commit 753f014505328cac4836243952a87d64103a0da5 Author: Julien Lengrand-Lambert Date: Thu Jan 9 20:15:20 2025 +0100 Create repo example diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..b1dff0d --- /dev/null +++ b/.gitignore @@ -0,0 +1,45 @@ +.gradle +build/ +!gradle/wrapper/gradle-wrapper.jar +!**/src/main/**/build/ +!**/src/test/**/build/ + +### IntelliJ IDEA ### +.idea/modules.xml +.idea/jarRepositories.xml +.idea/compiler.xml +.idea/libraries/ +*.iws +*.iml +*.ipr +out/ +!**/src/main/**/out/ +!**/src/test/**/out/ + +### Kotlin ### +.kotlin + +### Eclipse ### +.apt_generated +.classpath +.factorypath +.project +.settings +.springBeans +.sts4-cache +bin/ +!**/src/main/**/bin/ +!**/src/test/**/bin/ + +### NetBeans ### +/nbproject/private/ +/nbbuild/ +/dist/ +/nbdist/ +/.nb-gradle/ + +### VS Code ### +.vscode/ + +### Mac OS ### +.DS_Store \ No newline at end of file diff --git a/.idea/.gitignore b/.idea/.gitignore new file mode 100644 index 0000000..13566b8 --- /dev/null +++ b/.idea/.gitignore @@ -0,0 +1,8 @@ +# Default ignored files +/shelf/ +/workspace.xml +# Editor-based HTTP Client requests +/httpRequests/ +# Datasource local storage ignored files +/dataSources/ +/dataSources.local.xml diff --git a/.idea/dataSources.xml b/.idea/dataSources.xml new file mode 100644 index 0000000..1ce079d --- /dev/null +++ b/.idea/dataSources.xml @@ -0,0 +1,23 @@ + + + + + sqlite.xerial + true + org.sqlite.JDBC + jdbc:sqlite:$PROJECT_DIR$/src/main/kotlin/example.db + + + + $ProjectFileDir$ + + + file://$APPLICATION_CONFIG_DIR$/jdbc-drivers/Xerial SQLiteJDBC/3.45.1/org/xerial/sqlite-jdbc/3.45.1.0/sqlite-jdbc-3.45.1.0.jar + + + file://$APPLICATION_CONFIG_DIR$/jdbc-drivers/Xerial SQLiteJDBC/3.45.1/org/slf4j/slf4j-api/1.7.36/slf4j-api-1.7.36.jar + + + + + \ No newline at end of file diff --git a/.idea/gradle.xml b/.idea/gradle.xml new file mode 100644 index 0000000..c2bad94 --- /dev/null +++ b/.idea/gradle.xml @@ -0,0 +1,17 @@ + + + + + + + \ No newline at end of file diff --git a/.idea/kotlinc.xml b/.idea/kotlinc.xml new file mode 100644 index 0000000..c224ad5 --- /dev/null +++ b/.idea/kotlinc.xml @@ -0,0 +1,6 @@ + + + + + \ No newline at end of file diff --git a/.idea/misc.xml b/.idea/misc.xml new file mode 100644 index 0000000..2758df8 --- /dev/null +++ b/.idea/misc.xml @@ -0,0 +1,10 @@ + + + + + + + + + + \ No newline at end of file diff --git a/.idea/sqldialects.xml b/.idea/sqldialects.xml new file mode 100644 index 0000000..c0e01ca --- /dev/null +++ b/.idea/sqldialects.xml @@ -0,0 +1,6 @@ + + + + + + \ No newline at end of file diff --git a/.idea/vcs.xml b/.idea/vcs.xml new file mode 100644 index 0000000..94a25f7 --- /dev/null +++ b/.idea/vcs.xml @@ -0,0 +1,6 @@ + + + + + + \ No newline at end of file diff --git a/build.gradle.kts b/build.gradle.kts new file mode 100644 index 0000000..87f52b6 --- /dev/null +++ b/build.gradle.kts @@ -0,0 +1,24 @@ +plugins { + kotlin("jvm") version "2.0.21" + id("org.jetbrains.kotlinx.dataframe") version "0.15.0" +} + +group = "nl.lengrand" +version = "1.0-SNAPSHOT" + +repositories { + mavenCentral() +} + +dependencies { + implementation("org.xerial:sqlite-jdbc:3.47.1.0") + implementation("org.jetbrains.kotlinx:dataframe:0.15.0") + testImplementation(kotlin("test")) +} + +tasks.test { + useJUnitPlatform() +} +kotlin { + jvmToolchain(21) +} \ No newline at end of file diff --git a/createAndPopulate.sh b/createAndPopulate.sh new file mode 100755 index 0000000..31334c2 --- /dev/null +++ b/createAndPopulate.sh @@ -0,0 +1,3 @@ +#!