Bug 62612 NPE in EclipsePreferences.internalGet(...)
I200405171219 + ZRH smoke plugin-export 20040518_1115 After start and shutdown of the Buildmeister runtime I found the following exception. It looks like getTextPreferenceKey() in AbstractAnnotationHover#getHoverInfo() at line 83 returned null. java.lang.NullPointerException at org.eclipse.core.internal.preferences.EclipsePreferences.internalGet(EclipsePreferences.java:479) at org.eclipse.core.internal.preferences.EclipsePreferences.get(EclipsePreferences.java:349) at org.eclipse.core.internal.preferences.PreferenceForwarder.contains(PreferenceForwarder.java:181) at org.eclipse.ui.plugin.AbstractUIPlugin$CompatibilityPreferenceStore.contains(AbstractUIPlugin.java:277) at org.eclipse.ui.texteditor.ChainedPreferenceStore.getVisibleStore(ChainedPreferenceStore.java:525) at org.eclipse.ui.texteditor.ChainedPreferenceStore.getBoolean(ChainedPreferenceStore.java:166) at org.eclipse.jdt.internal.ui.text.java.hover.AbstractAnnotationHover.getHoverInfo(AbstractAnnotationHover.java:83) at org.eclipse.jdt.internal.ui.text.java.hover.BestMatchHover.getHoverInfo(BestMatchHover.java:102) at org.eclipse.jdt.internal.ui.text.java.hover.JavaEditorTextHoverProxy.getHoverInfo(JavaEditorTextHoverProxy.java:69) at org.eclipse.jface.text.TextViewerHoverManager$4.run(TextViewerHoverManager.java:161)
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaEditor.java
return null;
	}
	/*
	 * @see org.eclipse.ui.texteditor.AbstractTextEditor#updatePropertyDependentActions()
	 */
	protected void updatePropertyDependentActions() {
		super.updatePropertyDependentActions();
		if (fEncodingSupport != null)
			fEncodingSupport.reset();
	}
	/*
	 * Update the hovering behavior depending on the preferences.
	 */
	private void updateHoverBehavior() {
		SourceViewerConfiguration configuration= getSourceViewerConfiguration();
		String[] types= configuration.getConfiguredContentTypes(getSourceViewer());
		for (int i= 0; i < types.length; i++) {
			
			String t= types[i];
			ISourceViewer sourceViewer= getSourceViewer();
			if (sourceViewer instanceof ITextViewerExtension2) {
							
				((ITextViewerExtension2)sourceViewer).removeTextHovers(t);
				
				int[] stateMasks= configuration.getConfiguredTextHoverStateMasks(getSourceViewer(), t);
				if (stateMasks != null) {
					for (int j= 0; j < stateMasks.length; j++)	{
						int stateMask= stateMasks[j];
						ITextHover textHover= configuration.getTextHover(sourceViewer, t, stateMask);
						((ITextViewerExtension2)sourceViewer).setTextHover(textHover, t, stateMask);