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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