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| 1 |  |  |  |  |  |  | =head1 NAME | 
| 2 |  |  |  |  |  |  |  | 
| 3 |  |  |  |  |  |  | AtteanX::Serializer::SPARQLXML - SPARQL Results XML Serializer | 
| 4 |  |  |  |  |  |  |  | 
| 5 |  |  |  |  |  |  | =head1 VERSION | 
| 6 |  |  |  |  |  |  |  | 
| 7 |  |  |  |  |  |  | This document describes AtteanX::Serializer::SPARQLXML version 0.033 | 
| 8 |  |  |  |  |  |  |  | 
| 9 |  |  |  |  |  |  | =head1 SYNOPSIS | 
| 10 |  |  |  |  |  |  |  | 
| 11 |  |  |  |  |  |  | use Attean; | 
| 12 |  |  |  |  |  |  | my $s = Attean->get_serializer('SPARQLXML')->new(); | 
| 13 |  |  |  |  |  |  | $s->serialize_iter_to_io( $fh, $iter ); | 
| 14 |  |  |  |  |  |  |  | 
| 15 |  |  |  |  |  |  | =head1 DESCRIPTION | 
| 16 |  |  |  |  |  |  |  | 
| 17 |  |  |  |  |  |  | ... | 
| 18 |  |  |  |  |  |  |  | 
| 19 |  |  |  |  |  |  | =head1 ATTRIBUTES | 
| 20 |  |  |  |  |  |  |  | 
| 21 |  |  |  |  |  |  | =over 4 | 
| 22 |  |  |  |  |  |  |  | 
| 23 |  |  |  |  |  |  | =item C<< canonical_media_type >> | 
| 24 |  |  |  |  |  |  |  | 
| 25 |  |  |  |  |  |  | =item C<< file_extensions >> | 
| 26 |  |  |  |  |  |  |  | 
| 27 |  |  |  |  |  |  | =back | 
| 28 |  |  |  |  |  |  |  | 
| 29 |  |  |  |  |  |  | =head1 METHODS | 
| 30 |  |  |  |  |  |  |  | 
| 31 |  |  |  |  |  |  | =over 4 | 
| 32 |  |  |  |  |  |  |  | 
| 33 |  |  |  |  |  |  | =cut | 
| 34 |  |  |  |  |  |  |  | 
| 35 | 3 |  |  | 3 |  | 9480 | use v5.14; | 
|  | 3 |  |  |  |  | 11 |  | 
| 36 | 3 |  |  | 3 |  | 17 | use warnings; | 
|  | 3 |  |  |  |  | 6 |  | 
|  | 3 |  |  |  |  | 124 |  | 
| 37 |  |  |  |  |  |  |  | 
| 38 |  |  |  |  |  |  | use Moo; | 
| 39 | 3 |  |  | 3 |  | 15 | use Types::Standard qw(Str ArrayRef); | 
|  | 3 |  |  |  |  | 4 |  | 
|  | 3 |  |  |  |  | 18 |  | 
| 40 | 3 |  |  | 3 |  | 966 | use Encode qw(encode encode_utf8); | 
|  | 3 |  |  |  |  | 5 |  | 
|  | 3 |  |  |  |  | 41 |  | 
| 41 | 3 |  |  | 3 |  | 1939 | use Scalar::Util qw(blessed); | 
|  | 3 |  |  |  |  | 8 |  | 
|  | 3 |  |  |  |  | 146 |  | 
| 42 | 3 |  |  | 3 |  | 16 | use Attean::ListIterator; | 
|  | 3 |  |  |  |  | 7 |  | 
|  | 3 |  |  |  |  | 121 |  | 
| 43 | 3 |  |  | 3 |  | 16 | use List::MoreUtils qw(any); | 
|  | 3 |  |  |  |  | 5 |  | 
|  | 3 |  |  |  |  | 74 |  | 
| 44 | 3 |  |  | 3 |  | 14 | use namespace::clean; | 
|  | 3 |  |  |  |  | 6 |  | 
|  | 3 |  |  |  |  | 23 |  | 
| 45 | 3 |  |  | 3 |  | 2717 |  | 
|  | 3 |  |  |  |  | 6 |  | 
|  | 3 |  |  |  |  | 33 |  | 
| 46 |  |  |  |  |  |  | has 'canonical_media_type' => (is => 'ro', isa => Str, init_arg => undef, default => 'application/sparql-results+xml'); | 
| 47 |  |  |  |  |  |  |  | 
| 48 |  |  |  |  |  |  | =item C<< media_types >> | 
| 49 |  |  |  |  |  |  |  | 
| 50 |  |  |  |  |  |  | Returns a list of media types that identify the format produced by this serializer. | 
| 51 |  |  |  |  |  |  |  | 
| 52 |  |  |  |  |  |  | =cut | 
| 53 |  |  |  |  |  |  |  | 
| 54 |  |  |  |  |  |  | return [qw(application/sparql-results+xml)]; | 
| 55 |  |  |  |  |  |  | } | 
| 56 | 9 |  |  | 9 | 1 | 27 |  | 
