I don't see any issues. Is it possible that you have a TestEntity in your DB
that doesn't have any children (bad data) in your DB from a previous run?
Also, why are you calling em.merge(..)? That call is unnecessary as the
results from your query already are a part of your persistence context.
Thanks,
Rick
On Thu, Aug 4, 2011 at 7:51 AM, Michael Pflueger <michael.pflue...@sma.de>wrote:
> Hi,
>
> I'm digging through some of my OpenJPA problems and came across this issue.
> I get a NPE when I access te2.getChildren().xyz(), but only when I merge
> the object before the access AND the lazy association is not yet fetched AND
> I set Cascadetype.MERGE on the association.
>
> List<TestEntity> entities = query.getResultList();
> for (TestEntity te : entities) {
> TestEntity te2 = em.merge(te);
> System.out.println(te2.getChildren().size());
> }
>
> I'm using OpenJPA 2.1.0 with the MySQL connector.
> Attached is the full source and persistence.xml.
>
> Can anybody reproduce this and is this a bug?
>
> Regards,
> Michael
> ___________________________________________________
>
> SMA Solar Technology AG
> Aufsichtsrat: Guenther Cramer (Vorsitzender)
> Vorstand: Juergen Dolle, Roland Grebe, Uwe Hertel, Pierre-Pascal Urbon,
> Marko Werner
> Handelsregister: Amtsgericht Kassel HRB 3972
> Sitz der Gesellschaft: 34266 Niestetal
> USt-ID-Nr. DE 113 08 59 54
> WEEE-Reg.-Nr. DE 95881150
> ___________________________________________________
>
--
*Rick Curtis*
