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
for (int i = 0; i < filters.length; i++) {
			IMemento child = memento.createChild(TAG_FILTER_ENTRY, filters[i]
					.getName());
			filters[i].saveFilterSettings(child);
		}
		StringWriter writer = new StringWriter();
		try {
			memento.save(writer);
		} catch (IOException e) {
			IDEWorkbenchPlugin.getDefault().getLog().log(Util.errorStatus(e));
		}
		IDEWorkbenchPlugin.getDefault().getPreferenceStore().putValue(
				getFiltersPreferenceName(), writer.toString());
		IDEWorkbenchPlugin.getDefault().savePluginPreferences();
		clearEnabledFilters();
	}
	/**
	 * Get the name of the filters preference for instances of the receiver.
	 * 
	 * @return String
	 */
	abstract String getFiltersPreferenceName();
	/**
	 * Restore the filters from the mimento.
	 * 
	 * @param memento
	 */
	private void restoreFilters(IMemento memento) {
		IMemento[] sections = null;
		if (memento != null)