isofilter.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
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 *
 * 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.
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 * 4. The names "jPOS" and "jPOS.org" must not be used to endorse 
 *    or promote products derived from this software without prior 
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 *    [e-mail].
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 * 5. Products derived from this software may not be called "jPOS",
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 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * ====================================================================
 *
 * 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.iso;

import org.jpos.util.LogEvent;

/**
 * An ISOFilter has the oportunity to modify an incoming or
 * outgoing ISOMsg that is about to go thru an ISOChannel.
 * It also has the chance to Veto by throwing an Exception
 * @author <a href="mailto:[e-mail]">Alejandro P. Revilla</a>
 * @version $Revision: 1.3 $ $Date: 2000/11/02 12:09:18 $
 */
public interface ISOFilter {
    public class VetoException extends ISOException {
	public VetoException () {
	    super();
	}
	public VetoException (String detail) {
	    super(detail);
	}
	public VetoException (Exception nested) {
	    super(nested);
	}
	public VetoException (String detail, Exception nested) {
	    super(detail, nested);
	}
    }
    /**
     * @param channel current ISOChannel instance
     * @param m ISOMsg to filter
     * @param evt LogEvent
     * @return an ISOMsg (possibly parameter m)
     * @throws VetoException
     */
    public ISOMsg filter (ISOChannel channel, ISOMsg m, LogEvent evt) 
	throws VetoException;
}