Can i pass the persistence unit to the Ejb before it inject the entity mana

Question

Hey,
The user in my system can create his personal schema, so i need to work with multiple schemas.
As i understand i need to create at run time persistence unit for each schema.
The problem is that my DAO i inject the entity manager in the following way:
@PersistenceContext(persistenceUnit="bla-bla")
public void setEntityManager(EntityManager em) {
this.em = em;
}i need to write the persistence unit name hard coded.
How can i solve this?
Thank you

Answer 1

There's no way to get this kind of dynamic association to a persistence unit for container-managed
persistence contexts. You'll need to explicitly create an EntityManager using the
EntityManagerFactory API, where you specify the name of the persistence unit at runtime. Even in
that case, the persistence unit must already be defined.
--ken