[jboss-user] [EJB 3.0] - @DiscriminatorValue: find not returning subclasses

Env: JBoss AS 4.0.5.GA w/EJB3 I have looked over several different docs that describe how to use entity inheritance w/ SINGLE_TABLE. I used those examples as the basis for my code. I have a base class Units and have subclasses RFUnit and EMUnit. (em is an entitymanager object) When I do em.find() or em.getResultList() it always returns the base class. I get no errors of any kind. I am examining the returned class by both returnedObject.getClass().getName() and via Eclipse debugger. Anyone: Please advise as to how to get subclasses returned from em find or query???? Here are the relevant class declarations: // base class @Entity @Table(name = "units", catalog = "test2", uniqueConstraints = @UniqueConstraint(columnNames = "unitName")) @Inheritance(strategy=InheritanceType.SINGLE_TABLE) @DiscriminatorColumn(name="hwModel", discriminatorType=DiscriminatorType.INTEGER) ..... // 1st subclass @Entity @DiscriminatorColumn(discriminatorType = DiscriminatorType.INTEGER) @DiscriminatorValue(value="3") public class RFUnit extends Units { ..... // 2nd subclass @Entity @DiscriminatorColumn(name="hwModel", discriminatorType = DiscriminatorType.INTEGER) @DiscriminatorValue(value="7") public class EMUnit extends RFUnit { ...... // code doing find/fetch UnitsList ul = new UnitsList(); // Seam convenience class List l = ul.getResultList(); for (Units u:l) { String tmp = u.getClass().getName(); System.out.println(u.getClass().getName()); } I also tried: ul.getEntityManager().createQuery("Select units from Units units").getResultList(); to do the fetch. Same result. This should be simple. What am I missing? I did confirm the discriminator column values where as specified in the @DiscriminatorValue annotation. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4115789#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...