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