| 57 |  |  |  |  |  |  | =item C<< file_extensions >> | 
| 58 |  |  |  |  |  |  |  | 
| 59 |  |  |  |  |  |  | Returns a list of file extensions associated with the serialized format. | 
| 60 |  |  |  |  |  |  |  | 
| 61 |  |  |  |  |  |  | =cut | 
| 62 |  |  |  |  |  |  |  | 
| 63 |  |  |  |  |  |  |  | 
| 64 |  |  |  |  |  |  | =item C<< serialize_iter_to_io( $fh, $iterator ) >> | 
| 65 | 5 |  |  | 5 | 1 | 18 |  | 
| 66 |  |  |  |  |  |  | Serializes the L<Attean::API::Binding> objects from C<< $iterator >> to the | 
| 67 |  |  |  |  |  |  | L<IO::Handle> object C<< $fh >>. | 
| 68 |  |  |  |  |  |  |  | 
| 69 |  |  |  |  |  |  | =cut | 
| 70 |  |  |  |  |  |  |  | 
| 71 |  |  |  |  |  |  | my $self	= shift; | 
| 72 |  |  |  |  |  |  | my $fh		= shift; | 
| 73 |  |  |  |  |  |  | my $iter	= shift; | 
| 74 |  |  |  |  |  |  | print {$fh} <<"END"; | 
| 75 |  |  |  |  |  |  | <?xml version="1.0" encoding="utf-8"?> | 
| 76 |  |  |  |  |  |  | <sparql xmlns="http://www.w3.org/2005/sparql-results#"> | 
| 77 |  |  |  |  |  |  | <head> | 
| 78 |  |  |  |  |  |  | END | 
| 79 |  |  |  |  |  |  | my @vars	= @{ $iter->variables }; | 
| 80 |  |  |  |  |  |  | if ($iter->does('Attean::API::ResultIterator')) { | 
| 81 |  |  |  |  |  |  | foreach my $v (@vars) { | 
| 82 |  |  |  |  |  |  | print $fh qq(\t<variable name="$v"/>\n); | 
| 83 |  |  |  |  |  |  | } | 
| 84 |  |  |  |  |  |  | } | 
| 85 |  |  |  |  |  |  |  | 
| 86 |  |  |  |  |  |  | print {$fh} <<"END"; | 
| 87 |  |  |  |  |  |  | </head> | 
| 88 |  |  |  |  |  |  | <results> | 
| 89 |  |  |  |  |  |  | END | 
| 90 |  |  |  |  |  |  |  | 
| 91 |  |  |  |  |  |  | while (my $t = $iter->next()) { | 
| 92 |  |  |  |  |  |  | print $fh "\t\t<result>\n"; | 
| 93 |  |  |  |  |  |  | foreach my $name (@vars) { | 
| 94 |  |  |  |  |  |  | my $term	= $t->value($name); | 
| 95 |  |  |  |  |  |  | if (blessed($term)) { | 
| 96 |  |  |  |  |  |  | if ($term->does('Attean::API::IRI')) { | 
| 97 |  |  |  |  |  |  | my $label	= $term->value; | 
| 98 |  |  |  |  |  |  | $label	=~ s/&/&/g; | 
| 99 |  |  |  |  |  |  | $label	=~ s/</</g; | 
| 100 |  |  |  |  |  |  | $label	=~ s/"/"/g; | 
| 101 |  |  |  |  |  |  | $label	= encode_utf8($label); | 
| 102 |  |  |  |  |  |  | print $fh qq(\t\t\t<binding name="${name}"><uri>${label}</uri></binding>\n); | 
| 103 |  |  |  |  |  |  | } elsif ($term->does('Attean::API::Literal')) { | 
| 104 |  |  |  |  |  |  | my $label	= $term->value; | 
| 105 |  |  |  |  |  |  | $label	=~ s/&/&/g; | 
| 106 |  |  |  |  |  |  | $label	=~ s/</</g; | 
| 107 |  |  |  |  |  |  | $label	=~ s/"/"/g; | 
| 108 |  |  |  |  |  |  | $label	= encode_utf8($label); | 
| 109 |  |  |  |  |  |  | if (my $lang = $term->language) { | 
| 110 |  |  |  |  |  |  | $label	= qq(<literal xml:lang="${lang}">${label}</literal>); | 
| 111 |  |  |  |  |  |  | } elsif (my $dt = $term->datatype) { | 
| 112 |  |  |  |  |  |  | $label	= qq(<literal datatype=") . $dt->value . qq(">${label}</literal>); | 
| 113 |  |  |  |  |  |  | } else { | 
| 114 |  |  |  |  |  |  | $label	= qq(<literal>${label}</literal>); | 
| 115 |  |  |  |  |  |  | } | 
