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/*
* @(#)message_rfc822.java 1.9 07/05/04
*/
package com.sun.mail.handlers;
import java.io.*;
import java.util.Properties;
import java.awt.datatransfer.DataFlavor;
import javax.activation.*;
import javax.mail.*;
import javax.mail.internet.*;
/**
* @version 1.9, 07/05/04
* @author Christopher Cotton
*/
public class message_rfc822 implements DataContentHandler {
ActivationDataFlavor ourDataFlavor = new ActivationDataFlavor(
javax.mail.Message.class,
"message/rfc822",
"Message");
/**
* return the DataFlavors for this <code>DataContentHandler</code>
* @return The DataFlavors.
*/
public DataFlavor[] getTransferDataFlavors() {
return new DataFlavor[] { ourDataFlavor };
}
/**
* return the Transfer Data of type DataFlavor from InputStream
* @param df The DataFlavor.
* @param ins The InputStream corresponding to the data.
* @return a Message object
*/
public Object getTransferData(DataFlavor df, DataSource ds)
throws IOException {
// make sure we can handle this DataFlavor
if (ourDataFlavor.equals(df))
return getContent(ds);
else
return null;
}
/**
* Return the content.
*/
public Object getContent(DataSource ds) throws IOException {
// create a new MimeMessage
try {
Session session;
if (ds instanceof MessageAware) {
MessageContext mc = ((MessageAware)ds).getMessageContext();
session = mc.getSession();
} else {
// Hopefully a rare case. Also hopefully the application
// has created a default Session that can just be returned
// here. If not, the one we create here is better than
// nothing, but overall not a really good answer.
session = Session.getDefaultInstance(new Properties(), null);
}
return new MimeMessage(session, ds.getInputStream());
} catch (MessagingException me) {
throw new IOException("Exception creating MimeMessage in " +
"message/rfc822 DataContentHandler: " + me.toString());
}
}
/**
* construct an object from a byte stream
* (similar semantically to previous method, we are deciding
* which one to support)
*/
public void writeTo(Object obj, String mimeType, OutputStream os)
throws IOException {
// if the object is a message, we know how to write that out
if (obj instanceof Message) {
Message m = (Message)obj;
try {
m.writeTo(os);
} catch (MessagingException me) {
throw new IOException(me.toString());
}
} else {
throw new IOException("unsupported object");
}
}
}
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