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  /*
   * 
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
   * 
   * 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 https://glassfish.dev.java.net/public/CDDL+GPL.html
  * 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
  * identifying information: "Portions Copyrighted [year]
  * [name of copyright owner]"
  * 
  * Contributor(s):
  * 
  * If you wish your version of this file to be governed by only the CDDL or
  * only the GPL Version 2, indicate your decision by adding "[Contributor]
  * elects to include this software in this distribution under the [CDDL or GPL
  * Version 2] license."  If you don't indicate a single choice of license, a
  * recipient has the option to distribute your version of this file under
  * either the CDDL, the GPL Version 2 or to extend the choice of license to
  * its licensees as provided above.  However, if you add GPL Version 2 code
  * and therefore, elected the GPL Version 2 license, then the option applies
  * only if the new code is made subject to such option by the copyright
  * holder.
  *
  */
 
 package com.sun.enterprise.web.connector.grizzly.comet;
 
Default Notificationhandler that uses the same a Grizzly Pipeline to execute the notification process.

Author(s):
Jeanfrancois Arcand
 
 public class DefaultNotificationHandler implements NotificationHandler{
     
     private final static Logger logger = SelectorThread.logger();
    
    
    
The com.sun.enterprise.web.connector.grizzly.Pipeline used to execute threaded notification.
 
     protected Pipeline pipeline;

    
    
true if the caller of CometContext.notify should block when notifying other CometHandler.
 
     protected boolean blockingNotification = false;
    

    
Set the com.sun.enterprise.web.connector.grizzly.Pipeline used for notifying the CometHandler.
 
     protected void setPipeline(Pipeline pipeline){
         this. = pipeline;
     }

    
    
Return true if the invoker of notify() should block when notifying Comet Handlers.
 
     public boolean isBlockingNotification() {
         return ;
     }

    
    
Set to true if the invoker of notify() should block when notifying Comet Handlers.
 
     public void setBlockingNotification(boolean blockingNotification) {
         this. = blockingNotification;
     }

        
    
Notify all CometHandler.

Parameters:
cometEvent the CometEvent used to notify CometHandler
iteratorHandlers An iterator over a list of CometHandler
    @SuppressWarnings("unchecked")
    public void notify(final CometEvent cometEvent,final Iterator<CometHandler
            iteratorHandlersthrows IOException{
        if ( ||  == null){
            notify0(cometEvent,iteratorHandlers);
        } else {
            .addTask(new TaskBase(){
                public void doTask() throws IOException{
                    notify0(cometEvent,iteratorHandlers);
                }
            });
        }
    }
    protected void notify0(CometEvent cometEvent,Iterator<CometHandleriteratorHandlers
            throws IOException{       
        CometHandler cometHandler;
        while(iteratorHandlers.hasNext()){
            cometHandler = iteratorHandlers.next();
            try{
                notify0(cometEvent,cometHandler);
            } catch (Throwable ex){
                 try{
                    cometEvent.getCometContext().resumeCometHandler(cometHandlertrue);
                } catch (Throwable t){
                    if (.isLoggable(.)){
                        .log(.,"Resume phase failed: "t);
                    }
                }               
                .log(.,"Notification failed: "ex);
            }
        }
    }


    
Notify a single CometHandler.

Parameters:
cometEvent the CometEvent used to notify CometHandler
cometHandler a CometHandler
    @SuppressWarnings("unchecked")
    public void notify(final CometEvent cometEvent,final CometHandler cometHandler
            throws IOException{
        if ( ||  == null){
            notify0(cometEvent,cometHandler);
        } else {
            .addTask(new TaskBase(){
                public void doTask() throws IOException{
                    try{
                        notify0(cometEvent,cometHandler);
                    } catch (Throwable ex){
                        try{
                            cometEvent.getCometContext().resumeCometHandler(cometHandlertrue);
                        } catch (Throwable t){
                            .log(.,"Resume phase failed: "ex);
                        }
                        .log(.,"Notification failed: "ex);
                    }
                }
            });
        }
    }

    
    
Notify a CometHandler. CometEvent.INTERRUPT -> CometHandler.onInterrupt CometEvent.NOTIFY -> CometHandler.onEvent CometEvent.INITIALIZE -> CometHandler.onInitialize CometEvent.TERMINATE -> CometHandler.onTerminate CometEvent.READ -> CometHandler.onEvent CometEvent.WRITE -> CometHandler.onEvent

Parameters:
attachment An object shared amongst CometHandler.
cometHandler The CometHandler to invoke.
    protected void notify0(CometEvent cometEvent,CometHandler cometHandler
            throws IOException{        
        synchronized (cometHandler){
            // If the CometHandler has been resumed during the push operation,
            // It is possible it may no longer valid. Hence avoid invoking
            // it and return.
            if (!cometEvent.getCometContext().isActive(cometHandler)){
                return;
            }
            switch (cometEvent.getType()) {
                case .:
                    cometHandler.onInterrupt(cometEvent);
                    break;
                case .:
                    cometHandler.onEvent(cometEvent);
                    break;
                case .:
                    cometHandler.onEvent(cometEvent);
                    break;      
                case .:
                    cometHandler.onEvent(cometEvent);
                    break;                 
                case .:
                    cometHandler.onInitialize(cometEvent);
                    break;      
                case .:
                    cometHandler.onTerminate(cometEvent);
                    break;                       
                default:
                    throw new IllegalStateException();
            }
        }
    }
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