Bio::SearchIO::XML::BlastHandler(3) XML Handler for NCBI Blast XML parsing.


# This is not to be used directly.


This is the XML handler for BLAST XML parsing. Currently it passes elements off to the event handler, which is ultimately responsible for Bio::Search object generation.

This was recently split off from the original code for Bio::SearchIO::blastxml primarily for maintenance purposes.


In addition to parts of the Bio:: hierarchy, this module uses:


which comes with the XML::SAX distribution.


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Please direct usage questions or support issues to the mailing list:

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rather than to the module maintainer directly. Many experienced and reponsive experts will be able look at the problem and quickly address it. Please include a thorough description of the problem with code and data examples if at all possible.

Reporting Bugs

Report bugs to the Bioperl bug tracking system to help us keep track of the bugs and their resolution. Bug reports can be submitted via the web:

AUTHOR - Jason Stajich, Chris Fields

Email Email cjfields-at-uiuc dot edu


The rest of the documentation details each of the object methods. Internal methods are usually preceded with a _

SAX methods


 Title   : start_document
 Usage   : $parser->start_document;
 Function: SAX method to indicate starting to parse a new document
 Returns : none
 Args    : none


 Title   : end_document
 Usage   : $parser->end_document;
 Function: SAX method to indicate finishing parsing a new document
 Returns : Bio::Search::Result::ResultI object
 Args    : none


 Title   : start_element
 Usage   : $parser->start_element($data)
 Function: SAX method to indicate starting a new element
 Returns : none
 Args    : hash ref for data


 Title   : end_element
 Usage   : $parser->end_element($data)
 Function: Signals finishing an element
 Returns : Bio::Search object dpending on what type of element
 Args    : hash ref for data


 Title   : characters
 Usage   : $parser->characters($data)
 Function: Signals new characters to be processed
 Returns : characters read
 Args    : hash ref with the key 'Data'