[hibernate-issues] [Hibernate-JIRA] Created: (HHH-7046) Polymorphic query by natural ID broken

[Emanuel Kupcik (JIRA)]

Polymorphic query by natural ID broken
--------------------------------------

                 Key: HHH-7046
                 URL: https://hibernate.onjira.com/browse/HHH-7046
             Project: Hibernate ORM
          Issue Type: Bug
         Environment: Hibernate 4.1.0
            Reporter: Emanuel Kupcik


I have a simple class hierarchy that is mapped as joined subclass

class Principal
{
  String uid;
}

class User extends Princpal
{
}

class Group extends Princpal
{
}

Till 4.0 it was possible to retrieve a user the natural ID using a criteria query for User.class and using uid as natural ID. In 4.1 this fails because Hibernate complains that column user_.uid doesn't exist. I can can still retrieve the user by using a criteria query for Principal.class. 

So this works

Criteria loCriteria = loSession.createCriteria(Principal.class);
loCriteria.add(Restrictions.naturalId().set("uid", aUID));

and this no longer works

Criteria loCriteria = loSession.createCriteria(User.class);
loCriteria.add(Restrictions.naturalId().set("uid", aUID));

Hibernate knows the correct name of the column from the mapping file but in the end it looks for it in the wrong table

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