0.39.1 breaks my application

When updating from 0.38.2 to 0.39.1 or .2 my application breaks.

When I’m trying to load one or more instances of the Farmer DAO from the Farmers DSL, this error occurs:

transaction {
    Farmer.findById("1")
}

java.lang.reflect.InvocationTargetException
	at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)
	at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499)
	at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:480)
	at kotlin.reflect.jvm.internal.calls.CallerImpl$Constructor.call(CallerImpl.kt:41)
	at kotlin.reflect.jvm.internal.KCallableImpl.call(KCallableImpl.kt:108)
	at org.jetbrains.exposed.dao.EntityClass$entityCtor$1.invoke(EntityClass.kt:32)
	at org.jetbrains.exposed.dao.EntityClass$entityCtor$1.invoke(EntityClass.kt:32)
	at org.jetbrains.exposed.dao.EntityClass.createInstance(EntityClass.kt:229)
	at org.jetbrains.exposed.dao.EntityClass.wrap(EntityClass.kt:233)
	at org.jetbrains.exposed.dao.EntityClass.wrapRow(EntityClass.kt:138)
	at org.jetbrains.exposed.dao.EntityClass$wrapRows$1.invoke(EntityClass.kt:125)
	at org.jetbrains.exposed.dao.EntityClass$wrapRows$1.invoke(EntityClass.kt:124)
	at org.jetbrains.exposed.sql.IterableExKt$mapLazy$1$iterator$1.next(IterableEx.kt:131)
	at kotlin.collections.CollectionsKt___CollectionsKt.firstOrNull(_Collections.kt:272)
	at org.jetbrains.exposed.dao.EntityClass.findById(EntityClass.kt:56)
	at org.jetbrains.exposed.dao.EntityClass.findById(EntityClass.kt:47)
	at nl.pindab0ter.eggbot.utilities.ScratchKt$main$2$1$1$1$result$1.invoke(Scratch.kt:24)
	at nl.pindab0ter.eggbot.utilities.ScratchKt$main$2$1$1$1$result$1.invoke(Scratch.kt:23)
	at org.jetbrains.exposed.sql.transactions.ThreadLocalTransactionManagerKt.inTopLevelTransaction$run(ThreadLocalTransactionManager.kt:189)
	at org.jetbrains.exposed.sql.transactions.ThreadLocalTransactionManagerKt.access$inTopLevelTransaction$run(ThreadLocalTransactionManager.kt:1)
	at org.jetbrains.exposed.sql.transactions.ThreadLocalTransactionManagerKt$inTopLevelTransaction$1.invoke(ThreadLocalTransactionManager.kt:215)
	at org.jetbrains.exposed.sql.transactions.ThreadLocalTransactionManagerKt.keepAndRestoreTransactionRefAfterRun(ThreadLocalTransactionManager.kt:223)
	at org.jetbrains.exposed.sql.transactions.ThreadLocalTransactionManagerKt.inTopLevelTransaction(ThreadLocalTransactionManager.kt:214)
	at org.jetbrains.exposed.sql.transactions.ThreadLocalTransactionManagerKt$transaction$1.invoke(ThreadLocalTransactionManager.kt:165)
	at org.jetbrains.exposed.sql.transactions.ThreadLocalTransactionManagerKt.keepAndRestoreTransactionRefAfterRun(ThreadLocalTransactionManager.kt:223)
	at org.jetbrains.exposed.sql.transactions.ThreadLocalTransactionManagerKt.transaction(ThreadLocalTransactionManager.kt:135)
	at org.jetbrains.exposed.sql.transactions.ThreadLocalTransactionManagerKt.transaction(ThreadLocalTransactionManager.kt:132)
	at nl.pindab0ter.eggbot.utilities.ScratchKt$main$2$1$1.invokeSuspend(Scratch.kt:23)
	at nl.pindab0ter.eggbot.utilities.ScratchKt$main$2$1$1.invoke(Scratch.kt)
	at nl.pindab0ter.eggbot.utilities.ScratchKt$main$2$1$1.invoke(Scratch.kt)
	at com.kotlindiscord.kord.extensions.builders.ExtensibleBotBuilder$HooksBuilder.runBeforeExtensionsAdded(ExtensibleBotBuilder.kt:942)
	at com.kotlindiscord.kord.extensions.builders.ExtensibleBotBuilder.build$suspendImpl(ExtensibleBotBuilder.kt:478)
	at com.kotlindiscord.kord.extensions.builders.ExtensibleBotBuilder$build$1.invokeSuspend(ExtensibleBotBuilder.kt)
	at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
	at kotlinx.coroutines.DispatchedTaskKt.resume(DispatchedTask.kt:178)
	at kotlinx.coroutines.DispatchedTaskKt.dispatch(DispatchedTask.kt:166)
	at kotlinx.coroutines.CancellableContinuationImpl.dispatchResume(CancellableContinuationImpl.kt:397)
	at kotlinx.coroutines.CancellableContinuationImpl.resumeImpl(CancellableContinuationImpl.kt:431)
