run EntityQuery outside seam context

[mrossix]

Hi,
it's possible to run the seam daos outside the seam context?

I try to create a new java project, and import the EntityQuery and EntityHome created with seam-gen (with all the required library), but it doesn't work.

Here the message ...

java.lang.IllegalStateException: No application context active

[gjeudy]

I think you got your answer. If you try to use a Seam component outside it's context it will not work because dependencies are not injected in the component, transaction is not started etc...

The assumption is that a Seam application context should be active in this case.

[mrossix]

The dependencies can be injected "by hand". If i create my custom dao i can resuse it in other "non seam" project. For example:

@Name("personDAO")
@Scope(ScopeType.CONVERSATION)
public class PersonDAO {
     
    @In EntityManager em;

    public List<Person> loadPersons()
    {
         return em.createQuery("select p from Person p").getResultList();
    }

.....
...
}


To use it outside seam:

PersonDAO personDAO = new PersonDAO ();          
EntityManagerFactory emf = Persistence.createEntityManagerFactory("helloworld12");
EntityManager em = emf.createEntityManager();     

          
// manual injection
personDAO .setEm(em);          

personDAO .loadPersons();



Obviously i loose the seam feature (like conversation in this case), but i can reutilize the same dao, e.g. for a batch precess.
But this approach doesn't work with the daos generated by seam application framework.