1   /* 
2    * Copyright (c) 2004-2005 SLF4J.ORG
3    * Copyright (c) 2004-2005 QOS.ch
4    *
5    * All rights reserved.
6    * 
7    * Permission is hereby granted, free of charge, to any person obtaining
8    * a copy of this software and associated documentation files (the
9    * "Software"), to  deal in  the Software without  restriction, including
10   * without limitation  the rights to  use, copy, modify,  merge, publish,
11   * distribute, and/or sell copies of  the Software, and to permit persons
12   * to whom  the Software is furnished  to do so, provided  that the above
13   * copyright notice(s) and this permission notice appear in all copies of
14   * the  Software and  that both  the above  copyright notice(s)  and this
15   * permission notice appear in supporting documentation.
16   * 
17   * THE  SOFTWARE IS  PROVIDED  "AS  IS", WITHOUT  WARRANTY  OF ANY  KIND,
18   * EXPRESS OR  IMPLIED, INCLUDING  BUT NOT LIMITED  TO THE  WARRANTIES OF
19   * MERCHANTABILITY, FITNESS FOR  A PARTICULAR PURPOSE AND NONINFRINGEMENT
20   * OF  THIRD PARTY  RIGHTS. IN  NO EVENT  SHALL THE  COPYRIGHT  HOLDER OR
21   * HOLDERS  INCLUDED IN  THIS  NOTICE BE  LIABLE  FOR ANY  CLAIM, OR  ANY
22   * SPECIAL INDIRECT  OR CONSEQUENTIAL DAMAGES, OR  ANY DAMAGES WHATSOEVER
23   * RESULTING FROM LOSS  OF USE, DATA OR PROFITS, WHETHER  IN AN ACTION OF
24   * CONTRACT, NEGLIGENCE  OR OTHER TORTIOUS  ACTION, ARISING OUT OF  OR IN
25   * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
26   * 
27   * Except as  contained in  this notice, the  name of a  copyright holder
28   * shall not be used in advertising or otherwise to promote the sale, use
29   * or other dealings in this Software without prior written authorization
30   * of the copyright holder.
31   *
32   */
33  
34  package org.slf4j.helpers;
35  
36  import java.util.ArrayList;
37  import java.util.List;
38  
39  import org.slf4j.ILoggerFactory;
40  import org.slf4j.Logger;
41  
42  /**
43   * SubstituteLoggerFactory is an trivial implementation of {@link
44   * ILoggerFactory} which always returns the unique instance of NOPLogger.
45   * 
46   * <p>
47   * It used as a temporary substitute for the real ILoggerFactory during its
48   * auto-configuration which may re-enter LoggerFactory to obtain logger
49   * instances. See also http://bugzilla.slf4j.org/show_bug.cgi?id=106
50   * 
51   * @author Ceki G&uuml;lc&uuml;
52   */
53  public class SubstituteLoggerFactory implements ILoggerFactory {
54  
55    // keep a record of requested logger names
56    final List loggerNameList = new ArrayList();
57  
58    public Logger getLogger(String name) {
59      loggerNameList.add(name);
60      return NOPLogger.NOP_LOGGER;
61    }
62  
63    public List getLoggerNameList() {
64      return loggerNameList;
65    }
66  
67  }