Bug 133059 [Markers] CCE when switching Problems view grouping
I20060322-1335 I switched Problems view grouping from Java Problem Type to Type while a background build was going on. !ENTRY org.eclipse.core.jobs 4 2 2006-03-23 20:36:24.465 !MESSAGE An internal error occurred during: "Process resource updates". !STACK 0 java.lang.ClassCastException: org.eclipse.ui.views.markers.internal.MarkerGroupingEntry at org.eclipse.ui.views.markers.internal.FieldCategory.getValue(FieldCategory.java:66) at org.eclipse.ui.views.markers.internal.FieldCategory.compare(FieldCategory.java:88) at org.eclipse.ui.views.markers.internal.CategorySorter.compare(CategorySorter.java:59) at org.eclipse.ui.views.markers.internal.CategorySorter.compare(CategorySorter.java:73) at org.eclipse.jface.viewers.ViewerComparator$1.compare(ViewerComparator.java:184) at java.util.Arrays.mergeSort(Arrays.java:1284) at java.util.Arrays.mergeSort(Arrays.java:1296) at java.util.Arrays.mergeSort(Arrays.java:1296) at java.util.Arrays.mergeSort(Arrays.java:1296) at java.util.Arrays.mergeSort(Arrays.java:1296) at java.util.Arrays.mergeSort(Arrays.java:1296) at java.util.Arrays.mergeSort(Arrays.java:1296) at java.util.Arrays.mergeSort(Arrays.java:1296) at java.util.Arrays.mergeSort(Arrays.java:1295) at java.util.Arrays.mergeSort(Arrays.java:1295) at java.util.Arrays.mergeSort(Arrays.java:1296) at java.util.Arrays.mergeSort(Arrays.java:1296) at java.util.Arrays.sort(Arrays.java:1223) at org.eclipse.jface.viewers.ViewerComparator.sort(ViewerComparator.java:182) at org.eclipse.ui.views.markers.internal.MarkerAdapter.buildAllMarkers(MarkerAdapter.java:240) at org.eclipse.ui.views.markers.internal.MarkerView.updateForContentsRefresh(MarkerView.java:412) at org.eclipse.ui.views.markers.internal.MarkerView$MarkerProcessJob.run(MarkerView.java:146) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:58)
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/ProblemView.java
*            the sorter to select for
	 */
	public void selectCategory(String description, CategorySorter sorter) {
		if (description == null)
			selectCategoryField(null, sorter);
		Iterator definedGroups = MarkerSupportRegistry.getInstance()
				.getMarkerGroups().iterator();
		while (definedGroups.hasNext()) {
			FieldMarkerGroup group = (FieldMarkerGroup) definedGroups.next();
			if (group.getDescription().equals(description)) {
				selectCategoryField(group, sorter);
				return;
			}
		}
		selectCategoryField(null, sorter);
	}
	/**
	 * Select the field groupingField.
	 * 
	 * @param description
	 */
	void selectCategoryField(IField groupingField, CategorySorter sorter) {
		getMarkerAdapter().getCurrentMarkers().clearGroups();
		sorter.setCategoryField(groupingField);
		refreshViewer();
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.views.markers.internal.MarkerView#writeFiltersSettings(org.eclipse.ui.XMLMemento)