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Build 20020418 After restarting after the deadlock in bug 14191, I did an Open Type. I got an internal error for the second stack below (both were in the log). The first one is an error in the hierarchy view restoring itself. Should check for null input returned from JavaCore.create(elementId) [line 1214]. No indication in the log for why JavaCore.create returned null. The second one looks like OpenTypeHierarchyUtil.openInViewPart is not prepared to get an ErrorViewPart back. <log-entry date="Fri Apr 19 00:06:38 EDT 2002"> <status plugin-id="org.eclipse.ui" severity="WARNING" message="Problems occurred when invoking code from plug-in: org.eclipse.ui." code="2"> <exception message="null" trace=" java.lang.NullPointerException at org.eclipse.jdt.internal.ui.typehierarchy.TypeHierarchyViewPart.restoreState (TypeHierarchyViewPart.java:1214) at org.eclipse.jdt.internal.ui.typehierarchy.TypeHierarchyViewPart.createPartContr ol(TypeHierarchyViewPart.java:655) at org.eclipse.ui.internal.PartPane$1.run(PartPane.java:53) at org.eclipse.core.internal.runtime.InternalPlatform.run (InternalPlatform.java:782) at org.eclipse.core.runtime.Platform.run(Platform.java:411) at org.eclipse.ui.internal.PartPane.createChildControl (PartPane.java:51) at org.eclipse.ui.internal.PartPane.createControl(PartPane.java:93) at org.eclipse.ui.internal.ViewPane.createControl(ViewPane.java:178) at org.eclipse.ui.internal.PartTabFolder.createPartTab (PartTabFolder.java:245) at org.eclipse.ui.internal.PartTabFolder.createControl (PartTabFolder.java:217) at org.eclipse.ui.internal.PartSashContainer.createControl (PartSashContainer.java:177) at org.eclipse.ui.internal.PerspectivePresentation.activate (PerspectivePresentation.java:89) at org.eclipse.ui.internal.Perspective.onActivate(Perspective.java:575) at org.eclipse.ui.internal.WorkbenchPage.onActivate (WorkbenchPage.java:1437) at org.eclipse.ui.internal.WorkbenchWindow$6.run (WorkbenchWindow.java:1068) at org.eclipse.swt.custom.BusyIndicator.showWhile (BusyIndicator.java:56) at org.eclipse.ui.internal.WorkbenchWindow.setActivePage (WorkbenchWindow.java:1055) at org.eclipse.ui.internal.WorkbenchWindow.restoreState (WorkbenchWindow.java:972) at org.eclipse.ui.internal.Workbench.restoreState(Workbench.java:791) at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:638) at org.eclipse.core.internal.runtime.InternalPlatform.run (InternalPlatform.java:782) at org.eclipse.core.runtime.Platform.run(Platform.java:411) at org.eclipse.ui.internal.Workbench.openPreviousWorkbenchState (Workbench.java:616) at org.eclipse.ui.internal.Workbench.openWindows(Workbench.java:674) at org.eclipse.ui.internal.Workbench.init(Workbench.java:509) at org.eclipse.ui.internal.Workbench.run(Workbench.java:813) at org.eclipse.core.internal.boot.InternalBootLoader.run (InternalBootLoader.java:643) at org.eclipse.core.boot.BootLoader.run(BootLoader.java:349) at java.lang.reflect.Method.invoke(Native Method) at org.eclipse.core.launcher.Main.basicRun(Main.java:195) at org.eclipse.core.launcher.Main.run(Main.java:541) at org.eclipse.core.launcher.Main.main(Main.java:396) "> </exception> </status> </log-entry> <log-entry date="Fri Apr 19 00:15:11 EDT 2002"> <status plugin-id="org.eclipse.core.resources" severity="INFO" message="Unhandled exception caught in event loop." code="4"> </status> </log-entry> <log-entry date="Fri Apr 19 00:15:12 EDT 2002"> <status plugin-id="org.eclipse.ui" severity="ERROR" message="org.eclipse.ui.internal.ViewPane$1$ErrorViewPart" code="0"> <exception message="org.eclipse.ui.internal.ViewPane$1$ErrorViewPart" trace=" java.lang.ClassCastException: org.eclipse.ui.internal.ViewPane$1$ErrorViewPart at org.eclipse.jdt.internal.ui.util.OpenTypeHierarchyUtil.openInViewPart (OpenTypeHierarchyUtil.java:129) at org.eclipse.jdt.internal.ui.util.OpenTypeHierarchyUtil.open (OpenTypeHierarchyUtil.java:105) at org.eclipse.jdt.internal.ui.actions.OpenTypeAction.run (OpenTypeAction.java:59) at org.eclipse.jdt.internal.ui.actions.OpenTypeAction.run (OpenTypeAction.java:76) at org.eclipse.ui.internal.PluginAction.runWithEvent (PluginAction.java:202) at org.eclipse.ui.internal.WWinPluginAction.runWithEvent (WWinPluginAction.java:162) at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection (ActionContributionItem.java:407) at org.eclipse.jface.action.ActionContributionItem.handleWidgetEvent (ActionContributionItem.java:361) at org.eclipse.jface.action.ActionContributionItem.access$0 (ActionContributionItem.java:352) at org.eclipse.jface.action.ActionContributionItem$ActionListener.handleEvent (ActionContributionItem.java:47) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:75) at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:637) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:1412) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:1208) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:833) at org.eclipse.ui.internal.Workbench.run(Workbench.java:816) at org.eclipse.core.internal.boot.InternalBootLoader.run (InternalBootLoader.java:643) at org.eclipse.core.boot.BootLoader.run(BootLoader.java:349) at java.lang.reflect.Method.invoke(Native Method) at org.eclipse.core.launcher.Main.basicRun(Main.java:195) at org.eclipse.core.launcher.Main.run(Main.java:541) at org.eclipse.core.launcher.Main.main(Main.java:396) "> </exception>
Here's a clue for why restore may have failed. In the workbench.xml was the following memento for the hierarchy view: - <view id="org.eclipse.jdt.ui.TypeHierarchy"> <viewState hidefields="false" hidenonpublic="false" hidestatic="false" input="=org.eclipse.jdt.ui/ui<org.eclipse.jdt.internal.ui.dialogs {TwoPaneElementSelector.java[TwoPaneElementSelector" mv_vertical_scroll="0" orientation="0" ratio="350" selection="=org.eclipse.jdt.junit//org.eclipse.jdt.junit/junitsupport.jar<org.e clipse.jdt.internal.junit.launcher(TestSelectionDialog.class [TestSelectionDialog" showinherited="false" vertical_scroll="0" view="2" /> </view> It refers to TwoPaneElementSelector.java which I had been working on last night (with JDT UI source in my workspace). As bug 14191 describes, tonight I had imported all projects as binary except for org.eclipse.ui, so this overwrote JDT UI. Eclipse then crashed. So, on subsequent restore, the CU referred to by the memento no longer existed in the workspace.
restoring from a memento has to handle the case that an element stored in the memento no longer exists. I will check in our other views as well.
Packages view has a similar problem and it will result in null elements in the selection. Martin please move bug back to inbox when done.
fixed in TypeHierarchyViewPart > 20020418
*** Bug 14990 has been marked as a duplicate of this bug. ***
fixed packages view. Dani pls check the Java Browsing views.
Ok for Java Browsing views. Closing the BR.
