Bug 28152 IAE when opening editor
Build 20021210 + plugin export 20021211 Got the following IAE when trying to open an editor. java.lang.IllegalArgumentException at org.eclipse.core.runtime.Preferences.setValue(Preferences.java:1164) at org.eclipse.ui.plugin.AbstractUIPlugin$CompatibilityPreferenceStore.setValue (AbstractUIPlugin.java:455) at org.eclipse.jdt.ui.JavaElementSorter$Cache.getOffsets (JavaElementSorter.java:122) at org.eclipse.jdt.ui.JavaElementSorter$Cache.getIndex (JavaElementSorter.java:111) at org.eclipse.jdt.ui.JavaElementSorter.getMemberCategory (JavaElementSorter.java:99) at org.eclipse.jdt.ui.JavaElementSorter.category (JavaElementSorter.java:205) at org.eclipse.jdt.ui.JavaElementSorter.compare (JavaElementSorter.java:247) at org.eclipse.jface.viewers.ViewerSorter$1.compare (ViewerSorter.java:163) at java.util.Arrays.mergeSort(Arrays.java:1181) at java.util.Arrays.sort(Arrays.java:1128) at org.eclipse.jface.viewers.ViewerSorter.sort(ViewerSorter.java:161) at org.eclipse.jface.viewers.StructuredViewer.getSortedChildren (StructuredViewer.java:447) at org.eclipse.jface.viewers.AbstractTreeViewer.createChildren (AbstractTreeViewer.java:250) at org.eclipse.jface.viewers.AbstractTreeViewer.internalExpand (AbstractTreeViewer.java:734) at org.eclipse.jface.viewers.AbstractTreeViewer.setSelectionToWidget (AbstractTreeViewer.java:1141) at org.eclipse.jface.viewers.StructuredViewer.setSelectionToWidget (StructuredViewer.java:933) at org.eclipse.jface.viewers.StructuredViewer.setSelection (StructuredViewer.java:898) at org.eclipse.jdt.internal.ui.javaeditor.JavaOutlinePage.select (JavaOutlinePage.java:1008) at org.eclipse.jdt.internal.ui.javaeditor.CompilationUnitEditor.synchronizeOutlineP ageSelection(CompilationUnitEditor.java:1951) at org.eclipse.jdt.internal.ui.javaeditor.JavaEditor$OutlinePageSelectionUpdater.ru n(JavaEditor.java:166) at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:31) at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages (Synchronizer.java:94) at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:1669) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:1414) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1403) at org.eclipse.ui.internal.Workbench.run(Workbench.java:1386) at org.eclipse.core.internal.boot.InternalBootLoader.run (InternalBootLoader.java:845) at org.eclipse.core.boot.BootLoader.run(BootLoader.java:462) at java.lang.reflect.Method.invoke(Native Method) at org.eclipse.core.launcher.Main.basicRun(Main.java:247) at org.eclipse.core.launcher.Main.run(Main.java:703) at org.eclipse.core.launcher.Main.main(Main.java:539)
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/JavaElementSorter.java
}
			}
		}
		return 0; 
	}
			
	private int getClassPathIndex(IPackageFragmentRoot root) {
		try {
			IPath rootPath= root.getPath();
			IPackageFragmentRoot[] roots= root.getJavaProject().getPackageFragmentRoots();
			for (int i= 0; i < roots.length; i++) {
				if (roots[i].getPath().equals(rootPath)) {
					return i;
				}
			}
		} catch (JavaModelException e) {
		}
		return Integer.MAX_VALUE;
	}
	
	/* (non-Javadoc)
	 * @see org.eclipse.jface.viewers.ViewerSorter#getCollator()
	 */
	public final Collator getCollator() {
		if (collator == null) {
			collator= Collator.getInstance();
		}
		return collator;
	}
}