com.sun.mail.dsn
Class MessageHeaders

java.lang.Object
  javax.mail.Message
      javax.mail.internet.MimeMessage
          com.sun.mail.dsn.MessageHeaders

All Implemented Interfaces:

MimePart, Part

public class MessageHeaders
extends MimeMessage

A special MimeMessage object that contains only message headers, no content. Used to represent the MIME type text/rfc822-headers.

Since:

JavaMail 1.4

Nested Class Summary

Nested classes/interfaces inherited from class javax.mail.internet.MimeMessage

MimeMessage.RecipientType

Field Summary

Fields inherited from class javax.mail.internet.MimeMessage

content, contentStream, dh, flags, headers, modified, saved

Fields inherited from class javax.mail.Message

expunged, folder, msgnum, session

Fields inherited from interface javax.mail.Part

ATTACHMENT, INLINE

Constructor Summary

MessageHeaders()
Construct a MessageHeaders object.

MessageHeaders(InputStream is)
Constructs a MessageHeaders object from the given InputStream.

MessageHeaders(InternetHeaders headers)
Constructs a MessageHeaders object using the given InternetHeaders.

Method Summary

protected InputStream	getContentStream() Produce the raw bytes of the content.
InputStream	getInputStream() Return a decoded input stream for this Message's "content".
int	getSize() Return the size of this message.
void	setDataHandler(DataHandler dh) Can't set any content for a MessageHeaders object.

Methods inherited from class javax.mail.internet.MimeMessage

addFrom, addHeader, addHeaderLine, addRecipients, addRecipients, createInternetHeaders, createMimeMessage, getAllHeaderLines, getAllHeaders, getAllRecipients, getContent, getContentID, getContentLanguage, getContentMD5, getContentType, getDataHandler, getDescription, getDisposition, getEncoding, getFileName, getFlags, getFrom, getHeader, getHeader, getLineCount, getMatchingHeaderLines, getMatchingHeaders, getMessageID, getNonMatchingHeaderLines, getNonMatchingHeaders, getRawInputStream, getReceivedDate, getRecipients, getReplyTo, getSender, getSentDate, getSubject, isMimeType, isSet, parse, removeHeader, reply, saveChanges, setContent, setContent, setContentID, setContentLanguage, setContentMD5, setDescription, setDescription, setDisposition, setFileName, setFlags, setFrom, setFrom, setHeader, setRecipients, setRecipients, setReplyTo, setSender, setSentDate, setSubject, setSubject, setText, setText, setText, updateHeaders, updateMessageID, writeTo, writeTo

Methods inherited from class javax.mail.Message

addRecipient, getFolder, getMessageNumber, isExpunged, match, setExpunged, setFlag, setMessageNumber, setRecipient

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MessageHeaders

public MessageHeaders()
               throws MessagingException

Construct a MessageHeaders object.

Throws:

MessagingException

MessageHeaders

public MessageHeaders(InputStream is)
               throws MessagingException

Constructs a MessageHeaders object from the given InputStream.

Parameters:

is - InputStream

Throws:

MessagingException

MessageHeaders

public MessageHeaders(InternetHeaders headers)
               throws MessagingException

Constructs a MessageHeaders object using the given InternetHeaders.

Parameters:

headers - InternetHeaders to use

Throws:

MessagingException

Method Detail

getSize

public int getSize()

Return the size of this message. Always returns zero.

Specified by:

getSize in interface Part

Overrides:

getSize in class MimeMessage

Returns:

size of content in bytes

getInputStream

public InputStream getInputStream()

Description copied from class: MimeMessage

Return a decoded input stream for this Message's "content".

This implementation obtains the input stream from the DataHandler, that is, it invokes getDataHandler().getInputStream().

Specified by:

getInputStream in interface Part

Overrides:

getInputStream in class MimeMessage

Returns:

an InputStream

See Also:

MimeMessage.getContentStream(), DataHandler.getInputStream()

getContentStream

protected InputStream getContentStream()

Description copied from class: MimeMessage

Produce the raw bytes of the content. This method is used during parsing, to create a DataHandler object for the content. Subclasses that can provide a separate input stream for just the message content might want to override this method.

This implementation returns a SharedInputStream, if contentStream is not null. Otherwise, it returns a ByteArrayInputStream constructed out of the content byte array.

Overrides:

getContentStream in class MimeMessage

See Also:

MimeMessage.content

setDataHandler

public void setDataHandler(DataHandler dh)
                    throws MessagingException

Can't set any content for a MessageHeaders object.

Specified by:

setDataHandler in interface Part

Overrides:

setDataHandler in class MimeMessage

Parameters:

dh - The DataHandler for the content.

Throws:

MessagingException - always