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  * 

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  * and Distribution License("CDDL") (collectively, the "License").  You

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  * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific

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 package com.sun.grizzly;

 import com.sun.grizzly.Context.OpType;

 import com.sun.grizzly.ContextTask.TaskPool;

 /**

  * {@link CallbackHandler} task, which will be executed by 

  * {@link Context}, when Context.execute({@link ContextTask}) 

  * is called.

  * 

  * @author Alexey Stashok

  */

 public class CallbackHandlerContextTask extends SelectionKeyContextTask {

     private static final TaskPool<CallbackHandlerContextTask> taskPool = 

             new TaskPool<CallbackHandlerContextTask>() {

         @Override

         public CallbackHandlerContextTask newInstance() {

             return new CallbackHandlerContextTask();

         }

     };

     private CallbackHandler callBackHandler;

     public static CallbackHandlerContextTask poll() {

         return taskPool.poll();

     }

     public static void offer(CallbackHandlerContextTask contextTask) {

         taskPool.offer(contextTask);

     }

     protected Object doCall() throws Exception {

         IOEvent ioEvent = context.getIOEvent();

         OpType currentOpType = context.getCurrentOpType();

         try {

             if (currentOpType == OpType.OP_READ) {

                 callBackHandler.onRead(ioEvent);

             } else if (currentOpType == OpType.OP_WRITE) {

                 callBackHandler.onWrite(ioEvent);

             } else if (currentOpType == OpType.OP_CONNECT) {

                 callBackHandler.onConnect(ioEvent);

             }

         } finally {

             if (ioEvent != null) {

                 // Prevent the CallbackHandler to re-use the context.

                     // TODO: This is still dangerous as the Context might have been

                     // cached by the CallbackHandler.

                 ioEvent.attach(null);

                 ioEvent = null;

             }

         }

         return null;

     }

     public CallbackHandler getCallBackHandler() {

         return callBackHandler;

     }

     public void setCallBackHandler(CallbackHandler callBackHandler) {

         this.callBackHandler = callBackHandler;

     }

     @Override

     public void recycle() {

         callBackHandler = null;

         super.recycle();

     }

     @Override

     public void offer() {

         offer(this);

     }

 }