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Error in Saving Diagram [message #184619]

Mon, 28 April 2008 16:30

Eclipse User

Originally posted by: deryck1982.gmail.com

I know that this subject has been treated previously on this newsgroup,
but I
didn't understand really well from the earlier topics.

I'm trying to add more than one diagram in my RCP application, but when I
try to save a diagram it displays the following error message:

java.lang.NullPointerException
at
org.eclipse.ui.dialogs.SaveAsDialog.createContents(SaveAsDia log.java:108)
at org.eclipse.jface.window.Window.create(Window.java:426)
at org.eclipse.jface.dialogs.Dialog.create(Dialog.java:1081)
at
activityDiagram.diagram.part.ActivityDiagramDiagramEditor.pe rformSaveAs(ActivityDiagramDiagramEditor.java:182)
at
org.eclipse.gmf.runtime.diagram.ui.resources.editor.parts.Di agramDocumentEditor.doSave(DiagramDocumentEditor.java:633)
at org.eclipse.ui.internal.SaveableHelper$1.run(SaveableHelper. java:143)
at org.eclipse.ui.internal.SaveableHelper$4.run(SaveableHelper. java:266)
at
org.eclipse.jface.operation.ModalContext.runInCurrentThread( ModalContext.java:369)
at org.eclipse.jface.operation.ModalContext.run(ModalContext.ja va:313)
at
org.eclipse.jface.window.ApplicationWindow$1.run(Application Window.java:758)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator .java:67)
at
org.eclipse.jface.window.ApplicationWindow.run(ApplicationWi ndow.java:755)
at org.eclipse.ui.internal.WorkbenchWindow.run(WorkbenchWindow. java:2451)
at
org.eclipse.ui.internal.SaveableHelper.runProgressMonitorOpe ration(SaveableHelper.java:274)
at
org.eclipse.ui.internal.SaveableHelper.runProgressMonitorOpe ration(SaveableHelper.java:253)
at
org.eclipse.ui.internal.SaveableHelper.savePart(SaveableHelp er.java:148)
at org.eclipse.ui.internal.EditorManager.savePart(EditorManager .java:1345)
at org.eclipse.ui.internal.WorkbenchPage.savePart(WorkbenchPage .java:3184)
at
org.eclipse.ui.internal.WorkbenchPage.saveEditor(WorkbenchPa ge.java:3197)
at org.eclipse.ui.internal.SaveAction.run(SaveAction.java:73)
at org.eclipse.jface.action.Action.runWithEvent(Action.java:498 )
at
org.eclipse.jface.action.ActionContributionItem.handleWidget Selection(ActionContributionItem.java:545)
at
org.eclipse.jface.action.ActionContributionItem.access$2(Act ionContributionItem.java:490)
at
org.eclipse.jface.action.ActionContributionItem$6.handleEven t(ActionContributionItem.java:443)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java :66)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:938)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.ja va:3682)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java :3293)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.jav a:2389)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2353)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:22 19)
at org.eclipse.ui.internal.Workbench$4.run(Workbench.java:466)
at
org.eclipse.core.databinding.observable.Realm.runWithDefault (Realm.java:289)
at
org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:461)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:149)
at
classDiagram.diagram.application.ClassDiagramApplication.run (ClassDiagramApplication.java:19)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at
org.eclipse.equinox.internal.app.EclipseAppContainer.callMet hod(EclipseAppContainer.java:533)
at
org.eclipse.equinox.internal.app.EclipseAppHandle.run(Eclips eAppHandle.java:155)
at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication(EclipseAppLauncher.java:106)
at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(EclipseAppLauncher.java:76)
at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:363)
at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:176)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java: 504)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:443)
at org.eclipse.equinox.launcher.Main.run(Main.java:1169)
at org.eclipse.equinox.launcher.Main.main(Main.java:1144)

Re: Error in Saving Diagram [message #184749 is a reply to message #184619]

Tue, 29 April 2008 17:21

Eclipse User

Originally posted by: abrown.gmail.com

Hello Deryck,

Have you solved your problem? I'm having the same problem as you.

When you save the diagram it updates the correspondant XMI file
(DomainModel), so I think that maybe it's not happening because of the
NullPointerException.

Or maybe because of something else the NullPointerException is thrown,
and that'
s why the DomainModel is not updated.

Does anybody know if is it?

Andy Brown

Re: Error in Saving Diagram [message #185092 is a reply to message #184749]

Fri, 02 May 2008 15:14

Eclipse User

Originally posted by: deryck1982.gmail.com

Hello Andy!

Nice that u replied my topic!

The problem is that I dont't know which class does the sychronism between
the DomainModel and the Diagram.

I would like to do it via the plugin.xml

best regards, Deryck

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