Hi guys,

I am using Annotations CR1, EntityManager CR1, and Hibernate 3.2 CR2 and ran into some troubles with polymorphic associations..

I have the following class Xyz, which is a super class for a couple of entity classes:
@MappedSuperclass
public abstract class Xyz{...}

The following association to Xyz does not work (see exception below)
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumns({...})
private Xyz test;

Each entity is annotated with
@Inheritance(strategy = InheritanceType.TABLE_PER_CLASS).

I am look forward to any help! Thank you!


Here's the execption:

javax.persistence.PersistenceException: org.hibernate.AnnotationException: @OneToOne or @ManyToOne on play.abc.test references an unknown entity: play.Xyz
at org.hibernate.ejb.Ejb3Configuration.createEntityManagerFactory(Ejb3Configuration.java:196)
at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:114)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:37)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:27)
...

Caused by: org.hibernate.AnnotationException: @OneToOne or @ManyToOne on play.abc.test references an unknown entity: play.Xyz
at org.hibernate.cfg.FkSecondPass.doSecondPass(FkSecondPass.java:40)
at org.hibernate.cfg.AnnotationConfiguration.secondPassCompile(AnnotationConfiguration.java:261)
at org.hibernate.cfg.Configuration.buildMappings(Configuration.java:1034)
at org.hibernate.ejb.Ejb3Configuration.buildMappings(Ejb3Configuration.java:868)
at org.hibernate.ejb.EventListenerConfigurator.configure(EventListenerConfigurator.java:163)
at org.hibernate.ejb.Ejb3Configuration.createEntityManagerFactory(Ejb3Configuration.java:641)
at org.hibernate.ejb.Ejb3Configuration.createFactory(Ejb3Configuration.java:134)
at org.hibernate.ejb.Ejb3Configuration.createEntityManagerFactory(Ejb3Configuration.java:188)
... 20 more

I'm having the same problem with this...

Does anybody have a clue with this one? Is this actually supposed to work in hibernate??

Cheers
J

associations only work between @Entity classes

so, exists any type of annotations, configuration or , anything that allow an association between an @Entity and hbm.xml mapped class????

Thanks and Merry Xmas!!!!

I had a similar problem and found that I could use table per class inheritance in place of @MappedSuperclass. The only disadvantage I've run into is that using table per class doesn't allow overrides.