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.geronimo.mail.handlers; 021 022 import javax.activation.ActivationDataFlavor; 023 import javax.activation.DataContentHandler; 024 import javax.activation.DataSource; 025 import javax.mail.internet.ContentType; 026 import javax.mail.Message; 027 import javax.mail.MessageAware; 028 import javax.mail.MessageContext; 029 import javax.mail.MessagingException; 030 import javax.mail.internet.MimeMessage; 031 import javax.mail.internet.MimeUtility; 032 import javax.mail.internet.ParseException; 033 import java.awt.datatransfer.DataFlavor; 034 import java.io.IOException; 035 import java.io.InputStreamReader; 036 import java.io.OutputStream; 037 import java.io.OutputStreamWriter; 038 import java.io.StringWriter; 039 import java.io.UnsupportedEncodingException; 040 041 /** 042 * @version $Rev: 467553 $ $Date: 2006-10-25 06:01:51 +0200 (Mi, 25. Okt 2006) $ 043 */ 044 public class MessageHandler implements DataContentHandler { 045 /** 046 * Field dataFlavor 047 */ 048 ActivationDataFlavor dataFlavor; 049 050 public MessageHandler(){ 051 dataFlavor = new ActivationDataFlavor(java.lang.String.class, "message/rfc822", "Text"); 052 } 053 054 055 /** 056 * Method getDF 057 * 058 * @return dataflavor 059 */ 060 protected ActivationDataFlavor getDF() { 061 return dataFlavor; 062 } 063 064 /** 065 * Method getTransferDataFlavors 066 * 067 * @return dataflavors 068 */ 069 public DataFlavor[] getTransferDataFlavors() { 070 return (new DataFlavor[]{dataFlavor}); 071 } 072 073 /** 074 * Method getTransferData 075 * 076 * @param dataflavor 077 * @param datasource 078 * @return 079 * @throws IOException 080 */ 081 public Object getTransferData(DataFlavor dataflavor, DataSource datasource) 082 throws IOException { 083 if (getDF().equals(dataflavor)) { 084 return getContent(datasource); 085 } 086 return null; 087 } 088 089 /** 090 * Method getContent 091 * 092 * @param datasource 093 * @return 094 * @throws IOException 095 */ 096 public Object getContent(DataSource datasource) throws IOException { 097 098 try { 099 // if this is a proper message, it implements the MessageAware interface. We need this to 100 // get the associated session. 101 if (datasource instanceof MessageAware) { 102 MessageContext context = ((MessageAware)datasource).getMessageContext(); 103 // construct a mime message instance from the stream, associating it with the 104 // data source session. 105 return new MimeMessage(context.getSession(), datasource.getInputStream()); 106 } 107 } catch (MessagingException e) { 108 // we need to transform any exceptions into an IOException. 109 throw new IOException("Exception writing MimeMultipart: " + e.toString()); 110 } 111 return null; 112 } 113 114 /** 115 * Method writeTo 116 * 117 * @param object 118 * @param s 119 * @param outputstream 120 * @throws IOException 121 */ 122 public void writeTo(Object object, String s, OutputStream outputstream) throws IOException { 123 // proper message type? 124 if (object instanceof Message) { 125 try { 126 ((Message)object).writeTo(outputstream); 127 } catch (MessagingException e) { 128 throw new IOException("Error parsing message: " + e.toString()); 129 } 130 } 131 } 132 } 133