/bin/sh + +sqlite3 example.db < sample.sql diff --git a/example.db b/example.db new file mode 100644 index 0000000..a3e8eef Binary files /dev/null and b/example.db differ diff --git a/gradle.properties b/gradle.properties new file mode 100644 index 0000000..7fc6f1f --- /dev/null +++ b/gradle.properties @@ -0,0 +1 @@ +kotlin.code.style=official diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar new file mode 100644 index 0000000..249e583 Binary files /dev/null and b/gradle/wrapper/gradle-wrapper.jar differ diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties new file mode 100644 index 0000000..a3d848b --- /dev/null +++ b/gradle/wrapper/gradle-wrapper.properties @@ -0,0 +1,6 @@ +#Thu Jan 09 16:46:52 CET 2025 +distributionBase=GRADLE_USER_HOME +distributionPath=wrapper/dists +distributionUrl=https\://services.gradle.org/distributions/gradle-8.10-bin.zip +zipStoreBase=GRADLE_USER_HOME +zipStorePath=wrapper/dists diff --git a/gradlew b/gradlew new file mode 100755 index 0000000..1b6c787 --- /dev/null +++ b/gradlew @@ -0,0 +1,234 @@ +#!/bin/sh + +# +# Copyright © 2015-2021 the original authors. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# https://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. +# + +############################################################################## +# +# Gradle start up script for POSIX generated by Gradle. +# +# Important for running: +# +# (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is +# noncompliant, but you have some other compliant shell such as ksh or +# bash, then to run this script, type that shell name before the whole +# command line, like: +# +# ksh Gradle +# +# Busybox and similar reduced shells will NOT work, because this script +# requires all of these POSIX shell features: +# * functions; +# * expansions «$var», «${var}», «${var:-default}», «${var+SET}», +# «${var#prefix}», «${var%suffix}», and «$( cmd )»; +# * compound commands having a testable exit status, especially «case»; +# * various built-in commands including «command», «set», and «ulimit». +# +# Important for patching: +# +# (2) This script targets any POSIX shell, so it avoids extensions provided +# by Bash, Ksh, etc; in particular arrays are avoided. +# +# The "traditional" practice of packing multiple parameters into a +# space-separated string is a well documented source of bugs and security +# problems, so this is (mostly) avoided, by progressively accumulating +# options in "$@", and eventually passing that to Java. +# +# Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS, +# and GRADLE_OPTS) rely on word-splitting, this is performed explicitly; +# see the in-line comments for details. +# +# There are tweaks for specific operating systems such as AIX, CygWin, +# Darwin, MinGW, and NonStop. +# +# (3) This script is generated from the Groovy template +# https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt +# within the Gradle project. +# +# You can find Gradle at https://github.com/gradle/gradle/. +# +############################################################################## + +# Attempt to set APP_HOME + +# Resolve links: $0 may be a link +app_path=$0 + +# Need this for daisy-chained symlinks. +while + APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path + [ -h "$app_path" ] +do + ls=$( ls -ld "$app_path" ) + link=${ls#*' -> '} + case $link in #( + /*) app_path=$link ;; #( + *) app_path=$APP_HOME$link ;; + esac +done + +APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit + +APP_NAME="Gradle" +APP_BASE_NAME=${0##*/} + +# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"' + +# Use the maximum available, or set MAX_FD != -1 to use that value. +MAX_FD=maximum + +warn () { + echo "$*" +} >&2 + +die () { + echo + echo "$*" + echo + exit 1 +} >&2 + +# OS specific support (must be 'true' or 'false'). +cygwin=false +msys=false +darwin=false +nonstop=false +case "$( uname )" in #( + CYGWIN* ) cygwin=true ;; #( + Darwin* ) darwin=true ;; #( + MSYS* | MINGW* ) msys=true ;; #( + NONSTOP* ) nonstop=true ;; +esac + +CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar + + +# Determine the Java command to use to start the JVM. +if [ -n "$JAVA_HOME" ] ; then + if [ -x "$JAVA_HOME/jre/sh/java" ] ; then + # IBM's JDK on AIX uses strange locations for the executables + JAVACMD=$JAVA_HOME/jre/sh/java + else + JAVACMD=$JAVA_HOME/bin/java + fi + if [ ! -x "$JAVACMD" ] ; then + die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." + fi +else + JAVACMD=java + which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." +fi + +# Increase the maximum file descriptors if we can. +if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then + case $MAX_FD in #( + max*) + MAX_FD=$( ulimit -H -n ) || + warn "Could not query maximum file descriptor limit" + esac + case $MAX_FD in #( + '' | soft) :;; #( + *) + ulimit -n "$MAX_FD" || + warn "Could not set maximum file descriptor limit to $MAX_FD" + esac +fi + +# Collect all arguments for the java command, stacking in reverse order: +# * args from the command line +# * the main class name +# * -classpath +# * -D...appname settings +# * --module-path (only if needed) +# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables. + +# For Cygwin or MSYS, switch paths to Windows format before running java +if "$cygwin" || "$msys" ; then + APP_HOME=$( cygpath --path --mixed "$APP_HOME" ) + CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" ) + + JAVACMD=$( cygpath --unix "$JAVACMD" ) + + # Now convert the arguments - kludge to limit ourselves to /bin/sh + for arg do + if + case $arg in #( + -*) false ;; # don't mess with options #( + /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath + [ -e "$t" ] ;; #( + *) false ;; + esac + then + arg=$( cygpath --path --ignore --mixed "$arg" ) + fi + # Roll the args list around exactly as many times as the number of + # args, so each arg winds up back in the position where it started, but + # possibly modified. + # + # NB: a `for` loop captures its iteration list before it begins, so + # changing the positional parameters here affects neither the number of + # iterations, nor the values presented in `arg`. + shift # remove old arg + set -- "$@" "$arg" # push replacement arg + done +fi + +# Collect all arguments for the java command; +# * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of +# shell script including quotes and variable substitutions, so put them in +# double quotes to make sure that they get re-expanded; and +# * put everything else in single quotes, so that it's not re-expanded. + +set -- \ + "-Dorg.gradle.appname=$APP_BASE_NAME" \ + -classpath "$CLASSPATH" \ + org.gradle.wrapper.GradleWrapperMain \ + "$@" + +# Use "xargs" to parse quoted args. +# +# With -n1 it outputs one arg per line, with the quotes and backslashes removed. +# +# In Bash we could simply go: +# +# readarray ARGS < <( xargs -n1 <<<"$var" ) && +# set -- "${ARGS[@]}" "$@" +# +# but POSIX shell has neither arrays nor command substitution, so instead we +# post-process each arg (as a line of input to sed) to backslash-escape any +# character that might be a shell metacharacter, then use eval to reverse +# that process (while maintaining the separation between arguments), and wrap +# the whole thing up as a single "set" statement. +# +# This will of course break if any of these variables contains a newline or +# an unmatched quote. +# + +eval "set -- $( + printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" | + xargs -n1 | + sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' | + tr '\n' ' ' + )" '"$@"' + +exec "$JAVACMD" "$@" diff --git a/gradlew.bat b/gradlew.bat new file mode 100644 index 0000000..107acd3 --- /dev/null +++ b/gradlew.bat @@ -0,0 +1,89 @@ +@rem +@rem Copyright 2015 the original author or authors. +@rem +@rem Licensed under the Apache License, Version 2.0 (the "License"); +@rem you may not use this file except in compliance with the License. +@rem You may obtain a copy of the License at +@rem +@rem https://www.apache.org/licenses/LICENSE-2.0 +@rem +@rem Unless required by applicable law or agreed to in writing, software +@rem distributed under the License is distributed on an "AS IS" BASIS, +@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +@rem See the License for the specific language governing permissions and +@rem limitations under the License. +@rem + +@if "%DEBUG%" == "" @echo off +@rem ########################################################################## +@rem +@rem Gradle startup script for Windows +@rem +@rem ########################################################################## + +@rem Set local scope for the variables with windows NT shell +if "%OS%"=="Windows_NT" setlocal + +set DIRNAME=%~dp0 +if "%DIRNAME%" == "" set DIRNAME=. +set APP_BASE_NAME=%~n0 +set APP_HOME=%DIRNAME% + +@rem Resolve any "." and ".." in APP_HOME to make it shorter. +for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi + +@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m" + +@rem Find java.exe +if defined JAVA_HOME goto findJavaFromJavaHome + +set JAVA_EXE=java.exe +%JAVA_EXE% -version >NUL 2>&1 +if "%ERRORLEVEL%" == "0" goto execute + +echo. +echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. +echo. +echo Please set the JAVA_HOME variable in your environment to match the +echo location of your Java installation. + +goto fail + +:findJavaFromJavaHome +set JAVA_HOME=%JAVA_HOME:"=% +set JAVA_EXE=%JAVA_HOME%/bin/java.exe + +if exist "%JAVA_EXE%" goto execute + +echo. +echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% +echo. +echo Please set the JAVA_HOME variable in your environment to match the +echo location of your Java installation. + +goto fail + +:execute +@rem Setup the command line + +set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar + + +@rem Execute Gradle +"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %* + +:end +@rem End local scope for the variables with windows NT shell +if "%ERRORLEVEL%"=="0" goto mainEnd + +:fail +rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of +rem the _cmd.exe /c_ return code! +if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 +exit /b 1 + +:mainEnd +if "%OS%"=="Windows_NT" endlocal + +:omega diff --git a/mainNotebook.ipynb b/mainNotebook.ipynb new file mode 100644 index 0000000..0803187 --- /dev/null +++ b/mainNotebook.ipynb @@ -0,0 +1,157 @@ +{ + "cells": [ + { + "metadata": { + "collapsed": true, + "ExecuteTime": { + "end_time": "2025-01-09T19:14:31.545333Z", + "start_time": "2025-01-09T19:14:29.548224Z" + } + }, + "cell_type": "code", + "source": [ + "USE {\n", + " dependencies(\"org.xerial:sqlite-jdbc:3.47.1.0\")\n", + "}\n", + "\n", + "%use dataframe" + ], + "outputs": [], + "execution_count": 1 + }, + { + "metadata": { + "ExecuteTime": { + "end_time": "2025-01-09T19:14:34.034594Z", + "start_time": "2025-01-09T19:14:33.213046Z" + } + }, + "cell_type": "code", + "source": [ + "import java.sql.DriverManager\n", + "import java.nio.file.Paths\n", + "\n", + "println(Paths.get(\"\").toAbsolutePath().toString())\n", + "val connection = DriverManager.getConnection(\"jdbc:sqlite:example.db\")\n", + "\n", + "val people = DataFrame.readSqlTable(connection, \"people\")\n", + "println(people.columnNames())\n", + "println(people.columnTypes())\n", + "\n" + ], + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "/Users/julienlengrand-lambert/Developer/kotlin-sqlite-dataframe\n", + "[name, is_active, has_subscription, is_verified]\n", + "[kotlin.String, kotlin.Boolean, kotlin.Boolean?, kotlin.Boolean?]\n" + ] + } + ], + "execution_count": 2 + }, + { + "metadata": { + "ExecuteTime": { + "end_time": "2025-01-09T19:14:36.741813Z", + "start_time": "2025-01-09T19:14:36.645384Z" + } + }, + "cell_type": "code", + "source": [ + "\n", + "println(people[2].is_active) //-> Compilation error \"Unresolved reference: is_active\"\n", + "println(people[2][\"is_active\"])\n", + "println(people[2][\"has_subscription\"])" + ], + "outputs": [ + { + "ename": "java.lang.ClassCastException", + "evalue": "class java.lang.Integer cannot be cast to class java.lang.Boolean (java.lang.Integer and java.lang.Boolean are in module java.base of loader 'bootstrap')", + "output_type": "error", + "traceback": [ + "java.lang.ClassCastException: class java.lang.Integer cannot be cast to class java.lang.Boolean (java.lang.Integer and java.lang.Boolean are in module java.base of loader 'bootstrap')", + "\tat Line_9_jupyter._DataFrameType_is_active(Line_9.jupyter.kts:7) at Cell In[0], line 7", + "\tat Line_11_jupyter.(Line_11.jupyter.kts:2) at Cell In[3], line 2", + "\tat java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62)", + "\tat java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:502)", + "\tat java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:486)", + "\tat kotlin.script.experimental.jvm.BasicJvmScriptEvaluator.evalWithConfigAndOtherScriptsResults(BasicJvmScriptEvaluator.kt:122)", + "\tat kotlin.script.experimental.jvm.BasicJvmScriptEvaluator.invoke$suspendImpl(BasicJvmScriptEvaluator.kt:48)", + "\tat kotlin.script.experimental.jvm.BasicJvmScriptEvaluator.invoke(BasicJvmScriptEvaluator.kt)", + "\tat kotlin.script.experimental.jvm.BasicJvmReplEvaluator.eval(BasicJvmReplEvaluator.kt:49)", + "\tat org.jetbrains.kotlinx.jupyter.repl.impl.InternalEvaluatorImpl$eval$resultWithDiagnostics$1.invokeSuspend(InternalEvaluatorImpl.kt:137)", + "\tat kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)", + "\tat kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:104)", + "\tat kotlinx.coroutines.EventLoopImplBase.processNextEvent(EventLoop.common.kt:277)", + "\tat kotlinx.coroutines.BlockingCoroutine.joinBlocking(Builders.kt:95)", + "\tat kotlinx.coroutines.BuildersKt__BuildersKt.runBlocking(Builders.kt:69)", + "\tat kotlinx.coroutines.BuildersKt.runBlocking(Unknown Source)", + "\tat