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Hello, does anyone tried to connect to SQLite in-m...
# exposed
s
Hello, does anyone tried to connect to SQLite in-memory storage using Exposed? I tried this but doesn’t works.
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Database.connect(
    url = "jdbc:sqlite::memory:",
    driver = "org.sqlite.JDBC"
)

TransactionManager.manager.defaultIsolationLevel = Connection.TRANSACTION_SERIALIZABLE
Follow the wiki and use 
Database.connect(“jdbc:sqlite:file:test?mode=memory&cache=shared”, “org.sqlite.JDBC”)
and doesn’t work either. Not sure what I missing? Any suggestions are appreciated. Thanks!
t
Did you get any exeption?
s
I use it inside a Ktor application. The application can start without any problem. But when I try to read/write from SQLite. It thrown exception and said SQL error or missing database:
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2021-02-27 00:33:41.151 [main] DEBUG Exposed - CREATE TABLE IF NOT EXISTS tasks (id INTEGER PRIMARY KEY AUTOINCREMENT, title VARCHAR(255) NOT NULL, completed BOOLEAN DEFAULT 0 NOT NULL)
2021-02-27 00:33:41.169 [main] INFO  Application - Responding at <http://0.0.0.0:8080>
2021-02-27 00:34:19.822 [eventLoopGroupProxy-4-2] DEBUG Exposed - SELECT tasks.id, tasks.title, tasks.completed FROM tasks ORDER BY tasks.id DESC
2021-02-27 00:34:19.824 [eventLoopGroupProxy-4-2] WARN  Exposed - Transaction attempt #0 failed: org.sqlite.SQLiteException: [SQLITE_ERROR] SQL error or missing database (no such table: tasks). Statement(s): SELECT tasks.id, tasks.title, tasks.completed FROM tasks ORDER BY tasks.id DESC
org.jetbrains.exposed.exceptions.ExposedSQLException: org.sqlite.SQLiteException: [SQLITE_ERROR] SQL error or missing database (no such table: tasks)
	at org.jetbrains.exposed.sql.statements.Statement.executeIn$exposed_core(Statement.kt:50)
	at org.jetbrains.exposed.sql.Transaction.exec(Transaction.kt:126)
	at org.jetbrains.exposed.sql.Transaction.exec(Transaction.kt:112)
	at org.jetbrains.exposed.sql.Query.iterator(Query.kt:212)
	at org.jetbrains.exposed.sql.IterableExKt$mapLazy$1.iterator(IterableEx.kt:129)
	at io.kraftsman.ApplicationKt$module$3$3$tasks$1.invoke(Application.kt:143)
	at io.kraftsman.ApplicationKt$module$3$3$tasks$1.invoke(Application.kt)
	at org.jetbrains.exposed.sql.transactions.ThreadLocalTransactionManagerKt$inTopLevelTransaction$1.invoke(ThreadLocalTransactionManager.kt:170)
	at org.jetbrains.exposed.sql.transactions.ThreadLocalTransactionManagerKt$inTopLevelTransaction$2.invoke(ThreadLocalTransactionManager.kt:211)
	at org.jetbrains.exposed.sql.transactions.ThreadLocalTransactionManagerKt.keepAndRestoreTransactionRefAfterRun(ThreadLocalTransactionManager.kt:219)
	at org.jetbrains.exposed.sql.transactions.ThreadLocalTransactionManagerKt.inTopLevelTransaction(ThreadLocalTransactionManager.kt:210)
	at org.jetbrains.exposed.sql.transactions.ThreadLocalTransactionManagerKt$transaction$1.invoke(ThreadLocalTransactionManager.kt:148)
	at org.jetbrains.exposed.sql.transactions.ThreadLocalTransactionManagerKt.keepAndRestoreTransactionRefAfterRun(ThreadLocalTransactionManager.kt:219)
	at org.jetbrains.exposed.sql.transactions.ThreadLocalTransactionManagerKt.transaction(ThreadLocalTransactionManager.kt:120)
	at org.jetbrains.exposed.sql.transactions.ThreadLocalTransactionManagerKt.transaction(ThreadLocalTransactionManager.kt:118)
