCase $ do
18+ let bs = B.pack bytes
19+
20+ [Only h] <- query conn "SELECT md5(?::bytea)" [Binary bs]
21+ assertBool "Haskell -> SQL conversion altered the string" $ md5 bs == h
22+
23+ [Only (Binary r)] <- query conn "SELECT ?::bytea" [Binary bs]
24+ assertBool "SQL -> Haskell conversion altered the string" $ bs == r
25+
26+ doubleUp = concatMap (\x -> [x, x])
test/Common.hs+2−11
@@ -1,27 +1,18 @@
11module Common (
22 module Database.PostgreSQL.Simple,
3− module Test.Tasty.HUnit,
4− TestEnv(..),
3+ module Test.HUnit,
54 md5,
65) where
76
87import Data.ByteString (ByteString)
98import Data.Text (Text)
109import Database.PostgreSQL.Simple
11−import Test.Tasty.HUnit
10+import Test.HUnit
1211
1312import qualified Crypto.Hash.MD5 as MD5
1413import qualified Data.ByteString.Base16 as Base16
1514import qualified Data.Text.Encoding as TE
1615
17−data TestEnv
18− = TestEnv
19− { conn :: Connection
20− -- ^ Connection shared by all the tests
21− , withConn :: forall a. (Connection -> IO a) -> IO a
22− -- ^ Bracket for spawning additional connections
23− }
24−
2516-- | Return the MD5 hash of a 'ByteString', in lowercase hex format.
2617--
2718-- Example:
test/Exception.hsdeleted−70
@@ -1,70 +0,0 @@
1−{-# LANGUAGE CPP #-}
2−{-# LANGUAGE OverloadedStrings #-}
3−{-# LANGUAGE ScopedTypeVariables #-}
4−
5−module Exception (testExceptions) where
6−
7−import Database.PostgreSQL.Simple
8−import Test.Tasty.HUnit (Assertion, assertBool)
9−import Common (TestEnv)
10−import Control.Exception (Exception (..), SomeException)
11−import Data.Maybe (isJust)
12−import Data.Either (isLeft)
13−import Control.Exception (throwIO, try)
14−
15−testExceptions :: TestEnv -> Assertion
16−testExceptions _ = do
17− let sqlError = SqlError
18− { sqlState = ""
19− , sqlExecStatus = FatalError
20− , sqlErrorMsg = ""
21− , sqlErrorDetail = ""
22− , sqlErrorHint = ""
23− }
24− let sqlEx :: SomeException = toException sqlError
25− assertBool "SqlError is SomePostgreSqlException" $ isJust (fromException sqlEx :: Maybe SomePostgreSqlException)
26− assertBool "SqlError is SqlError" $ isJust (fromException sqlEx :: Maybe SqlError)
27− eSqlError :: Either SqlError () <- try $ throwIO sqlEx
28− assertBool "Can catch SqlError" $ isLeft eSqlError
29− eSqlPostgreSqlEx :: Either SomePostgreSqlException () <- try $ throwIO sqlEx
30− assertBool "Can catch SomePostgreSqlException from SqlError" $ isLeft eSqlPostgreSqlEx
31−
32− let formatError = FormatError
33− { fmtMessage = ""
34− , fmtQuery = ""
35− , fmtParams = []
36− }
37− let formatEx :: SomeException = toException formatError
38− assertBool "FormatError is SomePostgreSqlException" $ isJust (fromException formatEx :: Maybe SomePostgreSqlException)
39− assertBool "FormatError is FormatError" $ isJust (fromException formatEx :: Maybe FormatError)
40− eFormatError :: Either FormatError () <- try $ throwIO formatEx
41− assertBool "Can catch FormatError" $ isLeft eFormatError
42− eFormatPostreSqlEx :: Either SomePostgreSqlException () <- try $ throwIO formatEx
43− assertBool "Can catch SomePostgreSqlException from FormatError" $ isLeft eFormatPostreSqlEx
44−
45− let queryError = QueryError
46− { qeMessage = ""
47− , qeQuery = ""
48− }
49− let queryEx :: SomeException = toException queryError
50− assertBool "QueryError is SomePostgreSqlException" $ isJust (fromException queryEx :: Maybe SomePostgreSqlException)
51− assertBool "QueryError is QueryError" $ isJust (fromException queryEx :: Maybe QueryError)
52− eQueryError :: Either QueryError () <- try $ throwIO queryEx
53− assertBool "Can catch QueryError" $ isLeft eQueryError
54− eQueryPostgreSqlEx :: Either SomePostgreSqlException () <- try $ throwIO queryEx
55− assertBool "Can catch SomePostgreSqlException from QueryError" $ isLeft eQueryPostgreSqlEx
56−
57− let resultError = Incompatible
58− { errSQLType = ""
59− , errSQLTableOid = Nothing
60− , errSQLField = ""
61− , errHaskellType = ""
62− , errMessage = ""
63− }
64− let resultEx :: SomeException = toException resultError
65− assertBool "ResultError is SomePostgreSqlException" $ isJust (fromException resultEx :: Maybe SomePostgreSqlException)
66− assertBool "ResultError is ResultError" $ isJust (fromException resultEx :: Maybe ResultError)
67− eResultEx :: Either ResultError () <- try $ throwIO resultEx
68− assertBool "Can catch ResultError" $ isLeft eResultEx
69− eResultPostgreSqlEx :: Either SomePostgreSqlException () <- try $ throwIO resultEx
70− assertBool "Can catch SomePostgreSqlException from ResultError" $ isLeft eResultPostgreSqlEx
test/Inspection.hsdeleted−79
@@ -1,79 +0,0 @@
1−{-# LANGUAGE CPP #-}
2−{-# LANGUAGE TemplateHaskell #-}
3−{-# OPTIONS_GHC -dsuppress-idinfo -dsuppress-coercions -dsuppress-type-applications -dsuppress-module-prefixes -dsuppress-type-signatures #-}
4−-- {-# OPTIONS_GHC -dsuppress-uniques #-}
5−{-# OPTIONS_GHC -fplugin=Test.Inspection.Plugin #-}
6−module Main where
7−
8−import Test.Inspection
9−import Test.Tasty
10−import Test.Tasty.HUnit
11−
12−import qualified Database.PostgreSQL.LibPQ as PQ
13−import Database.PostgreSQL.Simple.FromField
14−import Database.PostgreSQL.Simple.TypeInfo as TI
15−import Database.PostgreSQL.Simple.TypeInfo.Macro
16−import qualified Database.PostgreSQL.Simple.TypeInfo.Static as TI
17−
18−-------------------------------------------------------------------------------
19−-- Inspection tests
20−-------------------------------------------------------------------------------
21−
22−-- # doesn't work :(
23−#define TH_MKCOMPATS3(a,b,c) $(mkCompats [TI.a,TI.b,TI.c])
24−#define IN_MKCOMPATS3(a,b,c) (eq TI.a \/ eq TI.b \/ eq TI.c)
25−
26−#define TH_INLINETYPOID(n) eq $(inlineTypoid TI.n)
27−#define IN_INLINETYPOID(n) eq TI.n
28−
29−-- eta-expansion is required
30−lhs01, rhs01 :: PQ.Oid -> Bool
31−lhs01 = TH_MKCOMPATS3(name,text,char)
32−rhs01 = IN_MKCOMPATS3(nameOid,textOid,charOid)
33−
34−lhs02, rhs02 :: PQ.Oid -> Bool
35−lhs02 = TH_INLINETYPOID(name)
36−rhs02 = IN_INLINETYPOID(nameOid)
37−
38−eq :: PQ.Oid -> PQ.Oid -> Bool
39−eq = (==)
40−{-# INLINE eq #-}
41−
42−infixr 2 \/
43−(\/) :: (PQ.Oid -> Bool)
44− -> (PQ.Oid -> Bool)
45− -> (PQ.Oid -> Bool)
46−f \/ g = \x -> f x || g x
47−{-# INLINE (\/) #-}
48−
49−inspectionTests :: TestTree
50−inspectionTests = testGroup "inspection"
51− [ testCase "mkCompats" $
52− assertSuccess $(inspectTest $ 'lhs01 === 'rhs01)
53−
54− -- byteaOid isn't inlined?
55− , testCase "inlineTypoid" $
56−#if __GLASGOW_HASKELL__ >= 808
57− assertSuccess
58−#else
59− assertFailure'
60−#endif
61− $(inspectTest $ 'lhs02 ==- 'rhs02)
62− ]
63−
64−assertSuccess :: Result -> IO ()
65−assertSuccess (Success _) = return ()
66−assertSuccess (Failure err) = assertFailure err
67−
68−assertFailure' :: Result -> IO ()
69−assertFailure' (Success err) = assertFailure err
70−assertFailure' (Failure _) = return ()
71−
72−-------------------------------------------------------------------------------
73−-- Main
74−-------------------------------------------------------------------------------
75−
76−main :: IO ()
77−main = defaultMain $ testGroup "tests"
78− [ inspectionTests
79− ]
test/Interval.hsdeleted−176
@@ -1,176 +0,0 @@
1−{-# LANGUAGE QuasiQuotes #-}
2−
3−{-
4−
5−Testing strategies:
6−
7−fromString . toString == id ** Todo?
8−
9−toString . fromString == almost id ** Todo?
10−
11−postgresql -> haskell -> postgresql * Done
12−
13−haskell -> postgresql -> haskell ** Todo?
14−
15−But still, what we really want to establish is that the two values
16−correspond; for example, a conversion that consistently added hour
17−when printed to a string and subtracted an hour when parsed from string
18−would still pass these tests.
19−
20−
21−Right now, we are checking that 1400+ timestamps in the range of 1860 to
22−2060 round trip from postgresql to haskell and back in 5 different timezones.
23−In addition to UTC, the four timezones were selected so that 2 have a positive
24−offset, and 2 have a negative offset, and that 2 have an offset of a
25−whole number of hours, while the other two do not.