kotlinx.coroutines.BuildersKt__BuildersKt.runBlocking$default(Builders.kt:48)", + "\tat kotlinx.coroutines.BuildersKt.runBlocking$default(Unknown Source)", + "\tat org.jetbrains.kotlinx.jupyter.repl.impl.InternalEvaluatorImpl.eval(InternalEvaluatorImpl.kt:137)", + "\tat org.jetbrains.kotlinx.jupyter.repl.impl.CellExecutorImpl$execute$1$result$1.invoke(CellExecutorImpl.kt:80)", + "\tat org.jetbrains.kotlinx.jupyter.repl.impl.CellExecutorImpl$execute$1$result$1.invoke(CellExecutorImpl.kt:78)", + "\tat org.jetbrains.kotlinx.jupyter.repl.impl.ReplForJupyterImpl.withHost(ReplForJupyterImpl.kt:774)", + "\tat org.jetbrains.kotlinx.jupyter.repl.impl.CellExecutorImpl.execute-L4Nmkdk(CellExecutorImpl.kt:78)", + "\tat org.jetbrains.kotlinx.jupyter.repl.execution.CellExecutor$DefaultImpls.execute-L4Nmkdk$default(CellExecutor.kt:13)", + "\tat org.jetbrains.kotlinx.jupyter.repl.impl.ReplForJupyterImpl.evaluateUserCode-wNURfNM(ReplForJupyterImpl.kt:596)", + "\tat org.jetbrains.kotlinx.jupyter.repl.impl.ReplForJupyterImpl.evalExImpl(ReplForJupyterImpl.kt:454)", + "\tat org.jetbrains.kotlinx.jupyter.repl.impl.ReplForJupyterImpl.access$evalExImpl(ReplForJupyterImpl.kt:141)", + "\tat org.jetbrains.kotlinx.jupyter.repl.impl.ReplForJupyterImpl$evalEx$1.invoke(ReplForJupyterImpl.kt:447)", + "\tat org.jetbrains.kotlinx.jupyter.repl.impl.ReplForJupyterImpl$evalEx$1.invoke(ReplForJupyterImpl.kt:446)", + "\tat org.jetbrains.kotlinx.jupyter.repl.impl.ReplForJupyterImpl.withEvalContext(ReplForJupyterImpl.kt:427)", + "\tat org.jetbrains.kotlinx.jupyter.repl.impl.ReplForJupyterImpl.evalEx(ReplForJupyterImpl.kt:446)", + "\tat org.jetbrains.kotlinx.jupyter.messaging.IdeCompatibleMessageRequestProcessor$processExecuteRequest$1$response$1$1.invoke(IdeCompatibleMessageRequestProcessor.kt:171)", + "\tat org.jetbrains.kotlinx.jupyter.messaging.IdeCompatibleMessageRequestProcessor$processExecuteRequest$1$response$1$1.invoke(IdeCompatibleMessageRequestProcessor.kt:170)", + "\tat org.jetbrains.kotlinx.jupyter.streams.BlockingSubstitutionEngine.withDataSubstitution(SubstitutionEngine.kt:70)", + "\tat org.jetbrains.kotlinx.jupyter.streams.StreamSubstitutionManager.withSubstitutedStreams(StreamSubstitutionManager.kt:118)", + "\tat org.jetbrains.kotlinx.jupyter.messaging.IdeCompatibleMessageRequestProcessor.withForkedIn(IdeCompatibleMessageRequestProcessor.kt:347)", + "\tat org.jetbrains.kotlinx.jupyter.messaging.IdeCompatibleMessageRequestProcessor.access$withForkedIn(IdeCompatibleMessageRequestProcessor.kt:67)", + "\tat org.jetbrains.kotlinx.jupyter.messaging.IdeCompatibleMessageRequestProcessor$evalWithIO$1$1.invoke(IdeCompatibleMessageRequestProcessor.kt:361)", + "\tat org.jetbrains.kotlinx.jupyter.streams.BlockingSubstitutionEngine.withDataSubstitution(SubstitutionEngine.kt:70)", + "\tat org.jetbrains.kotlinx.jupyter.streams.StreamSubstitutionManager.withSubstitutedStreams(StreamSubstitutionManager.kt:118)", + "\tat org.jetbrains.kotlinx.jupyter.messaging.IdeCompatibleMessageRequestProcessor.withForkedErr(IdeCompatibleMessageRequestProcessor.kt:336)", + "\tat org.jetbrains.kotlinx.jupyter.messaging.IdeCompatibleMessageRequestProcessor.access$withForkedErr(IdeCompatibleMessageRequestProcessor.kt:67)", + "\tat org.jetbrains.kotlinx.jupyter.messaging.IdeCompatibleMessageRequestProcessor$evalWithIO$1.invoke(IdeCompatibleMessageRequestProcessor.kt:360)", + "\tat org.jetbrains.kotlinx.jupyter.streams.BlockingSubstitutionEngine.withDataSubstitution(SubstitutionEngine.kt:70)", + "\tat