Description Shenxue Zhou 2012-02-02 12:08:19 EST

In my adopter product, I have an action which switches an enum property (TaskFlowType). In the model, I have a Service associated with a property which is enabled by the enum property:

	// *** TemplateReference ***
	
	@Type( base = ITemplateReference.class )
	@XmlBinding( path = "template-reference")
	@Label( standard = "template reference")
	@Enablement( expr = "${root().TaskFlowType == 'Bounded' || root().TaskFlowType == 'Template'}" )
	@DependsOn("/TaskFlowType")
	@Service( impl = TemplateService.class )	
	
	ElementProperty PROP_TEMPLATE_REFERENCE = new ElementProperty( TYPE, "TemplateReference" );

	ModelElementHandle<ITemplateReference> getTemplateReference();	

When the action which switches the TaskFlowType from "Bounded" to "Unbounded" is executed, I'd get the following exception in the log:

java.lang.IllegalStateException
	at org.eclipse.sapphire.services.ServiceContext.services(ServiceContext.java:78)
	at org.eclipse.sapphire.modeling.ModelElement.services(ModelElement.java:602)
	at org.eclipse.sapphire.modeling.ModelElement.refreshPropertyEnablement(ModelElement.java:655)
	at org.eclipse.sapphire.modeling.ModelElement.access$0(ModelElement.java:626)
	at org.eclipse.sapphire.modeling.ModelElement$7.handle(ModelElement.java:640)
	at org.eclipse.sapphire.ListenerContext.broadcast(ListenerContext.java:53)
	at org.eclipse.sapphire.ListenerContext.broadcast(ListenerContext.java:64)
	at org.eclipse.sapphire.services.Service.broadcast(Service.java:99)
	at org.eclipse.sapphire.services.DataService.refresh(DataService.java:53)
	at org.eclipse.sapphire.services.internal.FunctionBasedEnablementService.access$1(FunctionBasedEnablementService.java:1)
	at org.eclipse.sapphire.services.internal.FunctionBasedEnablementService$1.handle(FunctionBasedEnablementService.java:53)
	at org.eclipse.sapphire.ListenerContext.broadcast(ListenerContext.java:53)
	at org.eclipse.sapphire.ListenerContext.broadcast(ListenerContext.java:64)
	at org.eclipse.sapphire.modeling.el.FunctionResult.refresh(FunctionResult.java:192)
	at org.eclipse.sapphire.modeling.el.FunctionResult$1.handle(FunctionResult.java:60)
	at org.eclipse.sapphire.ListenerContext.broadcast(ListenerContext.java:53)
	at org.eclipse.sapphire.ListenerContext.broadcast(ListenerContext.java:64)
	at org.eclipse.sapphire.modeling.el.FunctionResult.refresh(FunctionResult.java:192)
	at org.eclipse.sapphire.modeling.el.FunctionResult$1.handle(FunctionResult.java:60)
	at org.eclipse.sapphire.ListenerContext.broadcast(ListenerContext.java:53)
	at org.eclipse.sapphire.ListenerContext.broadcast(ListenerContext.java:64)
	at org.eclipse.sapphire.modeling.el.FunctionResult.refresh(FunctionResult.java:192)
	at org.eclipse.sapphire.modeling.el.FunctionResult$1.handle(FunctionResult.java:60)
	at org.eclipse.sapphire.ListenerContext.broadcast(ListenerContext.java:53)
	at org.eclipse.sapphire.ListenerContext.broadcast(ListenerContext.java:64)
	at org.eclipse.sapphire.modeling.el.FunctionResult.refresh(FunctionResult.java:192)
	at org.eclipse.sapphire.modeling.el.PropertyAccessFunction$1$1.handle(PropertyAccessFunction.java:93)
	at org.eclipse.sapphire.ListenerContext.broadcast(ListenerContext.java:53)
	at org.eclipse.sapphire.ListenerContext.broadcast(ListenerContext.java:64)
	at org.eclipse.sapphire.modeling.el.FunctionResult.refresh(FunctionResult.java:192)
	at org.eclipse.sapphire.modeling.el.ModelElementFunctionContext$ReadPropertyFunction$1$1.handlePropertyChangedEvent(ModelElementFunctionContext.java:189)
	at org.eclipse.sapphire.modeling.ModelElement.notifyPropertyChangeListeners(ModelElement.java:1126)
	at org.eclipse.sapphire.modeling.ModelElement.notifyPropertyChangeListeners(ModelElement.java:1089)
	at oracle.eclipse.tools.adf.controller.model.internal.TaskFlowFile.refreshProperty(TaskFlowFile.java:141)
	at org.eclipse.sapphire.modeling.ModelElement.refresh(ModelElement.java:463)
	at org.eclipse.sapphire.modeling.ModelElement.refresh(ModelElement.java:456)
	at oracle.eclipse.tools.adf.controller.model.internal.TaskFlowFile.setTaskFlowType(TaskFlowFile.java:81)
	at oracle.eclipse.tools.adf.controller.model.internal.TaskFlowFile.setTaskFlowType(TaskFlowFile.java:88)
	at oracle.eclipse.tools.adf.controller.ui.actionhandler.TaskFlowConverterHandler.run(TaskFlowConverterHandler.java:77)
	at org.eclipse.sapphire.ui.SapphireActionHandler.execute(SapphireActionHandler.java:93)
	at org.eclipse.sapphire.ui.gef.diagram.editor.SapphireActionHandlerDelegate.run(SapphireActionHandlerDelegate.java:89)
	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:4165)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3754)
	at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2696)
	at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2660)
	at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2494)
	at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:674)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:667)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:123)
	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:344)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
	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:622)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1410)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1386)