[eclipselink-users] NPE using Embedded ids?

[konkere <emperor@xxxxxxxx>]

Caused by: java.lang.NullPointerException
        at org.eclipse.persistence.internal.jpa.metadata.accessors.objects.MetadataAnnotatedElement.setAnnotatedElement(MetadataAnnotatedElement.java:529)
        at org.eclipse.persistence.internal.jpa.metadata.accessors.objects.MetadataAnnotatedElement.(MetadataAnnotatedElement.java:84)
        at org.eclipse.persistence.internal.jpa.metadata.accessors.objects.MetadataClass.(MetadataClass.java:32)
        at org.eclipse.persistence.internal.jpa.metadata.accessors.objects.MetadataAnnotatedElement.isEmbedded(MetadataAnnotatedElement.java:353)
        at org.eclipse.persistence.internal.jpa.metadata.accessors.classes.ClassAccessor.buildAccessor(ClassAccessor.java:160)
        at org.eclipse.persistence.internal.jpa.metadata.accessors.classes.ClassAccessor.processAccessorMethods(ClassAccessor.java:509)
        at org.eclipse.persistence.internal.jpa.metadata.accessors.classes.ClassAccessor.processAccessors(ClassAccessor.java:582)
        at org.eclipse.persistence.internal.jpa.metadata.accessors.classes.EntityAccessor.process(EntityAccessor.java:483)
        at org.eclipse.persistence.internal.jpa.metadata.MetadataProcessor.processORMMetadata(MetadataProcessor.java:443)
        at org.eclipse.persistence.internal.jpa.deployment.PersistenceUnitProcessor.processORMetadata(PersistenceUnitProcessor.java:303)
        at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.predeploy(EntityManagerSetupImpl.java:830)

my entities are as simple as this:
@Entity
class A {
  APK id;

  @EmbeddedId
  APK getId(){...}
}

@Entity
class B {
  BPK id;

  @EmbeddedId
  BPK getId(){...}
}

@Embeddable
@MappedSuperclass
class APK {
//some @Basic properties here
}

@ Embeddable
class BPK extends APK{
//some other @Basic properties here
}

don't ask me why the PKs extend each other it just has to be like that ;).


i also saw an identical report on eclipselink @ dev.eclipse.org mailing list, so i wander if this is something known and has a workaround (or maybe some tips?)

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