26−
27−It may be worth adding a few more timezones to ensure better test coverage.
28−
29−We are checking a handful of selected timestamps to ensure we hit
30−various corner-cases in the code, in addition to 1400 timestamps randomly
31−generated with granularity of seconds down to microseconds in powers of ten.
32−
33−-}
34−
35−module Interval (testInterval) where
36−
37−import Common
38−import Control.Monad(forM_, replicateM_)
39−import Data.Time.Compat
40−import Data.Time.LocalTime.Compat (CalendarDiffTime(..))
41−import Data.ByteString(ByteString)
42−import Database.PostgreSQL.Simple.SqlQQ
43−
44−data IntervalTestCase = IntervalTestCase
45− { label :: String
46− , inputMonths :: Integer
47− , inputSeconds :: NominalDiffTime
48− , asText :: String
49− }
50− deriving (Eq, Show)
51−
52−testInterval :: TestEnv -> Assertion
53−testInterval env@TestEnv{..} = do
54−
55− initializeTable env
56−
57− let milliseconds = 0.001
58− seconds = 1
59− minutes = 60 * seconds
60− hours = 60 * minutes
61− days = 24 * hours
62− weeks = 7 * days
63− months = 1
64− years = 12 * months
65−
66− mapM (checkRoundTrip env)
67− [ IntervalTestCase
68− { label = "zero"
69− , inputMonths = 0
70− , inputSeconds = 0
71− , asText = "PT0"
72− }
73− , IntervalTestCase
74− { label = "1 year"
75− , inputMonths = 1 * years
76− , inputSeconds = 0
77− , asText = "P1Y"
78− }
79− , IntervalTestCase
80− { label = "2 months"
81− , inputMonths = 2 * months
82− , inputSeconds = 0
83− , asText = "P2M"
84− }
85− , IntervalTestCase
86− { label = "3 weeks"
87− , inputMonths = 0
88− , inputSeconds = 3 * weeks
89− , asText = "P3W"
90− }
91− , IntervalTestCase
92− { label = "4 days"
93− , inputMonths = 0
94− , inputSeconds = 4 * days
95− , asText = "P4D"
96− }
97− , IntervalTestCase
98− { label = "5 hours"
99− , inputMonths = 0
100− , inputSeconds = 5 * hours
101− , asText = "PT5H"
102− }
103− , IntervalTestCase
104− { label = "6 minutes"
105− , inputMonths = 0
106− , inputSeconds = 6 * minutes
107− , asText = "PT6M"
108− }
109− , IntervalTestCase
110− { label = "7 seconds"
111− , inputMonths = 0
112− , inputSeconds = 7 * seconds
113− , asText = "PT7S"
114− }
115− , IntervalTestCase
116− { label = "8 milliseconds"
117− , inputMonths = 0
118− , inputSeconds = 8 * milliseconds
119− , asText = "PT0.008S"
120− }
121− , IntervalTestCase
122− { label = "combination of intervals (day-size or bigger)"
123− , inputMonths = 2 * years + 4 * months
124− , inputSeconds = 3 * weeks + 5 * days
125− , asText = "P2Y4M3W5D"
126− }
127− , IntervalTestCase
128− { label = "combination of intervals (smaller than day-size)"
129− , inputMonths = 0
130− , inputSeconds = 18 * hours + 56 * minutes + 23 * seconds + 563 * milliseconds
131− , asText = "PT18H56M23.563S"
132− }
133− , IntervalTestCase
134− { label = "full combination of intervals"
135− , inputMonths = 2 * years + 4 * months
136− , inputSeconds = 3 * weeks + 5 * days + 18 * hours + 56 * minutes + 23 * seconds + 563 * milliseconds
137− , asText = "P2Y4M3W5DT18H56M23.563S"
138− }
139− ]
140−
141− return ()
142−
143−initializeTable :: TestEnv -> IO ()
144−initializeTable TestEnv{..} = withTransaction conn $ do
145− execute_ conn
146− [sql| CREATE TEMPORARY TABLE testinterval
147− ( id serial, sample interval, PRIMARY KEY(id) ) |]
148−
149− return ()
150−
151−checkRoundTrip :: TestEnv -> IntervalTestCase -> IO ()
152−checkRoundTrip TestEnv{..} IntervalTestCase{..} = do
153−
154− let input = CalendarDiffTime
155− { ctMonths = inputMonths
156− , ctTime = inputSeconds
157− }
158−
159− [(returnedId :: Int, output :: CalendarDiffTime)] <- query conn [sql|
160− INSERT INTO testinterval (sample)
161− VALUES (?)
162− RETURNING id, sample
163− |] (Only input)
164−
165− assertBool ("CalendarDiffTime did not round-trip from Haskell to SQL and back (" ++ label ++ ")") $
166− output == input
167−
168− [(Only isExpectedIso)] <- query conn [sql|
169− SELECT sample = (?)::interval
170− FROM testinterval
171− WHERE id = ?
172− |] (asText, returnedId)
173−
174− assertBool ("CalendarDiffTime inserted did not match ISO8601 equivalent \"" ++ asText ++ "\". (" ++ label ++ ")")
175− isExpectedIso
176−
test/Main.hs+24−637
@@ -1,648 +1,35 @@
1−{-# LANGUAGE CPP #-}
2−{-# LANGUAGE DeriveGeneric #-}
3−{-# LANGUAGE DeriveDataTypeable #-}
4−{-# LANGUAGE DoAndIfThenElse #-}
5−{-# LANGUAGE ScopedTypeVariables #-}
6−#if __GLASGOW_HASKELL__ >= 806
7−{-# LANGUAGE DerivingStrategies #-}
8−{-# LANGUAGE DerivingVia #-}
9−{-# LANGUAGE DeriveAnyClass #-}
10−#endif
11−module Main (main) where
1+{-# LANGUAGE OverloadedStrings #-}
2+{-# LANGUAGE NamedFieldPuns #-}
123
13−import Common
14−import Database.PostgreSQL.Simple.Copy
15−import Database.PostgreSQL.Simple.ToField (ToField)
16−import Database.PostgreSQL.Simple.FromField (FromField)
17−import Database.PostgreSQL.Simple.HStore
18−import Database.PostgreSQL.Simple.Newtypes
19−import Database.PostgreSQL.Simple.Internal (breakOnSingleQuestionMark)
20−import Database.PostgreSQL.Simple.Types(Query(..),Values(..), PGArray(..))
21−import qualified Database.PostgreSQL.Simple.Transaction as ST
4+import Control.Exception (bracket)
5+import Control.Monad (when)
6+import Database.PostgreSQL.Simple
7+import System.Exit (exitFailure)
8+import System.IO
9+import Test.HUnit
2210
23−import Control.Applicative
24−import Control.Exception as E
25−import Control.Monad
26−import Data.Char
27−import Data.Foldable (toList)
28−import Data.List (concat, sort)
29−import Data.IORef
30−import Data.Monoid ((<>))
31−import Data.String (fromString)
32−import Data.Typeable
33−import GHC.Generics (Generic)
34−
35−import Data.Aeson
36−import Data.ByteString (ByteString)
37−import qualified Data.ByteString as B
38−import qualified Data.ByteString.Char8 as BS8
39−import qualified Data.ByteString.Lazy.Char8 as BL
40−import Data.CaseInsensitive (CI)
41−import qualified Data.CaseInsensitive as CI
42−import Data.Map (Map)
43−import qualified Data.Map as Map
44−import Data.Text(Text)
45−import qualified Data.Text.Encoding as T
46−import qualified Data.Vector as V
47−import System.FilePath
48−import System.Timeout(timeout)
49−import Data.Time.Compat (getCurrentTime, diffUTCTime)
50−import System.Environment (getEnvironment)
51−
52−import Test.Tasty
53−import Test.Tasty.Golden
11+import Bytea
5412import Notify
55−import Serializable
56−import Time
57−import Interval
58−import Exception (testExceptions)
59−
60−tests :: TestEnv -> TestTree
61−tests env = testGroup "tests"
62− $ map ($ env)
63− [ testBytea
64− , testCase "ExecuteMany" . testExecuteMany
65− , testCase "Fold" . testFold
66− , testCase "Notify" . testNotify
67− , testCase "Serializable" . testSerializable
68− , testCase "Time" . testTime
69− , testCase "Interval" . testInterval
70− , testCase "Array" . testArray
71− , testCase "Array of nullables" . testNullableArray
72− , testCase "HStore" . testHStore
73− , testCase "citext" . testCIText
74− , testCase "JSON" . testJSON
75− , testCase "Aeson newtype" . testAeson
76− , testCase "DerivingVia" . testDerivingVia
77− , testCase "Question mark escape" . testQM
78− , testCase "Savepoint" . testSavepoint
79− , testCase "Unicode" . testUnicode
80− , testCase "Values" . testValues
81− , testCase "Copy" . testCopy
82− , testCopyFailures
83− , testCase "Double" . testDouble
84− , testCase "1-ary generic" . testGeneric1
85− , testCase "2-ary generic" . testGeneric2
86− , testCase "3-ary generic" . testGeneric3
87− , testCase "Timeout" . testTimeout
88− , testCase "Exceptions" . testExceptions
89− ]
90−
91−testBytea :: TestEnv -> TestTree
92−testBytea TestEnv{..} = testGroup "Bytea"
93− [ testStr "empty" []
94− , testStr "\"hello\"" $ map (fromIntegral . fromEnum) ("hello" :: String)
95− , testStr "ascending" [0..255]
96− , testStr "descending" [255,254..0]
97− , testStr "ascending, doubled up" $ doubleUp [0..255]
98− , testStr "descending, doubled up" $ doubleUp [255,254..0]
99− ]
100− where
101− testStr label bytes = testCase label $ do
102− let bs = B.pack bytes
103−
104− [Only h] <- query conn "SELECT md5(?::bytea)" [Binary bs]
105− assertBool "Haskell -> SQL conversion altered the string" $ md5 bs == h
106−
107− [Only (Binary r)] <- query conn "SELECT ?::bytea" [Binary bs]
108− assertBool "SQL -> Haskell conversion altered the string" $ bs == r
109−
110− doubleUp = concatMap (\x -> [x, x])
111−
112−testExecuteMany :: TestEnv -> Assertion
113−testExecuteMany TestEnv{..} = do
114− execute_ conn "CREATE TEMPORARY TABLE tmp_executeMany (i INT, t TEXT, b BYTEA)"
115−
116− let rows :: [(Int, String, Binary ByteString)]
117− rows = [ (1, "hello", Binary "bye")
118− , (2, "world", Binary "\0\r\t\n")
119− , (3, "?", Binary "")
120− ]
121−
122− count <- executeMany conn "INSERT INTO tmp_executeMany VALUES (?, ?, ?)" rows
123− count @?= fromIntegral (length rows)
124−
125− rows' <- query_ conn "SELECT * FROM tmp_executeMany"
126− rows' @?= rows
127−
128− return ()
129−
130−testFold :: TestEnv -> Assertion
131−testFold TestEnv{..} = do
132− xs <- fold_ conn "SELECT generate_series(1,10000)"
133− [] $ \xs (Only x) -> return (x:xs)
134− reverse xs @?= ([1..10000] :: [Int])
135−
136− ref <- newIORef []
137− forEach conn "SELECT * FROM generate_series(1,?) a, generate_series(1,?) b"
138− (100 :: Int, 50 :: Int) $ \(a :: Int, b :: Int) -> do
139− xs <- readIORef ref
140− writeIORef ref $! (a,b):xs
141− xs <- readIORef ref
142− reverse xs @?= [(a,b) | b <- [1..50], a <- [1..100]]
143−
144− -- Make sure fold propagates our exception.
