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From "M. Walter" <marc.wal...@sbb.ch>
Subject Re: Strange behaviour on ManyToMany relationship using RCP client
Date Fri, 11 Nov 2011 14:32:12 GMT
Hi Rick,

detach state property configuration is:
<property name="openjpa.DetachState"
value="fetch-groups(DetachedStateField=true)" />

We need this because we would like to delete values of fields (set them to
null in the database explicitly).

Here's the stack trace:

java.lang.NullPointerException
 at xx.xxx.xxxxx.common.entity.stammdaten.Bp.addMetaBp(Bp.java:804)
 at xx.xxx.xxxxx.common.entity.stammdaten.MetaBp.addBp(MetaBp.java:145)
 at
xx.xxx.xxxxx.rcp.stammdaten.internal.ui.editors.metabp.MetaBpEditor$1.run(MetaBpEditor.java:209)
 at org.eclipse.jface.action.Action.runWithEvent(Action.java:498)
 at
org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:584)
 at
org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:501)
 at
org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:411)
 at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
 at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
 at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4066)
 at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3657)
 at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2640)
 at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2604)
 at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2438)
 at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:671)
 at
org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
 at
org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:664)
 at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
 at
xx.xxx.xxxxx.rcp.internal.ui.application.Application.start(Application.java:56)
 at
org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
 at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
 at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
 at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:369)
 at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:48)
 at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
 at java.lang.reflect.Method.invoke(Method.java:600)
 at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:620)
 at org.eclipse.equinox.launcher.Main.basicRun(Main.java:575)
 at org.eclipse.equinox.launcher.Main.run(Main.java:1408)
 at org.eclipse.equinox.launcher.Main.main(Main.java:1384)


And here's the requested file: 
http://openjpa.208410.n2.nabble.com/file/n6985542/Bp.class Bp.class 

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