/** This is a W3C interface we include here so that NamespaceNode can compile in both

  *  Java 1.4 and 1.5. It's owned by the W3C, and available under their usual 

  *  extremely liberal license so this shoudldn't bother anyone. (XPath itself

  *  is under the same license after all.)

  */

 package org.w3c.dom;

 public interface UserDataHandler {

     // OperationType

     public static final short NODE_CLONED               = 1;

     public static final short NODE_IMPORTED             = 2;

     public static final short NODE_DELETED              = 3;

     public static final short NODE_RENAMED              = 4;

     public static final short NODE_ADOPTED              = 5;

     public void handle(short operation, 

                        String key, 

                        Object data, 

                        Node src, 

                        Node dst);

 }