1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache license, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the license for the specific language governing permissions and
15 * limitations under the license.
16 */
17 package org.apache.logging.log4j.spi;
18
19 import java.util.HashMap;
20 import java.util.Map;
21
22 /**
23 * {@code ThreadContextMap} implementation used when either of system properties {@code disableThreadContextMap} or .
24 * {@code disableThreadContext} is {@code true}. This implementation does nothing.
25 *
26 * @since 2.7
27 */
28 public class NoOpThreadContextMap implements ThreadContextMap {
29 @Override
30 public void clear() {
31 }
32
33 @Override
34 public boolean containsKey(final String key) {
35 return false;
36 }
37
38 @Override
39 public String get(final String key) {
40 return null;
41 }
42
43 @Override
44 public Map<String, String> getCopy() {
45 return new HashMap<>();
46 }
47
48 @Override
49 public Map<String, String> getImmutableMapOrNull() {
50 return null;
51 }
52
53 @Override
54 public boolean isEmpty() {
55 return true;
56 }
57
58 @Override
59 public void put(final String key, final String value) {
60 }
61
62 @Override
63 public void remove(final String key) {
64 }
65 }