java.lang.ClassCastException

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  • Hello, Following my observations from [link |https://forum.hibernate.org/viewtopic.php?p=2490445#p2490445] I open this ticket as instructed on same topic. Basically I have 2 Hibernate persistent entities Company, Manager ("has a" relationship). Manager.resume is annotated with (@Basic(fetch = FetchType.LAZY)). Both entity classes are compile time instrumented by org.hibernate.orm.tooling:hibernate-enhance-maven-plugin. At runtime during the transactional/Hibernate session scope: - create new instance Company/Manager - assemble them (they are still transient) - try to call session.merge(company). Following this I get the error below. The use case can be reproduced with the attached test case. java.lang.ClassCastException: org.hibernate.bytecode.enhance.spi.LazyPropertyInitializer$1 cannot be cast to [B at org.hibernate.type.descriptor.java.PrimitiveByteArrayTypeDescriptor.areEqual(PrimitiveByteArrayTypeDescriptor.java:26) at org.hibernate.type.AbstractStandardBasicType.isEqual(AbstractStandardBasicType.java:195) at org.hibernate.type.AbstractStandardBasicType.getReplacement(AbstractStandardBasicType.java:75) at org.hibernate.type.AbstractStandardBasicType.replace(AbstractStandardBasicType.java:361) at org.hibernate.type.TypeHelper.replace(TypeHelper.java:211) at org.hibernate.event.internal.DefaultMergeEventListener.copyValues(DefaultMergeEventListener.java:430) at org.hibernate.event.internal.DefaultMergeEventListener.entityIsTransient(DefaultMergeEventListener.java:232) at org.hibernate.event.internal.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:172) at org.hibernate.internal.SessionImpl.fireMerge(SessionImpl.java:881) at org.hibernate.internal.SessionImpl.merge(SessionImpl.java:848) at org.hibernate.engine.spi.CascadingActions$6.cascade(CascadingActions.java:261) at org.hibernate.engine.internal.Cascade.cascadeToOne(Cascade.java:391) at org.hibernate.engine.internal.Cascade.cascadeAssociation(Cascade.java:316) at org.hibernate.engine.internal.Cascade.cascadeProperty(Cascade.java:155) at org.hibernate.engine.internal.Cascade.cascade(Cascade.java:104) at org.hibernate.event.internal.AbstractSaveEventListener.cascadeAfterSave(AbstractSaveEventListener.java:445) at org.hibernate.event.internal.DefaultMergeEventListener.entityIsTransient(DefaultMergeEventListener.java:238) at org.hibernate.event.internal.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:172) at org.hibernate.event.internal.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:68) at org.hibernate.internal.SessionImpl.fireMerge(SessionImpl.java:857) at org.hibernate.internal.SessionImpl.merge(SessionImpl.java:838) at org.hibernate.internal.SessionImpl.merge(SessionImpl.java:843) at org.hibernate.bugs.ORMUnitTestCase.hhh123Test(ORMUnitTestCase.java:88) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44) at org.hibernate.testing.junit4.ExtendedFrameworkMethod.invokeExplosively(ExtendedFrameworkMethod.java:45) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26) at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27) at org.junit.internal.runners.statements.FailOnTimeout$StatementThread.run(FailOnTimeout.java:74) As I said in the post, by debugging and checking your github fixes for hibernate 4.x on same error: Maybe a solution would be to modify the following method ? org.hibernate.type.TypeHelper.replace(Object[], Object[], Type[], SharedSessionContractImplementor, Object, Map, ForeignKeyDirection)) by adding a condition like you did when fixing the other Code: else if ( target[i] == LazyPropertyInitializer.UNFETCHED_PROPERTY ) { if ( types[i].isMutable() ) { copied[i] = types[i].deepCopy( original[i], session.getFactory() ); } else { copied[i] = original[i]; } } just as you did with the other one: org.hibernate.type.TypeHelper.replace(Object[], Object[], Type[], SharedSessionContractImplementor, Object, Map) in pull 891 https://github.com/hibernate/hibernate-orm/pull/891/files I think this method is called for MyEntity properties (org.hibernate.type.TypeHelper.replace(Object[], Object[], Type[], SharedSessionContractImplementor, Object, Map, ForeignKeyDirection))) because I am persisting MyEntity indirectly through a parent entity MyContainerEntity (one-to-one relation, MyEntity being the owning side). So the particularity of this case is that that a child entity fails to get merged through a parent entity. The child entity is compile time instrumented and has a LAZY Basic attribute/property. Thanks in advance for looking
    via by Mike G,
    • java.lang.ClassCastException: org.hibernate.bytecode.enhance.spi.LazyPropertyInitializer$1 cannot be cast to [B at org.hibernate.type.descriptor.java.PrimitiveByteArrayTypeDescriptor.areEqual(PrimitiveByteArrayTypeDescriptor.java:26) at org.hibernate.type.AbstractStandardBasicType.isEqual(AbstractStandardBasicType.java:195) at org.hibernate.type.AbstractStandardBasicType.getReplacement(AbstractStandardBasicType.java:75) at org.hibernate.type.AbstractStandardBasicType.replace(AbstractStandardBasicType.java:361) at org.hibernate.type.TypeHelper.replace(TypeHelper.java:211) at org.hibernate.event.internal.DefaultMergeEventListener.copyValues(DefaultMergeEventListener.java:430) at org.hibernate.event.internal.DefaultMergeEventListener.entityIsTransient(DefaultMergeEventListener.java:232) at org.hibernate.event.internal.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:172) at org.hibernate.internal.SessionImpl.fireMerge(SessionImpl.java:881) at org.hibernate.internal.SessionImpl.merge(SessionImpl.java:848) at org.hibernate.engine.spi.CascadingActions$6.cascade(CascadingActions.java:261) at org.hibernate.engine.internal.Cascade.cascadeToOne(Cascade.java:391) at org.hibernate.engine.internal.Cascade.cascadeAssociation(Cascade.java:316) at org.hibernate.engine.internal.Cascade.cascadeProperty(Cascade.java:155) at org.hibernate.engine.internal.Cascade.cascade(Cascade.java:104) at org.hibernate.event.internal.AbstractSaveEventListener.cascadeAfterSave(AbstractSaveEventListener.java:445) at org.hibernate.event.internal.DefaultMergeEventListener.entityIsTransient(DefaultMergeEventListener.java:238) at org.hibernate.event.internal.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:172) at org.hibernate.event.internal.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:68) at org.hibernate.internal.SessionImpl.fireMerge(SessionImpl.java:857) at org.hibernate.internal.SessionImpl.merge(SessionImpl.java:838) at org.hibernate.internal.SessionImpl.merge(SessionImpl.java:843) at org.hibernate.bugs.ORMUnitTestCase.hhh123Test(ORMUnitTestCase.java:88) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44) at org.hibernate.testing.junit4.ExtendedFrameworkMethod.invokeExplosively(ExtendedFrameworkMethod.java:45) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26) at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27) at org.junit.internal.runners.statements.FailOnTimeout$StatementThread.run(FailOnTimeout.java:74)
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