NAME

RDFStore::RDFNode - An RDF graph node

SYNOPSIS

        package myNode;

        use RDFStore::RDFNode;
        @myNode::ISA = qw ( RDFStore::RDFNode );

        sub new {
                my $self = $_[0]->SUPER::new();
                $self->{mylabel} = $_[1];
                bless $self,$_[0];
        };

        sub getLabel {
                return $_[0]->{mylabel};
        };

        package main;

        my $node = new myNode('My generic node');
        my $node1 = new myNode('Your generic node');

        print $node->toString." is ";
        print "not "
                unless $node->equals($node1);
        print " equal to ".$node1->toString."\n";
        

DESCRIPTION

RDFStore::RDFNode is the base abstract class for RDFStore::Literal and RDFStore::Resource.

METHODS

new

This is a class method, the constructor for RDFStore::RDFNode.

getLabel

Return the label of the RDFNode as perl scalar

toString

Return the textual represention of the RDFNode

getDigest

Return a Cryptographic Digest (SHA-1 by default) of the node label - see RDFStore::Digest::Digestable(3)

equals

Compare two RDFNodes.

SEE ALSO

RDFStore::Literal(3) RDFStore::Resource(3) RDFStore(3) RDFStore::Digest::Digestable(3)

ABOUT RDF

 http://www.w3.org/TR/rdf-primer/

 http://www.w3.org/TR/rdf-mt

 http://www.w3.org/TR/rdf-syntax-grammar/

 http://www.w3.org/TR/rdf-schema/

 http://www.w3.org/TR/1999/REC-rdf-syntax-19990222 (obsolete)

AUTHOR

        Alberto Reggiori <areggiori@webweaving.org>