[perfectjpattern-users] Queries in Jpa dao

[Mansour Al A. <man...@gm...>]

Hello all:
How do I use queires in a DAO that extends AbstractJpaManagedBaseDao ? 

For example, AbstractJpaManagedBaseDao prevents accessing entityManager.
So I can not use queries to select of filter some objects. Here's a
code:

@Stateless(name = "GeoDao")
public class GeoDaoImpl extends AbstractJpaManagedBaseDao<String, Geo> implements GeoDao {

    public GeoDaoImpl() {
        super(Geo.class);
    }

    @PersistenceContext(unitName = "myPU")
        public void setEntityManager(EntityManager em) {
            super.setEntityManager(em);
        }

    @Override public Geo getByAbbreviation(String abbreviation) {
        IQuery query = getSession().createQuery("select g from Geo g WHERE g.abbreviation= :abbr");
        //HERE I NEED TO SET THE PARAMETERS for abbreviation
        List <Geo> res = query.getResultList();
        return res.get(0);
    }
}


I am using openEJB with openJPA. Can not use spring or hibernate. 
Am I missing something ? 


Thank you in advance