[jboss-user] [Persistence] - Simple JPA question

I'm trying to create a simple INSERT and DELETE test of an entity using JPA: | | User user = new User(); | | userEao = (GenericEAO<User, Long>) cxt.lookup("UserEAO/remote"); | | User user2 = userEao.persist(user); | | userEao.flush(); | | The question is: when user is created should be in TRANSISTENT state, and when i persist it with User user2 = userEao.persist(user); i suppose that the user2 is a reference of a user in a MANAGED state. Actually if i try to delete user with userEao.delete(user); jboss tell to me: | [DefaultDeleteEventListener] handling transient entity in delete processing | and it's correct, but if i try to delete the user2 jboss tell to me | javax.ejb.EJBException: java.lang.IllegalArgumentException: Removing a detached instance | and i dont' understand why the entity user2 is detached! so i have BEFORE to merge it ( DETACHED -> MANAGED ) , and than to DELETE, and it works. | @Override | @TransactionAttribute(TransactionAttributeType.REQUIRED) | public User persist(User entity) { | getEntityManager().persist(entity); | return entity; | } | is it the problem? when the persist finish, it close the transaction and entity became detached? i dont want to merge it, cause it causes another select that i want to avoid. Or i should i cache the entity instead? probably i didn't understand the JPA transactions, what you suggest me to read? Thanks, Muzero View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4255030#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...