Gregory Todd Williams > RDF-Trine-1.003 > RDF::Trine

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Module Version: 1.003   Source   Latest Release: RDF-Trine-1.007_01

NAME ^

RDF::Trine - An RDF Framework for Perl

VERSION ^

This document describes RDF::Trine version 1.003

SYNOPSIS ^

  use RDF::Trine;
  
  my $store = RDF::Trine::Store::Memory->new();
  my $model = RDF::Trine::Model->new($store);
  
  # parse some web data into the model, and print the count of resulting RDF statements
  RDF::Trine::Parser->parse_url_into_model( 'http://kasei.us/about/foaf.xrdf', $model );
  print $model->size . " RDF statements parsed\n";
  
  # Create a namespace object for the foaf vocabulary
  my $foaf = RDF::Trine::Namespace->new( 'http://xmlns.com/foaf/0.1/' );
  
  # Create a node object for the FOAF name property
  my $pred = $foaf->name;
  # alternatively:
  # my $pred = RDF::Trine::Node::Resource->new('http://xmlns.com/foaf/0.1/name');
  
  # Create an iterator for all the statements in the model with foaf:name as the predicate
  my $iter = $model->get_statements(undef, $pred, undef);
  
  # Now print the results
  print "Names of things:\n";
  while (my $st = $iter->next) {
    my $s = $st->subject;
    my $name = $st->object;
    
    # $s and $name have string overloading, so will print correctly
    print "The name of $s is $name\n";
  }

DESCRIPTION ^

RDF::Trine provides an Resource Descriptive Framework (RDF) with an emphasis on extensibility, API stability, and the presence of a test suite. The package consists of several components:

FUNCTIONS ^

iri ( $iri )

Returns a RDF::Trine::Node::Resource object with the given IRI value.

blank ( $id )

Returns a RDF::Trine::Node::Blank object with the given identifier.

literal ( $value, $lang, $dt )

Returns a RDF::Trine::Node::Literal object with the given value and optional language/datatype.

variable ( $name )

Returns a RDF::Trine::Node::Variable object with the given variable name.

statement ( @nodes )

Returns a RDF::Trine::Statement object with the supplied node objects.

store ( $config )

Returns a RDF::Trine::Store object based on the supplied configuration string. See RDF::Trine::Store for more information on store configuration strings.

BUGS ^

Please report any bugs or feature requests to through the GitHub web interface at https://github.com/kasei/perlrdf/issues.

SEE ALSO ^

http://www.perlrdf.org/

AUTHOR ^

Gregory Todd Williams <gwilliams@cpan.org>

COPYRIGHT ^

Copyright (c) 2006-2012 Gregory Todd Williams. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

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