[AS7] Configure a default persistence unit in persistence.xml

[jsebfranck]

Hi,

I have to configure several persistence units in persistence.xml. But it is possible to configure a default persistence unit?

I would like to avoid to systematically fill in the unit-name of the @PersistenceContext annotation. For example :

// Use the default persistence unit

@PersistenceContext

EntityManager defaultEntityManager;

// Use the persistence unit named "specificPersistenceUnit"

@PersistenceContext(unitName="specificPersistenceUnit")

EntityManager specificEntityManager;

Thank you in advance,

[smarlow]

I like the idea, it would be nice if you could flag one of the persistence unit definitions as the default (via a property setting).  There is no way currently to do this but definitely worth considering. 

Any volunteers to help work on this idea? 

Scott