Is this supported? I am getting an "java.lang.IllegalArgumentException: XClass not coming from this ReflectionManager implementation" exception.

Hibernate document says that "you can provides any XML file in the mapping file element ie. either hbm files or EJB3 deployment descriptor."

Or is it applicable only for POJO?

EntityManagerFactory emf = Persistence.createEntityManagerFactory("sample");
EntityManager em = emf.createEntityManager();

Session sess = ((EntityManagerImpl)em).getSession();
Session dom4jSession = sess.getSession(EntityMode.DOM4J);
Transaction tx = sess.beginTransaction();

Document document = DocumentHelper.createDocument();
Element acc = document.addElement( "Account" );

Object accid = dom4jSession.save(acc);
System.out.println(accid+" saved");

I am using 3.2.0.CR1 from entitymanager and 3.2 CR2 for core. I tried dom4j for hibernate.default_entity_mode in persistence.xml and didn't help. It works on directly created SessionFactory (without entitymanager) with EntityMode.DOM4J.

thanks,
mani doraisamy