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.address.AddressList;
025    import org.apache.james.mime4j.dom.field.AddressListField;
026    import org.apache.james.mime4j.field.address.AddressBuilder;
027    import org.apache.james.mime4j.field.address.ParseException;
028    import org.apache.james.mime4j.stream.Field;
029    
030    /**
031     * Address list field such as <code>To</code> or <code>Reply-To</code>.
032     */
033    public class AddressListFieldImpl extends AbstractField implements AddressListField {
034    
035        private boolean parsed = false;
036    
037        private AddressList addressList;
038        private ParseException parseException;
039    
040        AddressListFieldImpl(Field rawField, DecodeMonitor monitor) {
041            super(rawField, monitor);
042        }
043    
044        /**
045         * @see org.apache.james.mime4j.dom.field.AddressListField#getAddressList()
046         */
047        public AddressList getAddressList() {
048            if (!parsed)
049                parse();
050    
051            return addressList;
052        }
053    
054        /**
055         * @see org.apache.james.mime4j.dom.field.AddressListField#getParseException()
056         */
057        @Override
058        public ParseException getParseException() {
059            if (!parsed)
060                parse();
061    
062            return parseException;
063        }
064    
065        private void parse() {
066            String body = getBody();
067    
068            try {
069                addressList = AddressBuilder.DEFAULT.parseAddressList(body, monitor);
070            } catch (ParseException e) {
071                parseException = e;
072            }
073    
074            parsed = true;
075        }
076    
077        public static final FieldParser<AddressListField> PARSER = new FieldParser<AddressListField>() {
078    
079            public AddressListField parse(final Field rawField, final DecodeMonitor monitor) {
080                return new AddressListFieldImpl(rawField, monitor);
081            }
082    
083        };
084    }