Inicijalizacija Entity Bean-a u Session Bean-u
Koristim Oracle JDeveloper 11g i imam problem kada trebam da iskoristim Entity Bean iz Session Beam-a.
EntityManager se ne inicijalizuje pa ne mogu da da izvrsim obicnu SQL naredbu tipa Insert ili neku drugu.
Kod iz SessionBean-a izgleda ovako.
package com.Company.TestWeb;
import java.util.List;
import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;
import javax.persistence.PersistenceContext;
@Stateless(name="SessionEJB")
public class SessionEJBBean implements SessionEJB, SessionEJBLocal {
@PersistenceContext(unitName="WebProjekat-1")
private EntityManager em;
public SessionEJBBean()
{ }
public Object mergeEntity(Object entity) {
return em.merge(entity);
}
public Object persistEntity(Object entity) {
em.persist(entity);
return entity;
}
public Object refreshEntity(Object entity) {
em.refresh(entity);
return entity;
}
/** <code>select o from Departments o</code> */
public List<Departments> queryDepartmentsFindAll() {
return em.createNamedQuery("Departments.findAll").getResultList();
}
public void removeDepartments(Departments departments) {
departments = em.find(Departments.class, departments.getDepartmentId());
em.remove(departments);
}
//public EntityManagerFactory emFacDep = Persistence.createEntityManagerFactory("WebProjekat-1");
//private EntityManager emDep;
public void EMODeljenje(long lID2) {
// em = emFacDep.createEntityManager();
final EntityManagerFactory emf =
Persistence.createEntityManagerFactory("WebProjekat-1");
final EntityManager em1 = emf.createEntityManager();
final Departments cust = new Departments();
cust.setDepartmentId(lID2);;
em.persist(cust);
}
public void DodajOdeljenjeZoKi(long lID2, String sNaziv2, long lLokacija2,long lManagerID2)
{
// EMODeljenje(lID2);
// final EntityManagerFactory emf =
// Persistence.createEntityManagerFactory("customerServiceUnit");
// final EntityManager em1 = emf.createEntityManager();
//
// final Departments cust = new Departments();
// cust.setDepartmentId(lID2);;
// em1.persist(cust);
Departments Odelj1;
Odelj1 = KreirajOdeljenje( lID2, sNaziv2, lLokacija2, lManagerID2);
em1.persist(Odelj1);
}
private Departments KreirajOdeljenje(long lID, String sNaziv, long lLokacija,long lManagerID)
{
Departments OdeljenjeAdd = new Departments();
OdeljenjeAdd.setDepartmentId(lID);
OdeljenjeAdd.setDepartmentName(sNaziv);
OdeljenjeAdd.setLocationId(lLokacija);
OdeljenjeAdd.setManagerId(lManagerID);
return OdeljenjeAdd;
}
private void beginTransaction()
{//Start the resource transaction.
em.getTransaction().begin();
}
private void commitTransaction()
{
em.getTransaction().commit();
}
private void failTransaction()
{
em.getTransaction().rollback();
}
}
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