Bug 124138 NPE in FieldCategory
20060116 Not sure how I got this but I have no categories enabled java.lang.NullPointerException at org.eclipse.ui.views.markers.internal.FieldCategory.compare(FieldCategory.java:87) at org.eclipse.ui.views.markers.internal.TableSorter.compare(TableSorter.java:223) at org.eclipse.ui.views.markers.internal.TableSorter.compare(TableSorter.java:225) at org.eclipse.ui.views.markers.internal.CategorySorter.compare(CategorySorter.java:63) at org.eclipse.ui.views.markers.internal.CategorySorter.compare(CategorySorter.java:96) at org.eclipse.ui.views.markers.internal.SortUtil.partitionHelper(SortUtil.java:114) at org.eclipse.ui.views.markers.internal.SortUtil.getFirst(SortUtil.java:74) at org.eclipse.ui.views.markers.internal.SortUtil.getFirst(SortUtil.java:43) at org.eclipse.ui.views.markers.internal.MarkerAdapter.buildAllMarkers(MarkerAdapter.java:215) at org.eclipse.ui.views.markers.internal.MarkerView.updateForContentsRefresh(MarkerView.java:515) at org.eclipse.ui.views.markers.internal.MarkerView$MarkerProcessJob.run(MarkerView.java:172) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:58)
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/ProblemView.java
public TableSorter getTableSorter() {
		return ((CategorySorter) getViewer().getSorter()).innerSorter;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.views.markers.internal.MarkerView#createPartControl(org.eclipse.swt.widgets.Composite)
	 */
	public void createPartControl(Composite parent) {
		super.createPartControl(parent);
		createActivityManagerListener();
		PlatformUI.getWorkbench().getActivitySupport().getActivityManager()
				.addActivityManagerListener(activityManagerListener);
	}
	/**
	 * Create a new listener for activity changes.
	 */
	private void createActivityManagerListener() {
		activityManagerListener = new IActivityManagerListener() {
			/*
			 * (non-Javadoc)
			 * 
			 * @see org.eclipse.ui.activities.IActivityManagerListener#activityManagerChanged(org.eclipse.ui.activities.ActivityManagerEvent)
			 */
			public void activityManagerChanged(
					ActivityManagerEvent activityManagerEvent) {
				clearEnabledFilters();
				getViewer().refresh();
			}
		};