[news.eclipse.modeling.gmf] EMF / GMF : sharing Editing Domain

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[news.eclipse.modeling.gmf] EMF / GMF : sharing Editing Domain

From: charles.souillard@xxxxxxxxxxxxxx (Charles SOUILLARD)
Date: Tue, 16 Jun 2009 16:14:00 +0000 (UTC)
Newsgroups: eclipse.modeling.gmf
Organization: Eclipse
User-agent: NewsPortal/0.36 (http://florian-amrhein.de/newsportal)

Hi,

I am trying to develop a GMF editor based on an EMF model. I previously posted to sutomize the properties view which is now OK.

What I want to do now is to save the text entered in a Text field of my properties view inside the selected element of my diagram. To do that, I am able to get my element with the following code :

public void setInput(IWorkbenchPart part, ISelection selection) {
		super.setInput(part, selection);
		Object input = ((IStructuredSelection) selection).getFirstElement();
		if (input instanceof EditPart) {
			EditPart editPart = (EditPart) input;
			Object model = editPart.getModel();	
		
			if (model instanceof NodeImpl) {
				NodeImpl node = (NodeImpl) model;
				EObject element = node.getElement();
				if (element instanceof Element) {
					this.element = (Element) element;
				}
			} else if (model instanceof DiagramImpl) {
				DiagramImpl diagram = (DiagramImpl) model;
				EObject element = diagram.getElement();
				if (element instanceof Element) {
					this.element = (Element) element;
				}
			}
		}
   }

Then, in the refresh method of the AbtractSection class, I am trying to store the text value inside a field of my Element :

this.element.setName(text.getText());

but I get the following exception:
An error has occurred. See error log for more details.
Cannot modify resource set without a write transaction

I searched on the net and found something about sharing the same editing domain. I applied all recommandations written in Eclipse Modeling project book (4.4 Sharing an editing domain) but it doen't work...

I tried adding final TransactionalEditingDomain txDomain = TransactionalEditingDomain.Registry.INSTANCE.getEditingDomain("org.bonitasoft.studio.diagram.EditingDomain"); as the first line of refresh method but I still get the same error.

I will really appreciate your help... I think this is very common use case for GMF users to save datas inside EMF model objects... If you have a tutorial it will be a very good link !

Thanks a lot
Regards,
Charles

In my .metadata/.log:

