[jboss-user] [EJB 3.0] - HibernateException: this instance does not yet exist as a ro

[wmax]

I have a stateful session bean that uses other stateless session beans via their remote interfaces. The stateless session beans use EJB3 persistence. Now I have this scenario:

Application bean (stateful):
Resource resource = securityManager_.createResource(admin);
  | return folderManager_.createRootFolder(resource);

Security Manager bean (stateless):
@PersistenceContext private EntityManager em_;
  | 
  | public Resource createResource(User owner) throws SecurityException {
  |   Resource resource = new Resource(owner);
  |   em_.persist(resource);
  |   return resource;
  | }

Folder Manager bean (stateless):
@PersistenceContext private EntityManager em_;
  | 
  | public Folder createRootFolder(Resource resource) throws FolderException {
  | 
  |   // this instruction causes the exception
  |   em_.refresh(resource);
  | 
  |   // code omitted
  | }


The em_.refresh(resource); causes a HibernateException to be throws:  

anonymous wrote : Stack Trace:
  |     * org.hibernate.ejb.AbstractEntityManagerImpl.throwPersistenceException(AbstractEntityManagerImpl.java:567)
  |     * org.hibernate.ejb.AbstractEntityManagerImpl.refresh(AbstractEntityManagerImpl.java:239)
  |     * org.jboss.ejb3.entity.TransactionScopedEntityManager.refresh(TransactionScopedEntityManager.java:193)
  |     * net.sf.adigres.foldermanager.FolderManagerBean.createRootFolder(FolderManagerBean.java:88)
  |     * ....
  | Caused by: org.hibernate.HibernateException: this instance does not yet exist as a row in the database
  |     * org.hibernate.event.def.DefaultRefreshEventListener.onRefresh(DefaultRefreshEventListener.java:90)
  |     * org.hibernate.event.def.DefaultRefreshEventListener.onRefresh(DefaultRefreshEventListener.java:39)
  |     * org.hibernate.impl.SessionImpl.fireRefresh(SessionImpl.java:895)
  |     * org.hibernate.impl.SessionImpl.refresh(SessionImpl.java:879)
  |     * org.hibernate.ejb.AbstractEntityManagerImpl.refresh(AbstractEntityManagerImpl.java:233)
  |     * ... 106 more

This happens only in conjunction with the stateful Application bean. Stand alone tests of the two stateless beans involved work without problems.

I guess it has something to do with transactions but I don't use @TransactionAttribute annotations anywhere so the default value (REQUIRED) should apply (and be appropriate).

Can anyone help me with this, please?

View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4004544#4004544

Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4004544