JPA dynamic persistence unit name

Question

I need a way to dynamically specify the persistence unit in a EJB.

Simplified example:

I have an application using multiple databases as data stores. Each of th

Answer 1

This probably is of no help to solve the problem, but you may like to know that this kind of problems is being discussed for the implementation of JPA 2.1

This sounds like one of those cases of multitenancy:

Proposal for Multitenancy Support in JPA 2.1 JSR-338