@Entity
@Inheritance(strategy = InheritanceType.TABLE_PER_CLASS)
@TypeDef(
        name = "GenericPJM_Id",
        defaultForType = GenericPJM_Id.class,
        typeClass = GenericPJM_Id.class
)
public interface GenericPJM<T extends GenericPJM_Id> {
  @EmbeddedId
  @Type(type="GenericPJM_Id")
  T getId();

  void setId(T id);
}

@Embeddable
public interface GenericPJM_Id extends Serializable {}