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Dawn FAQ
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While creating a diagram I recieve a "Diagram not present in resource" message
Question: While creating a diagram with the Dawn Wizard I recieve a "Diagram not present in resource" message. This is accompanied by the following exception.
org.eclipse.core.commands.ExecutionException: While executing the operation, an exception occurred at org.eclipse.core.commands.operations.DefaultOperationHistory.execute(DefaultOperationHistory.java:519) at org.eclipse.emf.cdo.dawn.examples.acore.diagram.part.DawnAcoreDiagramEditorUtil.createDiagram(DawnAcoreDiagramEditorUtil.java:161) at org.eclipse.emf.cdo.dawn.examples.acore.diagram.part.DawnAcoreCreationWizard$1.execute(DawnAcoreCreationWizard.java:68) at org.eclipse.ui.actions.WorkspaceModifyOperation$1.run(WorkspaceModifyOperation.java:106) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1975) at org.eclipse.ui.actions.WorkspaceModifyOperation.run(WorkspaceModifyOperation.java:118) at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:464) at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:372) at org.eclipse.jface.wizard.WizardDialog.run(WizardDialog.java:1002) at org.eclipse.emf.cdo.dawn.examples.acore.diagram.part.DawnAcoreCreationWizard.performFinish(DawnAcoreCreationWizard.java:86) at org.eclipse.jface.wizard.WizardDialog.finishPressed(WizardDialog.java:810) at org.eclipse.jface.wizard.WizardDialog.buttonPressed(WizardDialog.java:429) at org.eclipse.jface.dialogs.Dialog$2.widgetSelected(Dialog.java:624) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:228) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1050) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4037) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3628) at org.eclipse.jface.window.Window.runEventLoop(Window.java:825) at org.eclipse.jface.window.Window.open(Window.java:801) at org.eclipse.ui.internal.handlers.WizardHandler$New.executeHandler(WizardHandler.java:254) at org.eclipse.ui.internal.handlers.WizardHandler.execute(WizardHandler.java:274) at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:293) at org.eclipse.core.commands.Command.executeWithChecks(Command.java:476) at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:508) at org.eclipse.ui.internal.handlers.HandlerService.executeCommand(HandlerService.java:169) at org.eclipse.ui.internal.handlers.SlaveHandlerService.executeCommand(SlaveHandlerService.java:241) at org.eclipse.ui.internal.actions.CommandAction.runWithEvent(CommandAction.java:157) 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:1050) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4037) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3628) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2416) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2380) at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2229) at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:504) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:497) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:115) 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: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:619) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:574) at org.eclipse.equinox.launcher.Main.run(Main.java:1406) at org.eclipse.equinox.launcher.Main.main(Main.java:1382) Caused by: java.lang.IllegalStateException: No transaction available at org.eclipse.emf.cdo.eresource.impl.CDOResourceImpl.getTransaction(CDOResourceImpl.java:750) at org.eclipse.emf.cdo.eresource.impl.CDOResourceImpl.save(CDOResourceImpl.java:717) at org.eclipse.emf.cdo.dawn.examples.acore.diagram.part.DawnAcoreDiagramEditorUtil$1.doExecuteWithResult(DawnAcoreDiagramEditorUtil.java:149) at org.eclipse.gmf.runtime.emf.commands.core.command.AbstractTransactionalCommand.doExecute(AbstractTransactionalCommand.java:247) at org.eclipse.emf.workspace.AbstractEMFOperation.execute(AbstractEMFOperation.java:150) at org.eclipse.core.commands.operations.DefaultOperationHistory.execute(DefaultOperationHistory.java:511) ... 55 more
Answer: Dawn currently only supports repository configurations where the "overrideUUID" properties is set to "" like this:
<property name="overrideUUID" value="" />
Do not forget to resart the server afterwards.