requestdispatcher.java

pos机交易实现源代码 含金融卡交易8583协议实现 开发环境：linux 典型应用：嵌入系统开发 仅供参考

/*
 * Copyright (c) 2000 jPOS.org.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *    "This product includes software developed by the jPOS project 
 *    (http://www.jpos.org/)". Alternately, this acknowledgment may 
 *    appear in the software itself, if and wherever such third-party 
 *    acknowledgments normally appear.
 *
 * 4. The names "jPOS" and "jPOS.org" must not be used to endorse 
 *    or promote products derived from this software without prior 
 *    written permission. For written permission, please contact 
 *    [e-mail].
 *
 * 5. Products derived from this software may not be called "jPOS",
 *    nor may "jPOS" appear in their name, without prior written
 *    permission of the jPOS project.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  
 * IN NO EVENT SHALL THE JPOS PROJECT OR ITS CONTRIBUTORS BE LIABLE FOR 
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
 * POSSIBILITY OF SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the jPOS Project.  For more
 * information please see <http://www.jpos.org/>.
 */

package org.jpos.apps.qsp;

import org.jpos.iso.ISOMsg;
import org.jpos.iso.ISOSource;
import org.jpos.iso.ISOException;
import org.jpos.iso.ISORequestListener;
import org.jpos.core.Configuration;
import org.jpos.core.Configurable;
import org.jpos.core.ReConfigurable;
import org.jpos.util.Logger;
import org.jpos.util.LogEvent;
import org.jpos.util.LogSource;
import org.jpos.util.SimpleLogSource;

/**
 * Forwards incoming requests to custom ISORequestListener
 * implementation based on MTI
 * <pre>
 *  &lt;request-listener class="org.jpos.apps.qsp.RequestDispatcher"&gt;
 *   &lt;property name="prefix" value="com.your.company.Incoming_" /&gt;
 *  &lt;/request-listener&gt;
 * </pre>
 * You should provide suitable com.your.company.Incoming_XXXX
 * implementations (XXXX is replaced by incoming MTI)
 */
public class RequestDispatcher
    extends SimpleLogSource 
    implements ISORequestListener, ReConfigurable
{
    Configuration cfg;
    public RequestDispatcher () {
        super();
    }
    public void setConfiguration (Configuration cfg) {
        this.cfg = cfg;
    }
    public boolean process (ISOSource source, ISOMsg m) {
        try {
            String mti      = m.getMTI();
            String className = cfg.get("prefix", "") + mti;
            Class c = Class.forName(className);
            if (c != null) {
                ISORequestListener rl = (ISORequestListener) c.newInstance();
                if (rl instanceof LogSource)
                    ((LogSource)rl).setLogger 
                        (getLogger(), getRealm()+"-"+mti);
                if (rl instanceof Configurable)
                    ((Configurable)rl).setConfiguration (cfg);
                return rl.process (source, m);
            }
        } catch (ClassNotFoundException e) {
            Logger.log (new LogEvent (this, "qsp-request-listener", e));
        } catch (InstantiationException e) {
            Logger.log (new LogEvent (this, "qsp-request-listener", e));
        } catch (IllegalAccessException e) {
            Logger.log (new LogEvent (this, "qsp-request-listener", e));
        } catch (ISOException e) {
            Logger.log (new LogEvent (this, "qsp-request-listener", e));
        }
        return false;
    }
}