Foreign keys have random number appended when using Hibernate's TABLE_PER_CLASS inheritance

I curren开发者_运维百科tly have the following in my domain model:

@Inheritance(strategy = InheritanceType.TABLE_PER_CLASS)
@Entity
abstract class Item {
    @ManyToOne
    @ForeignKey(name="FK_ITEM_ORG")
    @JoinColumn(name="ORG_ID")
    private Organization org
}

@Table(name = "ItemA")
public class ItemA extends Item {}

@Table(name = "ItemB")
public class ItemA extends Item {}

Hibernate's HBM2DDL creates 2 tables for this mapping: ItemA and ItemB. Both have the ORG_ID column and a foreign key to the Organization table. However, each foreign key has a random number appended (ie FK_ITEM_ORG98343). How can I specify what foreign key each table uses? For example, I want to have FK_ITEMA_ORG and FK_ITEMB_ORG.

Update

Please also see the follow-on question: Is the ForeignKey annotation only used by HBM2DDL to generate the schema?

Unfortunately, you have to remove annotation from field in main class and move it to method in each children with providing FK name.

Something like that:

@Inheritance(strategy = InheritanceType.TABLE_PER_CLASS)
@Entity
public abstract class Item {
    private Organization  org;
    public Organization getOrg() {
        return org;
    }

}

@Entity
@Table(name = "ItemA")
public class ItemA extends Item {
    @ManyToOne
    @JoinColumn(name="ORG_ID")
    @ForeignKey(name="FK_ITEM_ORG_1")
    public Organization getOrg(){
        return super.getOrg();
    }
}


public class ItemB extends Item{
    @ManyToOne
    @JoinColumn(name="ORG_ID")
    @ForeignKey(name="FK_ITEM_ORG_2")
    public Organization getOrg(){
        return super.getOrg();
    }
}