Building Time Aware Applications in RDF

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01-22-2009

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Building Time Aware Applications in RDF

HPL-2009-6 Building Time Aware Applications in RDF - McBride, Brian
Keyword(s): semantic web, temporal RDF, temporal query, temporal modeling, temporal application.
Abstract: Several techniques for using RDF to model change over time in a domain are reviewed and a new approach with a lower triple count than previous approaches is described. It is argued that the application programmer requires tool support so that she does not have to deal with the details of the modelin ...
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rdf::helper::rdfredland::query

RDF::Helper::RDFRedland::Query(3pm)			User Contributed Perl Documentation		       RDF::Helper::RDFRedland::Query(3pm)

NAME

       RDF::Helper::RDFReland::Query - Perlish convenience extension for RDF::Redland::Query

SYNOPSIS

	 my $model = RDF::Redland::Model->new(
	     RDF::Redland::Storage->new( %storage_options )
	 );

	 my $rdf = RDF::Helper->new(
	   Namespaces => \%namespaces,
	   BaseURI => 'http://domain/NS/2004/09/03-url#'
	 );

	 my $q_obj = $rdf->new_query( $sparql_text, 'sparql' );

	 # arrays
	 while ( my $row = $q_obj->selectrow_arrayref ) {
	     # $row is an array reference.
	 }

	 # hashes
	 while ( my $row = $q_obj->selectrow_hashref ) {
	     # $row is a hash reference.
	 }

DESCRIPTION

       RDF::Helper::RDFRedland::Query is the object retuned from RDF::Helper's new_query() method when using RDF::Redland as the base interface
       class. This object provides everything that an instance of RDF::Redland::Query offers, plus the convenience methods  detailed below.

METHODS

   selectrow_arrayref
       Returns each row as a Perl array references. The order of the array's indices will correspond to the order of the variable bindings in the
       query.

   selectrow_hashref
       Returns each row as a Perl hash references. The keys in the hash will have the same names as the variable bindings in the query.

AUTHOR

       Kip Hampton, khampton@totalcinema.com

COPYRIGHT

       Copyright (c) 2004 Kip Hampton.	=head1 LICENSE

       This module is free sofrware; you can redistribute it and/or modify it under the same terms as Perl itself.

SEE ALSO

       RDF::Helper RDF::Redland::Query.

perl v5.14.2							    2011-06-24				       RDF::Helper::RDFRedland::Query(3pm)

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