NAME

Attean::QuadModel - RDF model backed by a quad-store

VERSION

This document describes Attean::QuadModel version 0.023

SYNOPSIS

  use v5.14;
  use Attean;
  my $model = Attean::QuadModel->new( store => $store );

DESCRIPTION

The Attean::QuadModel class represents a model that is backed by a single Attean::API::QuadStore object. It conforms to the Attean::API::Model role.

The Attean::QuadModel constructor requires one named argument:

store

A Attean::API::QuadStore object representing the backing quad-store.

METHODS

get_quads ( $subject, $predicate, $object, $graph )

Returns an Attean::API::Iterator for quads in the model that match the supplied $subject, $predicate, $object, and $graph. Any of these terms may be undefined or a Attean::API::Variable object, in which case that term will be considered as a wildcard for the purposes of matching.

The returned iterator conforms to both Attean::API::Iterator and Attean::API::QuadIterator.

plans_for_algebra( $algebra, $model, $active_graphs, $default_graphs )

Delegates to the underlying store if the store consumes Attean::API::CostPlanner.

cost_for_plan( $plan )

Delegates to the underlying store if the store consumes Attean::API::CostPlanner.

BUGS

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

SEE ALSO

AUTHOR

Gregory Todd Williams <gwilliams@cpan.org>

COPYRIGHT

Copyright (c) 2014--2019 Gregory Todd Williams. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.