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.Deque; 28 import java.util.Map; 29 30 import org.slf4j.spi.MDCAdapter; 31 32 /** 33 * This adapter is an empty implementation of the {@link MDCAdapter} interface. 34 * It is used for all logging systems which do not support mapped 35 * diagnostic contexts such as JDK14, simple and NOP. 36 * 37 * @author Ceki Gülcü 38 * 39 * @since 1.4.1 40 */ 41 public class NOPMDCAdapter implements MDCAdapter { 42 clear()43 public void clear() { 44 } 45 get(String key)46 public String get(String key) { 47 return null; 48 } 49 put(String key, String val)50 public void put(String key, String val) { 51 } 52 remove(String key)53 public void remove(String key) { 54 } 55 getCopyOfContextMap()56 public Map<String, String> getCopyOfContextMap() { 57 return null; 58 } 59 setContextMap(Map<String, String> contextMap)60 public void setContextMap(Map<String, String> contextMap) { 61 // NOP 62 } 63 64 @Override pushByKey(String key, String value)65 public void pushByKey(String key, String value) { 66 } 67 68 @Override popByKey(String key)69 public String popByKey(String key) { 70 return null; 71 } 72 73 @Override getCopyOfDequeByKey(String key)74 public Deque<String> getCopyOfDequeByKey(String key) { 75 return null; 76 } 77 clearDequeByKey(String key)78 public void clearDequeByKey(String key) { 79 } 80 81 } 82