logeventrenderer.java

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/*
 * 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.log4j;

import java.io.*;
import org.jpos.util.LogEvent;
import org.apache.log4j.or.ObjectRenderer;
    
/** 
 * 
 * This class can be used by the Log4J framework to render LogEvents objects.
 * 
 * <pre>
 * Add the following section into the Log4J configuration
 * file to use this renderer
 *
 * &lt;renderer
 *     renderedClass="org.jpos.util.LogEvent"
 *     renderingClass="org.jpos.log4j.LogEventRenderer"&gt;
 * &lt;/renderer&gt;
 * </pre>
 *
 * @see ObjectRenderer
 * @see LogEvent
 * @author Alejandro Revilla (based on Eoin's work)
 */
public class LogEventRenderer implements ObjectRenderer
{
    /**
     * Convert an ISOMsg to an XML representation
     * that is suitable for logging.
     */
    public String doRender (Object o)
    {
        if (o instanceof LogEvent)
        {
            ByteArrayOutputStream str = new ByteArrayOutputStream();
            PrintStream ps = new PrintStream (str);
            LogEvent evt = (LogEvent) o;
            evt.dump (ps, "");
            return "\n" + str.toString();
        }
        else
            return "ERROR: LogEventRenderer can only render LogEvent objects";
    }
}