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 */
017
018package org.apache.logging.log4j.message;
019
020import java.util.Map;
021
022import org.apache.logging.log4j.util.PerformanceSensitive;
023
024/**
025 * A {@link StringMapMessage} typed to {@link String}-only values. This is like the MapMessage class before 2.9.
026 * 
027 * @since 2.9
028 */
029@PerformanceSensitive("allocation")
030@AsynchronouslyFormattable
031public class StringMapMessage extends MapMessage<StringMapMessage, String> {
032
033    private static final long serialVersionUID = 1L;
034
035    /**
036     * Constructs a new instance.
037     */
038    public StringMapMessage() {
039        super();
040    }
041
042    /**
043     * Constructs a new instance.
044     * 
045     * @param initialCapacity
046     *            the initial capacity.
047     */
048    public StringMapMessage(final int initialCapacity) {
049        super(initialCapacity);
050    }
051
052    /**
053     * Constructs a new instance based on an existing Map.
054     * 
055     * @param map
056     *            The Map.
057     */
058    public StringMapMessage(final Map<String, String> map) {
059        super(map);
060    }
061
062    /**
063     * Constructs a new instance based on an existing Map.
064     * @param map The Map.
065     * @return A new StringMapMessage
066     */
067    @Override
068    public StringMapMessage newInstance(final Map<String, String> map) {
069        return new StringMapMessage(map);
070    }
071}