JavaMail 1.2
============
Following is a description of the new APIs that are being
introduced in JavaMail 1.2. The numbers in parentheses
are bug numbers; you can find more information about the
bug reports at:
http://developer.java.sun.com/developer/bugParade/index.html
Please send comments and feedback to javamail@sun.com.
===================================================================
1. New protected field and methods (4129743)
--------------------------------------------
To simplify creating subclasses of MimeMessage, the following
field and method that were previously private are now protected:
/**
* A flag indicating whether the message has been modified.
* If the message has not been modified, any data in the
* <code>content</code> array is assumed to be valid and is used
* directly in the <code>writeTo</code> method. This flag is
* set to true when an empty message is created or when the
* <code>saveChanges</code> method is called.
*/
protected boolean modified = false;
/**
* Parse the InputStream setting the <code>headers</code> and
* <code>content</code> fields appropriately. Also resets the
* <code>modified</code> flag. <p>
*
* This method is intended for use by subclasses that need to
* control when the InputStream is parsed.
*
* @param is The message input stream
* @exception MessagingException
*/
protected void parse(InputStream is) throws MessagingException
The javadocs for the following exsting methods have been updated to
describe the use of the modified flag:
/**
* Default constructor. An empty message object is created.
* The <code>headers</code> field is set to an empty InternetHeaders
* object. The <code>flags</code> field is set to an empty Flags
* object. The <code>modified</code> flag is set to true.
*/
public MimeMessage(Session session)
/**
* Output the message as an RFC 822 format stream, without
* specified headers. If the <code>modified</code> flag is not
* set and the <code>content</code> array is not null, the
* <code>content</code> array is written directly, after
* writing the appropriate message headers.
*
* @exception javax.mail.MessagingException
* @exception IOException if an error occurs writing to the stream
* or if an error is generated by the
* javax.activation layer.
* @see javax.activation.DataHandler#writeTo
*/
public void writeTo(OutputStream os, String[] ignoreList)
throws IOException, MessagingException
/**
* Updates the appropriate header fields of this message to be
* consistent with the message's contents. If this message is
* contained in a Folder, any changes made to this message are
* committed to the containing folder. <p>
*
* If any part of a message's headers or contents are changed,
* <code>saveChanges</code> must be called to ensure that those
* changes are permanent. Otherwise, any such modifications may or
* may not be saved, depending on the folder implementation. <p>
*
* Messages obtained from folders opened READ_ONLY should not be
* modified and saveChanges should not be called on such messages. <p>
*
* This method sets the <code>modified</code> flag to true and then
* calls the <code>updateHeaders<code> method.
*
* @exception IllegalWriteException if the underlying
* implementation does not support modification
* @exception IllegalStateException if this message is
* obtained from a READ_ONLY folder.
* @exception MessagingException
*/
public void saveChanges() throws MessagingException
The following method is added to MimeMessage:
/**
* Create and return an InternetHeaders object that loads the
* headers from the given InputStream. Subclasses can override
* this method to return a subclass of InternetHeaders, if
* necessary. This implementation simply constructs and returns
* an InternetHeaders object.
*
* @param is the InputStream to read the headers from
* @exception MessagingException
*/
protected InternetHeaders createInternetHeaders(InputStream is)
throws MessagingException
Likewise, to simplify creating subclasses of MimeMultipart, the parse
method is made protected:
/**
* Parse the InputStream from our DataSource, constructing the
* appropriate MimeBodyParts. The <code>parsed</code> flag is
* set to true, and if true on entry nothing is done. This
* method is called by all other methods that need data for
* the body parts, to make sure the data has been parsed.
*/
protected synchronized void parse() throws MessagingException
and the following protected methods are added:
/**
* Create and return an InternetHeaders object that loads the
* headers from the given InputStream. Subclasses can override
* this method to return a subclass of InternetHeaders, if
* necessary. This implementation simply constructs and returns
* an InternetHeaders object.
*
* @param is the InputStream to read the headers from
* @exception MessagingException
*/
protected InternetHeaders createInternetHeaders(InputStream is)
throws MessagingException
/**
* Create and return a MimeBodyPart object to represent a
* body part parsed from the InputStream. Subclasses can override
* this method to return a subclass of MimeBodyPart, if
* necessary. This implementation simply constructs and returns
* a MimeBodyPart object.
*
* @param headers the headers for the body part
* @param content the content ofthe body part
* @exception MessagingException
*/
protected MimeBodyPart createMimeBodyPart(InternetHeaders headers,
byte[] content) throws MessagingException
/**
* Create and return a MimeBodyPart object to represent a
* body part parsed from the InputStream. Subclasses can override
* this method to return a subclass of MimeBodyPart, if
* necessary. This implementation simply constructs and returns
* a MimeBodyPart object.
*
* @param is InputStream containing the body part
* @exception MessagingException
*/
protected MimeBodyPart createMimeBodyPart(InputStream is)
throws MessagingException
===================================================================
2. MimeMessage and MimeBodyPart getRawInputStream method (4124840)
------------------------------------------------------------------
In some cases it is desirable to get the data for a body part
before JavaMail attempts to decode it. This is particularly important
if the Content-Transfer-Encoding header is incorrect. (For example,
some mail software is known to use "7-bit" instead of the MIME
defined "7bit".) Access to this data is currently provided
through the protected getContentStream method. Since simply
making this method public has the potential to cause a source
incompatibility for any subclasses that declare this method as
protected, we instead add a new public method that calls this
protected method:
/**
* Return an InputStream to the raw data with any Content-Transfer-Encoding
* intact. This method is useful if the "Content-Transfer-Encoding"
* header is incorrect or corrupt, which would prevent the
* <code>getInputStream</code> method or <code>getContent</code> method
* from returning the correct data. In such a case the application may
* use this method and attempt to decode the raw data itsel
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