	at kotlinx.coroutines.CancellableContinuationImpl.resumeImpl$default(CancellableContinuationImpl.kt:420)
	at kotlinx.coroutines.CancellableContinuationImpl.resumeWith(CancellableContinuationImpl.kt:328)
	at kotlinx.coroutines.ResumeOnCompletion.invoke(JobSupport.kt:1398)
	at kotlinx.coroutines.JobSupport.notifyCompletion(JobSupport.kt:1520)
	at kotlinx.coroutines.JobSupport.completeStateFinalization(JobSupport.kt:323)
	at kotlinx.coroutines.JobSupport.finalizeFinishingState(JobSupport.kt:240)
	at kotlinx.coroutines.JobSupport.continueCompleting(JobSupport.kt:935)
	at kotlinx.coroutines.JobSupport.access$continueCompleting(JobSupport.kt:27)
	at kotlinx.coroutines.JobSupport$ChildCompletion.invoke(JobSupport.kt:1155)
	at kotlinx.coroutines.JobSupport.notifyCompletion(JobSupport.kt:1520)
	at kotlinx.coroutines.JobSupport.completeStateFinalization(JobSupport.kt:323)
	at kotlinx.coroutines.JobSupport.finalizeFinishingState(JobSupport.kt:240)
	at kotlinx.coroutines.JobSupport.tryMakeCompletingSlowPath(JobSupport.kt:906)
	at kotlinx.coroutines.JobSupport.tryMakeCompleting(JobSupport.kt:863)
	at kotlinx.coroutines.JobSupport.makeCompletingOnce$kotlinx_coroutines_core(JobSupport.kt:828)
	at kotlinx.coroutines.AbstractCoroutine.resumeWith(AbstractCoroutine.kt:100)
	at kotlinx.coroutines.debug.internal.DebugProbesImpl$CoroutineOwner.resumeWith(DebugProbesImpl.kt:545)
	at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:46)
	at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106)
	at kotlinx.coroutines.internal.LimitedDispatcher.run(LimitedDispatcher.kt:42)
	at kotlinx.coroutines.scheduling.TaskImpl.run(Tasks.kt:95)
	at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:570)
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:750)
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:677)
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:664)
Caused by: java.lang.ExceptionInInitializerError
	at nl.pindab0ter.eggbot.model.database.Coop$Companion.<init>(Coop.kt:40)
	at nl.pindab0ter.eggbot.model.database.Coop$Companion.<init>(Coop.kt)
	at nl.pindab0ter.eggbot.model.database.Coop.<clinit>(Coop.kt:38)
	at nl.pindab0ter.eggbot.model.database.Farmer.<init>(Farmer.kt:30)
	... 65 more
Caused by: java.lang.NullPointerException: Parameter specified as non-null is null: method kotlin.text.StringsKt__StringsKt.substringAfter, parameter <this>
	at kotlin.text.StringsKt__StringsKt.substringAfter(Strings.kt)
	at kotlin.text.StringsKt__StringsKt.substringAfter$default(Strings.kt:456)
	at org.jetbrains.exposed.sql.Table.getTableNameWithoutScheme$exposed_core(Table.kt:334)
	at org.jetbrains.exposed.sql.Table$PrimaryKey.<init>(Table.kt:424)
	at org.jetbrains.exposed.dao.id.IntIdTable.<init>(IdTable.kt:43)
	at org.jetbrains.exposed.dao.id.IntIdTable.<init>(IdTable.kt:41)
	at nl.pindab0ter.eggbot.model.database.Coops.<init>(Coops.kt:8)
	at nl.pindab0ter.eggbot.model.database.Coops.<clinit>(Coops.kt)
	... 69 more

The error message doesn’t tell me what went wrong specifically. It’s not clear to me, at least.

Even though I’m not loading or using this relationship (no eager loading or calling it), it seems to originate in the Coops DSL, with the relation defined like this:

var coops by Coop via CoopFarmers

Unfortunately I can’t open source the code. So please let me know what more details I should provide.

The error occurs even when the coops table is completely empty. No non-nullable fields in Farmer are null.

With 3.8.2 this worked without a problem.

[Tapac]

I’ll close it just after all tests will pass on CI. The fix is on the way.

[Tapac]

I was able to reproduce the bug, will fix it with next release. As a workaround you can move table name into table declaration like:

object Farmers : IdTable<String>{"farmers") { ... }
object CoopFarmers : Table("coop_farmers")  { ... }

It should help