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NamespaceChangeLogger.javaAPI DocExample2818Thu Dec 15 21:27:20 GMT 2005com.oreilly.jent.jndi

NamespaceChangeLogger.java

package com.oreilly.jent.jndi;

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 * 
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 * includes the title, author, publisher, and ISBN. For example: 
 * 
 *   "Java Enterprise in a Nutshell, Third Edition, 
 *    by Jim Farley and William Crawford 
 *    with Prakash Malani, John G. Norman, and Justin Gehtland. 
 *    Copyright 2006 O'Reilly Media, Inc., 0-596-10142-2."
 *  
 *  If you feel your use of code examples falls outside fair use or the 
 *  permission given above, feel free to contact us at 
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 */

/**
 * NamespaceChangeLogger: A sample NamespaceChangeListener that simply prints
 *   information about the namespace events.
 */

import javax.naming.Binding;
import javax.naming.event.NamespaceChangeListener;
import javax.naming.event.NamingEvent;
import javax.naming.event.NamingExceptionEvent;

public class NamespaceChangeLogger implements NamespaceChangeListener {
  // Default constructor
  public NamespaceChangeLogger() {}

  // Callback for object addition events
  public void objectAdded(NamingEvent ev) {
    Binding b = ev.getNewBinding();
    System.out.println("--> ADD: Object of type " + b.getClassName() +
                       " added at binding \"" + b.toString() + "\"");
  }
  
  // Callback for object removal events
  public void objectRemoved(NamingEvent ev) {
    Binding b = ev.getOldBinding();
    System.out.println("--> REMOVE: Object of type " + b.getClassName() +
                       " removed from binding \"" + b.toString() + "\"");
  }

  // Callback for object rename events
  public void objectRenamed(NamingEvent ev) {
    Binding bNew = ev.getNewBinding();
    Binding bOld = ev.getOldBinding();
    System.out.println("--> RENAME: Object of type " + bNew.getClassName() +
                       " renamed from binding \"" + bOld.toString() +
                       "\" to binding \"" + bNew.toString() + "\"");
  }

  // Callback for errors in the naming service
  public void namingExceptionThrown(NamingExceptionEvent ev) {
    System.out.println("--> ERROR: An error occurred in the naming service:");
    ev.getException().printStackTrace();
  }
}