NAME

RDF::Core::Parser - RDF Parser

DESCRIPTION

A module for parsing XML documents containing RDF data. It's based on XML::Parser. Parser goes through XML and calls what is referenced in Assert option for each statement found. CAUTION: If you parse more documents into one model, you need to set distinct BNodePrefix (see below) for each document. This way you avoid mixing anonymous resources from distinct documents together.

SYNOPSIS

  require RDF::Core::Parser;

  my %options = (Assert => \&handleAssert,
                 BaseURI => "http://www.foo.com/",
                 BNodePrefix => "genid"
                );
  my $parser = new RDF::Core::Parser(%options);
  $parser->parseFile('./rdfFile.xml');
  #or
  $parser->parse($rdfString);

Interface

• new(%options)

  Available options are

  • Assert

    A reference to a subroutine, that is called for every assertion that parser generates.

  • BaseURI

    A base URI of parsed document. It will be used to resolve relative URI references.

  • BNodePrefix

    Blank node identifier is generated as "_:" concatenated with BNodePrefix value concatenated with counter number. Default BnodePrefix is "a".

  • InlineURI

    Deprecated.

• parse($string)

• parseFile($fileName)

Assert handler

Assert handler is called with key value pairs in a parameters array.

Keys are:

• subject_ns, subject_name, subject_uri

  namespace, local value and URI of subject

• predicate_ns, predicate_name, predicate_uri

  namespace, local value and URI of predicate

• object_ns, object_name, object_uri

  namespace, local value and URI of object, if the object is a resource

  or

• object_literal, object_lang, object_datatype

  object value for literal, it's language and datatype

LICENSE

This package is subject to the MPL (or the GPL alternatively).

AUTHOR

Ginger Alliance, rdf@gingerall.cz

SEE ALSO

RDF::Core::Model::Parser