145− ref <- newIORef []
146− True <- expectError (== TestException) $
147− forEach_ conn "SELECT generate_series(1,10)" $ \(Only a) ->
148− if a == 5 then do
149− -- Cause a SQL error to trip up CLOSE.
150− True <- expectError isSyntaxError $
151− execute_ conn "asdf"
152− True <- expectError ST.isFailedTransactionError $
153− (query_ conn "SELECT 1" :: IO [(Only Int)])
154− throwIO TestException
155− else do
156− xs <- readIORef ref
157− writeIORef ref $! (a :: Int) : xs
158− xs <- readIORef ref
159− reverse xs @?= [1..4]
160−
161− withTransaction conn $ replicateM_ 2 $ do
162− xs <- fold_ conn "VALUES (1), (2), (3), (4), (5)"
163− [] $ \xs (Only x) -> return (x:xs)
164− reverse xs @?= ([1..5] :: [Int])
165−
166− ref <- newIORef []
167− forEach_ conn "SELECT generate_series(1,101)" $ \(Only a) ->
168− forEach_ conn "SELECT generate_series(1,55)" $ \(Only b) -> do
169− xs <- readIORef ref
170− writeIORef ref $! (a :: Int, b :: Int) : xs
171− xs <- readIORef ref
172− reverse xs @?= [(a,b) | a <- [1..101], b <- [1..55]]
173−
174− xs <- fold_ conn "SELECT 1 WHERE FALSE"
175− [] $ \xs (Only x) -> return (x:xs)
176− xs @?= ([] :: [Int])
177−
178− -- TODO: add more complete tests, e.g.:
179− --
180− -- * Fold in a transaction
181− --
182− -- * Fold in a transaction after a previous fold has been performed
183− --
184− -- * Nested fold
185−
186− return ()
187−
188−queryFailure :: forall a. (FromField a, Typeable a, Show a)
189− => Connection -> Query -> a -> Assertion
190−queryFailure conn q resultType = do
191− x :: Either SomeException [Only a] <- E.try $ query_ conn q
192− case x of
193− Left _ -> return ()
194− Right val -> assertFailure ("Did not fail as expected: "
195− ++ show q
196− ++ " :: "
197− ++ show (typeOf resultType)
198− ++ " -> " ++ show val)
199−
200−testArray :: TestEnv -> Assertion
201−testArray TestEnv{..} = do
202− xs <- query_ conn "SELECT '{1,2,3,4}'::_int4"
203− xs @?= [Only (V.fromList [1,2,3,4 :: Int])]
204− xs <- query_ conn "SELECT '{{1,2},{3,4}}'::_int4"
205− xs @?= [Only (V.fromList [V.fromList [1,2],
206− V.fromList [3,4 :: Int]])]
207− queryFailure conn "SELECT '{1,2,3,4}'::_int4" (undefined :: V.Vector Bool)
208− queryFailure conn "SELECT '{{1,2},{3,4}}'::_int4" (undefined :: V.Vector Int)
209−
210−testNullableArray :: TestEnv -> Assertion
211−testNullableArray TestEnv{..} = do
212− xs <- query_ conn "SELECT '{sometext, \"NULL\"}'::_text"
213− xs @?= [Only (V.fromList ["sometext", "NULL" :: Text])]
214− xs <- query_ conn "SELECT '{sometext, NULL}'::_text"
215− xs @?= [Only (V.fromList [Just "sometext", Nothing :: Maybe Text])]
216− queryFailure conn "SELECT '{sometext, NULL}'::_text" (undefined :: V.Vector Text)
217−
218−testHStore :: TestEnv -> Assertion
219−testHStore TestEnv{..} = do
220− execute_ conn "CREATE EXTENSION IF NOT EXISTS hstore"
221− roundTrip []
222− roundTrip [("foo","bar"),("bar","baz"),("baz","hello")]
223− roundTrip [("fo\"o","bar"),("b\\ar","baz"),("baz","\"value\\with\"escapes")]
224− where
225− roundTrip :: [(Text,Text)] -> Assertion
226− roundTrip xs = do
227− let m = Only (HStoreMap (Map.fromList xs))
228− m' <- query conn "SELECT ?::hstore" m
229− [m] @?= m'
230−
231−testCIText :: TestEnv -> Assertion
232−testCIText TestEnv{..} = do
233− execute_ conn "CREATE EXTENSION IF NOT EXISTS citext"
234− roundTrip (CI.mk "")
235− roundTrip (CI.mk "UPPERCASE")
236− roundTrip (CI.mk "lowercase")
237− where
238− roundTrip :: (CI Text) -> Assertion
239− roundTrip cit = do
240− let toPostgres = Only cit
241− fromPostgres <- query conn "SELECT ?::citext" toPostgres
242− [toPostgres] @?= fromPostgres
243−
244−testJSON :: TestEnv -> Assertion
245−testJSON TestEnv{..} = do
246− roundTrip (Map.fromList [] :: Map Text Text)
247− roundTrip (Map.fromList [("foo","bar"),("bar","baz"),("baz","hello")] :: Map Text Text)
248− roundTrip (Map.fromList [("fo\"o","bar"),("b\\ar","baz"),("baz","\"value\\with\"escapes")] :: Map Text Text)
249− roundTrip (V.fromList [1,2,3,4,5::Int])
250− roundTrip ("foo" :: Text)
251− roundTrip (42 :: Int)
252− where
253− roundTrip :: ToJSON a => a -> Assertion
254− roundTrip a = do
255− let js = Only (toJSON a)
256− js' <- query conn "SELECT ?::json" js
257− [js] @?= js'
258−
259−testAeson :: TestEnv -> Assertion
260−testAeson TestEnv{..} = do
261− roundTrip (Map.fromList [] :: Map Text Text)
262− roundTrip (Map.fromList [("foo","bar"),("bar","baz"),("baz","hello")] :: Map Text Text)
263− roundTrip (Map.fromList [("fo\"o","bar"),("b\\ar","baz"),("baz","\"value\\with\"escapes")] :: Map Text Text)
264− roundTrip (V.fromList [1,2,3,4,5::Int])
265− roundTrip ("foo" :: Text)
266− roundTrip (42 :: Int)
267− where
268− roundTrip :: (Eq a, Show a, Typeable a, ToJSON a, FromJSON a)=> a -> Assertion
269− roundTrip x = do
270− y <- query conn "SELECT ?::json" (Only (Aeson x))
271− [Only (Aeson x)] @?= y
272−
273−testDerivingVia :: TestEnv -> Assertion
274−testDerivingVia TestEnv{..} = do
275−#if __GLASGOW_HASKELL__ <806
276− return ()
277−#else
278− roundTrip $ DerivingVia1 42 "Meaning of Life"
279− where
280− roundTrip :: (Eq a, Show a, Typeable a, ToField a, FromField a)=> a -> Assertion
281− roundTrip x = do
282− y <- query conn "SELECT ?::json" (Only x)
283− [Only x] @?= y
284−
285−data DerivingVia1 = DerivingVia1 Int String
286− deriving stock (Eq, Show, Generic)
287− deriving anyclass (FromJSON, ToJSON)
288− deriving (ToField, FromField) via Aeson DerivingVia1
289−
290−#endif
291−
292−
293−testQM :: TestEnv -> Assertion
294−testQM TestEnv{..} = do
295− -- Just test on a single string
296− let testQuery' b = "testing for ?" <> b <> " and making sure "
297− testQueryDoubleQM = testQuery' "?"
298− testQueryRest = "? is substituted"
299− testQuery = fromString $ testQueryDoubleQM <> testQueryRest
300− -- expect the entire first part with double QMs replaced with literal '?'
301− expected = (fromString $ testQuery' "", fromString testQueryRest)
302− tried = breakOnSingleQuestionMark testQuery
303− errMsg = concat
304− [ "Failed to break on single question mark exclusively:\n"
305− , "expected: ", show expected
306− , "result: ", show tried
307− ]
308− assertBool errMsg $ tried == expected
309−
310− -- Let's also test the question mark operators in action
311− -- ? -> Does the string exist as a top-level key within the JSON value?
