1 /* 2 * Copyright 2001-2004 The Apache Software Foundation. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package org.apache.log4j; 18 19 public class MDC { 20 21 public static void put(String key, String value) { 22 org.slf4j.MDC.put(key, value); 23 } 24 25 public static void put(String key, Object value) { 26 if (value != null) { 27 put(key, value.toString()); 28 } else { 29 put(key, null); 30 } 31 } 32 33 public static Object get(String key) { 34 return org.slf4j.MDC.get(key); 35 } 36 37 public static void remove(String key) { 38 org.slf4j.MDC.remove(key); 39 } 40 41 public static void clear() { 42 org.slf4j.MDC.clear(); 43 } 44 }