sessionfilterchain.java

银行项目为后台ｓｏｃｋｅｔ通信写的程序

/****************************************************************************
 * Package		: com.ecSolutions.ecAppServer.server
 * File			: SessionFilterChain.java
 * Create Date  : 2007-7-20
 * Author		: Steven Chen
 * 
 * Copyright(C) 2006 ecSolutions(shanghai) Co.,Limited.All Rights Reserved.
 *			
 ***************************************************************************/
package com.ecSolutions.ecAppServer.server;

/**
 * Session filter chain, manage session filters.
 * 
 * @author Steven Chen
 * @version $Id: SessionFilterChain.java,v 1.2 2007/07/26 04:10:42 stevenchen Exp $
 */
public interface SessionFilterChain {

    /**
     * Get session associated with the session filter chain.
     * 
     * @return session
     */
    Session getSession();

    /**
     * Session have established.
     */
    void sessionStarted();

    /**
     * Session have closed or refused.
     */
    void sessionClosed();

    /**
     * Session timeout, but not closed.
     */
    void sessionTimeout();

    /**
     * Session received a packet.
     * 
     * @param packet
     *            the received packet
     */
    void packetReceived(Packet packet);

    /**
     * Session received a object which is decoded by <code>PacketDecoder</code>.
     * 
     * @param obj
     *            object
     */
    void objectReceived(Object obj);

    /**
     * Filter before send packet.
     * 
     * @param packet
     *            send packet
     */
    void packetSend(Packet packet);

    /**
     * Session sent a packet.
     * 
     * @param packet
     *            the sent packet
     */
    void packetSent(Packet packet);

    /**
     * Session sent a object.
     * 
     * @param obj
     *            the sent object
     */
    void objectSent(Object obj);

    /**
     * Session caught a exception.
     * 
     * @param cause
     *            exception
     */
    void exceptionCaught(Throwable cause);
}