Description Moritz Eysholdt 2011-12-02 08:36:01 EST

steps to reproduce:

1. create a new xtext project
2. execute workflow
3. launch runtime workspace
4. create a new prjoect adn file in your new language

watch the exception below being thrown. This exception is thrown if the language does not xtend Xbase. ....I mean, extend.

Adding "org.eclipse.xtext.xbase.ui" to the ui project of your language fixes the problem. This dependency, imho, should only be necessary for languages based on Xbase.

org.eclipse.core.runtime.CoreException: org.eclipse.xtext.xbase.ui.hierarchy.QuickTypeHierarchyHandler ExtensionFactory: org.xtext.example.mydsl.ui.MyDslFooExecutableExtensionFactory
	at org.eclipse.xtext.ui.guice.AbstractGuiceAwareExecutableExtensionFactory.create(AbstractGuiceAwareExecutableExtensionFactory.java:57)
	at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:262)
	at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:55)
	at org.eclipse.ui.internal.handlers.HandlerProxy.loadHandler(HandlerProxy.java:350)
	at org.eclipse.ui.internal.handlers.HandlerProxy.isEnabled(HandlerProxy.java:319)
	at org.eclipse.core.commands.Command.isEnabled(Command.java:833)
	at org.eclipse.core.commands.Command.setHandler(Command.java:996)
	at org.eclipse.ui.internal.handlers.HandlerAuthority.updateCommand(HandlerAuthority.java:459)
	at org.eclipse.ui.internal.handlers.HandlerAuthority.processChangedCommands(HandlerAuthority.java:638)
	at org.eclipse.ui.internal.handlers.HandlerAuthority.access$1(HandlerAuthority.java:610)
	at org.eclipse.ui.internal.handlers.HandlerAuthority$1.propertyChange(HandlerAuthority.java:175)
	at org.eclipse.ui.internal.services.EvaluationAuthority$1.run(EvaluationAuthority.java:252)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
	at org.eclipse.ui.internal.services.EvaluationAuthority.fireServiceChange(EvaluationAuthority.java:246)
	at org.eclipse.ui.internal.services.EvaluationAuthority.endSourceChange(EvaluationAuthority.java:197)
	at org.eclipse.ui.internal.services.EvaluationAuthority.sourceChanged(EvaluationAuthority.java:135)
	at org.eclipse.ui.internal.services.ExpressionAuthority.sourceChanged(ExpressionAuthority.java:311)
	at org.eclipse.ui.internal.services.ExpressionAuthority.sourceChanged(ExpressionAuthority.java:290)
	at org.eclipse.ui.AbstractSourceProvider.fireSourceChanged(AbstractSourceProvider.java:99)
	at org.eclipse.ui.internal.services.WorkbenchSourceProvider.checkActivePart(WorkbenchSourceProvider.java:401)
	at org.eclipse.ui.internal.services.WorkbenchSourceProvider.checkActivePart(WorkbenchSourceProvider.java:300)
	at org.eclipse.ui.internal.services.WorkbenchSourceProvider.handleCheck(WorkbenchSourceProvider.java:286)
	at org.eclipse.ui.internal.services.WorkbenchSourceProvider.checkOtherSources(WorkbenchSourceProvider.java:855)
	at org.eclipse.ui.internal.services.WorkbenchSourceProvider$6.handleEvent(WorkbenchSourceProvider.java:839)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
	at org.eclipse.swt.widgets.Display.filterEvent(Display.java:1262)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1052)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1077)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1058)
	at org.eclipse.swt.widgets.Decorations.WM_ACTIVATE(Decorations.java:1647)
	at org.eclipse.swt.widgets.Shell.WM_ACTIVATE(Shell.java:2137)
	at org.eclipse.swt.widgets.Control.windowProc(Control.java:4525)
	at org.eclipse.swt.widgets.Canvas.windowProc(Canvas.java:341)
	at org.eclipse.swt.widgets.Decorations.windowProc(Decorations.java:1610)
	at org.eclipse.swt.widgets.Shell.windowProc(Shell.java:2061)
	at org.eclipse.swt.widgets.Display.windowProc(Display.java:4972)
	at org.eclipse.swt.internal.win32.OS.BringWindowToTop(Native Method)
	at org.eclipse.swt.widgets.Decorations.bringToTop(Decorations.java:230)
	at org.eclipse.swt.widgets.Shell.open(Shell.java:1217)
	at org.eclipse.jface.window.Window.open(Window.java:797)
	at org.eclipse.ui.internal.WorkbenchWindow.open(WorkbenchWindow.java:818)
	at org.eclipse.ui.internal.Workbench$70.runWithException(Workbench.java:3719)
	at org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31)
	at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
	at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
	at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4140)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3757)
	at org.eclipse.ui.application.WorkbenchAdvisor.openWindows(WorkbenchAdvisor.java:803)
	at org.eclipse.ui.internal.Workbench$33.runWithException(Workbench.java:1595)
	at org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31)
	at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
	at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
	at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4140)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3757)
	at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2604)
	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)
Caused by: java.lang.ClassNotFoundException: org.eclipse.xtext.xbase.ui.hierarchy.QuickTypeHierarchyHandler
	at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:513)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:429)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:417)
	at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at org.eclipse.osgi.internal.loader.BundleLoader.loadClass(BundleLoader.java:345)
	at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:229)
	at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(AbstractBundle.java:1207)
	at org.eclipse.xtext.ui.guice.AbstractGuiceAwareExecutableExtensionFactory.create(AbstractGuiceAwareExecutableExtensionFactory.java:48)
	... 73 more