The attached test case produces a ClassCastException when run (mvn test) with enhancement enabled. It runs fine without.
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2016-07-22 23:01:26,237 DEBUG org.hibernate.SQL - insert into Thing (id) values (null)
2016-07-22 23:01:26,261 DEBUG org.hibernate.SQL - insert into SomeEntity (id, lastChangedAt, parent_id, version) values (null, ?, ?, ?)
Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 4 sec <<< FAILURE!
test(eu.pinske.test.ThingTest) Time elapsed: 3.782 sec <<< ERROR!
java.lang.ClassCastException: java.util.HashSet cannot be cast to org.hibernate.collection.spi.PersistentCollection
at org.hibernate.event.internal.FlushVisitor.processCollection(FlushVisitor.java:39)
at org.hibernate.event.internal.AbstractVisitor.processValue(AbstractVisitor.java:104)
at org.hibernate.event.internal.AbstractVisitor.processValue(AbstractVisitor.java:65)
at org.hibernate.event.internal.AbstractVisitor.processEntityPropertyValues(AbstractVisitor.java:59)
at org.hibernate.event.internal.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:155)
at org.hibernate.event.internal.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:216)
at org.hibernate.event.internal.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:85)
at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:38)
at org.hibernate.internal.SessionImpl.flush(SessionImpl.java:1397)
at eu.pinske.test.ThingTest.test(ThingTest.java:30)
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The exception seems to only occur in these particular circumstances:
* the entity uses a PreUpdate-hook
* the entity has a Version-column
* one collections collection is created before persist, another one after persist
Unfortunately I was not able to narrow it down further. |
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