I saw a example at Java Persistence with Hibernate where there is a PersistenceClass to get configuration form some persist class, that example was used to show how to configure runtime configuration for some fields typed.

But that class works with Session context, without EJB3.0. I need some sample that show some similar class working with EJB3.0. There is another similar class?

Thanks all

hibernates entitymanger uses the same api so works fine if you use hibernates JPA implementation.