| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache license, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the license for the specific language governing permissions and |
| * limitations under the license. |
| */ |
| package org.apache.logging.log4j.core.layout.internal; |
| |
| import java.util.List; |
| |
| /** |
| * Class Description goes here. |
| */ |
| |
| public interface ListChecker { |
| |
| static final NoopChecker NOOP_CHECKER = new NoopChecker(); |
| |
| boolean check(final String key); |
| |
| /** |
| * Does nothing. |
| */ |
| public class NoopChecker implements ListChecker { |
| @Override |
| public boolean check(final String key) { |
| return true; |
| } |
| |
| @Override |
| public String toString() { |
| return ""; |
| } |
| } |
| } |