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/**
  Log4jXMLCLogger - XMLC logger interface to the enhydra logger
  

    Copyright (C) 2002-2003  Together

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library 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 GNU
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 Log4jXMLCLogger.java
 Date: 14.07.2003.
 @version 1.0.0
 @author: Milosevic Sinisa [email protected]
 */

package org.enhydra.xml.xmlc;

import org.apache.log4j.Level;

/**
 * XMLC logger interface to the enhydra logger.
 */
public class Log4jXMLCLogger implements XMLCLogger {

  /**
   * Constant for name of class to use when recording caller
   * of log method. Appending a dot at the end is recommended practice.
   */
  private static final String FQCN = Log4jXMLCLogger.class.getName() + ".";

  //underlying implementation
  private final org.apache.log4j.Logger m_logger;

  /**
   * Create a logger that delegates to specified category.
   *
   * @param logImpl the category to delegate to
   */
  public Log4jXMLCLogger(final org.apache.log4j.Logger logImpl) {
    m_logger = logImpl;
  }


  /**
   * Determine if messages of priority "info" will be logged.
   *
   * @return true if "info" messages will be logged
   */    
   public final boolean infoEnabled() {
        return m_logger.isInfoEnabled();
    }

  /**
   * Log a info message.
   *
   * @param message the message
   */    public final void logInfo(final String message) {
            m_logger.log(FQCN, Level.INFO, message, null );
    }
  /**
   * Log a info message.
   *
   * @param message the message
   * @param throwable the throwable
   */
    public final void logInfo(final String message, final Throwable throwable) {
        m_logger.log( FQCN, Level.WARN, message, throwable );
    }

  /**
   * Determine if messages of priority "error" will be logged.
   *
   * @return true if "error" messages will be logged
   */
    public final boolean errorEnabled() {
        return m_logger.isEnabledFor(Level.ERROR);
    }


  /**
   * Log a error message.
   *
   * @param message the message
   */
    public final void logError(final String message) {
       m_logger.log( FQCN, Level.ERROR, message, null );
    }

  /**
   * Log a error message.
   *
   * @param message the message
   * @param throwable the throwable
   */
    public final void logError(final String message, final Throwable throwable) {
       m_logger.log( FQCN, Level.ERROR, message, throwable );
    }
  
  
  /**
   * Determine if messages of priority "debug" will be logged.
   *
   * @return true if "debug" messages will be logged
   */
    public boolean debugEnabled() {
    return m_logger.isDebugEnabled();

    }


  /**
   * Log a debug message.
   *
   * @param message the message
   */
    public final void logDebug(final String message) {
        m_logger.log(FQCN, Level.DEBUG, message, null );
    }


  /**
   * Log a debug message.
   *
   * @param message the message
   * @param throwable the throwable
   */
    public void logDebug(final String message, final Throwable throwable) {
        m_logger.log( FQCN, Level.DEBUG, message, throwable);
    }
    
  /**
   * Create a new child logger.
   * The name of the child logger is [current-loggers-name].[passed-in-name]
   * Throws IllegalArgumentException if name has an empty element name
   *
   * @param name the subname of this logger
   * @return the new logger
   */
  public final XMLCLogger getChildLogger(final String name) {
    return new Log4jXMLCLogger(
      org.apache.log4j.Logger.getLogger(m_logger.getName() + "." + name));
  }    
    
}