Inject PersistenceContext in JAR lib

Question

I have a problem with injecting a EntityManagerFactory with @PersistenceUnit in a third part jar library that contains my DAO's.

Here is my multi module maven project structure.

-EAR
 \-WAR ==> the webapp (maven type war)
  \-EJB ==> the service facade (maven type EJB (provided to War)
   \CORE ==> the legacy DAO's library (maven type JAR)

I use CDI to wire all together ==> there is a beans.xml file in all maven project... and the CDI works fine.

But the @PersistenceUnit annotation doesn't work when I put it in the CORE project. (the field is null)

When I use @PersistenceUnit in the EJB project, everything works fine.

My persistence.xml file is under META-INF folder of the EJB project (but I tried to put it in the core project too..without success).

Here is the injection point :

public class HibernateSupport {

@PersistenceUnit
private EntityManagerFactory emf;

...
}

This class is injected in the EJB project with CDI (and it works...but the emf field is null...)

Could someone help me?

Edit :

If I turn my core project into an EJB project (maven type ejb). Then it works... But I would like my core project stays a POJO project...

Edit 2 :

The producer code :

@PersistenceUnit
private EntityManagerFactory emf;

@Produces 
public SessionFactory getSessionFactory() {
    return ((HibernateEntityManagerFactory)emf).getSessionFactory();
}

Answer 1

With annotation @PersistenceUnit you can inject only to EJB. Your HibernateSupport is not EJB. So in order to fix issue, you need:

• Make HibernateSupport an EJB;

or

• Inject EntityManager using @Inject, read here how to do it;