312− positiveQuery "SELECT ?::jsonb ?? ?" (testObj, "foo" :: Text)
313− negativeQuery "SELECT ?::jsonb ?? ?" (testObj, "baz" :: Text)
314− negativeQuery "SELECT ?::jsonb ?? ?" (toJSON numArray, "1" :: Text)
315− -- ?| -> Do any of these array strings exist as top-level keys?
316− positiveQuery "SELECT ?::jsonb ??| ?" (testObj, PGArray ["nope","bar","6" :: Text])
317− negativeQuery "SELECT ?::jsonb ??| ?" (testObj, PGArray ["nope","6" :: Text])
318− negativeQuery "SELECT ?::jsonb ??| ?" (toJSON numArray, PGArray ["1","2","6" :: Text])
319− -- ?& -> Do all of these array strings exist as top-level keys?
320− positiveQuery "SELECT ?::jsonb ??& ?" (testObj, PGArray ["foo","bar","quux" :: Text])
321− positiveQuery "SELECT ?::jsonb ??& ?" (testObj, PGArray ["foo","bar" :: Text])
322− negativeQuery "SELECT ?::jsonb ??& ?" (testObj, PGArray ["foo","bar","baz" :: Text])
323− negativeQuery "SELECT ?::jsonb ??& ?" (toJSON numArray, PGArray ["1","2","3","4","5" :: Text])
324− -- Format error for 2 question marks, not 4
325− True <- expectError (isFormatError 2) $
326− (query conn "SELECT ?::jsonb ?? ?" $ Only testObj :: IO [Only Bool])
327− return ()
328− where positiveQuery :: ToRow a => Query -> a -> Assertion
329− positiveQuery = boolQuery True
330− negativeQuery :: ToRow a => Query -> a -> Assertion
331− negativeQuery = boolQuery False
332− numArray :: [Int]
333− numArray = [1,2,3,4,5]
334− boolQuery :: ToRow a => Bool -> Query -> a -> Assertion
335− boolQuery b t x = do
336− a <- query conn t x
337− [Only b] @?= a
338− testObj = toJSON (Map.fromList [("foo",toJSON (1 :: Int))
339− ,("bar",String "baz")
340− ,("quux",toJSON [1 :: Int,2,3,4,5])] :: Map Text Value
341− )
342−
343−testSavepoint :: TestEnv -> Assertion
344−testSavepoint TestEnv{..} = do
345− True <- expectError ST.isNoActiveTransactionError $
346− withSavepoint conn $ return ()
347−
348− let getRows :: IO [Int]
349− getRows = map fromOnly <$> query_ conn "SELECT a FROM tmp_savepoint ORDER BY a"
350− withTransaction conn $ do
351− execute_ conn "CREATE TEMPORARY TABLE tmp_savepoint (a INT UNIQUE)"
352− execute_ conn "INSERT INTO tmp_savepoint VALUES (1)"
353− [1] <- getRows
354−
355− withSavepoint conn $ do
356− execute_ conn "INSERT INTO tmp_savepoint VALUES (2)"
357− [1,2] <- getRows
358− return ()
359− [1,2] <- getRows
360−
361− withSavepoint conn $ do
362− execute_ conn "INSERT INTO tmp_savepoint VALUES (3)"
363− [1,2,3] <- getRows
364− True <- expectError isUniqueViolation $
365− execute_ conn "INSERT INTO tmp_savepoint VALUES (2)"
366− True <- expectError ST.isFailedTransactionError getRows
367−
368− -- Body returning successfully after handling error,
369− -- but 'withSavepoint' will roll back without complaining.
370− return ()
371− -- Rolling back clears the error condition.
372− [1,2] <- getRows
373−
374− -- 'withSavepoint' will roll back after an exception, even if the
375− -- exception wasn't SQL-related.
376− True <- expectError (== TestException) $
377− withSavepoint conn $ do
378− execute_ conn "INSERT INTO tmp_savepoint VALUES (3)"
379− [1,2,3] <- getRows
380− throwIO TestException
381− [1,2] <- getRows
382−
383− -- Nested savepoint can be rolled back while the
384− -- outer effects are retained.
385− withSavepoint conn $ do
386− execute_ conn "INSERT INTO tmp_savepoint VALUES (3)"
387− True <- expectError isUniqueViolation $
388− withSavepoint conn $ do
389− execute_ conn "INSERT INTO tmp_savepoint VALUES (4)"
390− [1,2,3,4] <- getRows
391− execute_ conn "INSERT INTO tmp_savepoint VALUES (4)"
392− [1,2,3] <- getRows
393− return ()
394− [1,2,3] <- getRows
395−
396− return ()
397−
398− -- Transaction committed successfully, even though there were errors
399− -- (but we rolled them back).
400− [1,2,3] <- getRows
401−
402− return ()
403−
404−testUnicode :: TestEnv -> Assertion
405−testUnicode TestEnv{..} = do
406− let q = Query . T.encodeUtf8 -- Handle encoding ourselves to ensure
407− -- the table gets created correctly.
408− let messages = map Only ["привет","мир"] :: [Only Text]
409− execute_ conn (q "CREATE TEMPORARY TABLE ру́сский (сообщение TEXT)")
410− executeMany conn "INSERT INTO ру́сский (сообщение) VALUES (?)" messages
411− messages' <- query_ conn "SELECT сообщение FROM ру́сский"
412− sort messages @?= sort messages'
413−
414−testValues :: TestEnv -> Assertion
415−testValues TestEnv{..} = do
416− execute_ conn "CREATE TEMPORARY TABLE values_test (x int, y text)"
417− test (Values ["int4","text"] [])
418− test (Values ["int4","text"] [(1,"hello")])
419− test (Values ["int4","text"] [(1,"hello"),(2,"world")])
420− test (Values ["int4","text"] [(1,"hello"),(2,"world"),(3,"goodbye")])
421− test (Values [] [(1,"hello")])
422− test (Values [] [(1,"hello"),(2,"world")])
423− test (Values [] [(1,"hello"),(2,"world"),(3,"goodbye")])
424− where
425− test :: Values (Int, Text) -> Assertion
426− test table@(Values _ vals) = do
427− execute conn "INSERT INTO values_test ?" (Only table)
428− vals' <- query_ conn "DELETE FROM values_test RETURNING *"
429− sort vals @?= sort vals'
430−
431−
432−testCopy :: TestEnv -> Assertion
433−testCopy TestEnv{..} = do
434− execute_ conn "CREATE TEMPORARY TABLE copy_test (x int, y text)"
435− copy_ conn "COPY copy_test FROM STDIN (FORMAT CSV)"
436− mapM_ (putCopyData conn) copyRows
437− putCopyEnd conn
438− copy_ conn "COPY copy_test FROM STDIN (FORMAT CSV)"
439− mapM_ (putCopyData conn) abortRows
440− putCopyError conn "aborted"
441− -- Hmm, does postgres always produce \n as an end-of-line here, or
442− -- are there cases where it will use a \r\n as well?
443− copy_ conn "COPY copy_test TO STDOUT (FORMAT CSV)"
444− rows <- loop []
445− sort rows @?= sort copyRows
446− -- Now, let's just verify that the connection state is back to ready,
447− -- so that we can issue more queries:
448− [Only (x::Int)] <- query_ conn "SELECT 2 + 2"
449− x @?= 4
450− -- foldCopyData
451− copy_ conn "COPY copy_test TO STDOUT (FORMAT CSV)"
452− (acc, count) <- foldCopyData conn
453− (\acc row -> return (row:acc))
454− (\acc count -> return (acc, count))
455− []
456− sort acc @?= sort copyRows
457− count @?= 2
458− where
459− copyRows = ["1,foo\n"
460− ,"2,bar\n"]
461− abortRows = ["3,baz\n"]
462− loop rows = do
463− mrow <- getCopyData conn
464− case mrow of
465− CopyOutDone _ -> return rows
466− CopyOutRow row -> loop (row:rows)
467−
468−testCopyFailures :: TestEnv -> TestTree
469−testCopyFailures env = testGroup "Copy failures"
470− $ map ($ env)
471− [ testCopyUniqueConstraintError
472− , testCopyMalformedError
473− ]
474−
475−goldenTest :: TestName -> IO BL.ByteString -> TestTree
476−goldenTest testName =
477− goldenVsStringDiff testName diff (resultsDir </> fileName<.>"expected")
478− where
479− resultsDir = "test" </> "results"
480− fileName = map normalize testName
481− normalize c | not (isAlpha c) = '-'
482− | otherwise = c
483− diff ref new = ["diff", "-u", ref, new]
484−
485−-- | Test that we provide a sensible error message on failure
486−testCopyUniqueConstraintError :: TestEnv -> TestTree
487−testCopyUniqueConstraintError TestEnv{..} =
488− goldenTest "unique constraint violation"
489− $ handle (\(SomeException exc) -> return $ BL.pack $ show exc) $ do
490− execute_ conn "CREATE TEMPORARY TABLE copy_unique_constraint_error_test (x int PRIMARY KEY, y text)"
491− copy_ conn "COPY copy_unique_constraint_error_test FROM STDIN (FORMAT CSV)"
492− mapM_ (putCopyData conn) copyRows
493− _n <- putCopyEnd conn
494− return BL.empty
495− where
496− copyRows = ["1,foo\n"
497− ,"2,bar\n"
498− ,"1,baz\n"]
499−
500−testCopyMalformedError :: TestEnv -> TestTree
501−testCopyMalformedError TestEnv{..} =
502− goldenTest "malformed input"
503− $ handle (\(SomeException exc) -> return $ BL.pack $ show exc) $ do
504− execute_ conn "CREATE TEMPORARY TABLE copy_malformed_input_error_test (x int PRIMARY KEY, y text)"
505− copy_ conn "COPY copy_unique_constraint_error_test FROM STDIN (FORMAT CSV)"
506− mapM_ (putCopyData conn) copyRows
507− _n <- putCopyEnd conn
508− return BL.empty
509− where
510− copyRows = ["1,foo\n"
511− ,"2,bar\n"
512− ,"z,baz\n"]
513−
514−testTimeout :: TestEnv -> Assertion
515−testTimeout TestEnv{..} =
516− withConn $ \c -> do
517− start_t <- getCurrentTime
518− res <- timeout 200000 $ do
519− withTransaction c $ do
520− query_ c "SELECT pg_sleep(1)" :: IO [Only ()]
521− end_t <- getCurrentTime
522− assertBool "Timeout did not occur" (res == Nothing)
523−#if !defined(mingw32_HOST_OS)
524−-- At the moment, you cannot timely abandon queries with async exceptions on
525−-- Windows.
