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.parser;
021    
022    import org.apache.james.mime4j.MimeException;
023    import org.apache.james.mime4j.stream.BodyDescriptor;
024    import org.apache.james.mime4j.stream.Field;
025    
026    import java.io.IOException;
027    import java.io.InputStream;
028    
029    /**
030     * Abstract base class for custom {@link ContentHandler} implementations. Methods of this class
031     * take no action and are expected to be selectively overridden by super-classes.
032     */
033    public abstract class AbstractContentHandler implements ContentHandler {
034    
035        public void endMultipart() throws MimeException {
036        }
037    
038        public void startMultipart(BodyDescriptor bd) throws MimeException {
039        }
040    
041        public void body(BodyDescriptor bd, InputStream is)
042                throws MimeException, IOException {
043        }
044    
045        public void endBodyPart() throws MimeException {
046        }
047    
048        public void endHeader() throws MimeException {
049        }
050    
051        public void endMessage() throws MimeException {
052        }
053    
054        public void epilogue(InputStream is) throws MimeException, IOException {
055        }
056    
057        public void field(Field field) throws MimeException {
058        }
059    
060        public void preamble(InputStream is) throws MimeException, IOException {
061        }
062    
063        public void startBodyPart() throws MimeException {
064        }
065    
066        public void startHeader() throws MimeException {
067        }
068    
069        public void startMessage() throws MimeException {
070        }
071    
072        public void raw(InputStream is) throws MimeException, IOException {
073        }
074    
075    }