!ENTRY org.eclipse.ui.views.properties.tabbed 4 2 2009-06-16 18:08:20.862 !MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.ui.views.properties.tabbed". !STACK 0 java.lang.IllegalStateException: Cannot modify resource set without a write transaction at org.eclipse.emf.transaction.impl.TransactionChangeRecorder.assertWriting(TransactionChangeRecorder.java:338) at org.eclipse.emf.transaction.impl.TransactionChangeRecorder.appendNotification(TransactionChangeRecorder.java:300) at org.eclipse.emf.transaction.impl.TransactionChangeRecorder.processObjectNotification(TransactionChangeRecorder.java:282) at org.eclipse.emf.transaction.impl.TransactionChangeRecorder.notifyChanged(TransactionChangeRecorder.java:238) at org.eclipse.emf.common.notify.impl.BasicNotifierImpl.eNotify(BasicNotifierImpl.java:247) at org.bonitasoft.studio.model.bpmn.impl.ElementImpl.setName(ElementImpl.java:203) at org.bonitasoft.studio.properties.sections.general.NameSection.refresh(NameSection.java:22) at org.eclipse.ui.views.properties.tabbed.TabContents$6.run(TabContents.java:217) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37) at org.eclipse.core.runtime.Platform.run(Platform.java:880) at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:48) at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:175) at org.eclipse.ui.views.properties.tabbed.TabContents.refresh(TabContents.java:220) at org.eclipse.ui.views.properties.tabbed.TabbedPropertySheetPage$SelectionChangedListener.selectionChanged(TabbedPropertySheetPage.java:222) at org.eclipse.jface.viewers.Viewer$2.run(Viewer.java:162) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37) at org.eclipse.core.runtime.Platform.run(Platform.java:880) at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:48) at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:175) at org.eclipse.jface.viewers.Viewer.fireSelectionChanged(Viewer.java:160) at org.eclipse.jface.viewers.StructuredViewer.updateSelection(StructuredViewer.java:2062) at org.eclipse.jface.viewers.StructuredViewer.handleSelect(StructuredViewer.java:1138) at org.eclipse.jface.viewers.StructuredViewer$4.widgetSelected(StructuredViewer.java:1168) at org.eclipse.jface.util.OpenStrategy.fireSelectionEvent(OpenStrategy.java:227) at org.eclipse.jface.util.OpenStrategy.access$3(OpenStrategy.java:221) at org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:388) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1561) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1585) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1570) at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1360) at org.eclipse.ui.internal.views.properties.tabbed.view.TabbedPropertyList.select(TabbedPropertyList.java:664) at org.eclipse.ui.internal.views.properties.tabbed.view.TabbedPropertyViewer.setSelectionToWidget(TabbedPropertyViewer.java:122) at org.eclipse.jface.viewers.StructuredViewer.setSelectionToWidget(StructuredViewer.java:1680) at org.eclipse.jface.viewers.StructuredViewer.setSelection(StructuredViewer.java:1636) at org.eclipse.jface.viewers.Viewer.setSelection(Viewer.java:392) at org.eclipse.ui.views.properties.tabbed.TabbedPropertySheetPage.setInput(TabbedPropertySheetPage.java:713) at org.eclipse.ui.views.properties.tabbed.TabbedPropertySheetPage.selectionChanged(TabbedPropertySheetPage.java:538) at org.eclipse.gmf.runtime.diagram.ui.properties.views.PropertiesBrowserPage.selectionChanged(PropertiesBrowserPage.java:253) at org.eclipse.ui.views.properties.PropertySheet.partActivated(PropertySheet.java:199) at org.eclipse.ui.part.PageBookView.showBootstrapPart(PageBookView.java:907) at org.eclipse.ui.part.PageBookView.createPartControl(PageBookView.java:482) at org.eclipse.ui.views.properties.PropertySheet.createPartControl(PropertySheet.java:98) at org.eclipse.ui.internal.ViewReference.createPartHelper(ViewReference.java:371) at org.eclipse.ui.internal.ViewReference.createPart(ViewReference.java:230) at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:594) at org.eclipse.ui.internal.Perspective.showView(Perspective.java:2131) at org.eclipse.ui.internal.WorkbenchPage.busyShowView(WorkbenchPage.java:1062) at org.eclipse.ui.internal.WorkbenchPage$19.run(WorkbenchPage.java:3773) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) at org.eclipse.ui.internal.WorkbenchPage.showView(WorkbenchPage.java:3770) at org.eclipse.ui.internal.WorkbenchPage.showView(WorkbenchPage.java:3746) at org.eclipse.gmf.runtime.common.ui.util.WorkbenchPartActivator$ShowViewRunnable.run(WorkbenchPartActivator.java:72) at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:178) at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:150) at org.eclipse.swt.widgets.Display.syncExec(Display.java:3955) at org.eclipse.gmf.runtime.common.ui.util.WorkbenchPartActivator.showView(WorkbenchPartActivator.java:129) at org.eclipse.gmf.runtime.common.ui.util.WorkbenchPartActivator.showPropertySheet(WorkbenchPartActivator.java:179) at org.eclipse.gmf.runtime.diagram.ui.actions.ShowPropertiesViewAction.doRun(ShowPropertiesViewAction.java:67) at org.eclipse.gmf.runtime.common.ui.action.AbstractActionHandler.run(AbstractActionHandler.java:359) at org.eclipse.gmf.runtime.common.ui.action.ActionManager$1.run(ActionManager.java:225) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) at org.eclipse.gmf.runtime.common.ui.action.ActionManager.run(ActionManager.java:223) at org.eclipse.gmf.runtime.common.ui.action.AbstractActionHandler.runWithEvent(AbstractActionHandler.java:377) at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:583) at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:500) 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:1561) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1585) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1570) at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1360) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3482) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3068) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2384) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2348) at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2200) at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:495) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:288) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:490) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:113) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:193) 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:386) 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:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:549) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:504) at org.eclipse.equinox.launcher.Main.run(Main.java:1236) at org.eclipse.equinox.launcher.Main.main(Main.java:1212)

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