Attean::TripleModel - Online Linux Manual PageSection : 3
Updated : 2021-02-08
Source : perl v5.32.1
Note : User Contributed Perl Documentation
NAMEAttean::TripleModel − RDF model backed by a set of triple−stores
VERSIONThis document describes Attean::TripleModel version 0.030
SYNOPSIS​ use v5.14; ​ use Attean; ​ my $model = Attean::TripleModel−>new( stores => { ​ 'http://example.org/graph1' => $store1, ​ 'http://example.org/graph2' => $store2, ​ } );
DESCRIPTIONThe Attean::TripleModel class represents a model that is backed by a set of Attean::API::TripleStore objects, identified by an IRI string. It conforms to the Attean::API::Model role. The Attean::TripleModel constructor requires one named argument: stores A hash mapping graph IRI values to Attean::API::TripleStore objects representing the backing triple-store for that graph.
METHODSsize count_quads count_quads_estimate holds get_graphs 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, $planner, $active_graphs, $default_graphs ) Delegates to an underlying store if the active graph is bound to the store, and the store consumes Attean::API::CostPlanner. cost_for_plan( $plan ) Attempts to delegate to all the underlying stores if that store consumes Attean::API::CostPlanner. add_store( $graph => $store ) Add the Attean::TripleStore $store object to the model using the ​IRI string value $graph as the graph name. create_graph( $graph ) Create a new Attean::TripleStore and add it to the model using the Attean::API::IRI $graph as the graph name. The store is constructed by using this object's store_constructor attribute: ​ my $store = $self−>store_constructor−>($graph); drop_graph( $graph ) Removes the store associated with the given $graph. add_quad ( $quad ) Adds the specified $quad to the underlying model. remove_quad ( $quad ) Removes the specified $quad from the underlying store. drop_graph( $graph ) Removes the store associated with the given $graph. clear_graph( $graph ) Removes all quads with the given $graph.
BUGSPlease report any bugs or feature requests to through the GitHub web interface at <https://github.com/kasei/attean/issues>.
SEE ALSO
AUTHORGregory Todd Williams <gwilliams@cpan.org>
COPYRIGHTCopyright (c) 2014−−2020 Gregory Todd Williams. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. 0
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