1 /**
2 * Copyright (c) 2004-2011 QOS.ch
3 * All rights reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining
6 * a copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be
14 * included in all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
17 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
19 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
20 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
21 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
22 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23 *
24 */
25 package org.slf4j.helpers;
26
27 import java.util.Map;
28
29 import org.slf4j.spi.MDCAdapter;
30
31 /**
32 * This adapter is an empty implementation of the {@link MDCAdapter} interface.
33 * It is used for all logging systems which do not support mapped
34 * diagnostic contexts such as JDK14, simple and NOP.
35 *
36 * @author Ceki Gülcü
37 *
38 * @since 1.4.1
39 */
40 public class NOPMDCAdapter implements MDCAdapter {
41
42 public void clear() {
43 }
44
45 public String get(String key) {
46 return null;
47 }
48
49 public void put(String key, String val) {
50 }
51
52 public void remove(String key) {
53 }
54
55 public Map<String, String> getCopyOfContextMap() {
56 return null;
57 }
58
59 public void setContextMap(Map<String, String> contextMap) {
60 // NOP
61 }
62
63 }