@PersistenceContext is always null

Question

I'm trying to get CDI (with Open Web Beans) working from within a unit test using Delta Spike (@RunWith(CdiTestRunner.class)). Dependency injection is working fine but my EntityManagerFactory is always null:

public class EntityManagerProducer {

    @PersistenceContext(unitName = "sbPersistenceUnit")
    private EntityManagerFactory emf;  //Always null

    @Produces
    public EntityManager create() {            
        return emf.createEntityManager();
    }

    public void close(@Disposes EntityManager em) {
        if (em.isOpen()) {
            em.close();
        }
    }
}

I know that my persistence.xml is okay because I can create the Session Factory manually:

EntityManagerFactory test = Persistence.createEntityManagerFactory("sbPersistenceUnit");

and all other injections are working fine. Does anybody know what might be missing?

score 1 · Answer 1 · answered Apr 18 '15 at 18:23

1

You will need to use @PersistenceUnit to inject EntityManagerFactory. @PersistentContext is used for EntityManager injection.

answered Apr 18 '15 at 18:23

Abhishek

1,175
1
11
21

Thanks, I think I changed it to `@PersistentContext` in desperation. Both result in a null session factory. – StuPointerException Apr 29 '15 at 09:51

score 1 · Accepted Answer · answered Jun 27 '15 at 23:12

In an unit-test you aren't in a managed environment. OpenWebBeans would support it via the openwebbeans-resource module + @PersistenceUnit, but that isn't portable. So you need to use e.g.:

@Specializes
public class TestEntityManagerProducer extends EntityManagerProducer {
    private EntityManagerFactory emf = Persistence.createEntityManagerFactory("...");

    @Produces
    //...
    @Override
    protected EntityManager create() {
        return emf.createEntityManager();
    }

    @Override
    protected void close(@Disposes EntityManager em) {
        if (em.isOpen()) {
            em.close();
        }
    }
}

in the test-classpath

If you ask such questions on their mailing-list, you get answers petty quickly.

Thanks for the answer, I've gone down a similar route to what you proposed and everything is working. — StuPointerException, Jun 30 '15 at 13:54

score 0 · Answer 3 · answered Apr 17 '15 at 15:38

0

Do you define your entitymanagerFactory as a bean?

<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager"> 
        <property name="entityManagerFactory" ref="entityManagerFactory" />
    </bean>

answered Apr 17 '15 at 15:38

mvlaicevich

103
1
8

Thanks for the suggestion, however there is no Spring in this project - it's pure CDI, – StuPointerException Apr 17 '15 at 16:06
ok, sorry for that, do you try this? http://stackoverflow.com/questions/27506727/inject-persistencecontext-with-cdi – mvlaicevich Apr 17 '15 at 16:12

@PersistenceContext is always null

3 Answers3