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    package org.apache.logging.log4j.message;
018    
019    /**
020     * Enables use of {@link java.util.Formatter} strings in message strings.
021     * <p>
022     * Creates {@link StringFormattedMessage} instances for {@link #newMessage(String, Object...)}.
023     * </p>
024     * <p>
025     * This class is immutable.
026     * </p>
027     */
028    public final class StringFormatterMessageFactory extends AbstractMessageFactory {
029    
030        private static final long serialVersionUID = 1L;
031        
032        /**
033         * Instance of StringFormatterMessageFactory.
034         */
035        public static final StringFormatterMessageFactory INSTANCE = new StringFormatterMessageFactory();
036    
037        /**
038         * Creates {@link StringFormattedMessage} instances.
039         *
040         * @param message The message pattern.
041         * @param params The parameters to the message.
042         * @return The Message.
043         *
044         * @see MessageFactory#newMessage(String, Object...)
045         */
046        @Override
047        public Message newMessage(final String message, final Object... params) {
048            return new StringFormattedMessage(message, params);
049        }
050    }