Bug 203838 [Markers] [Markers] clicking on column headers does not sort table
I20070918 Clicking on any of the column headers does not sort based on the relevant column.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/provisional/views/markers/MarkerContentGenerator.java
* @param results Collection of {@link IMarker}
	 * @param group
	 * @param markers
	 */
	private void filterMarkers(Collection results,
			MarkerFieldFilterGroup group, IMarker[] markers) {
		for (int idx = 0; idx < markers.length; idx++) {
			IMarker marker = markers[idx];
			if (group == null || group.select(marker))
				results.add(marker);
		}
	}
	/**
	 * Re-generate all of the markers and filter them based on the enabled
	 * filters.
	 * 
	 * @param subMonitor
	 * @return MarkerMap
	 */
	public MarkerMap generateFilteredMarkers(SubProgressMonitor subMonitor) {
		Collection filters = getEnabledFilters();
		Collection returnMarkers = null;
		if (filters.size() > 0) {
			Iterator filtersIterator = filters.iterator();
			if (andFilters) {
				Collection matching = new HashSet();
				while (filtersIterator.hasNext()) {
					computeMarkers(matching, subMonitor,
							(MarkerFieldFilterGroup) filtersIterator.next());
					if (returnMarkers == null)