### Eclipse Workspace Patch 1.0
#P org.eclipse.core.resources
Index: src/org/eclipse/core/internal/dtree/AbstractDataTreeNode.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.core.resources/src/org/eclipse/core/internal/dtree/AbstractDataTreeNode.java,v
retrieving revision 1.22
diff -u -r1.22 AbstractDataTreeNode.java
--- src/org/eclipse/core/internal/dtree/AbstractDataTreeNode.java	4 Apr 2006 20:53:47 -0000	1.22
+++ src/org/eclipse/core/internal/dtree/AbstractDataTreeNode.java	5 Oct 2009 14:16:40 -0000
@@ -10,6 +10,8 @@
  *******************************************************************************/
 package org.eclipse.core.internal.dtree;
 
+import java.lang.reflect.Field;
+
 import org.eclipse.core.internal.utils.Messages;
 import org.eclipse.core.internal.utils.StringPool;
 import org.eclipse.core.runtime.IPath;
@@ -43,6 +45,31 @@
 	 *	children of the new node
 	 */
 	AbstractDataTreeNode(String name, AbstractDataTreeNode[] children) {
+		//find out whether the String to add is actually a substring.
+		//if yes, then add a part string into the pool. Using introspection.
+		if (name!=null) {
+			try {
+				Class c = String.class;
+				Field fldValue = c.getDeclaredField("value"); //$NON-NLS-1$ 
+				fldValue.setAccessible(true);
+				Object o = fldValue.get(name);
+				if (o!=null) {
+					char[] value = (char[])o;
+					if (value.length != name.length()) {
+						name= new String(name);
+					}
+				}
+			} catch(NoSuchFieldException e) {
+				/*ignore*/
+				e.printStackTrace();
+			} catch(IllegalAccessException e) {
+				/*ignore*/
+				e.printStackTrace();
+			} catch(Throwable t) {
+				/*ignore*/
+				t.printStackTrace();
+			}
+		}
 		this.name = name;
 		if (children == null || children.length == 0)
 			this.children = AbstractDataTreeNode.NO_CHILDREN;