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JDBC Driver for the Firebird RDBMS
There is a newer version: 4.0.10.java7
/*
 * Firebird Open Source J2ee connector - jdbc driver
 *
 * Distributable under LGPL license.
 * You may obtain a copy of the License at http://www.gnu.org/copyleft/lgpl.html
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * LGPL License for more details.
 *
 * This file was created by members of the firebird development team.
 * All individual contributions remain the Copyright (C) of those
 * individuals.  Contributors to this file are either listed here or
 * can be obtained from a CVS history command.
 *
 * All rights reserved.
 */
package org.firebirdsql.logging;

import org.apache.log4j.Category;
import org.apache.log4j.Priority;

/**
 * Describe class Log4jLogger here.
 *
 * @author Blas Rodriguez Somoza
 * @version 1.0
 */
public class Log4jLogger extends Logger{
	
    private static boolean loggingAvailable = true;
	
    private final Category log;
	
    protected Log4jLogger(String name) {
        if (loggingAvailable) {
            Category myLog = null;
            try {
                myLog = Category.getInstance(name);
            }
            catch (Throwable t) {
                loggingAvailable = false;
            } // end of try-catch
            log = myLog;
        } // end of if ()
        else {
            log = null;
        } // end of else
    }
		
    public boolean isDebugEnabled() {
        return loggingAvailable && log.isEnabledFor(Priority.DEBUG);
    }
	
    public void debug(Object message) {
        if (isDebugEnabled()) {
            log.log(Priority.DEBUG, message);
        } // end of if ()
    }
	
    public void debug(Object message, Throwable t) {
        if (isDebugEnabled()) {
            log.log(Priority.DEBUG, message, t);
        }
    }
    
    public boolean isTraceEnabled() {
        return isDebugEnabled();
    }

    public void trace(Object message, Throwable t) {
        debug(message, t);
    }

    public void trace(Object message) {
        debug(message);
    }

    public boolean isInfoEnabled() {
        return loggingAvailable && log.isEnabledFor(Priority.INFO);
    }
	
    public void info(Object message) {
        if (isInfoEnabled()) {
            log.log(Priority.INFO, message);
        }
    }
	
    public void info(Object message, Throwable t) {
        if (isInfoEnabled()) {
            log.log(Priority.INFO, message, t);
        }
    }
	
    public boolean isWarnEnabled() {
        return loggingAvailable && log.isEnabledFor(Priority.WARN);
    }
	
    public void warn(Object message) {
        if (isWarnEnabled()) {
            log.log(Priority.WARN, message);
        }
    }
	
    public void warn(Object message, Throwable t) {
        if (isWarnEnabled()) {
            log.log(Priority.WARN, message, t);
        }
    }
	
    public boolean isErrorEnabled() {
        return loggingAvailable && log.isEnabledFor(Priority.ERROR);
    }
	
    public void error(Object message) {
        if (isErrorEnabled()) {
            log.log(Priority.ERROR, message);
        }
    }
	
    public void error(Object message, Throwable t) {
        if (isErrorEnabled()) {
            log.log(Priority.ERROR, message, t);
        }
    }
	
    public boolean isFatalEnabled() {
        return loggingAvailable && log.isEnabledFor(Priority.FATAL);
    }
	
    public void fatal(Object message) {
        if (isFatalEnabled()) {
            log.log(Priority.FATAL, message);
        }
    }
	
    public void fatal(Object message, Throwable t) {
        if (isFatalEnabled()) {
            log.log(Priority.FATAL, message, t);
        }
    }	
}