NAME

RDF::Cowl - A lightweight API for working with OWL 2 ontologies

VERSION

version 1.0.0

SYNOPSIS

  use RDF::Cowl;
  
  use boolean;
  use constant ONTO => 'corpus/example_pizza.owl';
  use constant NS => "http://www.co-ode.org/ontologies/pizza/pizza.owl#";
  use constant CLASS_NAME => "Food";
  
  my $manager = RDF::Cowl::Manager->new;
  my $onto = do { try { $manager->read_path(ONTO) }
    catch($e) { die "Failed to load ontology @{[ ONTO ]}: $e"; }
  };
  
  my $cls = RDF::Cowl::Class->from_string(NS . CLASS_NAME);
  
  my @subclasses;
  $onto->iterate_sub_classes( $cls, sub ($subclass) {
    push @subclasses, $subclass->get_iri->get_rem
      if $subclass->isa('RDF::Cowl::Class');
  
    return true;
  }, false );

  is \@subclasses, bag {
    item 'IceCream';
    item 'Pizza';
    item 'PizzaBase';
    item 'PizzaTopping';
    end();
  }, 'Got Food direct subclasses';

DESCRIPTION

Cowl provides an API for parsing, querying, editing, and writing OWL 2 ontologies. It currently supports processing OWL2 Functional Syntax.

EXAMPLES

For now, the best place to look for example code is the tests under the t/upstream directory.

SEE ALSO

• Cowl documentation

• Alien::Cowl

AUTHOR

Zakariyya Mughal <zmughal@cpan.org>

COPYRIGHT AND LICENSE

Copyright (C) 2024 by Auto-Parallel Technologies, Inc..

This is free software, licensed under Eclipse Public License - v 2.0.