| 116 |  |  |  |  |  |  | print $fh qq(\t\t\t<binding name="${name}">${label}</binding>\n); | 
| 117 |  |  |  |  |  |  | } elsif ($term->does('Attean::API::Blank')) { | 
| 118 |  |  |  |  |  |  | my $label	= $term->value; | 
| 119 |  |  |  |  |  |  | $label	=~ s/&/&/g; | 
| 120 |  |  |  |  |  |  | $label	=~ s/</</g; | 
| 121 |  |  |  |  |  |  | $label	=~ s/"/"/g; | 
| 122 |  |  |  |  |  |  | $label	= encode_utf8($label); | 
| 123 |  |  |  |  |  |  | print $fh qq(\t\t\t<binding name="${name}"><bnode>${label}</bnode></binding>\n); | 
| 124 |  |  |  |  |  |  | } else { | 
| 125 |  |  |  |  |  |  | die "Term object has an unrecognized type: " . ref($term); | 
| 126 |  |  |  |  |  |  | } | 
| 127 |  |  |  |  |  |  | } | 
| 128 |  |  |  |  |  |  | } | 
| 129 |  |  |  |  |  |  | print $fh "\t\t</result>\n"; | 
| 130 |  |  |  |  |  |  | } | 
| 131 |  |  |  |  |  |  | print {$fh} "</results>\n"; | 
| 132 |  |  |  |  |  |  | print {$fh} "</sparql>\n"; | 
| 133 |  |  |  |  |  |  | return; | 
| 134 |  |  |  |  |  |  | } | 
| 135 |  |  |  |  |  |  |  | 
| 136 |  |  |  |  |  |  | =item C<< serialize_iter_to_bytes( $iterator ) >> | 
| 137 |  |  |  |  |  |  |  | 
| 138 |  |  |  |  |  |  | Serializes the L<Attean::API::Binding> objects from C<< $iterator >> | 
| 139 |  |  |  |  |  |  | and returns the serialization as a UTF-8 encoded byte string. | 
| 140 |  |  |  |  |  |  |  | 
| 141 |  |  |  |  |  |  | =cut | 
| 142 |  |  |  |  |  |  |  | 
| 143 |  |  |  |  |  |  | my $self	= shift; | 
| 144 |  |  |  |  |  |  | my $iter	= shift; | 
| 145 |  |  |  |  |  |  | my $data	= encode('UTF-8', ''); | 
| 146 |  |  |  |  |  |  | open(my $fh, '>', \$data); | 
| 147 |  |  |  |  |  |  | $self->serialize_iter_to_io($fh, $iter); | 
| 148 |  |  |  |  |  |  | close($fh); | 
| 149 |  |  |  |  |  |  | return $data; | 
| 150 |  |  |  |  |  |  | } | 
| 151 | 1 |  |  | 1 |  | 7 |  | 
|  | 1 |  |  |  |  | 2 |  | 
|  | 1 |  |  |  |  | 5 |  | 
| 152 |  |  |  |  |  |  | with 'Attean::API::ResultSerializer', 'Attean::API::AppendableSerializer'; | 
| 153 |  |  |  |  |  |  | } | 
| 154 |  |  |  |  |  |  |  | 
| 155 |  |  |  |  |  |  | 1; | 
| 156 |  |  |  |  |  |  |  | 
| 157 |  |  |  |  |  |  |  | 
| 158 |  |  |  |  |  |  | =back | 
| 159 |  |  |  |  |  |  |  | 
| 160 |  |  |  |  |  |  | =head1 BUGS | 
| 161 |  |  |  |  |  |  |  | 
| 162 |  |  |  |  |  |  | Please report any bugs or feature requests to through the GitHub web interface | 
| 163 |  |  |  |  |  |  | at L<https://github.com/kasei/perlrdf/issues>. | 
| 164 |  |  |  |  |  |  |  | 
| 165 |  |  |  |  |  |  | =head1 AUTHOR | 
| 166 |  |  |  |  |  |  |  | 
| 167 |  |  |  |  |  |  | Gregory Todd Williams  C<< <gwilliams@cpan.org> >> | 
| 168 |  |  |  |  |  |  |  | 
| 169 |  |  |  |  |  |  | =head1 COPYRIGHT | 
| 170 |  |  |  |  |  |  |  | 
| 171 |  |  |  |  |  |  | Copyright (c) 2014--2022 Gregory Todd Williams. This | 
| 172 |  |  |  |  |  |  | program is free software; you can redistribute it and/or modify it under | 
| 173 |  |  |  |  |  |  | the same terms as Perl itself. | 
| 174 |  |  |  |  |  |  |  | 
| 175 |  |  |  |  |  |  | =cut |