i write a GenericDAO (stateless session bean). in the dao i need entity manager , s oi use in the following lines: @PersistenceContext(unitName="persistence_unit_name") EntityManager em; In my application i have multiple persistence units (some of them created in run time). so, i have problem to use this DAO, because it demand to write the persistence unit name at compile time. I thought on AOP solution to intercept Jboss injection process and in run time set the persistence unit. I am asking how can i do this? Thank you View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4050117#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...