Java Persistence with Hibernate

11.3. Conversations with JPA

We now look at persistence context propagation and conversation implementation with JPA and EJB 3.0. Just as with native Hibernate, you must consider three points when you want to implement conversations with Java Persistence:

• You want to propagate the persistence context so that one persistence context is used for all data access in a particular request. In Hibernate, this functionality is built in with the getCurrentSession() feature. JPA doesn't have this feature if it's deployed stand-alone in Java SE. On the other hand, thanks to the EJB 3.0 programming model and the well-defined scope and lifecycle of transactions and managed components, JPA in combination with EJBs is much more powerful than native Hibernate. ...