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Per https://bugs.eclipse.org/bugs/show_bug.cgi?id=487943 , DefaultContentProvider has been retired and removed. The WAR Products UI has ContentProviders that extend that class. e.g. when your WAR product config has an error, the following exception will be logged: java.lang.NoClassDefFoundError: org/eclipse/libra/warproducts/ui/validation/PluginStatusDialogContentProvider at org.eclipse.libra.warproducts.ui.validation.PluginStatusContentVisualizer.createControls(PluginStatusContentVisualizer.java:27) at org.eclipse.libra.warproducts.ui.exportwizard.ValidationPage.createControl(ValidationPage.java:54) at org.eclipse.jface.wizard.Wizard.createPageControls(Wizard.java:175) at org.eclipse.jface.wizard.WizardDialog.createPageControls(WizardDialog.java:696) at org.eclipse.jface.wizard.WizardDialog.createContents(WizardDialog.java:588) at org.eclipse.jface.window.Window.create(Window.java:426) at org.eclipse.jface.dialogs.Dialog.create(Dialog.java:1095) at org.eclipse.libra.warproducts.ui.editor.WARProductExportAction.run(WARProductExportAction.java:56) at org.eclipse.libra.warproducts.ui.editor.OverviewPage.linkActivated(OverviewPage.java:83) at org.eclipse.ui.forms.widgets.FormText.activateLink(FormText.java:1577) at org.eclipse.ui.forms.widgets.FormText.handleMouseClick(FormText.java:1386) at org.eclipse.ui.forms.widgets.FormText.access$16(FormText.java:1357) at org.eclipse.ui.forms.widgets.FormText$6.mouseUp(FormText.java:455) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:221) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4410) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1079) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4228) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3816) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1121) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1022) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:150) at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:687) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:604) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:138) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243) 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:673) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:610) at org.eclipse.equinox.launcher.Main.run(Main.java:1519) See also https://www.eclipse.org/forums/index.php/m/1737556/
Created attachment 263034 [details] Suggested patch against master (c5aecb8f593759275b76c374f36d24b3f7732744)
Is there a way to get the patch installed?
You could check out my git branch into an empty Eclipse workspace (you only need the "org.eclipse.libra.warproducts.ui" plugin): https://github.com/hannibal218bc/libra/tree/_hannibal218bc and then create an "Eclipse Application" launch config to start your usual development workspace with the patched plugin in effect -- there might be other ways to do this, but that's what I'm doing now.
Fixed with commit https://github.com/eclipse/libra/commit/48fd1c245ad666f2c459f41cd9d29cf53cfd0090 Fix version R-0.3.1-201609011955 see mailing list post by Kaloyan: http://dev.eclipse.org/mhonarc/lists/libra-dev/msg00182.html
*** Bug 496727 has been marked as a duplicate of this bug. ***
