I think what you want to do is have two fields in your referencing
object: one persistent field to hold the PK to the other object, and
one transient field to hold a reference to the object that has the PK.
Then, in a post-load callback, populate the transient reference using
the field containing the PK of the object you want to reference
transiently. You could also nullify the transient field on a
pre-detach & pre-delete as well.
public class Foo {
// ...
private BarKey barKey; // persistent, stores PK
@Transient
private Bar bar; // transient, refers to Bar with key barKey
@PostLoad
public void postLoad() {
bar = goFindBarByKey(barKey); // or however you load the Bar
}
}
-matthew
On Wed, Mar 23, 2011 at 6:41 AM, <[email protected]> wrote:
> Hello there,
>
> I have a persisted field that contains the PK of another entity. It is not
> mapped properly and is filled manually. The objects this PK refers to are
> all loaded elsewhere.
> The mappedBy seems to only apply to inverse relations. Is there a way I
> can add a Transient OneToOne field that uses this PK and points to that
> entity? (It need not be saved again...)
>
> How can I add a new field to this same object that refers to the entity
> pointed to by the PK? I know I am approaching this the wrong way, can
> anyone provide any guidance on where to go from here?
>
> Thank-you.
>
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