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http://opensource.atlassian.com/projects/hibernate/browse/HHH-3069?page=c...
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dan oxlade commented on HHH-3069:
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So this means having a proxy in the session of an entity that doesn't exist will break
joined-subclasses.
This means that it is not at all possible to map relationships on an entity which has a
joined subclass when you are aware that this entity may not exist and may be loaded lazily
(by other relationships -not by the load method which is clearly misuse of the api-)
If this is the case I will close the issue. However it does seem somewhat limiting to
complex object graphs.
ObjectNotFoundException when proxy exists for super class of non
existant joined subclass
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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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