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
protected void uninstallOverrideIndicator() {
		if (fOverrideIndicatorManager != null) {
			fOverrideIndicatorManager.removeAnnotations();
			fOverrideIndicatorManager= null;
		}
	}
	protected void installOverrideIndicator(boolean waitForReconcilation) {
		uninstallOverrideIndicator();
		IAnnotationModel model= getDocumentProvider().getAnnotationModel(getEditorInput());
		IJavaElement inputElement= getInputJavaElement();
		if (model == null || inputElement == null)
			return;
		CompilationUnit ast= JavaPlugin.getDefault().getASTProvider().getAST(inputElement, true, null);
		fOverrideIndicatorManager= new OverrideIndicatorManager(model, inputElement, ast);		
	}
	
	/**
	 * Tells whether override indicators are shown.
	 * 
	 * @return <code>true</code> if the override indicators are shown
	 * @since 3.0
	 */
	protected boolean isShowingOverrideIndicators() {
		AnnotationPreference preference= getAnnotationPreferenceLookup().getAnnotationPreference(OverrideIndicatorManager.ANNOTATION_TYPE);
		IPreferenceStore store= getPreferenceStore();
		return store.getBoolean(preference.getHighlightPreferenceKey())
			|| store.getBoolean(preference.getVerticalRulerPreferenceKey())
			|| store.getBoolean(preference.getOverviewRulerPreferenceKey())
			|| store.getBoolean(preference.getTextPreferenceKey());
	}