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| Re: perspective with endless console error messages [message #987334 is a reply to message #987291] |
Mon, 26 November 2012 08:28   |
 Dani Megert
Messages: 3802
Registered: July 2009 |
Senior Member |
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On 26.11.2012 02:15, Andreas Gronert wrote:
> Hello dear Eclipse Community,
> I'm pretty new to Eclipse programming and I'm making myself
> comfortable with perspectives. Therefore I have created a very simple
> basic perspective as only contribution to a new plugin project.
> When launching as Eclipse application the first time (out of my
> development workspace) and open the perspective all is fine. When
> launching it the second time and all following launches result in
> showing endless error message at the console.
See https://bugs.eclipse.org/388516
Dani
>
> Please have a look down here for details, i.e. the Eclipse version,
> the plugin.xml, the class and finally the endless error message.
>
> You can easily reproduce this problem by
>
> - creating a new plugin project with no template - selecting the
> Extension tab from plugin.xml
> - press ADD Button
> - select the extension point org.eclipse.ui.perspectives
> - add a new perspective (per context menu -> new -> perspectives)
> - specify the id, name and class or leave the default
> - click the class link, what will open the "New Class" wizard
> - take all default values and click finisch to generate the class
> - save all
> - run the plugin the first time and open the new perspective with no
> problem
> - run the plugin the second time with the error messages at the console
> Kind regards
> Andreas Gronert
>
>
>
> <<< Eclipse version
>
> Eclipse for RCP and RAP Developers
>
> Version: Juno Service Release 1
> Build id: 20120920-0800
>
> (c) Copyright Eclipse contributors and others 2000, 2012. All rights
> reserved.
> Visit <link not posible>
>
> This product includes software developed by the
> Apache Software Foundation <link not posible>
>
>
>
>
> <<< plugin.xml
>
> <?xml version="1.0" encoding="UTF-8"?>
> <?eclipse version="3.4"?>
> <plugin>
> <extension
> point="org.eclipse.ui.perspectives">
> <perspective
> class="andi.perspektive.AndiPerspektive"
> id="andi.perspektive.perspective1"
> name="Andis Perspektive">
> </perspective>
> </extension>
> </plugin>
>
>
>
>
> <<< Class of Perspectivepackage andi.perspektive;
>
> import org.eclipse.ui.IPageLayout;
> import org.eclipse.ui.IPerspectiveFactory;
>
> public class AndiPerspektive implements IPerspectiveFactory {
>
> @Override
> public void createInitialLayout(IPageLayout layout) {
> // TODO Auto-generated method stub
> }
> }
>
>
>
>
> <<< endless error (excerpt, that will be printed endless at console)
>
> !ENTRY org.eclipse.e4.ui.workbench.renderers.swt 4 2 2012-11-25
> 19:07:57.549
> !MESSAGE Problems occurred when invoking code from plug-in:
> "org.eclipse.e4.ui.workbench.renderers.swt".
> !STACK 0
> java.lang.NullPointerException
> at
> org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.canExecuteItem(HandledContributionItem.java:823)
> at
> org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.access$2(HandledContributionItem.java:817)
> at
> org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem$3.run(HandledContributionItem.java:216)
> at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
> at
> org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.updateItemEnablement(HandledContributionItem.java:243)
> at
> org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem$ToolItemUpdateTimer.run(HandledContributionItem.java:146)
> at org.eclipse.swt.widgets.Display.runTimer(Display.java:4270)
> at org.eclipse.swt.widgets.Display.messageProc(Display.java:3357)
> at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method)
> at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java:2546)
> at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3756)
> at
> org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1029)
> at
> org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
> at
> org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:923)
> at
> org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:86)
> at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:588)
> at
> org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
> at
> org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:543)
> at
> org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
> at
> org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)
> 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:353)
> at
> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
> 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:629)
> at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
> at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
> at org.eclipse.equinox.launcher.Main.main(Main.java:1414)
>
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