[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-3069) ObjectNotFoundException when proxy exists for super class of non existant joined subclass

[dan oxlade (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-3069?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_29341 ] 

dan oxlade commented on HHH-3069:
---------------------------------

That is not the issue.
The ids are unique, if you look at the failing test case the id is 0, this could just as well be any id that doesn't exist in either person or employee tables.

The point that session.get() should return consistently, calling session.get before the proxy is in the session works just fine but after a proxy is loaded into the session it falls over.

The test case is explicit but assume that person has been loaded (as proxy) because of another entity being loaded then you are in all sorts of trouble.

This should be reopend

> ObjectNotFoundException when proxy exists for super class of non existant joined subclass
> -----------------------------------------------------------------------------------------
>
>                 Key: HHH-3069
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-3069
>             Project: Hibernate3
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 3.2.5
>            Reporter: dan oxlade
>
> A proxy of an entity which has a joined subclass is loaded into the session.
> If the proxy resolves to null, i.e the id of the proxy has no matching row in the database then future queries (in the same hibernate session) for any of the joined subclass entities will fail with ObjectNotFoundExceptions from the returnNarrowedProxy method of the DefaultLoadEventListener.
> the following test method in JoinedSubclassTest demonstrates the failing test:
> 	
> 	public void testProxyLoadedWhichDoesNotExist() throws Exception {
> 		Session s = openSession();
> 		Transaction t = s.beginTransaction();
> 		
> 		Long id = Long.valueOf(0L);
> 		Employee employee = (Employee) s.get(Employee.class,id);
> 		assertNull(employee);
> 		
> 		Person proxy = (Person) s.load(Person.class,id);
> 		assertNotNull(proxy);
> 		
> 		employee = (Employee) s.get(Employee.class,id);
> 		assertNull(employee);
> 		
> 		t.commit();
> 		s.close();
> 	}

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