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.impl;
35  
36  import org.slf4j.Logger;
37  import org.slf4j.ILoggerFactory;
38  
39  import java.util.HashMap;
40  import java.util.Map;
41  
42  /**
43   * JDK14LoggerFactory is an implementation of {@link ILoggerFactory} returning
44   * the appropriately named {@link JDK14LoggerAdapter} instance.
45   * 
46   * @author Ceki Gülcü
47   */
48  public class JDK14LoggerFactory implements ILoggerFactory {
49  
50    // key: name (String), value: a JDK14LoggerAdapter;
51    Map loggerMap;
52  
53    public JDK14LoggerFactory() {
54      loggerMap = new HashMap();
55    }
56  
57    /*
58     * (non-Javadoc)
59     * 
60     * @see org.slf4j.ILoggerFactory#getLogger(java.lang.String)
61     */
62    public synchronized Logger getLogger(String name) {
63      Logger ulogger = null;
64      // protect against concurrent access of loggerMap
65      synchronized (this) {
66        // the root logger is called "" in JUL
67        if(name.equalsIgnoreCase(Logger.ROOT_LOGGER_NAME)) {
68          name = "";
69        }
70        ulogger = (Logger) loggerMap.get(name);
71        if (ulogger == null) {
72          java.util.logging.Logger logger = java.util.logging.Logger
73              .getLogger(name);
74          ulogger = new JDK14LoggerAdapter(logger);
75          loggerMap.put(name, ulogger);
76        }
77      }
78      return ulogger;
79    }
80  }