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
44 * {@link 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 Gülcü
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 synchronized (loggerNameList) {
60 loggerNameList.add(name);
61 }
62 return NOPLogger.NOP_LOGGER;
63 }
64
65 public List getLoggerNameList() {
66 List copy = new ArrayList();
67 synchronized (loggerNameList) {
68 copy.addAll(loggerNameList);
69 }
70 return copy;
71 }
72
73 }
74