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TOBYINK / HTML-Microformats-0.100 / lib / HTML / Microformats / Format / hRecipe.pm 

            

              
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=head1 NAME
HTML::Microformats::Format::hRecipe - the hRecipe microformat
=head1 SYNOPSIS
 use Data::Dumper;
 use HTML::Microformats::DocumentContext;
 use HTML::Microformats::Format::hRecipe;
 my $context = HTML::Microformats::DocumentContext->new($dom, $uri);
 my @recipes = HTML::Microformats::Format::hRecipe->extract_all(
                   $dom->documentElement, $context);
 foreach my $recipe (@recipes)
 {
   print $recipe->get_summary . "\n";
 }
=head1 DESCRIPTION
HTML::Microformats::Format::hRecipe inherits from HTML::Microformats::Format. See the
base class definition for a description of property getter/setter methods,
constructors, etc.
=cut
package HTML::Microformats::Format::hRecipe;
use base qw(HTML::Microformats::Format HTML::Microformats::Mixin::Parser);
use common::sense;
use 5.008;
our $VERSION = '0.100';
sub new
{
        my ($class, $element, $context) = @_;
        my $cache = $context->cache;
         
        return $cache->get($context, $element, $class)
                if defined $cache && $cache->get($context, $element, $class);
         
        my $self = {
                'element'    => $element ,
                'context'    => $context ,
                'cache'      => $cache ,
                'id'         => $context->make_bnode($element) ,
                };
         
        bless $self, $class;
         
        my $clone = $element->cloneNode(1);  
        $self->_expand_patterns($clone);
        $self->_simple_parse($clone);
        $cache->set($context, $element, $class, $self)
                if defined $cache;
        return $self;
}
sub format_signature
{
        my $lr   = 'http://linkedrecipes.org/schema/';
        my $hr   = 'http://ontologi.es/hrecipe#';
        my $rdfs = 'http://www.w3.org/2000/01/rdf-schema#';
         
        return {
                'root' => 'hrecipe',
                'classes' => [
                        ['fn',            '1'],
                        ['ingredient',    '+'],
                        ['yield',         '?'],
                        ['instructions',  'H?'],
                        ['duration',      'D*'],
                        ['photo',         'u*'],
                        ['summary',       '?'],
                        ['author',        'M*', {embedded=>'hCard !person'}],
                        ['published',     'd?'],
                        ['nutrition',     '*'],
                ],
                'options' => {
                        'rel-tag' => 'tag',
                },
                'rdf:type' => ["${lr}Recipe"] ,
                'rdf:property' => {
                        'fn'                => { 'literal'  => ["${rdfs}label"] } ,
                        'yield'             => { 'literal'  => ["${lr}servings"] } ,
                        'html_instructions' => { 'literal'  => ["${hr}instructions"], 'literal_datatype'=>'http://www.w3.org/1999/02/22-rdf-syntax-ns#XMLLiteral' } ,
                        'duration'          => { 'literal'  => ["${lr}time"] } ,
                        'photo'             => { 'resource' => ['http://xmlns.com/foaf/0.1/depiction'] },
                        'summary'           => { 'literal'  => ["${rdfs}comment"] } ,
                        'published'         => { 'literal'  => ['http://purl.org/dc/terms/issued'] },
                        'nutrition'         => { 'literal'  => ["${lr}dietaryInformation"] } ,
                },
        };
}
sub add_to_model
{
        my $self  = shift;
        my $model = shift;
        $self->_simple_rdf($model);
        my $lr   = 'http://linkedrecipes.org/schema/';
        my $hr   = 'http://ontologi.es/hrecipe#';
        my $rdfs = 'http://www.w3.org/2000/01/rdf-schema#';
        # Handle ingredients.
        my $i = 0;
        foreach my $ingredient (@{ $self->data->{'ingredient'} })
        {
                $model->add_statement(RDF::Trine::Statement->new(
                        $self->id(1),
                        RDF::Trine::Node::Resource->new("${lr}ingredient"),
                        $self->id(1, "ingredient.${i}"),
                        ));
                $model->add_statement(RDF::Trine::Statement->new(
                        $self->id(1, "ingredient.${i}"),
                        RDF::Trine::Node::Resource->new("http://www.w3.org/1999/02/22-rdf-syntax-ns#type"),
                        RDF::Trine::Node::Resource->new("${lr}IngredientPortion"),
                        ));
                $model->add_statement(RDF::Trine::Statement->new(
                        $self->id(1, "ingredient.${i}"),
                        RDF::Trine::Node::Resource->new("${rdfs}label"),
                        $self->_make_literal($ingredient),
                        ));
                 
                $i++;
        }
         
        foreach my $author (@{ $self->data->{'author'} })
        {
                $model->add_statement(RDF::Trine::Statement->new(
                        $self->id(1),
                        RDF::Trine::Node::Resource->new("http://xmlns.com/foaf/0.1/maker"),
                        $author->id(1, "holder"),
                        ));
                $author->add_to_model($model);
        }
        return $self;
}
sub profiles
{
        my $class = shift;
        return qw(http://purl.org/uF/hRecipe/0.23/);
}
1;
=head1 MICROFORMAT
HTML::Microformats::Format::hRecipe supports hRecipe 0.23 as described at
L<http://microformats.org/wiki/hrecipe>.
=head1 RDF OUTPUT
L<http://linkedrecipes.org/schema/>,
L<http://ontologi.es/hrecipe#>.
=head1 BUGS
Please report any bugs to L<http://rt.cpan.org/>.
=head1 SEE ALSO
L<HTML::Microformats::Format>,
L<HTML::Microformats>.
=head1 AUTHOR
Toby Inkster E<lt>tobyink@cpan.orgE<gt>.
=head1 COPYRIGHT
Copyright 2008-2010 Toby Inkster
This library is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
=cut