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
}
	/**
	 * Update the focus resources from list. If there is an update required
	 * return <code>true</code>. This method assumes that there are filters on
	 * resources enabled.
	 * 
	 * @param elements
	 */
	void internalUpdateSelectedElements(Object[] elements) {
		Collection resourceCollection = new ArrayList();
		for (int i = 0; i < elements.length; i++) {
			if (elements[i] instanceof IResource) {
				resourceCollection.add(elements[i]);
			} else {
				MarkerResourceUtil.addResources(resourceCollection,
						((ResourceMapping) elements[i]));
			}
		}
		selectedResources = new IResource[resourceCollection.size()];
		resourceCollection.toArray(selectedResources);
	}
	/**
	 * Update the receiver for a change in selection.
	 * 
	 * @param newElements
	 */
	void updateSelectedResource(Object[] newElements) {
		if (updateNeededForSelection(newElements)) {
			internalUpdateSelectedElements(newElements);