How to bind an entity to a specific persistence-unit

Question

In a web application using struts2 ejb hibernate, is it possible to tell the application to find or create an entity for a specific persistence-unit name, which is written in persistence.xml file, in the deployment time?

I have two persistence-unit in persistence.xml, and one datasource (including two "local-tx-datasource") xml file under the jboss node.

To clearify, I mean, I tried this;

@Entity  
@PersistenceContext(unitName="MY JNDI NAME specified in persistence.xml") 
public abstract class Vehicle {

and doesnt work.. Then tried this and etc..

@PersistenceContext(name="MY PERSISTENCE UNIT NAME specified in persistence.xml")

@PersistenceUnit(name="MY PERSISTENCE UNIT NAME specified in persistence.xml")

and also I tried these above with the "UnitName=.." instead of "name=.." but anything is worked for me...

Answer 1

@Pascal Thivent

I haven't tried using multiple EntityManager at once, but looking at above mentioned problem this may help if it works.

@PersistenceContext(unitName="MyPu1") EntityManager em1;

@PersistenceContext(unitName="MyPu2") EntityManager em2;