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What steps will reproduce the problem? 1. Open "SpringSource Tool Suite" eclipse Flavor (I don't know if this problem exists on another IDE) 2. Create new Web Project 3. Add Spring Libraries 4. Try to obtain Content Assist on class "CronTriggerBean" from Spring. It generates the error, and you cannot use the Content Assist. You can restart the IDE... and it has the same problems. -- Error Details -- Date: Tue Oct 11 21:19:58 COT 2011 Message: The 'org.eclipse.mylyn.java.ui.javaAllCompletionProposalComputer' proposal computer from the 'org.eclipse.mylyn.java.ui' plug-in did not complete normally. The extension has thrown a runtime exception. Severity: Warning Product: SpringSource Tool Suite 2.7.2.201109131000-RELEASE (com.springsource.sts.ide) Plugin: org.eclipse.jdt.ui Session Data: eclipse.buildId=2.7.2.201109131000-RELEASE java.version=1.6.0_25 java.vendor=Sun Microsystems Inc. BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=es_CO Framework arguments: -product com.springsource.sts.ide Command-line arguments: -os win32 -ws win32 -arch x86 -product com.springsource.sts.ide Exception Stack Trace: java.lang.NullPointerException at org.eclipse.jdt.internal.codeassist.CompletionEngine.findLocalMethods(CompletionEngine.java:8340) at org.eclipse.jdt.internal.codeassist.CompletionEngine.findMethods(CompletionEngine.java:9776) at org.eclipse.jdt.internal.codeassist.CompletionEngine.findFieldsAndMethods(CompletionEngine.java:6655) at org.eclipse.jdt.internal.codeassist.CompletionEngine.completionOnQualifiedNameReference(CompletionEngine.java:2987) at org.eclipse.jdt.internal.codeassist.CompletionEngine.complete(CompletionEngine.java:1654) at org.eclipse.jdt.internal.codeassist.CompletionEngine.complete(CompletionEngine.java:1874) at org.eclipse.jdt.internal.core.Openable.codeComplete_aroundBody0(Openable.java:130) at org.eclipse.jdt.internal.core.Openable.codeComplete_aroundBody1$advice(Openable.java:294) at org.eclipse.jdt.internal.core.Openable.codeComplete(Openable.java:1) at org.eclipse.jdt.internal.core.CompilationUnit.codeComplete(CompilationUnit.java:357) at org.eclipse.jdt.internal.core.CompilationUnit.codeComplete(CompilationUnit.java:345) at org.eclipse.jdt.internal.ui.text.java.JavaCompletionProposalComputer.internalComputeCompletionProposals(JavaCompletionProposalComputer.java:244) at org.eclipse.jdt.internal.ui.text.java.JavaCompletionProposalComputer.computeCompletionProposals(JavaCompletionProposalComputer.java:206) at org.eclipse.mylyn.internal.java.ui.editor.FocusedJavaAllProposalComputer.computeCompletionProposals(FocusedJavaAllProposalComputer.java:96) at org.eclipse.jdt.internal.ui.text.java.CompletionProposalComputerDescriptor.computeCompletionProposals(CompletionProposalComputerDescriptor.java:318) at org.eclipse.jdt.internal.ui.text.java.CompletionProposalCategory.computeCompletionProposals(CompletionProposalCategory.java:267) at org.eclipse.jdt.internal.ui.text.java.ContentAssistProcessor.collectProposals(ContentAssistProcessor.java:283) at org.eclipse.jdt.internal.ui.text.java.ContentAssistProcessor.computeCompletionProposals(ContentAssistProcessor.java:243) at org.eclipse.jface.text.contentassist.ContentAssistant.computeCompletionProposals(ContentAssistant.java:1830) at org.eclipse.jface.text.contentassist.CompletionProposalPopup.computeProposals(CompletionProposalPopup.java:556) at org.eclipse.jface.text.contentassist.CompletionProposalPopup.access$16(CompletionProposalPopup.java:553) at org.eclipse.jface.text.contentassist.CompletionProposalPopup$2.run(CompletionProposalPopup.java:488) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) at org.eclipse.jface.text.contentassist.CompletionProposalPopup.showProposals(CompletionProposalPopup.java:482) at org.eclipse.jface.text.contentassist.ContentAssistant.showPossibleCompletions(ContentAssistant.java:1656) at org.eclipse.jdt.internal.ui.javaeditor.CompilationUnitEditor$AdaptedSourceViewer.doOperation(CompilationUnitEditor.java:183) at org.eclipse.ui.texteditor.ContentAssistAction$1.run(ContentAssistAction.java:82) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) at org.eclipse.ui.texteditor.ContentAssistAction.run(ContentAssistAction.java:80) at org.eclipse.jface.action.Action.runWithEvent(Action.java:498) at org.eclipse.ui.commands.ActionHandler.execute(ActionHandler.java:185) at org.eclipse.ui.internal.handlers.LegacyHandlerWrapper.execute(LegacyHandlerWrapper.java:109) at org.eclipse.core.commands.Command.executeWithChecks(Command.java:476) at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:508) at org.eclipse.ui.internal.handlers.HandlerService.executeCommand(HandlerService.java:169) at org.eclipse.ui.internal.keys.WorkbenchKeyboard.executeCommand(WorkbenchKeyboard.java:468) at org.eclipse.ui.internal.keys.WorkbenchKeyboard.press(WorkbenchKeyboard.java:786) at org.eclipse.ui.internal.keys.WorkbenchKeyboard.processKeyEvent(WorkbenchKeyboard.java:885) at org.eclipse.ui.internal.keys.WorkbenchKeyboard.filterKeySequenceBindings(WorkbenchKeyboard.java:567) at org.eclipse.ui.internal.keys.WorkbenchKeyboard.access$3(WorkbenchKeyboard.java:508) at org.eclipse.ui.internal.keys.WorkbenchKeyboard$KeyDownFilter.handleEvent(WorkbenchKeyboard.java:123) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.filterEvent(Display.java:1262) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1052) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1077) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1062) at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1104) at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1100) at org.eclipse.swt.widgets.Widget.wmChar(Widget.java:1509) at org.eclipse.swt.widgets.Control.WM_CHAR(Control.java:4640) at org.eclipse.swt.widgets.Canvas.WM_CHAR(Canvas.java:345) at org.eclipse.swt.widgets.Control.windowProc(Control.java:4528) at org.eclipse.swt.widgets.Canvas.windowProc(Canvas.java:341) at org.eclipse.swt.widgets.Display.windowProc(Display.java:4972) at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method) at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java:2530) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3752) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2696) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2660) at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2494) at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:674) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:667) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:123) 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:344) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179) 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:597) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577) at org.eclipse.equinox.launcher.Main.run(Main.java:1410) at org.eclipse.equinox.launcher.Main.main(Main.java:1386)
Spring 2.7.2 is using Eclipse 3.7 and hence the attached stack dump should be used accordingly.
(In reply to comment #0) > What steps will reproduce the problem? > 1. Open "SpringSource Tool Suite" eclipse Flavor (I don't know if this problem > exists on another IDE) > 2. Create new Web Project > 3. Add Spring Libraries > 4. Try to obtain Content Assist on class "CronTriggerBean" from Spring. It > generates the error, and you cannot use the Content Assist. You can restart the > IDE... and it has the same problems. What spring libraries need to be added?
The problem presents when you have class A who extends class B, but you have selected a different version of class B and some methods has changed / deleted from classB. When you try to autocomplete the class A, the IDE don't know which methods had A class, because the original compiled signature of A methods differ from actual methods... I think Eclipse should generate a better message for this kind of problems.
Verified for 3.8 M3
