Bug 118798 - Unexpected JME on IMethod.getParameterNames
Summary: Unexpected JME on IMethod.getParameterNames
Status: VERIFIED FIXED
Alias: None
Product: JDT
Classification: Eclipse Project
Component: Core (show other bugs)
Version: 3.2   Edit
Hardware: PC Windows XP
: P3 normal (vote)
Target Milestone: 3.2 M4   Edit
Assignee: Olivier Thomann CLA
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Reported: 2005-12-01 06:07 EST by Martin Aeschlimann CLA
Modified: 2005-12-12 12:10 EST (History)
1 user (show)

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Description Martin Aeschlimann CLA 2005-12-01 06:07:33 EST
20051201

I found the following exception in the log, don't know how to reproduce.
The stacktrace looks wrong. IMethod.getParameterNames should only throw an exception when the IMethod does not exist. A problem reading the attached Javadoc should be cought in BinaryMethod.getParameterNames and result in the default names 'arg1, arg2....'

Java Model Exception: Java Model Status []
	at org.eclipse.jdt.internal.core.BinaryMethod.getAttachedJavadoc(BinaryMethod.java:484)
	at org.eclipse.jdt.internal.core.BinaryMethod.getParameterNames(BinaryMethod.java:202)
	at org.eclipse.jdt.ui.JavaElementLabels.getMethodLabel(JavaElementLabels.java:500)
	at org.eclipse.jdt.ui.JavaElementLabels.getElementLabel(JavaElementLabels.java:387)
	at org.eclipse.jdt.ui.JavaElementLabels.getElementLabel(JavaElementLabels.java:364)
	at org.eclipse.jdt.internal.ui.viewsupport.StatusBarUpdater.formatJavaElementMessage(StatusBarUpdater.java:76)
	at org.eclipse.jdt.internal.ui.viewsupport.StatusBarUpdater.formatMessage(StatusBarUpdater.java:66)
	at org.eclipse.jdt.internal.ui.viewsupport.StatusBarUpdater.selectionChanged(StatusBarUpdater.java:51)
	at org.eclipse.jface.viewers.StructuredViewer$3.run(StructuredViewer.java:763)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
	at org.eclipse.core.runtime.Platform.run(Platform.java:785)
	at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:44)
	at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:148)
	at org.eclipse.jface.viewers.StructuredViewer.firePostSelectionChanged(StructuredViewer.java:761)
	at org.eclipse.jface.viewers.StructuredViewer.handlePostSelect(StructuredViewer.java:1042)
	at org.eclipse.jface.viewers.StructuredViewer$5.widgetSelected(StructuredViewer.java:1062)
	at org.eclipse.jface.util.OpenStrategy.firePostSelectionEvent(OpenStrategy.java:232)
	at org.eclipse.jface.util.OpenStrategy.access$4(OpenStrategy.java:227)
	at org.eclipse.jface.util.OpenStrategy$3.run(OpenStrategy.java:393)
	at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
	at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:123)
	at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3218)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2864)
	at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1763)
	at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1727)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:396)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:143)
	at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:106)
	at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:109)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:92)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:68)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:369)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:167)
	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:585)
	at org.eclipse.core.launcher.Main.invokeFramework(Main.java:338)
	at org.eclipse.core.launcher.Main.basicRun(Main.java:282)
	at org.eclipse.core.launcher.Main.run(Main.java:977)
	at org.eclipse.core.launcher.Main.main(Main.java:952)
!SUBENTRY 1 org.eclipse.jdt.core 4 1008 2005-12-01 11:40:15.011
!MESSAGE
Comment 1 Olivier Thomann CLA 2005-12-02 22:58:17 EST
Fixed and released in HEAD.
No regression test. This error occured because the doc could not be retrieved.
It would be interesting to find out why it failed.
Comment 2 Markus Keller CLA 2005-12-05 07:17:22 EST
Steps in I20051129-1200:
- import org.eclipse.ui.ide as binary
- open class MarkerAdapter
- in the Outline view, select constructor of inner class MarkerCategory

The problem could be that the IMethod has two arguments of type MarkerAdapter, but the method declaration has only one.
Comment 3 Markus Keller CLA 2005-12-05 08:32:39 EST
The problem with the wrong constructor signature is bug 47354.
Comment 4 Frederic Fusier CLA 2005-12-12 12:10:59 EST
Verified for 3.2 M4 using build I20051212-0010 (cannot reproduce the exception following comment 2 scenario)