526− let d = end_t `diffUTCTime` start_t
527− assertBool "Timeout didn't work in a timely fashion" (0.1 < d && d < 0.6)
528−#endif
529−
530−testDouble :: TestEnv -> Assertion
531−testDouble TestEnv{..} = do
532− [Only (x :: Double)] <- query_ conn "SELECT 'NaN'::float8"
533− assertBool "expected NaN" (isNaN x)
534− [Only (x :: Double)] <- query_ conn "SELECT 'Infinity'::float8"
535− x @?= (1 / 0)
536− [Only (x :: Double)] <- query_ conn "SELECT '-Infinity'::float8"
537− x @?= (-1 / 0)
538−
539−
540−testGeneric1 :: TestEnv -> Assertion
541−testGeneric1 TestEnv{..} = do
542− roundTrip conn (Gen1 123)
543− where
544− roundTrip conn x0 = do
545− r <- query conn "SELECT ?::int" (x0 :: Gen1)
546− r @?= [x0]
547−
548−testGeneric2 :: TestEnv -> Assertion
549−testGeneric2 TestEnv{..} = do
550− roundTrip conn (Gen2 123 "asdf")
551− where
552− roundTrip conn x0 = do
553− r <- query conn "SELECT ?::int, ?::text" x0
554− r @?= [x0]
555−
556−testGeneric3 :: TestEnv -> Assertion
557−testGeneric3 TestEnv{..} = do
558− roundTrip conn (Gen3 123 "asdf" True)
559− where
560− roundTrip conn x0 = do
561− r <- query conn "SELECT ?::int, ?::text, ?::bool" x0
562− r @?= [x0]
563−
564−data Gen1 = Gen1 Int
565− deriving (Show,Eq,Generic)
566−instance FromRow Gen1
567−instance ToRow Gen1
568−
569−data Gen2 = Gen2 Int Text
570− deriving (Show,Eq,Generic)
571−instance FromRow Gen2
572−instance ToRow Gen2
573−
574−data Gen3 = Gen3 Int Text Bool
575− deriving (Show,Eq,Generic)
576−instance FromRow Gen3
577−instance ToRow Gen3
578−
579−data TestException
580− = TestException
581− deriving (Eq, Show, Typeable)
582−
583−instance Exception TestException
584−
585−expectError :: Exception e => (e -> Bool) -> IO a -> IO Bool
586−expectError p io =
587− (io >> return False) `E.catch` \ex ->
588− if p ex then return True else throwIO ex
589−
590−isUniqueViolation :: SqlError -> Bool
591−isUniqueViolation SqlError{..} = sqlState == "23505"
592−
593−isSyntaxError :: SqlError -> Bool
594−isSyntaxError SqlError{..} = sqlState == "42601"
595−
596−isFormatError :: Int -> FormatError -> Bool
597−isFormatError i FormatError{..}
598− | null fmtMessage = False
599− | otherwise = fmtMessage == concat [ show i
600− , " single '?' characters, but "
601− , show (length fmtParams)
602− , " parameters"
603− ]
604−------------------------------------------------------------------------
60513
60614-- | Action for connecting to the database that will be used for testing.
60715--
60816-- Note that some tests, such as Notify, use multiple connections, and assume
60917-- that 'testConnect' connects to the same database every time it is called.
610−withTestEnv :: ByteString -> (TestEnv -> IO a) -> IO a
611−withTestEnv connstr cb =
612− withConn $ \conn -> do
613− -- currently required for interval to work.
614− -- we also test that this doesn't interfere with anything else
615− execute_ conn "SET intervalstyle TO 'iso_8601'"
18+testConnect :: IO Connection
19+testConnect = connectPostgreSQL ""
61620
617− cb TestEnv
618− { conn = conn
619− , withConn = withConn
620− }
621− where
622− withConn = bracket (connectPostgreSQL connstr) close
21+withConn :: (Connection -> IO a) -> IO a
22+withConn = bracket testConnect close
62323
624−main :: IO ()
625−main = withConnstring $ \connstring -> do
626− withTestEnv connstring (defaultMain . tests)
627−
628−withConnstring :: (BS8.ByteString -> IO ()) -> IO ()
629−withConnstring kont = do
630− env <- getEnvironment
631− case lookup "DATABASE_CONNSTRING" env of
632− Just s -> kont (BS8.pack (special s))
633− Nothing -> case lookup "GITHUB_ACTIONS" env of
634− Just "true" -> kont (BS8.pack gha)
635− _ -> putStrLn "Set DATABASE_CONNSTRING environment variable"
636− where
637− -- https://www.appveyor.com/docs/services-databases/
638− special "appveyor" = "dbname='TestDb' user='postgres' password='Password12!'"
639− special "travis" = ""
640− special s = s
24+tests :: Connection -> [Test]
25+tests conn =
26+ [ TestLabel "Bytea" $ testBytea conn
27+ , TestLabel "Notify" $ testNotify conn withConn
28+ ]
64129
642− gha = unwords
643− [ "dbname='postgres'"
644− , "user='postgres'"
645− , "password='postgres'"
646− , "host='postgres'"
647− , "port=5432"
648− ]
30+main :: IO ()
31+main = do
32+ mapM_ (`hSetBuffering` LineBuffering) [stdout, stderr]
33+ Counts{cases, tried, errors, failures} <-
34+ withConn $ runTestTT . TestList . tests
35+ when (cases /= tried || errors /= 0 || failures /= 0) $ exitFailure
test/Notify.hs+4−2
@@ -1,3 +1,4 @@
1+{-# LANGUAGE OverloadedStrings #-}
12module Notify (testNotify) where
23
34import Common
@@ -14,8 +15,9 @@ import qualified Data.ByteString as B
1415-- TODO: Test with payload, but only for PostgreSQL >= 9.0
1516-- (when that feature was introduced).
1617
17−testNotify :: TestEnv -> Assertion
18−testNotify TestEnv{..} =
18+testNotify :: Connection -> ((Connection -> IO ()) -> IO ()) -> Test
19+testNotify conn withConn =
20+ TestCase $
1921 withConn $ \conn2 -> do
2022 execute_ conn "LISTEN foo"
2123 execute_ conn "LISTEN bar"
test/Serializable.hsdeleted−68
@@ -1,68 +0,0 @@
1−module Serializable (testSerializable) where
2−
3−import Common
4−import Control.Concurrent
5−import Control.Exception as E
6−import Data.IORef
7−import Database.PostgreSQL.Simple.Transaction
8−
9−initCounter :: Connection -> IO ()
10−initCounter conn = do
11− 0 <- execute_ conn "DROP TABLE IF EXISTS testSerializableCounter;\
12− \ CREATE TABLE testSerializableCounter (n INT)"
13− 1 <- execute_ conn "INSERT INTO testSerializableCounter VALUES (0)"
14− return ()
15−
16−getCounter :: Connection -> IO Int
17−getCounter conn = do
18− [Only n] <- query_ conn "SELECT n FROM testSerializableCounter"
19− return n
20−
21−putCounter :: Connection -> Int -> IO ()
22−putCounter conn n = do
23− 1 <- execute conn "UPDATE testSerializableCounter SET n=?" (Only n)
24− return ()
25−
26−testSerializable :: TestEnv -> Assertion
27−testSerializable TestEnv{..} =
28− withConn $ \conn2 -> do
29− initCounter conn
30−
31− attemptCounter <- newIORef (0 :: Int)
32− readyToBother <- newEmptyMVar
33− bothered <- newEmptyMVar
34− finished <- newEmptyMVar
35−
36− _ <- forkIO $ do
37− withTransactionSerializable conn2 $ do
38− modifyIORef attemptCounter (+1)
39− n <- getCounter conn2
40− True <- tryPutMVar readyToBother ()
41− readMVar bothered
42− putCounter conn2 (n+1)
43− putMVar finished ()
44−
45− takeMVar readyToBother
46− withTransactionSerializable conn $ do
47− n <- getCounter conn
48− putCounter conn (n+1)
49− True <- tryPutMVar bothered ()
50−
51− takeMVar finished
52−
53− ac <- readIORef attemptCounter
54− assertEqual "attemptCounter" 2 ac
55−
56− ok <- E.catch (do withTransactionSerializable conn (fail "Whoops")
57− return False)
58− (\(_ :: IOException) -> return True)
59− assertBool "Exceptions (besides serialization failure) should be\
60− \ propagated through withTransactionSerializable"
61− ok
62−
63− -- Make sure transaction isn't dangling
64− 1 <- execute_ conn "UPDATE testSerializableCounter SET n=12345"
65− 0 <- execute_ conn "ROLLBACK"
66− -- This prints "NOTICE: there is no transaction in progress"
67− [Only (12345 :: Int)] <- query_ conn "SELECT n FROM testSerializableCounter"
68− return ()
test/Time.hsdeleted−119
@@ -1,119 +0,0 @@
1−{-# LANGUAGE QuasiQuotes #-}
2−
3−{-
4−
5−Testing strategies:
6−
7−fromString . toString == id ** Todo?
8−
9−toString . fromString == almost id ** Todo?
10−
11−postgresql -> haskell -> postgresql * Done
12−
13−haskell -> postgresql -> haskell ** Todo?
