001    /****************************************************************
002     * Licensed to the Apache Software Foundation (ASF) under one   *
003     * or more contributor license agreements.  See the NOTICE file *
004     * distributed with this work for additional information        *
005     * regarding copyright ownership.  The ASF licenses this file   *
006     * to you under the Apache License, Version 2.0 (the            *
007     * "License"); you may not use this file except in compliance   *
008     * with the License.  You may obtain a copy of the License at   *
009     *                                                              *
010     *   http://www.apache.org/licenses/LICENSE-2.0                 *
011     *                                                              *
012     * Unless required by applicable law or agreed to in writing,   *
013     * software distributed under the License is distributed on an  *
014     * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY       *
015     * KIND, either express or implied.  See the License for the    *
016     * specific language governing permissions and limitations      *
017     * under the License.                                           *
018     ****************************************************************/
019    
020    package org.apache.james.mime4j.dom;
021    
022    import org.apache.james.mime4j.MimeException;
023    
024    /**
025     * A MessageBuilderFactory is used to create EntityBuilder instances.
026     *
027     * MessageBuilderFactory.newInstance() is used to get access to an implementation
028     * of MessageBuilderFactory.
029     * Then the method newMessageBuilder is used to create a new EntityBuilder object.
030     */
031    public abstract class MessageServiceFactory {
032    
033        public static MessageServiceFactory newInstance() throws MimeException {
034            return ServiceLoader.load(MessageServiceFactory.class);
035        }
036    
037        public abstract MessageBuilder newMessageBuilder();
038    
039        public abstract MessageWriter newMessageWriter();
040    
041        public abstract void setAttribute(String name, Object value) throws IllegalArgumentException;
042    
043    }