Skip to main content
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [List Home]
[ecf-dev] ECF 0.8.2 and Eclipse 3.1.2 
Hi Folks,
With recent versions (0.8.2) folks have been finding NPEs occuring in ECF when running on Eclipse 3.1.2. See below for a recently an example reported to this newsgroup, or bug https://bugs.eclipse.org/bugs/show_bug.cgi?id=143681
I've reproduced this NPE on 3.1.2. As I suspected, this *is* due to the fact that it's running on 3.1.2 and the problem does not occur on 3.2 stream. Just for background, the problem is that Eclipse 3.1.2 has a header in the bundle manifest.mf that looks like this: 

Eclipse-AutoStart: true

and this header determines whether the enclosing plugin is automatically
started when a class that it contains is accessed. This auto starting is required, otherwise perfectly legitimate calls like this: 

ClientPlugin.getDefault().getDialogSettings()
throw a NPE because the ClientPlugin.getDefault() returns null (without the AutoStart header). And getDefault() should *never* return null.
The Eclipse-AutoStart header was deprecated in 3.2 (in favor of Eclipse-LazyStart), and so we removed/changed the header in the ECF codebase in order to keep the codebase clean.
So, if you can use 3.2 for building your app then that will fix the problem. I'll see about the work involved in retrofitting the existing ECF codebase with these headers and doing additional API back-porting...but I'm not sure if it is worth it at this point. But that's what I need feedback on. Please let me know if those of you using 3.1.2 *cannot* use 3.2 but still want to use the most recent versions of ECF (i.e. 0.8.X). 

Thanks,

Scott
I use update manager to get ECF, but when I restart the workbench and click the "Connect Workspace" button, java.lang.NullPointerException is reported: 
java.lang.NullPointerException
at org.eclipse.ecf.example.collab.ui.ConnectionDialog.getDialogSettings(ConnectionDialog.java:330) at org.eclipse.ecf.example.collab.ui.ConnectionDialog.restoreDialogSettings(ConnectionDialog.java:262) at org.eclipse.ecf.example.collab.ui.ConnectionDialog.createContents(ConnectionDialog.java:191) 
    at org.eclipse.jface.window.Window.create(Window.java:418)
    at org.eclipse.jface.dialogs.Dialog.create(Dialog.java:996)
    at org.eclipse.jface.window.Window.open(Window.java:776)
at org.eclipse.ecf.example.collab.actions.NewWorkbenchAction.run(NewWorkbenchAction.java:67) at org.eclipse.ui.actions.ActionDelegate.runWithEvent(ActionDelegate.java:70) at org.eclipse.ui.internal.PluginAction.runWithEvent(PluginAction.java:236) at org.eclipse.ui.internal.WWinPluginAction.runWithEvent(WWinPluginAction.java:223) at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:538) at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:488) at org.eclipse.jface.action.ActionContributionItem$6.handleEvent(ActionContributionItem.java:441) 
    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:843)
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3125)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2758)
    at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1699)
    at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1663)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:367) 
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:143)
at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:103) at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:226) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:376) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:163) 
    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.core.launcher.Main.invokeFramework(Main.java:334)
    at org.eclipse.core.launcher.Main.basicRun(Main.java:278)
    at org.eclipse.core.launcher.Main.run(Main.java:973)
    at org.eclipse.core.launcher.Main.main(Main.java:948)
I have checked the ecf packages (include the example packages) have been installed in the plugins directory. My Eclipse version is 3.1.2. 

What's the problem?

Thanks in advance.

Back to the top