NWDS ClassCastException for Enums

[Former Member]

Hi,

using NWDS 7.1.1, when I open a java file with this content:

package test;

public enum TestEnum {

}

The editor fails to open with an exception as shown below. It appears some SAP code expects something else than EnumDeclaration in AnnotationImpl. I can work around this, using a simple text editor, I just wanted to mention it.

java.lang.ClassCastException: org.eclipse.jdt.core.dom.EnumDeclaration

at com.sap.ide.j2ee.servicelayer.annotation.impl.AnnotationImpl.getTypeDeclaration(AnnotationImpl.java:527)

at com.sap.ide.j2ee.servicelayer.annotation.impl.AnnotationImpl.getFromMember(AnnotationImpl.java:342)

at com.sap.ide.j2ee.servicelayer.annotation.impl.AnnotationImpl.getFromClass(AnnotationImpl.java:319)

at com.sap.ide.j2ee.servicelayer.annotation.factory.AnnotationUtils.getAnnotationsFromClass(AnnotationUtils.java:28)

at com.sap.ide.j2ee.ui.actions.MethodMenuActionsHandler.isSessionBean(MethodMenuActionsHandler.java:229)

at com.sap.ide.j2ee.ui.actions.editor.GeneralEditorAction.isEnabled(GeneralEditorAction.java:98)

at com.sap.ide.j2ee.ui.actions.editor.GeneralEditorAction.setActiveEditor(GeneralEditorAction.java:59)

at org.eclipse.ui.internal.EditorPluginAction.editorChanged(EditorPluginAction.java:75)

at org.eclipse.ui.internal.EditorPluginAction.<init>(EditorPluginAction.java:34)

at org.eclipse.ui.internal.ActionDescriptor.createAction(ActionDescriptor.java:256)

at org.eclipse.ui.internal.ActionDescriptor.<init>(ActionDescriptor.java:170)

at org.eclipse.ui.internal.ViewerActionBuilder.createActionDescriptor(ViewerActionBuilder.java:53)

at org.eclipse.ui.internal.PluginActionBuilder.readElement(PluginActionBuilder.java:158)

at org.eclipse.ui.internal.ViewerActionBuilder.readElement(ViewerActionBuilder.java:88)

at org.eclipse.ui.internal.registry.RegistryReader.readElements(RegistryReader.java:138)

at org.eclipse.ui.internal.registry.RegistryReader.readElementChildren(RegistryReader.java:127)

at org.eclipse.ui.internal.PluginActionBuilder.readElement(PluginActionBuilder.java:141)

at org.eclipse.ui.internal.ViewerActionBuilder.readElement(ViewerActionBuilder.java:88)

at org.eclipse.ui.internal.registry.RegistryReader.readElements(RegistryReader.java:138)

at org.eclipse.ui.internal.registry.RegistryReader.readExtension(RegistryReader.java:149)

at org.eclipse.ui.internal.registry.RegistryReader.readRegistry(RegistryReader.java:170)

at org.eclipse.ui.internal.PluginActionBuilder.readContributions(PluginActionBuilder.java:112)

at org.eclipse.ui.internal.ViewerActionBuilder.readViewerContributions(ViewerActionBuilder.java:106)

at org.eclipse.ui.internal.PopupMenuExtender.readStaticActionsFor(PopupMenuExtender.java:452)

at org.eclipse.ui.internal.PopupMenuExtender.<init>(PopupMenuExtender.java:132)

at org.eclipse.ui.internal.PartSite.registerContextMenu(PartSite.java:118)

at org.eclipse.ui.internal.EditorSite.registerContextMenu(EditorSite.java:165)

at org.eclipse.ui.texteditor.AbstractTextEditor.createPartControl(AbstractTextEditor.java:3282)

at org.eclipse.ui.texteditor.StatusTextEditor.createPartControl(StatusTextEditor.java:53)

at org.eclipse.ui.texteditor.AbstractDecoratedTextEditor.createPartControl(AbstractDecoratedTextEditor.java:378)

at org.eclipse.jdt.internal.ui.javaeditor.JavaEditor.createPartControl(JavaEditor.java:2618)

at org.eclipse.jdt.internal.ui.javaeditor.CompilationUnitEditor.createPartControl(CompilationUnitEditor.java:1416)

at org.eclipse.ui.internal.EditorReference.createPartHelper(EditorReference.java:661)

at org.eclipse.ui.internal.EditorReference.createPart(EditorReference.java:426)

at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:592)

at org.eclipse.ui.internal.EditorReference.getEditor(EditorReference.java:263)

at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched(WorkbenchPage.java:2739)

at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:2651)

at org.eclipse.ui.internal.WorkbenchPage.access$13(WorkbenchPage.java:2643)

at org.eclipse.ui.internal.WorkbenchPage$10.run(WorkbenchPage.java:2595)

at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:67)

at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2590)

at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2574)

at org.eclipse.ui.actions.OpenWithMenu.openEditor(OpenWithMenu.java:340)

at org.eclipse.ui.actions.OpenWithMenu.access$0(OpenWithMenu.java:328)

at org.eclipse.ui.actions.OpenWithMenu$2.handleEvent(OpenWithMenu.java:190)

at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)

at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:938)

at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3682)

at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3293)

at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2389)

at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2353)

at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2219)

at org.eclipse.ui.internal.Workbench$4.run(Workbench.java:466)

at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:289)

at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:461)

at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)

at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:106)

at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:169)

at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:106)

at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:76)

at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:363)

at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:176)

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:508)

at org.eclipse.equinox.launcher.Main.basicRun(Main.java:447)

at org.eclipse.equinox.launcher.Main.run(Main.java:1173)

[Former Member]

Assuming Update would cure the issue.

[Former Member]

Hi,

Set Compiler compliance Level to 1.4.XX. "Enum" is an reserved word in Java5 and higher.

Regards,

Daniel

[Former Member]

Of course it is a reserved keyword in 1.5, and I want to use that keyword in the way it is intended to be used in 1.5.

same happens for:

public enum Test {

}

So setting compiler compliance to 1.4 is not a solution to my problem. I want to use Enum's as defined in 1.5, and NWDS can't cope with opening such enum's (though as I said, if I open a "class" and change it to be an enum, the editor works fine).

[Former Member]

HI,

Sorry wrong answer to right question. Tried to recreate your problem, but everthing seems to work fine. Seems a bug in NWDS CE SP1. For your info, tried it on NWDS CE SP3 and everything works fine. Maybe an upgrade of NWDS helps.

regards,

Daniel

[Former Member]

Possibly an update would help.

I use

SAP NetWeaver Developer Studio

SAP NetWeaver 7.1.1 EhP 1 SP05 PAT0000

Build id: 200712202313

But I don't think I will update soon, so I won't be able to confirm.

Edited by: Thibault Kruse on Feb 8, 2008 2:12 PM

[Former Member]

Hi,

Go to Window Preferences->Java->Compiler->

Set the Compiler compliance level to 5.0.

Hope it should resolve your error.

Regards

Ayyapparaj

[Former Member]

Sorry, but the Setting already was on 5.0, and setting it to 6.0 also did not help.

Note that I can create a java class, open it, then change it to be an enum, and then edit it.

Highlighting and errors are then adequate for a java enumeration.

However closing the editor and reopening it will yield the same Exeption, of course.