Re: detachment of fetch-groups doesnt work

[Craig L Russell]

It's worth a JIRA.

Detachment occurs either at context end or at explicit detach.





Craig

On Apr 8, 2009, at 11:57 PM, Marc Logemann wrote:

Does this anomalous behavior occur if you explicitly detach your entities, or only implicitly at context end? And have you changed the openjpa.DetachState configuration property which governs how objects are detached?

is this worth a JIRA ?

---
regards
Marc Logemann
http://www.logemann.org
http://www.logentis.de




Am 08.04.2009 um 23:50 schrieb Tedman Leung:

just as additional information, this is also true about any lazy

it prior to detachment.


when detached.

On Wed, Apr 08, 2009 at 05:18:48PM +0200, Marc Logemann wrote:

PersistentCollection too. I found that if I accessed the collection while it is in an attached state the values are available, but as soon as it becomes detached the collection becomes null even if I had just accessed I'm not entirely sure if this is a bug or if it's suppose to work this way

Hi,


are in a fetch-group. My persistence.xml is:

<property name="openjpa.DetachState" value="fetch-
groups(DetachedStateField=true)"/>

My Domain class header:

@FetchGroups({
  @FetchGroup(name="posDetail", attributes={
      @FetchAttribute(name="deliveryAddresses")
  })
})
public class Order {

  @OneToMany(mappedBy = "order", cascade = CascadeType.ALL, fetch =
FetchType.LAZY)
  List<DeliveryAddress> deliveryAddresses;
...
}



Now when i am leaving my DAO layer which means that the persistence
contexts ends, the delivery address is "null" even though its in the
fetch group. I even queried for the fetch group in the DAO before
leaving it via:


from Order o where o.oid = ?1"));
      oQuery.setParameter(1, oid);
      //

      List list = oQuery.getResultList();
      if(list != null && list.size() > 0)  {
          return (Order)list.iterator().next();
      }

I know it must be a detach issue because with the following
persistence.xml it works (but i definitely wont use this config in
production)

<property name="openjpa.DetachState" value="all"/>


attribute is populated but as soon as i leave my DAO, its lost.

---
regards
Marc Logemann
http://www.logemann.org
http://www.logentis.de

with OpenJPA 1.2.0 i am having some problems detaching attributes which (in fact i also have the @LoadFetchGroup("posDetail") to be sure.....) OpenJPAQuery oQuery = OpenJPAPersistence.cast(em.createQuery("select o oQuery .getFetchPlan().setMaxFetchDepth(3).addFetchGroup("posDetail"); Am i missing something here? When i debug my DAO, the deliveryAddress

--
                                                         Ted Leung


I can speak Canadian, American, Australian, and little English.

ted...@sfu.ca

Craig L Russell
Architect, Sun Java Enterprise System http://db.apache.org/jdo
408 276-5638 mailto:craig.russ...@sun.com
P.S. A good JDO? O, Gasp!

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