Hi Reinout,
i'm not an apache Wicket expert, but the Exception its obiusvly casted by the
fact that ur application is casting objects into different DataContexts.
What happen if u steps into
final Person auxiliary = ObjectFactory.getInstance().createPerson();
auxiliary.setSex(Person.SEX_UNKNOWN);
nameObj.setPerson(auxiliary);
?
________________________________
Da: Reinout van Schouwen <[email protected]>
A: [email protected]
Inviato: Mercoledì 22 luglio 2009, 12:34:09
Oggetto: Different DataContext
Hi all,
I hope someone can help me with the following issue. I'm using Cayenne
with Databinder and Wicket for my application. In my model, multiple
'PersName' objects can be associated to one 'Person'. But whenever I
try to associate a newly created PersName with a Person, I get a
CayenneRuntimeException:
org.apache.cayenne.CayenneRuntimeException: [v.2.0.4 October 12 2007]
Cannot set object as destination of relationship person because it is
in a different DataContext
at
org.apache.cayenne.CayenneDataObject.willConnect(CayenneDataObject.java:340)
at
org.apache.cayenne.CayenneDataObject.setToOneTarget(CayenneDataObject.java:290)
at
nl.huygensinstituut.bia.domain.auto._PersName.setPerson(_PersName.java:69)
at
nl.huygensinstituut.bia.PersonInfoPanel$2.onSubmit(PersonInfoPanel.java:102)
at org.apache.wicket.markup.html.form.Form.delegateSubmit(Form.java:1351)
at org.apache.wicket.markup.html.form.Form.onFormSubmitted(Form.java:810)
at java.lang.reflect.Method.invoke(Method.java:616)
at
org.apache.wicket.RequestListenerInterface.invoke(RequestListenerInterface.java:183)
at
org.apache.wicket.request.target.component.listener.ListenerInterfaceRequestTarget.processEvents(ListenerInterfaceRequestTarget.java:73)
at
org.apache.wicket.request.AbstractRequestCycleProcessor.processEvents(AbstractRequestCycleProcessor.java:91)
at
org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1220)
at org.apache.wicket.RequestCycle.step(RequestCycle.java:1297)
at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1399)
at org.apache.wicket.RequestCycle.request(RequestCycle.java:529)
at
org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:356)
at
org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:201)
(jetty frames snipped)
Here's a snippet of the failing code:
DataContext mycontext = Databinder.getContext();
person =
ObjectFactory.getInstance().getPerson(parameters.getInt("personid"),
mycontext);
// ObjectFactory is a singleton. getPerson method executes
DataObjectUtils.objectForPK(context, Person.class, id);
final PersName nameObj = (PersName) persNameForm.getModelObject();
// PersName extends CayenneDataObject
persNameForm.add(new Button("submitpersname", new ResourceModel("Save")) {
@Override
public void onSubmit() {
if (nameObj.getPerson() == null && person == null) {
final Person auxiliary = ObjectFactory.getInstance().createPerson();
auxiliary.setSex(Person.SEX_UNKNOWN);
nameObj.setPerson(auxiliary);
} else {
nameObj.setPerson(person); // <-- line 102 where the
exception is triggered. 'person'
}
super.onSubmit();
}
});
Thanks for any advice!
--
Reinout van Schouwen
http://vanschouwen.info/
