/usr/share/perl5/RDF/Trine/Iterator/JSONHandler.pm is in librdf-trine-perl 1.011-2.
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 | # RDF::Trine::Iterator::JSONHandler
# -----------------------------------------------------------------------------
=head1 NAME
RDF::Trine::Iterator::JSONHandler - JSON Handler for parsing SPARQL JSON Results format
=head1 VERSION
This document describes RDF::Trine::Iterator::JSONHandler version 1.011
=head1 STATUS
This module's API and functionality should be considered unstable.
In the future, this module may change in backwards-incompatible ways,
or be removed entirely. If you need functionality that this module provides,
please L<get in touch|http://www.perlrdf.org/>.
=head1 SYNOPSIS
use RDF::Trine::Iterator::JSONHandler;
my $handler = RDF::Trine::Iterator::JSONHandler->new();
my $iter = $handler->parse( $json );
=head1 METHODS
=over 4
=cut
package RDF::Trine::Iterator::JSONHandler;
use strict;
use warnings;
use Scalar::Util qw(refaddr);
use JSON;
use Data::Dumper;
use RDF::Trine::VariableBindings;
our ($VERSION);
BEGIN {
$VERSION = '1.011';
}
=item C<< new >>
Returns a new JSON SPARQL Results parser object.
=cut
sub new {
my $class = shift;
my %args = %{ shift || {} };
return bless(\%args, $class);
}
=item C<< parse ( $json ) >>
Returns a RDF::Trine::Iterator object containing the data from the supplied JSON
in JSON SPARQL Results format.
=cut
sub parse {
my $self = shift;
my $json = shift;
my $data = from_json($json, {utf8 => 1});
my $head = $data->{head};
my $vars = $head->{vars};
my $res = $data->{results};
if (defined(my $bool = $data->{boolean})) {
my $value = ($bool) ? 1 : 0;
return RDF::Trine::Iterator::Boolean->new([$value]);
} elsif (my $binds = $res->{bindings}) {
my @results;
foreach my $b (@$binds) {
my %data;
foreach my $v (@$vars) {
if (defined(my $value = $b->{ $v })) {
my $type = $value->{type};
if ($type eq 'uri') {
my $data = $value->{value};
$data{ $v } = RDF::Trine::Node::Resource->new( $data );
} elsif ($type eq 'bnode') {
my $data = $value->{value};
$data{ $v } = RDF::Trine::Node::Blank->new( $data );
} elsif ($type eq 'literal') {
my $data = $value->{value};
if (my $lang = $value->{'xml:lang'}) {
$data{ $v } = RDF::Trine::Node::Literal->new( $data, $lang );
} else {
$data{ $v } = RDF::Trine::Node::Literal->new( $data );
}
} elsif ($type eq 'typed-literal') {
my $data = $value->{value};
my $dt = $value->{datatype};
if ($self->{canonicalize}) {
$data = RDF::Trine::Node::Literal->canonicalize_literal_value( $data, $dt, 0 );
}
$data{ $v } = RDF::Trine::Node::Literal->new( $data, undef, $dt );
} else {
warn Dumper($data, $b);
throw RDF::Trine::Error -text => "Unknown node type $type during parsing of SPARQL JSON Results";
}
}
}
push(@results, RDF::Trine::VariableBindings->new( \%data ));
}
return RDF::Trine::Iterator::Bindings->new( \@results );
}
warn '*** ' . Dumper($data);
}
1;
__END__
=back
=head1 BUGS
Please report any bugs or feature requests to through the GitHub web interface
at L<https://github.com/kasei/perlrdf/issues>.
=head1 AUTHOR
Gregory Todd Williams C<< <gwilliams@cpan.org> >>
=head1 COPYRIGHT
Copyright (c) 2006-2012 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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