	at org.jetbrains.exposed.sql.transactions.ThreadLocalTransactionManagerKt.transaction$default(ThreadLocalTransactionManager.kt:117)
	at io.kraftsman.ApplicationKt$module$3$3.invokeSuspend(Application.kt:53)
	at io.kraftsman.ApplicationKt$module$3$3.invoke(Application.kt)
	at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:243)
	at io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:113)
	at io.ktor.util.pipeline.SuspendFunctionGun.execute(SuspendFunctionGun.kt:133)
	at io.ktor.util.pipeline.Pipeline.execute(Pipeline.kt:79)
	at io.ktor.routing.Routing.executeResult(Routing.kt:155)
	at io.ktor.routing.Routing.interceptor(Routing.kt:39)
	at io.ktor.routing.Routing$Feature$install$1.invokeSuspend(Routing.kt:107)
	at io.ktor.routing.Routing$Feature$install$1.invoke(Routing.kt)
	at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:243)
	at io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:113)
	at io.ktor.features.ContentNegotiation$Feature$install$1.invokeSuspend(ContentNegotiation.kt:110)
	at io.ktor.features.ContentNegotiation$Feature$install$1.invoke(ContentNegotiation.kt)
	at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:243)
	at io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:113)
	at io.ktor.util.pipeline.SuspendFunctionGun.execute(SuspendFunctionGun.kt:133)
	at io.ktor.util.pipeline.Pipeline.execute(Pipeline.kt:79)
	at io.ktor.server.engine.DefaultEnginePipelineKt$defaultEnginePipeline$2.invokeSuspend(DefaultEnginePipeline.kt:124)
	at io.ktor.server.engine.DefaultEnginePipelineKt$defaultEnginePipeline$2.invoke(DefaultEnginePipeline.kt)
	at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:243)
	at io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:113)
	at io.ktor.util.pipeline.SuspendFunctionGun.execute(SuspendFunctionGun.kt:133)
	at io.ktor.util.pipeline.Pipeline.execute(Pipeline.kt:79)
	at io.ktor.server.netty.NettyApplicationCallHandler$handleRequest$1.invokeSuspend(NettyApplicationCallHandler.kt:122)
	at io.ktor.server.netty.NettyApplicationCallHandler$handleRequest$1.invoke(NettyApplicationCallHandler.kt)
	at kotlinx.coroutines.intrinsics.UndispatchedKt.startCoroutineUndispatched(Undispatched.kt:55)
	at kotlinx.coroutines.BuildersKt__Builders_commonKt.startCoroutineImpl(Builders.common.kt:194)
	at kotlinx.coroutines.BuildersKt.startCoroutineImpl(Unknown Source)
	at kotlinx.coroutines.AbstractCoroutine.start(AbstractCoroutine.kt:145)
	at kotlinx.coroutines.BuildersKt__Builders_commonKt.launch(Builders.common.kt:56)
	at kotlinx.coroutines.BuildersKt.launch(Unknown Source)
	at io.ktor.server.netty.NettyApplicationCallHandler.handleRequest(NettyApplicationCallHandler.kt:43)
	at io.ktor.server.netty.NettyApplicationCallHandler.channelRead(NettyApplicationCallHandler.kt:34)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
	at io.netty.channel.AbstractChannelHandlerContext.access$600(AbstractChannelHandlerContext.java:61)
	at io.netty.channel.AbstractChannelHandlerContext$7.run(AbstractChannelHandlerContext.java:370)
	at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:164)
	at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:472)
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:500)
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
	at io.ktor.server.netty.EventLoopGroupProxy$Companion$create$factory$1$1.run(NettyApplicationEngine.kt:227)
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
	at java.base/java.lang.Thread.run(Thread.java:834)
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