log4jlogger.java

一个跟踪调试jdbc的工具包。通过把jdbc做一个封装

/*
 *
 * ====================================================================
 *
 * The P6Spy Software License, Version 1.1
 *
 * This license is derived and fully compatible with the Apache Software
 * license, see http://www.apache.org/LICENSE.txt
 *
 * Copyright (c) 2001-2002 Andy Martin, Ph.D. and Jeff Goke
 * 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 acknowlegement:
 * "The original concept and code base for P6Spy was conceived
 * and developed by Andy Martin, Ph.D. who generously contribued
 * the first complete release to the public under this license.
 * This product was due to the pioneering work of Andy
 * that began in December of 1995 developing applications that could
 * seamlessly be deployed with minimal effort but with dramatic results.
 * This code is maintained and extended by Jeff Goke and with the ideas
 * and contributions of other P6Spy contributors.
 * (http://www.p6spy.com)"
 * Alternately, this acknowlegement may appear in the software itself,
 * if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "P6Spy", "Jeff Goke", and "Andy Martin" 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 "P6Spy"
 * nor may "P6Spy" appear in their names without prior written
 * permission of Jeff Goke and Andy Martin.
 *
 * 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 APACHE SOFTWARE FOUNDATION 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.
 */

package com.p6spy.engine.logging.appender;

import org.apache.log4j.*;
import java.io.StringWriter;
import java.io.PrintWriter;
import com.p6spy.engine.common.*;

// adapted from Rafael Alvarez's LoggingStream class
public class Log4jLogger extends FormattedLogger implements P6Logger {
    
    protected Level level = Level.INFO;
    protected String lastEntry;
    private static Logger log;
    
    // By configuring log4j by this method, we control the p6spy logger behavior
    // using the same configuration file as p6spy, and any other attempt
    // to configure log4j will add to this configuration.
    public Log4jLogger() {
        P6SpyProperties properties = new P6SpyProperties();
        PropertyConfigurator.configure(properties.forceReadProperties());
        log = Logger.getLogger("p6spy");
        log.setAdditivity(false);
    }
    
    
    public void logException(Exception e) {
        StringWriter sw = new StringWriter();
        PrintWriter pw  = new PrintWriter(sw);
        e.printStackTrace(pw);
        logText(sw.toString());
    }
    
    public void logText(String text) {
        log.log(this.level, text);
        setLastEntry(text);
    }
    
    public Level getLevel() {
        return this.level;
    }
    
    public void setLevel(Level inVar) {
        this.level = inVar;
    }   
}