substituteloggerfactory.java

Java开发最新的日志记录工具slf4j的源码

/* 
 * Copyright (c) 2004-2005 SLF4J.ORG
 * Copyright (c) 2004-2005 QOS.ch
 *
 * All rights reserved.
 * 
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to  deal in  the Software without  restriction, including
 * without limitation  the rights to  use, copy, modify,  merge, publish,
 * distribute, and/or sell copies of  the Software, and to permit persons
 * to whom  the Software is furnished  to do so, provided  that the above
 * copyright notice(s) and this permission notice appear in all copies of
 * the  Software and  that both  the above  copyright notice(s)  and this
 * permission notice appear in supporting documentation.
 * 
 * THE  SOFTWARE IS  PROVIDED  "AS  IS", WITHOUT  WARRANTY  OF ANY  KIND,
 * EXPRESS OR  IMPLIED, INCLUDING  BUT NOT LIMITED  TO THE  WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR  A PARTICULAR PURPOSE AND NONINFRINGEMENT
 * OF  THIRD PARTY  RIGHTS. IN  NO EVENT  SHALL THE  COPYRIGHT  HOLDER OR
 * HOLDERS  INCLUDED IN  THIS  NOTICE BE  LIABLE  FOR ANY  CLAIM, OR  ANY
 * SPECIAL INDIRECT  OR CONSEQUENTIAL DAMAGES, OR  ANY DAMAGES WHATSOEVER
 * RESULTING FROM LOSS  OF USE, DATA OR PROFITS, WHETHER  IN AN ACTION OF
 * CONTRACT, NEGLIGENCE  OR OTHER TORTIOUS  ACTION, ARISING OUT OF  OR IN
 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 * 
 * Except as  contained in  this notice, the  name of a  copyright holder
 * shall not be used in advertising or otherwise to promote the sale, use
 * or other dealings in this Software without prior written authorization
 * of the copyright holder.
 *
 */

package org.slf4j.helpers;

import java.util.ArrayList;
import java.util.List;

import org.slf4j.ILoggerFactory;
import org.slf4j.Logger;

/**
 * SubstituteLoggerFactory is an trivial implementation of {@link
 * ILoggerFactory} which always returns the unique instance of NOPLogger.
 * 
 * <p>
 * It used as a temporary substitute for the real ILoggerFactory during its
 * auto-configuration which may re-enter LoggerFactory to obtain logger
 * instances. See also http://bugzilla.slf4j.org/show_bug.cgi?id=106
 * 
 * @author Ceki G&uuml;lc&uuml;
 */
public class SubstituteLoggerFactory implements ILoggerFactory {

  // keep a record of requested logger names
  final List loggerNameList = new ArrayList();

  public Logger getLogger(String name) {
    loggerNameList.add(name);
    return NOPLogger.NOP_LOGGER;
  }

  public List getLoggerNameList() {
    return loggerNameList;
  }

}