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 020package org.apache.james.mime4j.field; 021 022import java.io.StringReader; 023import java.util.Date; 024 025import org.apache.james.mime4j.codec.DecodeMonitor; 026import org.apache.james.mime4j.dom.FieldParser; 027import org.apache.james.mime4j.dom.field.DateTimeField; 028import org.apache.james.mime4j.field.datetime.parser.DateTimeParser; 029import org.apache.james.mime4j.field.datetime.parser.ParseException; 030import org.apache.james.mime4j.field.datetime.parser.TokenMgrError; 031import org.apache.james.mime4j.stream.Field; 032 033/** 034 * Date-time field such as <code>Date</code> or <code>Resent-Date</code>. 035 */ 036public class DateTimeFieldImpl extends AbstractField implements DateTimeField { 037 private boolean parsed = false; 038 039 private Date date; 040 private ParseException parseException; 041 042 DateTimeFieldImpl(Field rawField, DecodeMonitor monitor) { 043 super(rawField, monitor); 044 } 045 046 /** 047 * @see org.apache.james.mime4j.dom.field.DateTimeField#getDate() 048 */ 049 public Date getDate() { 050 if (!parsed) 051 parse(); 052 053 return date; 054 } 055 056 /** 057 * @see org.apache.james.mime4j.dom.field.DateTimeField#getParseException() 058 */ 059 @Override 060 public ParseException getParseException() { 061 if (!parsed) 062 parse(); 063 064 return parseException; 065 } 066 067 private void parse() { 068 String body = getBody(); 069 070 try { 071 date = new DateTimeParser(new StringReader(body)).parseAll() 072 .getDate(); 073 } catch (ParseException e) { 074 parseException = e; 075 } catch (TokenMgrError e) { 076 parseException = new ParseException(e.getMessage()); 077 } 078 079 parsed = true; 080 } 081 082 public static final FieldParser<DateTimeField> PARSER = new FieldParser<DateTimeField>() { 083 084 public DateTimeField parse(final Field rawField, final DecodeMonitor monitor) { 085 return new DateTimeFieldImpl(rawField, monitor); 086 } 087 088 }; 089}