[hibernate-dev] Bidirectional one-to-one, both sides are owners, using @PrimaryKeyJoinColumn
Hi,
Does Hibernate support having both entities involved in a one-to-one
association own its side of the association when using
@PrimaryKeyJoinColumn?
My guess is that this is not supported by Hibernate. I just want to confirm.
For example:
@Entity
public class Employee {
@EmbeddedId
private CompositeKey id;
@OneToOne(optional = false)
@PrimaryKeyJoinColumns({
@PrimaryKeyJoinColumn(name = "ID1", referencedColumnName =
"ID1"),
@PrimaryKeyJoinColumn(name = "ID2", referencedColumnName =
"ID2"), })
})
private EmployeeInfo employeeInfo;
...
}
@Entity
public class EmployeeInfo {
@EmbeddedId
private CompositeKey id;
@OneToOne(optional = false)
@PrimaryKeyJoinColumns({
@PrimaryKeyJoinColumn(name = "ID1", referencedColumnName =
"ID1"),
@PrimaryKeyJoinColumn(name = "ID2", referencedColumnName =
"ID2"), })
})
private Employee employee;
...
}
In this particular case, the foreign keys have been deleted, so it's
possible to load and delete these entities.
An attempt to insert an entity on either side results in:
org.hibernate.PropertyValueException: not-null property references a null
or transient value
When converted to use @MapsId and @JoinColumns instead, Hibernate throws:
org.hibernate.MappingException: cyclic dependency in derived identities
Please let me know...
Thanks,
Gail