/usr/share/perl5/RDF/Query/Node/Variable.pm is in librdf-query-perl 2.916-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 | # RDF::Query::Node::Variable
# -----------------------------------------------------------------------------
=head1 NAME
RDF::Query::Node::Variable - RDF Node class for variables
=head1 VERSION
This document describes RDF::Query::Node::Variable version 2.916.
=cut
package RDF::Query::Node::Variable;
use strict;
use warnings;
no warnings 'redefine';
use base qw(RDF::Query::Node RDF::Trine::Node::Variable);
use Data::Dumper;
use Scalar::Util qw(blessed);
use Carp qw(carp croak confess);
######################################################################
our ($VERSION);
BEGIN {
$VERSION = '2.916';
}
######################################################################
=head1 METHODS
=head1 METHODS
Beyond the methods documented below, this class inherits methods from the
L<RDF::Query::Node> and L<RDF::Trine::Node::Variable> classes.
=over 4
=cut
use overload '""' => sub { $_[0]->sse };
=item C<< new ( $name ) >>
Returns a new variable object.
=cut
my $COUNTER = 0;
sub new {
my $class = shift;
my $name = shift;
unless (defined($name)) {
$name = 'v' . time() . 'r' . $COUNTER++;
}
return $class->SUPER::new( $name );
}
=item C<< as_sparql >>
Returns the SPARQL string for this node.
=cut
sub as_sparql {
my $self = shift;
return $self->sse;
}
=item C<< as_hash >>
Returns the query as a nested set of plain data structures (no objects).
=cut
sub as_hash {
my $self = shift;
my $context = shift;
return {
type => 'node',
variable => $self->name,
};
}
package RDF::Query::Node::Variable::ExpressionProxy;
use strict;
use warnings;
use base qw(RDF::Query::Node::Variable);
use Scalar::Util qw(blessed refaddr);
=begin private
=item C<< new >>
=cut
{my %vars;
sub new {
my $class = shift;
my $name = shift;
my @vars = @_;
my $self = $class->SUPER::new( $name );
if (@vars) {
$vars{ refaddr($self) } = [map {blessed($_) ? $_ : RDF::Query::Node::Variable->new($_)} @vars];
}
return $self;
}
=item C<< as_sparql >>
=cut
sub as_sparql {
my $self = shift;
return $self->name;
}
=item C<< referenced_variables >>
=cut
sub referenced_variables {
my $self = shift;
my @vars = map { blessed($_) ? $_->name : $_ } @{ $vars{ refaddr($self) } || [] };
return RDF::Query::_uniq(@vars);
}
sub nonaggregated_referenced_variables {
return;
}
sub DESTROY {
my $self = shift;
delete $vars{ refaddr($self) };
}
}
=end private
=cut
1;
__END__
=back
=head1 AUTHOR
Gregory Todd Williams <gwilliams@cpan.org>
=cut
|