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   * Copyright 2007-2008 Sun Microsystems, Inc. All rights reserved.
   * The contents of this file are subject to the terms of either the GNU
   * General Public License Version 2 only ("GPL") or the Common Development
   * and Distribution License("CDDL") (collectively, the "License").  You
  * may not use this file except in compliance with the License. You can obtain
  * a copy of the License at
  * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
  * language governing permissions and limitations under the License.
  * When distributing the software, include this License Header Notice in each
  * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
  * Sun designates this particular file as subject to the "Classpath" exception
  * as provided by Sun in the GPL Version 2 section of the License file that
  * accompanied this code.  If applicable, add the following below the License
  * Header, with the fields enclosed by brackets [] replaced by your own
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  * only if the new code is made subject to such option by the copyright
  * holder.
 package com.sun.enterprise.web.connector.grizzly.comet;
This interface represents a suspended connection (or response). Passing an instance of this class to CometContext.addCometListener automatically tells Grizzly Comet to suspend the underlying connection and to avoid commiting the response. Since the response is not commited, the connection is considered as suspended and can be resumed later when an event happens by invoking, from onEvent(com.sun.enterprise.web.connector.grizzly.comet.CometEvent) or eveyrwhere, the CometContext.resumeCometHandler(com.sun.enterprise.web.connector.grizzly.comet.CometHandler), which resume the connection by commiting the response. As an example, a browser icons will spins when a connection is suspended, as the complete response hasn't been sent back. Components that implement this interface will be notified when another CometHandler notify them using java.lang.Object.notify() With Servlet, it is recommended to attach the HTTPServletResponse and use this object to push back messages to the client.

Jeanfrancois Arcand
 public interface CometHandler<E> {

Attach an intance of E to this class.
     public void attach(E attachment);
Receive CometEvent notification. This method will be invoked everytime a java.lang.Object.notify() is invoked. The CometEvent will contains the message that can be pushed back to the remote client, cached or ignored. This method can also be used to resume a connection once a notified by invoking CometContext.resumeCometHandler(com.sun.enterprise.web.connector.grizzly.comet.CometHandler).
     public void onEvent(CometEvent eventthrows IOException;
Receive CometEvent notification when Grizzly is about to suspend the connection. This method is always invoked during the processing of CometContext.addCometHandler(com.sun.enterprise.web.connector.grizzly.comet.CometHandler) operations.
     public void onInitialize(CometEvent eventthrows IOException;
Receive CometEvent notification when the response is resumed by a CometHandler or by the CometContext
     public void onTerminate(CometEvent eventthrows IOException;    
Receive CometEvent notification when the underlying tcp communication is resumed by the Grizzly ARP. This happens when the CometContext.setExpirationDelay(long) expires or when the remote client close the connection.
    public void onInterrupt(CometEvent eventthrows IOException;
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