Java by API/javax.naming.event/EventContext

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EventContext: addNamingListener(String target, int scope, NamingListener l)

   <source lang="java">
   

/*

* Copyright (c) 1995 - 2008 Sun Microsystems, Inc.  All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
*   - Redistributions of source code must retain the above copyright
*     notice, this list of conditions and the following disclaimer.
*
*   - Redistributions in binary form must reproduce the above copyright
*     notice, this list of conditions and the following disclaimer in the
*     documentation and/or other materials provided with the distribution.
*
*   - Neither the name of Sun Microsystems nor the names of its
*     contributors may be used to endorse or promote products derived
*     from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

import java.util.Hashtable; import javax.naming.Context; import javax.naming.InitialContext; import javax.naming.NamingException; import javax.naming.event.EventContext; import javax.naming.event.NamingExceptionEvent; import javax.naming.event.NamingListener; import javax.naming.ldap.UnsolicitedNotificationEvent; import javax.naming.ldap.UnsolicitedNotificationListener; /**

* Demonstrates how to register a listener for Unsolicited Notifications. In
* order for the listener to receive a notification, you must prod the directory
* server to send an Unsolicited Notification. The procedure for doing so is
* directory-dependent.
* 
* usage: java RegUnsol
*/

class RegUnsol {

 public static void main(String[] args) {
   // Set up environment for creating initial context
   Hashtable<String, Object> env = new Hashtable<String, Object>(11);
   env
       .put(Context.INITIAL_CONTEXT_FACTORY,
           "com.sun.jndi.ldap.LdapCtxFactory");
   env.put(Context.PROVIDER_URL, "ldap://localhost:389/o=JNDItutorial");
   try {
     // Get event context for registering listener
     EventContext ctx = (EventContext) (new InitialContext(env)
         .lookup("ou=People"));
     // Create listener
     NamingListener listener = new UnsolListener();
     // Register listener with context (all targets equivalent)
     ctx.addNamingListener("", EventContext.ONELEVEL_SCOPE, listener);
     // Wait 1 minutes for listener to receive events
     try {
       Thread.sleep(60000);
     } catch (InterruptedException e) {
       System.out.println("sleep interrupted");
     }
     // Not strictly necessary if we"re going to close context anyhow
     ctx.removeNamingListener(listener);
     // Close context when we"re done
     ctx.close();
   } catch (NamingException e) {
     e.printStackTrace();
   }
 }
 /**
  * A sample UnsolicitedNotificationListener.
  */
 static class UnsolListener implements UnsolicitedNotificationListener {
   public void notificationReceived(UnsolicitedNotificationEvent evt) {
     System.out.println("received: " + evt);
   }
   public void namingExceptionThrown(NamingExceptionEvent evt) {
     System.out.println(">>> UnsolListener got an exception");
     evt.getException().printStackTrace();
   }
 }

}



 </source>
   
  
 
  



EventContext.ONELEVEL_SCOPE

   <source lang="java">
   

/*

* Copyright (c) 1995 - 2008 Sun Microsystems, Inc.  All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
*   - Redistributions of source code must retain the above copyright
*     notice, this list of conditions and the following disclaimer.
*
*   - Redistributions in binary form must reproduce the above copyright
*     notice, this list of conditions and the following disclaimer in the
*     documentation and/or other materials provided with the distribution.
*
*   - Neither the name of Sun Microsystems nor the names of its
*     contributors may be used to endorse or promote products derived
*     from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

import java.util.Hashtable; import javax.naming.Context; import javax.naming.InitialContext; import javax.naming.NamingException; import javax.naming.event.EventContext; import javax.naming.event.NamingExceptionEvent; import javax.naming.event.NamingListener; import javax.naming.ldap.UnsolicitedNotificationEvent; import javax.naming.ldap.UnsolicitedNotificationListener; /**

