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.core.lookup;
18
19 /**
20 * A default lookup for others to extend.
21 *
22 * @since 2.1
23 */
24 public abstract class AbstractLookup implements StrLookup {
25
26 /**
27 * Calls {@code lookup(null, key);}
28 *
29 * @see StrLookup#lookup(LogEvent, String)
30 */
31 @Override
32 public String lookup(final String key) {
33 return lookup(null, key);
34 }
35
36 }