001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache license, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the license for the specific language governing permissions and
015 * limitations under the license.
016 */
017package org.apache.logging.log4j.core.layout.internal;
018
019import java.util.List;
020
021/**
022 * Includes only the listed keys.
023 */
024public class IncludeChecker implements ListChecker {
025    private final List<String> list;
026
027    public IncludeChecker(final List<String> list) {
028        this.list = list;
029    }
030    @Override
031    public boolean check(final String key) {
032        return list.contains(key);
033    }
034
035    @Override
036    public String toString() {
037        return "ThreadContextIncludes=" + list.toString();
038    }
039}
040