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package javax.mail;
import javax.activation.DataSource;
/**
* MultipartDataSource is a DataSource that contains body
* parts. This allows "mail aware" DataContentHandlers to
* be implemented more efficiently by being aware of such
* DataSources and using the appropriate methods to access
* BodyParts.
*
* Note that the data of a MultipartDataSource is also available as
* an input stream.
*
* This interface will typically be implemented by providers that
* preparse multipart bodies, for example an IMAP provider.
*
* @author John Mani
* @see javax.activation.DataSource
*/
public interface MultipartDataSource extends DataSource {
/**
* Return the number of enclosed BodyPart objects.
*
* @return number of parts
*/
public int getCount();
/**
* Get the specified Part. Parts are numbered starting at 0.
*
* @param index the index of the desired Part
* @return the Part
* @exception IndexOutOfBoundsException if the given index
* is out of range.
* @exception MessagingException for other failures
*/
public BodyPart getBodyPart(int index) throws MessagingException;
}