kotlin-sqlite-dataframe/mainNotebook.ipynb

{
 "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.<init>(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
  }
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