Attean::TripleModel - RDF model backed by a set of triple-stores
This document describes Attean::TripleModel version 0.012
use v5.14; use Attean; my $model = Attean::TripleModel->new( stores => { 'http://example.org/graph1' => $store1, 'http://example.org/graph2' => $store2, } );
The 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:
A hash mapping graph IRI values to Attean::API::TripleStore objects representing the backing triple-store for that graph.
size
count_quads
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.
$subject
$predicate
$object
$graph
The returned iterator conforms to both Attean::API::Iterator and Attean::API::QuadIterator.
plans_for_algebra( $algebra, $model, $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.
$store
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:
store_constructor
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.
$quad
remove_quad ( $quad )
Removes the specified $quad from the underlying store.
clear_graph( $graph )
Removes all quads with the given $graph.
Please report any bugs or feature requests to through the GitHub web interface at https://github.com/kasei/attean/issues.
http://www.perlrdf.org/
Gregory Todd Williams <gwilliams@cpan.org>
<gwilliams@cpan.org>
Copyright (c) 2014--2016 Gregory Todd Williams. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
To install Attean, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Attean
CPAN shell
perl -MCPAN -e shell install Attean
For more information on module installation, please visit the detailed CPAN module installation guide.