* Demonstrates how to register a listener for Unsolicited Notifications. In
* order for the listener to receive a notification, you must prod the directory
* server to send an Unsolicited Notification. The procedure for doing so is
* directory-dependent.
* 
* usage: java RegUnsol
*/

class RegUnsol {

 public static void main(String[] args) {
   // Set up environment for creating initial context
   Hashtable<String, Object> env = new Hashtable<String, Object>(11);
   env
       .put(Context.INITIAL_CONTEXT_FACTORY,
           "com.sun.jndi.ldap.LdapCtxFactory");
   env.put(Context.PROVIDER_URL, "ldap://localhost:389/o=JNDItutorial");
   try {
     // Get event context for registering listener
     EventContext ctx = (EventContext) (new InitialContext(env)
         .lookup("ou=People"));
     // Create listener
     NamingListener listener = new UnsolListener();
     // Register listener with context (all targets equivalent)
     ctx.addNamingListener("", EventContext.ONELEVEL_SCOPE, listener);
     // Wait 1 minutes for listener to receive events
     try {
       Thread.sleep(60000);
     } catch (InterruptedException e) {
       System.out.println("sleep interrupted");
     }
     // Not strictly necessary if we"re going to close context anyhow
     ctx.removeNamingListener(listener);
     // Close context when we"re done
     ctx.close();
   } catch (NamingException e) {
     e.printStackTrace();
   }
 }
 /**
  * A sample UnsolicitedNotificationListener.
  */
 static class UnsolListener implements UnsolicitedNotificationListener {
   public void notificationReceived(UnsolicitedNotificationEvent evt) {
     System.out.println("received: " + evt);
   }
   public void namingExceptionThrown(NamingExceptionEvent evt) {
     System.out.println(">>> UnsolListener got an exception");
     evt.getException().printStackTrace();
   }
 }

}



 </source>
   
  
 
  



EventContext: removeNamingListener(NamingListener l)

   <source lang="java">
   

/*

* Copyright (c) 1995 - 2008 Sun Microsystems, Inc.  All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
*   - Redistributions of source code must retain the above copyright
*     notice, this list of conditions and the following disclaimer.
*
*   - Redistributions in binary form must reproduce the above copyright
*     notice, this list of conditions and the following disclaimer in the
*     documentation and/or other materials provided with the distribution.
*
*   - Neither the name of Sun Microsystems nor the names of its
*     contributors may be used to endorse or promote products derived
*     from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

import java.util.Hashtable; import javax.naming.Context; import javax.naming.InitialContext; import javax.naming.NamingException; import javax.naming.event.EventContext; import javax.naming.event.NamingExceptionEvent; import javax.naming.event.NamingListener; import javax.naming.ldap.UnsolicitedNotificationEvent; import javax.naming.ldap.UnsolicitedNotificationListener; /**

* Demonstrates how to register a listener for Unsolicited Notifications. In
* order for the listener to receive a notification, you must prod the directory
* server to send an Unsolicited Notification. The procedure for doing so is
* directory-dependent.
* 
* usage: java RegUnsol
*/

class RegUnsol {

 public static void main(String[] args) {
   // Set up environment for creating initial context
   Hashtable<String, Object> env = new Hashtable<String, Object>(11);
   env
       .put(Context.INITIAL_CONTEXT_FACTORY,
           "com.sun.jndi.ldap.LdapCtxFactory");
   env.put(Context.PROVIDER_URL, "ldap://localhost:389/o=JNDItutorial");
   try {
     // Get event context for registering listener
     EventContext ctx = (EventContext) (new InitialContext(env)
         .lookup("ou=People"));
     // Create listener
     NamingListener listener = new UnsolListener();
     // Register listener with context (all targets equivalent)
     ctx.addNamingListener("", EventContext.ONELEVEL_SCOPE, listener);
     // Wait 1 minutes for listener to receive events
     try {
       Thread.sleep(60000);
     } catch (InterruptedException e) {
       System.out.println("sleep interrupted");
     }
     // Not strictly necessary if we"re going to close context anyhow
     ctx.removeNamingListener(listener);
     // Close context when we"re done
     ctx.close();
   } catch (NamingException e) {
     e.printStackTrace();
   }
 }
 /**
  * A sample UnsolicitedNotificationListener.
  */
 static class UnsolListener implements UnsolicitedNotificationListener {
   public void notificationReceived(UnsolicitedNotificationEvent evt) {
     System.out.println("received: " + evt);
   }
   public void namingExceptionThrown(NamingExceptionEvent evt) {
     System.out.println(">>> UnsolListener got an exception");
     evt.getException().printStackTrace();
   }
 }

}



 </source>