[eclipselink-users] EmbeddedId in superclass

[Shawn Huang <shawnhsy@xxxxxxxxx>]

i have these classes.

@Embeddable

public class ProductId implements Serializable{

    private String supp;

    private String lot;

}

@Entity

@Inheritance(strategy = InheritanceType.TABLE_PER_CLASS)

public abstract class AbstractStore implements Serializable {

    @EmbeddedId

    protected ProductId id;

    protected Integer dept;

}

@Entity

@Table(name = "SM_STORE")

public class SmStore extends AbstractStore implements Serializable {

}

when deploy to glassfish, eclipse link gives following exception:

Local Exception Stack: 

Exception [EclipseLink-0] (Eclipse Persistence Services - 2.0.0.v20091127-r5931): org.eclipse.persistence.exceptions.IntegrityException

Descriptor Exceptions: 

---------------------------------------------------------

Exception [EclipseLink-74] (Eclipse Persistence Services - 2.0.0.v20091127-r5931): org.eclipse.persistence.exceptions.DescriptorException

Exception Description: The primary key fields are not set for this descriptor.

Descriptor: RelationalDescriptor(com.comany.SmStore --> [DatabaseTable(SM_STORE)])

am i missing something.