Bug 300032 [Markers] NPE in MarkerFieldFilterGroup.selectByScope
I20100115-1100 I had a Java editor open and dirty. The Problems view was NOT visible (topmost in that view stack was Progress). I pressed 'Alt+Shift+W, P, Return' to reveal the file in the Package Explorer. The stored file had no compile problems, but the the working copy in the editor had a problem which I fixed shortly before I started the Show In action. java.lang.NullPointerException at org.eclipse.ui.internal.views.markers.MarkerFieldFilterGroup.selectByScope(MarkerFieldFilterGroup.java:693) at org.eclipse.ui.internal.views.markers.MarkerContentGenerator.select(MarkerContentGenerator.java:781) at org.eclipse.ui.internal.views.markers.MarkerContentGenerator.internalGatherMarkers(MarkerContentGenerator.java:1073) at org.eclipse.ui.internal.views.markers.MarkerContentGenerator.gatherMarkers(MarkerContentGenerator.java:1013) at org.eclipse.ui.internal.views.markers.MarkerContentGenerator.generateMarkerEntries(MarkerContentGenerator.java:991) at org.eclipse.ui.internal.views.markers.MarkerUpdateJob.clean(MarkerUpdateJob.java:117) at org.eclipse.ui.internal.views.markers.MarkerUpdateJob.buildMarkers(MarkerUpdateJob.java:77) at org.eclipse.ui.internal.views.markers.MarkerUpdateJob.run(MarkerUpdateJob.java:57) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/views/markers/MarkerContentGenerator.java
private static final String TAG_GROUP_ENTRY = "filterGroup"; 
	private static final String TAG_AND = "andFilters"; 
	private static final String TAG_LEGACY_FILTER_ENTRY = "filter"; 
	
	
	private final Collection FILTERS_CHANGED = Collections.EMPTY_SET;
	 
	private ContentGeneratorDescriptor generatorDescriptor;
	
	private MarkerField[] visibleFields;
	
	private Collection enabledFilters;
	private Collection filters;
	private boolean andFilters = false;
	/**
	 * focusResources
	 * 
	 */
	private IResource[] selectedResources = MarkerSupportInternalUtilities.EMPTY_RESOURCE_ARRAY;
	
	private Collection currentResources = Collections.EMPTY_SET;
	private CachedMarkerBuilder builder;
	private String viewId;
	private IPropertyChangeListener filterPreferenceListener;
	
	/**
	 * Create a new MarkerContentGenerator
	 * 
	 * @param generatorDescriptor
	 * @param builder