"epbernard" wrote : If we are OK to go the non standard route, I can look at adding a method on HibernateEntityManagerFactory. | Set<Class<?>> getEntities(); | returning the list of entities. | | Or even better you can do | | Collection metadatas = (Map) ( (HibernateEntityManagerFactory) emf ).getSessionFactory().getAllClassMetadata().values(); | | for(ClassMetadata metadata : metadatas) { | Class<?> entityType = metadata.getMappedClass(EntityMode.POJO); | if (entityType != null) | doStuffCauseItsAnEntity( entityType ); | } I think it is good way, so public Collection<Class<?>> discoverEntities(); is executed in context of deployed PU. EMF should take responsibility to discover which entities belong to it and expose API to get that information. So code for hibernate is ready, and for EMF which now doesn't expose similair API code discoverEntities should throw exception ..? View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4225600#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...