14−
15−But still, what we really want to establish is that the two values
16−correspond; for example, a conversion that consistently added hour
17−when printed to a string and subtracted an hour when parsed from string
18−would still pass these tests.
19−
20−
21−Right now, we are checking that 1400+ timestamps in the range of 1860 to
22−2060 round trip from postgresql to haskell and back in 5 different timezones.
23−In addition to UTC, the four timezones were selected so that 2 have a positive
24−offset, and 2 have a negative offset, and that 2 have an offset of a
25−whole number of hours, while the other two do not.
26−
27−It may be worth adding a few more timezones to ensure better test coverage.
28−
29−We are checking a handful of selected timestamps to ensure we hit
30−various corner-cases in the code, in addition to 1400 timestamps randomly
31−generated with granularity of seconds down to microseconds in powers of ten.
32−
33−-}
34−
35−module Time (testTime) where
36−
37−import Common
38−import Control.Monad(forM_, replicateM_)
39−import Data.Time.Compat
40−import Data.ByteString(ByteString)
41−import Database.PostgreSQL.Simple.SqlQQ
42−
43−numTests :: Int
44−numTests = 200
45−
46−testTime :: TestEnv -> Assertion
47−testTime env@TestEnv{..} = do
48− initializeTable env
49− execute_ conn "SET timezone TO 'UTC'"
50− checkRoundTrips env "1860-01-01 00:00:00+00"
51− execute_ conn "SET timezone TO 'America/Chicago'" -- -5:00
52− checkRoundTrips env "1883-11-18 12:00:00-06"
53− execute_ conn "SET timezone TO 'Asia/Tokyo'" -- +9:00
54− checkRoundTrips env "1888-01-01 00:00:00+09"
55− execute_ conn "SET timezone TO 'Asia/Kathmandu'" -- +5:45
56− checkRoundTrips env "1919-12-31 23:48:44+05:30"
57− execute_ conn "SET timezone TO 'America/St_Johns'" -- -3:30
58− checkRoundTrips env "1935-03-30 00:00:52-03:30"
59−
60−initializeTable :: TestEnv -> IO ()
61−initializeTable TestEnv{..} = withTransaction conn $ do
62− execute_ conn
63− [sql| CREATE TEMPORARY TABLE testtime
64− ( x serial, y timestamptz, PRIMARY KEY(x) ) |]
65−
66− let test :: ByteString -> IO () = \x -> do
67− execute conn [sql|
68− INSERT INTO testtime (y) VALUES (?)
69− |] (Only x)
70− return ()
71− -- America/Chicago
72− test "1883-11-18 11:59:59-05:50:36"
73− test "1883-11-18 12:09:23-05:50:36"
74− test "1883-11-18 12:00:00-06"
75− -- Asia/Tokyo
76− test "1887-12-31 23:59:59+09:18:59"
77− test "1888-01-01 00:18:58+09:18:59"
78− test "1888-01-01 00:00:00+09"
79− -- Asia/Kathmandu
80− test "1919-12-31 23:59:59+05:41:16"
81− test "1919-12-31 23:48:44+05:30"
82− test "1985-12-31 23:59:59+05:30"
83− test "1986-01-01 00:15:00+05:45"
84− -- America/St_Johns
85− test "1935-03-29 23:59:59-03:30:52"
86− test "1935-03-30 00:00:52-03:30"
87−
88− -- While the above special cases are probably a decent start, there
89− -- are probably more that are well worth adding to ensure better
90− -- coverage.
91−
92− let pop :: ByteString -> Double -> IO () = \x y ->
93− replicateM_ numTests $ execute conn
94− [sql| INSERT INTO testtime (y) VALUES
95− ('1860-01-01 00:00:00+00'::timestamptz
96− + ?::interval * ROUND(RANDOM() * ?)) |] (x,y)
97− pop "1 microsecond" 6.3113904e15
98− pop "10 microseconds" 6.3113904e14
99− pop "100 microseconds" 6.3113904e13
100− pop "1 millisecond" 6.3113904e12
101− pop "10 milliseconds" 6.3113904e11
102− pop "100 milliseconds" 6.3113904e10
103− pop "1 second" 6.3113904e9
104−
105−checkRoundTrips :: TestEnv -> ByteString -> IO ()
106−checkRoundTrips TestEnv{..} limit = do
107− yxs :: [(UTCTime, Int)] <- query_ conn [sql| SELECT y, x FROM testtime |]
108− forM_ yxs $ \yx -> do
109− res <- query conn [sql| SELECT y=? FROM testtime WHERE x=? |] yx
110− assertBool "UTCTime did not round-trip from SQL to Haskell and back" $
111− res == [Only True]
112−
113− yxs :: [(ZonedTime, Int)] <- query conn [sql|
114− SELECT y, x FROM testtime WHERE y > ?
115− |] (Only limit)
116− forM_ yxs $ \yx -> do
117− res <- query conn [sql| SELECT y=? FROM testtime WHERE x=? |] yx
118− assertBool "ZonedTime did not round-trip from SQL to Haskell and back" $
119− res == [Only True]
test/WRITING-TESTS+11−38
@@ -1,42 +1,15 @@
1−Do what is EASIEST. Having a test at all is more important than,
2−say, pretty failure output.
1+Main.hs is a small wrapper around HUnit that opens a database connection and
2+starts the HUnit text-based test controller.
33
4−To add a test, open Main.hs, and add an entry to tests, e.g.:
4+To add a new module to the test suite, do the following:
55
6− tests :: [TestEnv -> Test]
7− tests =
8− [ ...
9− , TestLabel "Foo" . testFoo
10− ]
6+ * Create a new module that exports a function of type Connection -> Test.
7+ 'Test' is basically a tree of 'Assertion's, where 'Assertion' is just a type
8+ alias for IO (). See Bytea.hs for reference.
119
12− testFoo :: TestEnv -> Test
13− testFoo TestEnv{..} = TestCase $ do
14− meaningOfLife @?= 42
15− 2013 <- getCurrentYear
16− return ()
10+ * Add an entry to 'tests' in Main.hs (along with the corresponding
11+ module import) so the test driver will know about the new module.
1712
18−Mnemonic for HUnit @=? and @?= operators:
19−
20− * `?` is the value whose correctness is in question
21−
22− * `=` is the expected value
23−
24−If you move a test to a separate module, don't forget to add it to
25−"other-modules" in postgresql-simple.cabal . Otherwise, the module will be
26−left out of the tarball generated by `cabal sdist`, and tests will fail to
27−build when installing from Hackage.
28−
29−'TestEnv' (defined in Common.hs) contains information for accessing the
30−database. `TestEnv{..}` is a record wildcard which brings the following
31−definitions into scope:
32−
33− conn :: Connection
34− withConn :: (Connection -> IO a) -> IO a
35−
36−'conn' is a database connection shared by all the tests.
37−'withConn' can be used to open additional connections (to the same database).
38−
39−'Test' is basically a tree of 'Assertion's, where 'Assertion' is just a type
40−alias for IO (). See the [HUnit documentation][1] for more information.
41−
42− [1]: http://hackage.haskell.org/packages/archive/HUnit/latest/doc/html/Test-HUnit-Base.html
13+ * Add the module to postgresql-simple.cabal, under test-suite > other-modules.
14+ Otherwise, the module will be left out of the tarball generated by
15+ `cabal sdist`, and tests will fail to build when installing from Hackage.
test/results/malformed-input.expecteddeleted−4
@@ -1,4 +0,0 @@
1−user error (Database.PostgreSQL.Simple.Copy.putCopyEnd: failed to parse command status
2−Connection error: ERROR: invalid input syntax for type integer: "z"
3−CONTEXT: COPY copy_unique_constraint_error_test, line 3, column x: "z"
4−)
test/results/unique-constraint-violation.expecteddeleted−5
@@ -1,5 +0,0 @@
1−user error (Database.PostgreSQL.Simple.Copy.putCopyEnd: failed to parse command status
2−Connection error: ERROR: duplicate key value violates unique constraint "copy_unique_constraint_error_test_pkey"
3−DETAIL: Key (x)=(1) already exists.
4−CONTEXT: COPY copy_unique_constraint_error_test, line 3
5−)
tools/GenBuiltinTypes.hsnew file+185
@@ -0,0 +1,185 @@
1+------------------------------------------------------------------------------
2+-- |
3+-- Module: GenBuiltinTypes
4+-- Copyright: (c) 2011 Leon P Smith
5+-- License: BSD3
6+-- Maintainer: Leon P Smith <leon@melding-monads.com>
7+-- Stability: experimental
8+--
9+-- Queries a PostgreSQL for the Object IDs associated with built-in typenames,
10+-- and generates Haskell boilerplate to handle this mapping. The subset
11+-- of types handled this way is easily modifiable, but note that
12+-- user-defined types do not have stable oids, and can differ between
13+-- databases or dumps/reloads.
