/usr/share/perl5/Attean/API/Store.pm is in libattean-perl 0.012-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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use warnings;
=head1 NAME
Attean::API::Store - Triple/quad store role
=head1 VERSION
This document describes Attean::Store version 0.012
=head1 DESCRIPTION
The Attean::Store role is an empty role that more specialized roles conform to:
=over 4
=item * L<Attean::API::TripleStore>
=item * L<Attean::API::MutableTripleStore>
=item * L<Attean::API::ETagCacheableTripleStore>
=item * L<Attean::API::TimeCacheableTripleStore>
=item * L<Attean::API::QuadStore>
=item * L<Attean::API::MutableQuadStore>
=item * L<Attean::API::ETagCacheableQuadStore>
=item * L<Attean::API::TimeCacheableQuadStore>
=back
=cut
package Attean::API::Store 0.012 {
use Moo::Role;
}
package Attean::API::TripleStore 0.012 {
use Moo::Role;
use Scalar::Util qw(blessed);
use namespace::clean;
with 'Attean::API::Store';
requires 'get_triples';
before 'get_triples' => sub {
if (scalar(@_) == 2 and blessed($_[1]) and not($_[1]->does('Attean::API::TermOrVariable'))) {
my $type = ref($_[0]);
die "get_triples called with a single $type argument, but expecting a list of terms/variables";
}
};
sub count_triples {
my $self = shift;
my $iter = $self->get_triples(@_);
my $count = 0;
while (my $r = $iter->next) {
$count++;
}
return $count;
}
sub count_triples_estimate {
my $self = shift;
return $self->count_triples(@_);
}
sub size {
my $self = shift;
return $self->count_triples();
}
}
package Attean::API::MutableTripleStore 0.012 {
use Moo::Role;
with 'Attean::API::TripleStore';
requires 'add_triple';
requires 'remove_triple';
before 'add_triple' => sub {
my $self = shift;
my $quad = shift;
unless ($quad->is_ground) {
die "Cannot add a non-ground triple (with variables) to a model";
}
};
}
package Attean::API::ETagCacheableTripleStore 0.012 {
use Moo::Role;
with 'Attean::API::TripleStore';
requires 'etag_value_for_triples';
}
package Attean::API::TimeCacheableTripleStore 0.012 {
use Moo::Role;
with 'Attean::API::TripleStore';
requires 'mtime_for_triples';
}
package Attean::API::QuadStore 0.012 {
use Moo::Role;
use Scalar::Util qw(blessed);
use namespace::clean;
with 'Attean::API::Store';
requires 'get_quads';
before 'get_quads' => sub {
if (scalar(@_) == 2 and blessed($_[1]) and not($_[1]->does('Attean::API::TermOrVariable'))) {
my $type = ref($_[0]);
die "get_quads called with a single $type argument, but expecting a list of terms/variables";
}
};
sub count_quads {
my $self = shift;
my $iter = $self->get_quads(@_);
my $count = 0;
while (my $r = $iter->next) {
$count++;
}
return $count;
}
sub count_quads_estimate {
my $self = shift;
return $self->count_quads(@_);
}
sub get_graphs {
my $self = shift;
my $iter = $self->get_quads(@_);
my %graphs;
while (my $r = $iter->next) {
my $g = $r->graph;
$graphs{ $g->as_string }++;
}
return Attean::ListIterator->new( values => [map { Attean::IRI->new($_) } keys %graphs], item_type => 'Attean::API::Term' );
}
sub size {
my $self = shift;
return $self->count_quads();
}
}
package Attean::API::MutableQuadStore 0.012 {
use Moo::Role;
use Type::Tiny::Role;
with 'Attean::API::QuadStore';
requires 'add_quad';
requires 'remove_quad';
requires 'create_graph';
requires 'drop_graph';
requires 'clear_graph';
before 'add_quad' => sub {
my $self = shift;
my $quad = shift;
unless ($quad->is_ground) {
die "Cannot add a non-ground quad (with variables) to a store";
}
};
sub add_iter {
my $self = shift;
my $iter = shift;
my $type = $iter->item_type;
use Data::Dumper;
die "Iterator type $type isn't quads" unless (Role::Tiny::does_role($type, 'Attean::API::Quad'));
while (my $q = $iter->next) {
$self->add_quad($q);
}
}
}
package Attean::API::ETagCacheableQuadStore 0.012 {
use Moo::Role;
with 'Attean::API::QuadStore';
requires 'etag_value_for_quads';
}
package Attean::API::TimeCacheableQuadStore 0.012 {
use Moo::Role;
with 'Attean::API::QuadStore';
requires 'mtime_for_quads';
}
1;
__END__
=head1 BUGS
Please report any bugs or feature requests to through the GitHub web interface
at L<https://github.com/kasei/attean/issues>.
=head1 SEE ALSO
L<http://www.perlrdf.org/>
=head1 AUTHOR
Gregory Todd Williams C<< <gwilliams@cpan.org> >>
=head1 COPYRIGHT
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.
=cut
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