Bug 137356 [Markers] marker grouping not working as expected via markerSupport
N20060418-0010 The Java tooling now warns when a buildpath references an execution environment for which there is no exact match in the workspace (warning support is in HEAD as of today - org.eclipse.jdt.launching and org.eclipse.jdt.debug.ui plugins). The marker created should be categorized as a buildpath problem with other JDT build path problems. To do this, I create a marker support extension as follows (in jdt.debug.ui). <extension point="org.eclipse.ui.ide.markerSupport"> <markerAttributeGrouping defaultGroupingEntry="org.eclipse.jdt.ui.category.buildpath" markerType="org.eclipse.jdt.launching.jreContainerMarker"/> </extension> My understanding is that this should group all markers of type "org.eclipse.jdt.launching.jreContainerMarker" as buildpath problems. JUI has a corresponding grouping entry: <markerGroupingEntry id="org.eclipse.jdt.ui.category.buildpath" markerGrouping="org.eclipse.jdt.ui.java_marker_category" label="%MarkerCategory.buildpath" priority="100"/> I get the following error in the log: Reference to invalid markerGroupingEntry org.eclipse.jdt.ui.category.buildpath
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/MarkerSupportRegistry.java
entries.add(entry);
				groupingEntries.put(groupName, entries);
				tracker.registerObject(extension, entry,
						IExtensionTracker.REF_STRONG);
			}
			if (element.getName().equals(MARKER_ATTRIBUTE_GROUPING)) {
				AttributeMarkerGrouping grouping = new AttributeMarkerGrouping(
						element.getAttribute(ATTRIBUTE), element
								.getAttribute(MARKER_TYPE), element
								.getAttribute(DEFAULT_GROUPING_ENTRY), element);
				attributeMappings.add(grouping);
				tracker.registerObject(extension, grouping,
						IExtensionTracker.REF_STRONG);
			}
			if (element.getName().equals(MARKER_CATEGORY)) {
				String[] markerTypes = getMarkerTypes(element);
				String categoryName = element.getAttribute(NAME);
				for (int i = 0; i < markerTypes.length; i++) {
					categories.put(markerTypes[i], categoryName);
				}
				tracker.registerObject(extension, categoryName,
						IExtensionTracker.REF_STRONG);
			}
			processGroupingEntries(groupingEntries);
			processAttributeMappings(attributeMappings);
		}
	}
	/**
	 * Process the grouping entries into thier required plug-ins.
	 *