Daniel,
You do not have @GeneratedValue set on the @Id field. Who is expected to
populate the value?
thanks,
-marina
Daniel Cavalcanti wrote:
>
> I have an EJB that persists, updates, removes, etc an entity... (create
> using NetBeans).
> From another EJB, BeanB, I create an entity and use the BeanA to persist.
>
> @Entity
> @Table(name = "resource_requests")
> public class ResourceRequests implements Serializable {
>
> @Id()
> @Column(name = "id", nullable = false)
> private BigInteger id;
>
> @Column(name = "start_date", nullable = false)
> @Temporal(TemporalType.DATE)
> private Date startDate;
>
> ...
>
> }
>
> @Stateless()
> public class ResourceRequestsBean
> implements ... {
>
> @PersistenceContext()
> private EntityManager em;
>
> public ResourceRequestsFacade() {
> }
>
> public void create(ResourceRequests entity) {
> em.persist(entity);
> }
>
> public ResourceRequests edit(ResourceRequests entity) {
> return em.merge(entity);
> }
>
> public void destroy(ResourceRequests entity) {
> entity = em.merge(entity);
> em.remove(entity);
> }
>
> ...
>
> }
>
>
> @Stateful()
> public class SomeBean
> implements ... {
>
> @EJB()
> private ResourceRequestsFacadeLocal resourceRequestsFacade;
>
> @EJB()
> private ResourcesFacadeLocal resourcesFacade;
>
> @EJB()
> private UsersFacadeLocal usersFacade;
>
> public void requestValet(Users user, String ticket) {
>
> //
> ******************************************************************
> // Data tier
> //
> ******************************************************************
>
> ResourceRequests request = new ResourceRequests();
>
> request.setStartDate (new Date(System.currentTimeMillis()));
> request.setResourceId(valet);
> request.setUserId(user);
>
> valet.getResourceRequestsCollection().add(request);
> user.getResourceRequestsCollection ().add(request);
>
> resourceRequestsFacade.create(request);
> resourcesFacade.edit(valet);
> usersFacade.edit(user);
>
> request = resourceRequestsFacade.edit(request);
>
> //
> ******************************************************************
> // Messaging tier
> //
> ******************************************************************
>
> ...
>
> }
>
> }
>
> Now, in the code after the Messaging tier comments, I need the request
> entity id... Which is still NULL.
> I've tried many different things, but I can't figure out how to get the
> value persisted in the DB. Furthermore, I can't look that entity up
> because I don't have the PK?!?
>
> How can I do that?
>
>