Discriminator in InheritanceType.JOINED

Question

Is it possible to force hibernate to use discriminator column for inheritance type joined? According to JPA2.0 specification this should be possible but i can\'t achieve it

Answer 1

I've used SINGLE_TABLE with a Discriminator and a SecondaryTable on the subclass to do this very thing. I.E.

@Inheritance(strategy = InheritanceType.SINGLE_TABLE)
@DiscriminatorColumn(name="TYPE")
@Entity
public class Parent

@Entity
@DiscriminatorValue("C")
@SecondaryTable(name = "child", pkJoinColumns = {@PrimaryKeyJoinColumn(name="id", referencedColumnName = "id")})
public class Child extends Parent

When you add a new sub class you add a new table with the relevant extended data fields in it.

Answer 2

Do you want to use @Inheritance(strategy=InheritanceType.SINGLE_TABLE)?