Bug 123319 [Markers] ClassCastException during marker update
3.2 20050116 It is possible to get the following ClassCastException during marker updates. This is because the refreshes are not IMarkers and should not be processed. !ENTRY org.eclipse.core.jobs 4 2 2006-01-10 16:00:48.468 !MESSAGE An internal error occurred during: "Process resource updates". !STACK 0 java.lang.ClassCastException at org.eclipse.ui.views.markers.internal.MarkerView$MarkerProcessJob.getExistingMarkers(MarkerView.java:206) at org.eclipse.ui.views.markers.internal.MarkerView$MarkerProcessJob.run(MarkerView.java:169) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:58)
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/MarkerView.java
IEditorPart editor = (IEditorPart) part;
			IFile file = ResourceUtil.getFile(editor.getEditorInput());
			if (file == null) {
				IEditorInput editorInput = editor.getEditorInput();
				if (editorInput != null) {
					Object mapping = editorInput
							.getAdapter(ResourceMapping.class);
					if (mapping != null)
						selectedElements.add(mapping);
				}
			} else {
				selectedElements.add(file);
			}
		} else {
			if (selection instanceof IStructuredSelection) {
				for (Iterator iterator = ((IStructuredSelection) selection)
						.iterator(); iterator.hasNext();) {
					Object object = iterator.next();
					if (object instanceof IAdaptable) {
						ITaskListResourceAdapter taskListResourceAdapter;
						Object adapter = ((IAdaptable) object)
								.getAdapter(ITaskListResourceAdapter.class);
						if (adapter != null
								&& adapter instanceof ITaskListResourceAdapter) {
							taskListResourceAdapter = (ITaskListResourceAdapter) adapter;
						} else {
							taskListResourceAdapter = DefaultMarkerResourceAdapter
									.getDefault();
						}
						IResource resource = taskListResourceAdapter