/usr/share/perl5/App/perlrdf/Command/Query.pm is in libapp-perlrdf-command-query-perl 0.004-2.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 | package App::perlrdf::Command::Query;
use 5.010;
use strict;
use warnings;
use utf8;
BEGIN {
$App::perlrdf::Command::Query::AUTHORITY = 'cpan:TOBYINK';
$App::perlrdf::Command::Query::VERSION = '0.004';
}
use App::perlrdf -command;
use namespace::clean;
use constant abstract => q (query stores, files or remote endpoints with SPARQL);
use constant command_names => qw( query sparql q );
use constant description => <<'DESCRIPTION';
Use SPARQL to query:
* an RDF::Trine::Store;
* a remote SPARQL Protocol (1.0/1.1) endpoint; or
* one or more input files;
But not a combination of the above.
DESCRIPTION
use constant opt_spec => (
__PACKAGE__->store_opt_spec,
[]=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>,
[ 'input|i=s@', 'Input filename or URL' ],
[ 'input-spec|I=s@', 'Input file specification' ],
[ 'input-format|p=s', 'Input format (mnemonic: parse)' ],
[ 'input-base|b=s', 'Input base URI' ],
[ 'graph|g=s', 'Graph URI for input' ],
[ 'autograph|G', 'Generate graph URI based on input URI' ],
[]=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>,
[ 'endpoint=s', 'Remote SPARQL Protocol endpoint' ],
[ 'query_method=s', 'Query method (GET/POST/etc)' ],
[]=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>,
[ 'execute|e=s', 'Query to execute' ],
[ 'sparql-file|f=s', 'File containing query to execute' ],
[]=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>=>
[ 'output|o=s@', 'Output filename or URL' ],
[ 'output-spec|O=s@', 'Output file specification' ],
[ 'output-format|s=s', 'Output format (mnemonic: serialise)' ],
);
sub validate_args
{
my ($self, $opt, $arg) = @_;
my %exclusions = (
execute => ['sparql_file'],
endpoint => [
qw[ store dbi sqlite username password host port dbname database ],
qw[ input input_spec input_format input_base ],
],
query_method => [
qw[ store dbi sqlite username password host port dbname database ],
qw[ input input_spec input_format input_base ],
],
map { ; $_ => [
qw[ store dbi sqlite username password host port dbname database ],
qw[ endpoint ],
] } qw( input input_spec input_format input_base )
);
foreach my $k (keys %exclusions)
{
next unless exists $opt->{$k};
foreach my $e (@{ $exclusions{$k} })
{
next unless exists $opt->{$e};
$self->usage_error("Must not provide both '$k' and '$e' options.");
}
}
}
sub _sparql
{
require App::perlrdf::FileSpec::InputFile;
my ($self, $opt, $arg) = @_;
# SPARQL provided on command line
#
return $opt->{execute}
if $opt->{execute};
# SPARQL from input file
#
App::perlrdf::FileSpec::InputFile::
-> new_from_filespec(
($opt->{sparql_file} // shift @$arg),
'SPARQL',
)
-> content;
}
sub _model
{
require App::perlrdf::FileSpec::InputRDF;
my ($self, $opt, $arg) = @_;
if (grep { exists $opt->{$_} } qw[ store dbi sqlite dbname database ])
{
return RDF::Trine::Model->new( $self->get_store($opt) );
}
my $model = RDF::Trine::Model->new;
my @inputs = $self->get_filespecs(
'App::perlrdf::FileSpec::InputRDF',
input => $opt,
);
push @inputs, map {
App::perlrdf::FileSpec::InputRDF::->new_from_filespec(
$_,
$opt->{input_format},
$opt->{input_base},
)
} @$arg;
push @inputs,
App::perlrdf::FileSpec::InputRDF::->new_from_filespec(
'-',
$opt->{input_format},
$opt->{input_base},
)
unless @inputs;
