Hi! Thanks a lot for your answers Robert and Mike, Robert was right, I was looking for short term/ temporary pk that can be apparently be obtained with obj.getObjectId() for cases where the object has not been persisted in to the database.
Seems like Cayenne could be a better fit for the way my mind works, but I do require inheritance support on a level like the one available in hibernate... do you know how far in the future is a full JPA 1.0 3 types of inheritance support for Cayenne? Another thing a really miss a lot from EOF are NestedEditingContexts... ( I think they would be a perfect fit for Seam Conversations). Is there support for them in Cayenne? Regards, Francisco -- View this message in context: http://www.nabble.com/Coming-from-EOF%3A-Cayenne-vs-Hibernate-tp22463349p22465074.html Sent from the Cayenne - User mailing list archive at Nabble.com.