name forgeign key in JPA?

Question

I am using the Hibernate Tools ant task to generate DDL from JPA annotated entities. With hibernate annotations you can name the foreign key using

@JoinColumn(name = "foo")
@org.hibernate.annotations.ForeignKey(name = "fk_foo")

Is there a pure JPA way of achiving the same?

Answer 1

Not in annotation. You can however set the columnDefinition and write the foreign key in there.

Answer 2

No. JDO is the only persistence specification allowing definition of FK names, onUpdate/onDelete actions etc. JPA (even in JPA2) simply doesn't go there.

--Andy (DataNucleus)