[jboss-user] [JBoss Seam] - isNull not working for one-to-one relation

[knuwu]

When I try to create a criteria like the following:


  | Criteria c = ((SessionImpl) entityManager.getDelegate())
  |   .createCriteria(Person.class);
  | 
  | pCriteria.add(Restrictions.isNull("location"));
  | 

where location is the attribute of an one-to-one relation, i don't get any hit in the resultlist, even there are records in the database matching this criteria.

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