Version: JBoss EJB-3RC8
I have a simple class hierarchy that uses joined inheritance:
| @Entity
| @Inheritance(strategy=InheritanceType.JOINED)
| public class MaterialMaster {
| private String externalId;
| }
|
| @Entity
| @PrimaryKeyJoinColumn(name="ID")
| public class SparePartMaster extends MaterialMaster {
|
| }
|
This hierarchy is referenced by another class:
| @Entity
| public class RecallOrderLine {
| @ManyToOne(fetch=FetchType.LAZY, optional=false)
| private RecallOrder recallOrder;
|
| @OneToOne(fetch=FetchType.LAZY, optional=false)
| private MaterialMaster material;
| }
|
When I query
| SELECT r FROM RecallOrderLine r
| WHERE r.recallOrder=:recallOrder
| AND r.material =:material
|
the returned RecallOrderLine has a SparePartMaster instance as expected.
Now when I query
| SELECT r FROM RecallOrderLine r
| WHERE r.recallOrder=:recallOrder
| AND r.material.externalId =:matExtKey
|
the returned RecallOrderLine has a MaterialMaster instance only!
My DB is correct. So it must be a bug in Hibernate.
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