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
}
	
	/*
	 * @see AbstractTextEditor#createSourceViewer(Composite, IVerticalRuler, int)
	 */
	protected ISourceViewer createJavaSourceViewer(Composite parent, IVerticalRuler verticalRuler, IOverviewRuler overviewRuler, boolean isOverviewRulerVisible, int styles, IPreferenceStore store) {
		return new JavaSourceViewer(parent, verticalRuler, getOverviewRuler(), isOverviewRulerVisible(), styles, store);
	}
	
	/*
	 * @see AbstractTextEditor#affectsTextPresentation(PropertyChangeEvent)
	 */
	protected boolean affectsTextPresentation(PropertyChangeEvent event) {
		return ((JavaSourceViewerConfiguration)getSourceViewerConfiguration()).affectsTextPresentation(event) || super.affectsTextPresentation(event);
	}
		
	/**
	 * Creates and returns the preference store for this Java editor with the given input.
	 *
	 * @param input The editor input for which to create the preference store
	 * @return the preference store for this editor
	 *
	 * @since 3.0
	 */
	private IPreferenceStore createCombinedPreferenceStore(IEditorInput input) {
		List stores= new ArrayList(3);
		IJavaProject project= EditorUtility.getJavaProject(input);
		if (project != null)
			stores.add(new OptionsAdapter(project.getOptions(false), JavaPlugin.getDefault().getMockupPreferenceStore(), new OptionsAdapter.IPropertyChangeEventFilter() {
				public boolean isFiltered(PropertyChangeEvent event) {