hibernate-reactive: Example fails with ORM 5.4.24

Example of one of the logs using org.hibernate:hibernate-core:5.5.0-SNAPSHOT:20201117.201048-196:

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[ERROR] failed to execute statement [select author0_.id as id1_0_0_, author0_.name as name2_0_0_ from authors author0_ where author0_.id in (?,?)]
[ERROR] could not load an entity batch: [org.hibernate.example.reactive.Author#<1, 3>]
java.util.concurrent.CompletionException: org.hibernate.LazyInitializationException: Collection cannot be initialized: org.hibernate.example.reactive.Author.books
	at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:273) ~[?:1.8.0_275]
	at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:280) ~[?:1.8.0_275]
	at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:673) ~[?:1.8.0_275]
	at java.util.concurrent.CompletableFuture.uniAcceptStage(CompletableFuture.java:683) ~[?:1.8.0_275]
	at java.util.concurrent.CompletableFuture.thenAccept(CompletableFuture.java:2010) ~[?:1.8.0_275]
	at java.util.concurrent.CompletableFuture.thenAccept(CompletableFuture.java:110) ~[?:1.8.0_275]
	at org.hibernate.reactive.loader.ReactiveLoaderBasedResultSetProcessor.reactiveInitializeEntitiesAndCollections(ReactiveLoaderBasedResultSetProcessor.java:150) ~[hibernate-reactive-core-1.0.0-SNAPSHOT.jar:1.0.0-SNAPSHOT]
	at org.hibernate.reactive.loader.ReactiveLoaderBasedResultSetProcessor.reactiveExtractResults(ReactiveLoaderBasedResultSetProcessor.java:83) ~[hibernate-reactive-core-1.0.0-SNAPSHOT.jar:1.0.0-SNAPSHOT]
Error: Exception in thread "main" java.util.concurrent.CompletionException: org.hibernate.LazyInitializationException: Collection cannot be initialized: org.hibernate.example.reactive.Author.books
	at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:273)
	at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:280)
	at org.hibernate.reactive.loader.ReactiveLoader.reactiveProcessResultSet(ReactiveLoader.java:123) ~[hibernate-reactive-core-1.0.0-SNAPSHOT.jar:1.0.0-SNAPSHOT]
	at org.hibernate.reactive.loader.ReactiveLoader.lambda$doReactiveQueryAndInitializeNonLazyCollections$0(ReactiveLoader.java:71) ~[hibernate-reactive-core-1.0.0-SNAPSHOT.jar:1.0.0-SNAPSHOT]
	at java.util.concurrent.CompletableFuture.uniCompose(CompletableFuture.java:966) ~[?:1.8.0_275]
	at java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:940) ~[?:1.8.0_275]
	at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:488) ~[?:1.8.0_275]
	at java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:1975) ~[?:1.8.0_275]

...

Caused by: org.hibernate.LazyInitializationException: Collection cannot be initialized: org.hibernate.example.reactive.Author.books
	at org.hibernate.reactive.session.impl.ReactiveSessionImpl.initializeCollection(ReactiveSessionImpl.java:320)
	at org.hibernate.collection.internal.AbstractPersistentCollection$4.doWork(AbstractPersistentCollection.java:589)
	at org.hibernate.collection.internal.AbstractPersistentCollection.withTemporarySessionIfNeeded(AbstractPersistentCollection.java:264)
	at org.hibernate.collection.internal.AbstractPersistentCollection.initialize(AbstractPersistentCollection.java:585)
	at org.hibernate.collection.internal.AbstractPersistentCollection.read(AbstractPersistentCollection.java:149)

About this issue

Original URL
State: closed
Created 4 years ago
Comments: 37 (31 by maintainers)

Most upvoted comments

Here a PR that should fix these issues: https://github.com/hibernate/hibernate-orm/pull/3664

beikov on Nov 25, 2020

So, yes. The problem is the dirty checking of the collection when byte code enhancements are enabled. I don’t know why it was working before. Probably, this bug in ORM was hiding the problem and now that it’s fixed we see it.

DavideD on Nov 24, 2020

I’m working on a test case. Hopefully I will be able to confirm this soon enough.

It makes sense though because only the example fails and it is the only place where we enable the bytecode enhancements

DavideD on Nov 23, 2020