14+------------------------------------------------------------------------------
15+
16+{-# LANGUAGE OverloadedStrings, QuasiQuotes, ViewPatterns #-}
17+module GenBuiltinTypes where
18+
19+import Prelude hiding ((++))
20+
21+import StringsQQ
22+import Database.PostgreSQL.Simple
23+import qualified Data.ByteString.Char8 as B
24+import qualified Data.ByteString.Lazy as L
25+import qualified Blaze.ByteString.Builder as Blaze
26+import qualified Blaze.ByteString.Builder.ByteString as Blaze
27+import qualified Blaze.ByteString.Builder.Char8 as Blaze
28+import Data.String
29+import Data.List ( sort, intersperse )
30+import qualified Data.Map as Map
31+
32+import Data.Monoid
33+
34+(++) :: Monoid a => a -> a -> a
35+(++) = mappend
36+infixr 5 ++
37+
38+type Map = Map.Map B.ByteString Int
39+builtins :: [(B.ByteString, B.ByteString)]
40+builtins = [strings|
41+bool
42+bytea
43+char
44+name
45+int8
46+int2
47+int4
48+regproc
49+text
50+oid
51+tid
52+xid
53+cid
54+xml
55+point
56+lseg
57+path
58+box
59+polygon
60+line
61+cidr
62+float4
63+float8
64+abstime
65+reltime
66+tinterval
67+unknown
68+circle
69+money
70+macaddr
71+inet
72+bpchar
73+varchar
74+date
75+time
76+timestamp
77+timestamptz TimestampWithTimeZone
78+interval
79+timetz TimeWithTimeZone
80+bit
81+varbit
82+numeric
83+refcursor
84+record
85+void
86+|]
87+
88+instance IsString Blaze.Builder where
89+ fromString = Blaze.fromByteString . fromString
90+
91+main = do
92+ conn <- connect ConnectInfo {
93+ connectHost = "127.0.0.1",
94+ connectPort = 5432,
95+ connectUser = "aliadmin",
96+ connectPassword = "aliadmin",
97+ connectDatabase = "postgres"
98+ }
99+ xs <- query conn "SELECT typname::text, oid::int\
100+ \ FROM pg_type\
101+ \ WHERE typname IN ?"
102+ (Only (In (sort (map fst builtins))))
103+ close conn
104+ let oidmap = Map.fromList xs :: Map
105+ L.writeFile "../src/Database/PostgreSQL/Simple/BuiltinTypes.hs"
106+ (Blaze.toLazyByteString (renderFile oidmap builtins))
107+
108+padCons str = fromString (replicate (len - B.length str) ' ')
109+ where
110+ len = maximum (map (B.length . snd) builtins)
111+
112+renderOid oidmap x
113+ = case Map.lookup x oidmap of
114+ Nothing -> error (B.unpack x)
115+ Just (show -> n) -> fromString (replicate (4 - length n) ' ')
116+ ++ fromString n
117+
118+renderOid' oidmap x
119+ = case Map.lookup x oidmap of
120+ Nothing -> error (B.unpack x)
121+ Just (show -> n) -> fromString n
122+ ++ fromString (replicate (4 - length n) ' ')
123+
124+bs = Blaze.fromByteString
125+
126+renderFile :: Map -> [(B.ByteString,B.ByteString)] -> Blaze.Builder
127+renderFile oidmap builtins = ([longstring|
128+{-# LANGUAGE DeriveDataTypeable, OverloadedStrings #-}
129+
130+------------------------------------------------------------------------------
131+-- |
132+-- Module: Database.PostgreSQL.Simple.BuiltinTypes
133+-- Copyright: (c) 2011 Leon P Smith
134+-- License: BSD3
135+-- Maintainer: Leon P Smith <leon@melding-monads.com>
136+-- Stability: experimental
137+--
138+------------------------------------------------------------------------------
139+
140+-- Note that this file is generated by tools/GenBuiltinTypes.hs, and should
141+-- not be edited directly
142+
143+module Database.PostgreSQL.Simple.BuiltinTypes
144+ ( BuiltinType (..)
145+ , builtin2oid
146+ , oid2builtin
147+ , builtin2typname
148+ , oid2typname
149+ ) where
150+
151+import Data.Typeable
152+import Data.ByteString (ByteString)
153+import qualified Database.PostgreSQL.LibPQ as PQ
154+
155+data BuiltinType
156+ = |] ++ mconcat (intersperse "\n | " (map (Blaze.fromByteString . snd) builtins)) ++ [longstring|
157+
158+ deriving (Eq, Ord, Enum, Bounded, Read, Show, Typeable)
159+
160+builtin2oid :: BuiltinType -> PQ.Oid
161+builtin2oid typ = PQ.Oid $ case typ of
162+|] ++ mconcat [mconcat [ " ", bs y, padCons y, " -> "
163+ , renderOid oidmap x, "\n" ]
164+ | (x,y) <- builtins ] ++ [longstring|
165+
166+oid2builtin :: PQ.Oid -> Maybe BuiltinType
167+oid2builtin (PQ.Oid x) = case x of
168+|] ++ mconcat [mconcat [ " ", renderOid' oidmap x, " -> Just ", bs y, "\n" ]
169+ | (x,y) <- builtins ] ++ [longstring|
170+ _ -> Nothing
171+
172+builtin2typname :: BuiltinType -> ByteString
173+builtin2typname typ = case typ of
174+|] ++ mconcat [mconcat [ " ", bs y, padCons y, " -> ", bs x, "\n"]
175+ | (x,y) <- builtins] ++ [longstring|
176+
177+oid2typname :: PQ.Oid -> Maybe ByteString
178+oid2typname (PQ.Oid x) = case x of
179+|] ++ mconcat [mconcat [ " ", renderOid' oidmap x, " -> Just ", bs x, "\n" ]
180+ | (x,y) <- builtins ]
181+ ++ " _ -> Nothing\n"
182+ ++ mconcat [mconcat [ "\n"
183+ , bs x, " :: ByteString\n"
184+ , bs x, " = \"", bs x, "\"\n"]
185+ | (x,_y) <- builtins ])
tools/GenTypeInfo.hsdeleted−381
@@ -1,381 +0,0 @@
1−------------------------------------------------------------------------------
2−-- |
3−-- Module: GenTypeInfo
4−-- Copyright: (c) 2011-2012 Leon P Smith
5−-- License: BSD3
6−-- Maintainer: Leon P Smith <leon@melding-monads.com>
7−-- Stability: experimental
8−--
9−-- Queries a PostgreSQL database for the Object IDs and other type
10−-- information associated with typenames, and generates a module with
11−-- data constants representing part of the pg_type table.
12−--
13−-- Note that only some of the built-in types have stable type OIDs, and
14−-- thus a TypeInfo module that contains user-defined types is liable to
15−-- not work across different database instances. For these types, it is
16−-- better for `FromField` to use the `typeinfo` operator that works for
17−-- any type, whether or not it is in this module.
18−--
19−-- `typeinfo` works because postgresql-simple will dynamically query
20−-- the pg_types table the first time it receives a type OID it doesn't
21−-- know about. It then constructs a TypeInfo record and stores it in
22−-- a per-connection cache for later use.
23−--
24−-- @
25−-- runghc -itools tools/GenTypeInfo.hs
26−-- @
27−------------------------------------------------------------------------------
28−
29−{-# LANGUAGE OverloadedStrings, QuasiQuotes, ViewPatterns, RecordWildCards #-}
30−
31−module GenBuiltinTypes where
32−
33−import Prelude hiding ((++), concat)
34−
35−import StringsQQ
36−import Control.Arrow((&&&))
37−import Control.Applicative
38−import Control.Exception(bracket)
39−import Database.PostgreSQL.Simple
40−import Database.PostgreSQL.Simple.FromRow
41−import Database.PostgreSQL.Simple.Ok
42−import Database.PostgreSQL.Simple.Types(Oid(..))
43−import Database.PostgreSQL.Simple.SqlQQ
44−import qualified Data.ByteString.Char8 as B8
45−import Data.ByteString(ByteString)
46−import qualified Data.ByteString.Lazy as L
47−import qualified Data.ByteString.Builder as Blaze
48−import Data.String
49−import Data.List ( sort, intersperse )
50−import qualified Data.Map as Map
51−
52−import Data.Monoid
53−
54−(++) :: Monoid a => a -> a -> a
55−(++) = mappend
56−infixr 5 ++
57−
58−concat :: Monoid a => [a] -> a
59−concat = mconcat
60−
61−data TypeInfo = TypeInfo
62− { typoid :: Oid
63− , typcategory :: Char
64− , typdelim :: Char
65− , typname :: ByteString
66− , typelem :: Oid
67− , rngsubtype :: Maybe Oid
68− }
69−
70−instance FromRow TypeInfo where
71− fromRow = TypeInfo <$> field <*> field <*> field <*> field <*> field <*> field
72−
73−type NameMap = Map.Map B8.ByteString TypeInfo
74−
75−type OidMap = Map.Map Oid TypeInfo
76−
77−type TypeName = (B8.ByteString, B8.ByteString)
78−
79−type TypeNames = [TypeName]
80−
81−-- Note that the following syntax is "pgName <whitespace> hsName", though
82−-- they default to the same thing if there is only one identifier
83−typeNames :: TypeNames
84−typeNames = [typenames|
85−bool
86−bytea
87−char
88−name
89−int8
90−int2
91−int4
92−regproc
93−text
94−oid
95−tid
96−xid
97−cid
98−xml
99−point
100−lseg
101−path
102−box
103−polygon
104−line
105−cidr
106−float4
107−float8
108−unknown
109−circle
110−money
111−macaddr
112−inet
113−bpchar
114−varchar
115−date
116−time
117−timestamp
118−timestamptz
119−interval
120−timetz
121−bit
122−varbit
123−numeric
124−refcursor
125−record
126−void
127−_record array_record
128−regprocedure
129−regoper
130−regoperator
131−regclass
132−regtype
133−uuid
134−json
135−jsonb
136−int2vector
137−oidvector
138−_xml array_xml
139−_json array_json
140−_line array_line
141−_cidr array_cidr
142−_circle array_circle
143−_money array_money
144−_bool array_bool
145−_bytea array_bytea
146−_char array_char
147−_name array_name
148−_int2 array_int2
149−_int2vector array_int2vector
150−_int4 array_int4
151−_regproc array_regproc
152−_text array_text
153−_tid array_tid
154−_xid array_xid
155−_cid array_cid
156−_oidvector array_oidvector
157−_bpchar array_bpchar
158−_varchar array_varchar
159−_int8 array_int8
160−_point array_point
161−_lseg array_lseg
162−_path array_path
163−_box array_box
164−_float4 array_float4
165−_float8 array_float8
166−_polygon array_polygon
167−_oid array_oid
168−_macaddr array_macaddr
169−_inet array_inet
170−_timestamp array_timestamp
171−_date array_date
172−_time array_time
173−_timestamptz array_timestamptz
174−_interval array_interval
175−_numeric array_numeric
176−_timetz array_timetz
177−_bit array_bit
178−_varbit array_varbit
179−_refcursor array_refcursor
180−_regprocedure array_regprocedure
181−_regoper array_regoper
182−_regoperator array_regoperator
183−_regclass array_regclass
184−_regtype array_regtype
185−_uuid array_uuid
186−_jsonb array_jsonb
187−int4range
188−_int4range
189−numrange
190−_numrange
191−tsrange
192−_tsrange
193−tstzrange
194−_tstzrange
195−daterange
196−_daterange
197−int8range
198−_int8range
199−|]
200−
201−connectionString = "dbname=postgres"
202−
203−withPostgreSQL = bracket (connectPostgreSQL connectionString) close
204−
205−getTypeInfos :: TypeNames -> IO (OidMap, NameMap)
206−getTypeInfos typnames = withPostgreSQL $ \conn -> do
207− infos <- query conn [sql|
208− WITH types AS
209− (SELECT oid, typcategory, typdelim, typname, typelem
210− FROM pg_type WHERE typname IN ?)
