1Attean::TripleModel(3)User Contributed Perl DocumentationAttean::TripleModel(3)
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NAME

6       Attean::TripleModel - RDF model backed by a set of triple-stores
7

VERSION

9       This document describes Attean::TripleModel version 0.033
10

SYNOPSIS

12         use v5.14;
13         use Attean;
14         my $model = Attean::TripleModel->new( stores => {
15           'http://example.org/graph1' => $store1,
16           'http://example.org/graph2' => $store2,
17         } );
18

DESCRIPTION

20       The Attean::TripleModel class represents a model that is backed by a
21       set of Attean::API::TripleStore objects, identified by an IRI string.
22       It conforms to the Attean::API::Model role.
23
24       The Attean::TripleModel constructor requires one named argument:
25
26       stores
27           A hash mapping graph IRI values to Attean::API::TripleStore objects
28           representing the backing triple-store for that graph.
29

METHODS

31       "size"
32       "count_quads"
33       "count_quads_estimate"
34       "holds"
35       "get_graphs"
36       "get_quads ( $subject, $predicate, $object, $graph )"
37           Returns an Attean::API::Iterator for quads in the model that match
38           the supplied $subject, $predicate, $object, and $graph.  Any of
39           these terms may be undefined or a Attean::API::Variable object, in
40           which case that term will be considered as a wildcard for the
41           purposes of matching.
42
43           The returned iterator conforms to both Attean::API::Iterator and
44           Attean::API::QuadIterator.
45
46       "plans_for_algebra( $algebra, $planner, $active_graphs, $default_graphs
47       )"
48           Delegates to an underlying store if the active graph is bound to
49           the store, and the store consumes Attean::API::CostPlanner.
50
51       cost_for_plan( $plan )
52           Attempts to delegate to all the underlying stores if that store
53           consumes Attean::API::CostPlanner.
54
55       "add_store( $graph => $store )"
56           Add the Attean::TripleStore $store object to the model using the
57           IRI string value $graph as the graph name.
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59       create_graph( $graph )
60           Create a new Attean::TripleStore and add it to the model using the
61           Attean::API::IRI $graph as the graph name.
62
63           The store is constructed by using this object's "store_constructor"
64           attribute:
65
66             my $store = $self->store_constructor->($graph);
67
68       drop_graph( $graph )
69           Removes the store associated with the given $graph.
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71       "add_quad ( $quad )"
72           Adds the specified $quad to the underlying model.
73
74       "remove_quad ( $quad )"
75           Removes the specified $quad from the underlying store.
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77       drop_graph( $graph )
78           Removes the store associated with the given $graph.
79
80       clear_graph( $graph )
81           Removes all quads with the given $graph.
82

BUGS

84       Please report any bugs or feature requests to through the GitHub web
85       interface at <https://github.com/kasei/attean/issues>.
86

SEE ALSO

AUTHOR
89       Gregory Todd Williams  "<gwilliams@cpan.org>"
90

92       Copyright (c) 2014--2022 Gregory Todd Williams.  This program is free
93       software; you can redistribute it and/or modify it under the same terms
94       as Perl itself.
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98perl v5.36.0                      2023-01-19            Attean::TripleModel(3)



        

    


            
        

        

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