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.field;
021
022 import org.apache.james.mime4j.codec.DecodeMonitor;
023 import org.apache.james.mime4j.dom.FieldParser;
024 import org.apache.james.mime4j.dom.field.ContentIdField;
025 import org.apache.james.mime4j.stream.Field;
026
027 /**
028 * Represents a <code>Content-Transfer-Encoding</code> field.
029 */
030 public class ContentIdFieldImpl extends AbstractField implements ContentIdField {
031
032 private boolean parsed = false;
033 private String id;
034
035 ContentIdFieldImpl(Field rawField, DecodeMonitor monitor) {
036 super(rawField, monitor);
037 }
038
039 private void parse() {
040 parsed = true;
041 String body = getBody();
042 if (body != null) {
043 id = body.trim();
044 } else {
045 id = null;
046 }
047 }
048
049 public String getId() {
050 if (!parsed) {
051 parse();
052 }
053 return id;
054 }
055
056 public static final FieldParser<ContentIdField> PARSER = new FieldParser<ContentIdField>() {
057
058 public ContentIdField parse(final Field rawField, final DecodeMonitor monitor) {
059 return new ContentIdFieldImpl(rawField, monitor);
060 }
061
062 };
063
064 }
065