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ClassCastException on EntityManager.getCriteriaBuilder() [message #662474]

Wed, 30 March 2011 14:11

Eclipse User

Hi,

when calling EntitiyManager.getCriteriaBuilder() I get a ClassCastException:
java.lang.ClassCastException: org.eclipse.persistence.internal.jpa.metamodel.EmbeddableTyp eImpl cannot be cast to javax.persistence.metamodel.IdentifiableType

I tried EclipseLink 2.1.2 and 2.2.0, both the same behaviour.
Maybe my objects / annotations are wrong (maybe not?) - I don't know how to get more information. The exception text doesn't help me in any way and the stacktrace points directly into EclipseLink internals:

2.1.2:

java.lang.ClassCastException: org.eclipse.persistence.internal.jpa.metamodel.EmbeddableTypeImpl cannot be cast to javax.persistence.metamodel.IdentifiableType
	at org.eclipse.persistence.internal.jpa.metamodel.MetamodelImpl.initialize(MetamodelImpl.java:377)
	at org.eclipse.persistence.internal.jpa.metamodel.MetamodelImpl.<init>(MetamodelImpl.java:101)
	at org.eclipse.persistence.internal.jpa.metamodel.MetamodelImpl.<init>(MetamodelImpl.java:120)
	at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.getMetamodel(EntityManagerSetupImpl.java:2005)
	at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.getMetamodel(EntityManagerFactoryImpl.java:511)
	at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.getCriteriaBuilder(EntityManagerFactoryImpl.java:485)
	at org.eclipse.persistence.internal.jpa.EntityManagerImpl.getCriteriaBuilder(EntityManagerImpl.java:2129)
	at xxx.jpa.JPAManager.getObjectListInternal(JPAManager.java:230)

2.2.0:

java.lang.ClassCastException: org.eclipse.persistence.internal.jpa.metamodel.EmbeddableTypeImpl cannot be cast to javax.persistence.metamodel.IdentifiableType
	at org.eclipse.persistence.internal.jpa.metamodel.MetamodelImpl.initialize(MetamodelImpl.java:410)
	at org.eclipse.persistence.internal.jpa.metamodel.MetamodelImpl.<init>(MetamodelImpl.java:109)
	at org.eclipse.persistence.internal.jpa.metamodel.MetamodelImpl.<init>(MetamodelImpl.java:128)
	at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.getMetamodel(EntityManagerSetupImpl.java:2179)
	at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.getMetamodel(EntityManagerFactoryImpl.java:532)
	at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.getCriteriaBuilder(EntityManagerFactoryImpl.java:506)
	at org.eclipse.persistence.internal.jpa.EntityManagerImpl.getCriteriaBuilder(EntityManagerImpl.java:2136)
	at xxx.jpa.JPAManager.getObjectListInternal(JPAManager.java:230)

Can somebody help me?

Thanks.

Re: ClassCastException on EntityManager.getCriteriaBuilder() [message #662696 is a reply to message #662474]

Thu, 31 March 2011 11:21

Eclipse User

My guess is that you have an @Entity subclasses from an @Embeddable. I don't think this is valid, but you should be getting a better error, so please log and bug and include your model.

If you don't have this, please include your model, or check for other odd inheritance usages.

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