for (@inputs)
{
printf STDERR "Loading %s\n", $_->uri;
my %params = ();
if ($opt->{autograph})
{ $params{graph} = $_->uri }
elsif ($opt->{graph})
{ $params{graph} = $opt->{graph} }
eval {
local $@ = undef;
$_->parse_into_model($model, %params);
1;
} or warn "$@\n";
}
return $model;
}
sub _outputs
{
require App::perlrdf::FileSpec::OutputRDF;
require App::perlrdf::FileSpec::OutputBindings;
my ($self, $opt, $arg, $class) = @_;
my @outputs = $self->get_filespecs(
$class,
output => $opt,
);
push @outputs,
$class->new_from_filespec(
'-',
$opt->{output_format}||'text',
undef,
)
unless @outputs;
return @outputs;
}
sub _process_sparql
{
require RDF::Query;
require RDF::Query::Client;
my ($self, $opt, $arg, $sparql, $model) = @_;
my $qclass = ref $model ? 'RDF::Query' : 'RDF::Query::Client';
my @params = ref $model ? () : ({
QueryMethod => ($opt->{query_method} // $ENV{PERLRDF_QUERY_METHOD} // "POST"),
});
my $query = $qclass->new($sparql) or die RDF::Query->error;
if ($query->can('useragent')) {
$query->useragent->max_redirect(5);
$query->useragent->agent(
sprintf(
'%s/%s (%s) %s',
ref($self),
$self->VERSION,
$self->AUTHORITY,
$query->useragent->agent,
),
);
}
my $result = $query->execute($model, @params) or do {
if (($ENV{PERLRDF_QUERY_DEBUG}//'') and $query->can('http_response')) {
warn $query->http_response->request->as_string;
for my $redir ($query->http_response->redirects) {
warn $redir->status_line;
}
warn $query->http_response->as_string;
}
die $query->error;
};
if ($result->is_graph)
{
my $m = RDF::Trine::Model->new;
$m->add_iterator($m);
my (@outputs) = $self->_outputs(
$opt,
$arg,
'App::perlrdf::FileSpec::OutputRDF',
);
foreach my $out (@outputs)
{
$out->serialize_model($m);
$out->handle->close;
}
}
if ($result->is_bindings)
{
if (($ENV{PERLRDF_QUERY_DEBUG}//'') and $query->can('http_response')) {
warn $query->http_response->as_string;
}
my $mat = $result->materialize;
my (@outputs) = $self->_outputs(
$opt,
$arg,
'App::perlrdf::FileSpec::OutputBindings',
);
foreach my $out (@outputs)
{
$out->serialize_iterator($mat);
$mat->reset;
}
}
}
sub execute
{
require RDF::Trine;
my ($self, $opt, $arg) = @_;
my $sparql = $self->_sparql($opt, $arg);
if (exists $opt->{endpoint})
{
return $self->_process_sparql($opt, $arg, $sparql, $opt->{endpoint});
}
my $model = $self->_model($opt, $arg);
$self->_process_sparql($opt, $arg, $sparql, $model);
}
1;
__END__
=head1 NAME
App::perlrdf::Command::Query - SPARQL extension for App-perlrdf
=head1 SYNOPSIS
$ perlrdf query -e 'SELECT * WHERE { ?s ?p ?o }' -i data.rdf
$ perlrdf query -e 'SELECT * WHERE { ?s ?p ?o }' -Q store.sqlite
=head1 DESCRIPTION
This module adds query abilities to the C<perlrdf> command-line client.
=head1 BUGS
Please report any bugs to
L<http://rt.cpan.org/Dist/Display.html?Queue=App-perlrdf-Command-Query>.
=head1 ENVIRONMENT
Set C<PERLRDF_QUERY_METHOD> to "GET" or "POST" specify a query method.
=head1 SEE ALSO
L<App::perlrdf>, L<RDF::Query>, L<RDF::Query::Client>, L<Spreadsheet::Wright>.
The L<rqsh> tool that comes with RDF::Query.
=head1 AUTHOR
Toby Inkster E<lt>tobyink@cpan.orgE<gt>.
=head1 COPYRIGHT AND LICENCE
This software is copyright (c) 2012 by Toby Inkster.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=head1 DISCLAIMER OF WARRANTIES
THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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