Невозможно создавать экземпляры GEF в RCP-представлении

Question

Это касается автоматизации, которую мне нужно использовать GEF в приложении RCP.

В одном из представлений мне нужно создать экземпляр GEF, но если я попытаюсь создать эти экземпляры, он выдает сообщение об ошибке, не создающее экземпляр представления.

Вот дамп ошибки

SESSION 2010-12-03 14:06:06.650 ----------------------------------------------- 
eclipse.buildId=unknown 
java.version=1.7.0-ea 
java.vendor=Sun Microsystems Inc. 
BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=en_US 
Framework arguments: -product GEFTutorial.product 
Command-line arguments: -product GEFTutorial.product -data C:\Documents and Settings\rtiragat\workspace/../runtime-GEFTutorial.product -dev file:C:/Documents and Settings/rtiragat/workspace/.metadata/.plugins/org.eclipse.pde.core/GEFTutorial.product/dev.properties -os win32 -ws win32 -arch x86 -consoleLog 

!ENTRY org.eclipse.equinox.registry 4 1 2010-12-03 14:06:09.680 
!MESSAGE Unable to create view ID GEFTutorial.view: Plug-in "GEFTutorial" was unable to instantiate class "geftutorial.View". 
!STACK 0 
java.lang.NoClassDefFoundError: org/eclipse/gef/EditPartFactory 
    at java.lang.Class.getDeclaredConstructors0(Native Method) 
    at java.lang.Class.privateGetDeclaredConstructors(Unknown Source) 
    at java.lang.Class.getConstructor0(Unknown Source) 
    at java.lang.Class.newInstance0(Unknown Source) 
    at java.lang.Class.newInstance(Unknown Source) 
    at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:184) 
    at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:904) 
    at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243) 
    at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:55) 
    at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlugin.java:259) 
    at org.eclipse.ui.internal.registry.ViewDescriptor.createView(ViewDescriptor.java:63) 
    at org.eclipse.ui.internal.ViewReference.createPartHelper(ViewReference.java:327) 
    at org.eclipse.ui.internal.ViewReference.createPart(ViewReference.java:229) 
    at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:595) 
    at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:313) 
    at org.eclipse.ui.internal.ViewPane.setVisible(ViewPane.java:529) 
    at org.eclipse.ui.internal.presentations.PresentablePart.setVisible(PresentablePart.java:180) 
    at org.eclipse.ui.internal.presentations.util.PresentablePartFolder.select(PresentablePartFolder.java:270) 
    at org.eclipse.ui.internal.presentations.util.LeftToRightTabOrder.select(LeftToRightTabOrder.java:65) 
    at org.eclipse.ui.internal.presentations.util.TabbedStackPresentation.selectPart(TabbedStackPresentation.java:473) 
    at org.eclipse.ui.internal.PartStack.refreshPresentationSelection(PartStack.java:1254) 
    at org.eclipse.ui.internal.PartStack.setSelection(PartStack.java:1207) 
    at org.eclipse.ui.internal.PartStack.showPart(PartStack.java:1606) 
    at org.eclipse.ui.internal.PartStack.createControl(PartStack.java:647) 
    at org.eclipse.ui.internal.PartStack.createControl(PartStack.java:574) 
    at org.eclipse.ui.internal.PartSashContainer.createControl(PartSashContainer.java:568) 
    at org.eclipse.ui.internal.PerspectiveHelper.activate(PerspectiveHelper.java:272) 
    at org.eclipse.ui.internal.Perspective.onActivate(Perspective.java:981) 
    at org.eclipse.ui.internal.WorkbenchPage.onActivate(WorkbenchPage.java:2632) 
    at org.eclipse.ui.internal.WorkbenchWindow$27.run(WorkbenchWindow.java:2986) 
    at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) 
    at org.eclipse.ui.internal.WorkbenchWindow.setActivePage(WorkbenchWindow.java:2967) 
    at org.eclipse.ui.internal.WorkbenchWindow.busyOpenPage(WorkbenchWindow.java:771) 
    at org.eclipse.ui.internal.Workbench$23.runWithException(Workbench.java:1221) 
    at org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31) 
    at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35) 
    at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:134) 
    at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4041) 
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3660) 
    at org.eclipse.ui.application.WorkbenchAdvisor.openWindows(WorkbenchAdvisor.java:803) 
    at org.eclipse.ui.internal.Workbench$31.runWithException(Workbench.java:1567) 
    at org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31) 
    at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35) 
    at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:134) 
    at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4041) 
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3660) 
    at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2548) 
    at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2438) 
    at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:671) 
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) 
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:664) 
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149) 
    at geftutorial.Application.start(Application.java:20) 
    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(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:619) 
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:574) 
    at org.eclipse.equinox.launcher.Main.run(Main.java:1407) 
    at org.eclipse.equinox.launcher.Main.main(Main.java:1383) 
Caused by: java.lang.ClassNotFoundException: org.eclipse.gef.EditPartFactory 
    at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:506) 
    at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:422) 
    at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:410) 
    at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107) 
    at java.lang.ClassLoader.loadClass(Unknown Source) 
    at java.lang.ClassLoader.loadClassInternal(Unknown Source) 
    ... 66 more 

Answer 1

Вы можете проверить «Shape diagram Editor» и вики «GEF_Description2» страницы, чтобы проверить, если ваш использование зрителя Здесь уместно.

См., Например, this example.