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 java.io.IOException;
023    import java.io.InputStream;
024    
025    import org.apache.james.mime4j.MimeException;
026    
027    /**
028     * An interface to build instances of {@link Message} and other DOM elements either without
029     * any content, by copying content of an existing object or by reading content from
030     * an {@link InputStream}.
031     */
032    public interface MessageBuilder {
033    
034        Header newHeader();
035    
036        Header newHeader(Header source);
037    
038        Multipart newMultipart(String subType);
039    
040        Multipart newMultipart(Multipart source);
041    
042        Message newMessage();
043    
044        Message newMessage(Message source);
045    
046        Header parseHeader(InputStream source) throws MimeException, IOException;
047    
048        Message parseMessage(InputStream source) throws MimeException, IOException;
049    
050    }