[hibernate-issues] [Hibernate-JIRA] Created: (EJB-422) PersistenceException is thrown or not depending on wheter there is @Version annotation

[Paweł Szulc (JIRA)]

PersistenceException is thrown or not depending on wheter there is @Version annotation
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                 Key: EJB-422
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/EJB-422
             Project: Hibernate Entity Manager
          Issue Type: Bug
          Components: EntityManager
         Environment: discovered on Windowx XP, using JPA with Hibernate implementation
            Reporter: Paweł Szulc


Example:

PriorityProjectRef is normal entity class. If we dont use OptimisticLocking for it (there is no @Version) then test that u can see below will pass. Persisting entity with id set to value of existing entitty will throw an exception - PersistenceException.

	@Test(expected = PersistenceException.class)
	public void testUniqueKey() {
		PriorityProjectRef entity = new PriorityProjectRef();
		dao.persist(entity);
		PriorityProjectRef entity2 = new PriorityProjectRef();
		entity2.setId(entity.getId());
		dao.persist(entity2);
	}

However if we add to our PriorityProjectRef  entity class new field annotated with @Version (to use optimistic locking), the test will fail. There will be no PersistenceException thrown. Second entity will be saved, with new id set from the sequence.

In other words:

without @Version - only one entity persisted, PersistenceException  thrown
with @Version - two enites persisted (with different IDs), PersistenceException  not thrown

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