writerequestqueue.java

mina是以Java实现的一个开源的网络程序框架

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package org.apache.mina.core.write;

import org.apache.mina.core.session.IoSession;


/**
 * Stores {@link WriteRequest}s which are queued to an {@link IoSession}.
 * 
 * @author The Apache MINA Project ([e-mail])
 * @version $Rev: 751504 $, $Date: 2009-03-08 20:24:58 +0100 (Sun, 08 Mar 2009) $
 */
public interface WriteRequestQueue {

    /**
     * Get the first request available in the queue for a session.
     * @param session The session 
     * @return The first available request, if any. 
     */
    WriteRequest poll(IoSession session);
    
    /**
     * Add a new WriteRequest to the session write's queue
     * @param session The session
     * @param writeRequest The writeRequest to add
     */
    void offer(IoSession session, WriteRequest writeRequest);
    
    /**
     * Tells if the WriteRequest queue is empty or not for a session
     * @param session The session to check
     * @return <code>true</code> if the writeRequest is empty
     */
    boolean isEmpty(IoSession session);
    
    /**
     * Removes all the requests from this session's queue.
     * @param session The associated session
     */
    void clear(IoSession session);
    
    /**
     * Disposes any releases associated with the specified session.
     * This method is invoked on disconnection.
     * @param session The associated session
     */
    void dispose(IoSession session);
}