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.ILoggerFactory;
37 import org.slf4j.LoggerFactory;
38 import org.slf4j.spi.LoggerFactoryBinder;
39
40 /**
41 * The binding of {@link LoggerFactory} class with an actual instance of
42 * {@link ILoggerFactory} is performed using information returned by this class.
43 *
44 * @author Ceki Gülcü
45 */
46 public class StaticLoggerBinder implements LoggerFactoryBinder {
47
48 /**
49 * The unique instance of this class.
50 */
51 private static final StaticLoggerBinder SINGLETON = new StaticLoggerBinder();
52
53 /**
54 * Return the singleton of this class.
55 *
56 * @return the StaticLoggerBinder singleton
57 */
58 public static final StaticLoggerBinder getSingleton() {
59 return SINGLETON;
60 }
61
62 /**
63 * Version tag used to check compatibility. The value of this field is
64 * modified with each release.
65 */
66
67 //to avoid constant folding by the compiler, this field must *not* be final
68 public static String REQUESTED_API_VERSION = "1.5.6";
69
70 // Binding specific code:
71 private static final String loggerFactoryClassStr = JCLLoggerFactory.class
72 .getName();
73
74 /**
75 * The ILoggerFactory instance returned by the {@link #getLoggerFactory}
76 * method should always be the same object
77 */
78 private final ILoggerFactory loggerFactory;
79
80 private StaticLoggerBinder() {
81 // Binding specific code:
82 loggerFactory = new JCLLoggerFactory();
83 }
84
85 public ILoggerFactory getLoggerFactory() {
86 return loggerFactory;
87 }
88
89 public String getLoggerFactoryClassStr() {
90 return loggerFactoryClassStr;
91 }
92 }