211− SELECT types.*, rngsubtype FROM types LEFT JOIN pg_range ON oid = rngtypid
212− |] (Only (In (sort (map pg typnames))))
213− loop conn (oidMap infos) (nameMap infos) infos
214− where
215− oidMap = Map.fromList . map (typoid &&& id)
216− nameMap = Map.fromList . map (typname &&& id)
217− loop conn oids names infos = do
218− let unknowns = [ x | x <- map typelem infos ++
219− [ x | Just x <- map rngsubtype infos ],
220− x /= Oid 0,
221− not (Map.member x oids) ]
222− case unknowns of
223− [] -> return (oids, names)
224− (_:_) -> do
225− infos' <- query conn [sql|
226− WITH types AS
227− (SELECT oid, typcategory, typdelim, typname, typelem
228− FROM pg_type WHERE oid IN ?)
229− SELECT types.*, rngsubtype
230− FROM types LEFT JOIN pg_range ON oid = rngtypid
231− |] (Only (In (sort unknowns)))
232− let oids' = oids `Map.union` oidMap infos'
233− names' = names `Map.union` nameMap infos'
234− loop conn oids' names' infos'
235−
236−main = do
237− (oidmap, namemap) <- getTypeInfos typeNames
238− L.writeFile "src/Database/PostgreSQL/Simple/TypeInfo/Static.hs"
239− (Blaze.toLazyByteString (renderFile oidmap namemap typeNames))
240−
241−
242−showOid (Oid n) = show n
243−
244−renderOid :: NameMap -> TypeName -> Blaze.Builder
245−renderOid byName name
246− = case Map.lookup (pg name) byName of
247− Nothing -> error (B8.unpack (pg name))
248− Just (showOid . typoid -> n) -> fromString n
249− ++ fromString (replicate (4 - length n) ' ')
250−
251−renderElem :: OidMap -> Oid -> Blaze.Builder
252−renderElem byOid elemOid
253− | elemOid == Oid 0 = "Nothing"
254− | otherwise = case Map.lookup elemOid byOid of
255− Nothing -> error ("oid not found: " ++ show elemOid)
256− Just x -> "Just " ++ bs (typname x)
257−
258−renderTypeInfo :: OidMap -> TypeInfo -> TypeName -> Blaze.Builder
259−renderTypeInfo byOid info name
260− | typcategory info == 'A' || typname info == "_record" =
261− let (Just typelem_info) = Map.lookup (typelem info) byOid
262− typelem_hs_name =
263− case lookup (typname typelem_info) typeNames of
264− Nothing -> error ( "type not found: "
265− ++ B8.unpack( typname typelem_info)
266− ++ " (typelem of " ++ B8.unpack (typname info)
267− ++ ")")
268− Just x -> x
269− in concat
270− [ "\n"
271− , bs (hs name), " :: TypeInfo\n"
272− , bs (hs name), " = Array {\n"
273− , " typoid = ", bs (hs name), "Oid,\n"
274− , " typcategory = '", bs $ B8.singleton (typcategory info), "',\n"
275− , " typdelim = '", bs $ B8.singleton (typdelim info), "',\n"
276− , " typname = \"", bs (typname info), "\",\n"
277− , " typelem = ", bs typelem_hs_name, "\n"
278− , " }\n"
279− , "\n"
280− , bs (hs name), "Oid :: Oid\n"
281− , bs (hs name), "Oid = ", fromString (show (typoid info)), "\n"
282− , "{-# INLINE ", bs (hs name), "Oid #-}"
283− , "\n"
284− ]
285− | typcategory info == 'R' =
286− let (Just rngsubtype_oid) = rngsubtype info
287− (Just rngsubtype_info) = Map.lookup rngsubtype_oid byOid
288− rngsubtype_hs_name =
289− case lookup (typname rngsubtype_info) typeNames of
290− Nothing -> error ( "type not found: "
291− ++ B8.unpack (typname rngsubtype_info)
292− ++ " (rngsubtype of "
293− ++ B8.unpack (typname info) ++ ")")
294− Just x -> x
295− in concat
296− [ "\n"
297− , bs (hs name), " :: TypeInfo\n"
298− , bs (hs name), " = Range {\n"
299− , " typoid = ", bs (hs name), "Oid,\n"
300− , " typcategory = '", bs $ B8.singleton (typcategory info), "',\n"
301− , " typdelim = '", bs $ B8.singleton (typdelim info), "',\n"
302− , " typname = \"", bs (typname info), "\",\n"
303− , " rngsubtype = ", bs rngsubtype_hs_name, "\n"
304− , " }\n"
305− , "\n"
306− , bs (hs name), "Oid :: Oid\n"
307− , bs (hs name), "Oid = ", fromString (show (typoid info)), "\n"
308− , "{-# INLINE ", bs (hs name), "Oid #-}"
309− , "\n"
310− ]
311− | otherwise =
312− concat
313− [ "\n"
314− , bs (hs name), " :: TypeInfo\n"
315− , bs (hs name), " = Basic {\n"
316− , " typoid = ", bs (hs name), "Oid,\n"
317− , " typcategory = '", bs $ B8.singleton (typcategory info), "',\n"
318− , " typdelim = '", bs $ B8.singleton (typdelim info), "',\n"
319− , " typname = \"", bs (typname info), "\"\n"
320− , " }\n"
321− , "\n"
322− , bs (hs name), "Oid :: Oid\n"
323− , bs (hs name), "Oid = ", fromString (show (typoid info)), "\n"
324− , "{-# INLINE ", bs (hs name), "Oid #-}"
325− , "\n"
326− ]
327−
328−-- FIXME: add in any names that we need that we didn't specify, (i.e.
329−-- the "unknowns" in getTypeInfos
330−-- and munge them into a valid haskell identifier if needed.
331−getNames :: NameMap -> TypeNames -> TypeNames
332−getNames _ x = x
333−
334−bs = Blaze.byteString
335−
336−pg = fst
337−
338−hs = snd
339−
340−renderFile :: OidMap -> NameMap -> TypeNames -> Blaze.Builder
341−renderFile byOid byName names = ([longstring|
342−------------------------------------------------------------------------------
343−-- |
344−-- Module: Database.PostgreSQL.Simple.TypeInfo
345−-- Copyright: (c) 2011-2012 Leon P Smith
346−-- License: BSD3
347−-- Maintainer: Leon P Smith <leon@melding-monads.com>
348−-- Stability: experimental
349−--
350−-- This module contains portions of the @pg_type@ table that are relevant
351−-- to postgresql-simple and are believed to not change between PostgreSQL
352−-- versions.
353−--
354−------------------------------------------------------------------------------
355−
356−-- Note that this file is generated by tools/GenTypeInfo.hs, and should
357−-- not be edited directly
358−
359−module Database.PostgreSQL.Simple.TypeInfo.Static
360− ( TypeInfo(..)
361− , staticTypeInfo
362−|] ++ concat [ " , " ++ bs (hs name) ++ "\n"
363− ++ " , " ++ bs (hs name) ++ "Oid\n"
364− | name <- names ] ++ [longstring|
365− ) where
366−
367−import Database.PostgreSQL.LibPQ (Oid(..))
368−import Database.PostgreSQL.Simple.TypeInfo.Types
369−
370−staticTypeInfo :: Oid -> Maybe TypeInfo
371−staticTypeInfo (Oid x) = case x of
372−|] ++ concat [concat [ " ", renderOid byName name,
373− " -> Just ", bs (hs name), "\n"
374− ]
375− | name <- names ]
376− ++ [longstring|
377− _ -> Nothing
378−|]
379− ++ concat [ renderTypeInfo byOid typeInfo name
380− | name <- getNames byName names
381− , let (Just typeInfo) = Map.lookup (pg name) byName])
tools/StringsQQ.hs+1−12
@@ -1,6 +1,6 @@
11{-# LANGUAGE TemplateHaskell #-}
22
3−module StringsQQ (strings, longstring, typenames) where
3+module StringsQQ (strings, longstring) where
44
55import Language.Haskell.TH
66import Language.Haskell.TH.Quote
@@ -28,14 +28,3 @@ longstring = QuasiQuoter { quotePat = undefined,
2828
2929longstringExp ('\n':xs) = stringE xs
3030longstringExp xs = stringE xs
31−
32−typenames = QuasiQuoter { quotePat = undefined,
33− quoteType = undefined,
34− quoteExp = typenamesExp,
35− quoteDec = undefined }
36−
37−typenamesExp :: String -> Q Exp
38−typenamesExp = foldr (\x xs -> [e| $(x) : $(xs) |]) [e| [] |]
39− . map delta . filter (not . null) . map words . lines
40− where delta [xs] = delta [xs,xs]
41− delta [xs,ys] = [e| ( $(stringE xs) , $(stringE ys) ) |]