org.jetbrains.kotlinx.jupyter.streams.StreamSubstitutionManager.withSubstitutedStreams(StreamSubstitutionManager.kt:118)", + "\tat org.jetbrains.kotlinx.jupyter.messaging.IdeCompatibleMessageRequestProcessor.withForkedOut(IdeCompatibleMessageRequestProcessor.kt:328)", + "\tat org.jetbrains.kotlinx.jupyter.messaging.IdeCompatibleMessageRequestProcessor.evalWithIO(IdeCompatibleMessageRequestProcessor.kt:359)", + "\tat org.jetbrains.kotlinx.jupyter.messaging.IdeCompatibleMessageRequestProcessor$processExecuteRequest$1$response$1.invoke(IdeCompatibleMessageRequestProcessor.kt:170)", + "\tat org.jetbrains.kotlinx.jupyter.messaging.IdeCompatibleMessageRequestProcessor$processExecuteRequest$1$response$1.invoke(IdeCompatibleMessageRequestProcessor.kt:169)", + "\tat org.jetbrains.kotlinx.jupyter.execution.JupyterExecutorImpl$Task.execute(JupyterExecutorImpl.kt:41)", + "\tat org.jetbrains.kotlinx.jupyter.execution.JupyterExecutorImpl$executorThread$1.invoke(JupyterExecutorImpl.kt:81)", + "\tat org.jetbrains.kotlinx.jupyter.execution.JupyterExecutorImpl$executorThread$1.invoke(JupyterExecutorImpl.kt:79)", + "\tat kotlin.concurrent.ThreadsKt$thread$thread$1.run(Thread.kt:30)", + "", + "java.lang.ClassCastException: class java.lang.Integer cannot be cast to class java.lang.Boolean (java.lang.Integer and java.lang.Boolean are in module java.base of loader 'bootstrap')", + "at Cell In[0], line 7", + "" + ] + } + ], + "execution_count": 3 + } + ], + "metadata": { + "kernelspec": { + "display_name": "Kotlin", + "language": "kotlin", + "name": "kotlin" + }, + "language_info": { + "name": "kotlin", + "version": "1.9.23", + "mimetype": "text/x-kotlin", + "file_extension": ".kt", + "pygments_lexer": "kotlin", + "codemirror_mode": "text/x-kotlin", + "nbconvert_exporter": "" + } + }, + "nbformat": 4, + "nbformat_minor": 0 +} diff --git a/sample.sql b/sample.sql new file mode 100755 index 0000000..1f8e889 --- /dev/null +++ b/sample.sql @@ -0,0 +1,18 @@ +-- Create a SQLite database and table +CREATE TABLE people ( + name TEXT NOT NULL, + is_active BOOLEAN NOT NULL, + has_subscription BOOLEAN, + is_verified BOOLEAN +); + +-- Insert some sample data +INSERT INTO people (name, is_active, has_subscription, is_verified) VALUES + ('Alice', 1, NULL, 0), + ('Bob', 0, 1, NULL), + ('Charlie', 1, 0, 1), + ('Diana', 0, NULL, NULL), + ('Eve', 1, 1, 1); + +-- Select all data to verify +SELECT * FROM people; \ No newline at end of file diff --git a/settings.gradle.kts b/settings.gradle.kts new file mode 100644 index 0000000..cff64b6 --- /dev/null +++ b/settings.gradle.kts @@ -0,0 +1,5 @@ +plugins { + id("org.gradle.toolchains.foojay-resolver-convention") version "0.8.0" +} +rootProject.name = "kotlin-sqlite-dataframe" + diff --git a/src/main/kotlin/Main.kt b/src/main/kotlin/Main.kt new file mode 100644 index 0000000..3cc655a --- /dev/null +++ b/src/main/kotlin/Main.kt @@ -0,0 +1,19 @@ +package nl.lengrand + +import org.jetbrains.kotlinx.dataframe.DataFrame +import org.jetbrains.kotlinx.dataframe.io.* +import java.sql.DriverManager + +fun main() { + + val connection = DriverManager.getConnection("jdbc:sqlite:example.db") + + val people = DataFrame.readSqlTable(connection, "people") + println(people.columnNames()) + println(people.columnTypes()) + + +// println(people[2].is_active) -> Compilation error "Unresolved reference: is_active" + println(people[2]["is_active"]) + println(people[2]["has_subscription"]) +} \ No newline at end of file