001/** 002 * Copyright (c) 2004-2011 QOS.ch 003 * All rights reserved. 004 * 005 * Permission is hereby granted, free of charge, to any person obtaining 006 * a copy of this software and associated documentation files (the 007 * "Software"), to deal in the Software without restriction, including 008 * without limitation the rights to use, copy, modify, merge, publish, 009 * distribute, sublicense, and/or sell copies of the Software, and to 010 * permit persons to whom the Software is furnished to do so, subject to 011 * the following conditions: 012 * 013 * The above copyright notice and this permission notice shall be 014 * included in all copies or substantial portions of the Software. 015 * 016 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 017 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 018 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 019 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 020 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 021 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 022 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 023 * 024 */ 025package org.slf4j.helpers; 026 027import java.util.Map; 028 029import org.slf4j.spi.MDCAdapter; 030 031/** 032 * This adapter is an empty implementation of the {@link MDCAdapter} interface. 033 * It is used for all logging systems which do not support mapped 034 * diagnostic contexts such as JDK14, simple and NOP. 035 * 036 * @author Ceki Gülcü 037 * 038 * @since 1.4.1 039 */ 040public class NOPMDCAdapter implements MDCAdapter { 041 042 public void clear() { 043 } 044 045 public String get(String key) { 046 return null; 047 } 048 049 public void put(String key, String val) { 050 } 051 052 public void remove(String key) { 053 } 054 055 public Map<String, String> getCopyOfContextMap() { 056 return null; 057 } 058 059 public void setContextMap(Map<String, String> contextMap) { 060 // NOP 061 } 062 063}