/usr/bin/rqsh is in librdf-query-perl 2.916-1.
This file is owned by root:root, with mode 0o755.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 | #!/usr/bin/env perl
use strict;
use warnings;
no warnings 'redefine';
use lib qw(../lib lib);
use Cwd;
use Benchmark;
use Scalar::Util qw(blessed);
use Data::Dumper;
use RDF::Query;
use RDF::Query::Error qw(:try);
use RDF::Query::Util;
use Term::ReadLine;
use Term::ReadKey;
use LWP::Simple;
use LWP::MediaTypes qw(add_type);
################################################################################
# Log::Log4perl::init( \q[
# log4perl.category.rdf.query.plan = DEBUG, Screen
# log4perl.appender.Screen = Log::Log4perl::Appender::Screen
# log4perl.appender.Screen.stderr = 0
# log4perl.appender.Screen.layout = Log::Log4perl::Layout::SimpleLayout
# ] );
################################################################################
add_type( 'application/rdf+xml' => qw(rdf xrdf rdfx) );
add_type( 'text/turtle' => qw(ttl) );
add_type( 'text/plain' => qw(nt) );
add_type( 'text/x-nquads' => qw(nq) );
add_type( 'text/json' => qw(json) );
add_type( 'text/html' => qw(html xhtml htm) );
$| = 1;
my $model;
if (scalar(@ARGV) and $ARGV[ $#ARGV ] =~ /.sqlite/) {
my $file = pop(@ARGV);
my $dsn = "DBI:SQLite:dbname=" . $file;
my $store = RDF::Trine::Store::DBI->new($model, $dsn, '', '');
$model = RDF::Trine::Model->new( $store );
} else {
$model = memory_model();
}
my %args = &RDF::Query::Util::cli_parse_args();
unless (exists $args{update}) {
$args{update} = 1;
}
$args{ base } = 'file://' . getcwd . '/';
my $NAMESPACES = $RDF::Query::Util::PREFIXES;
my $vb_format = 'table';
my $def_format = 'ntriples';
my $serializer = RDF::Trine::Serializer->new($def_format);
my %serializer = ($def_format => $serializer);
my $class = delete $args{ class } || 'RDF::Query';
my $term = Term::ReadLine->new('rqsh', \*STDIN, \*STDOUT);
print "rqsh v1.0, RDF::Query v${RDF::Query::VERSION}\n\n";
while ( defined ($_ = $term->readline('rqsh> ')) ) {
my $line = $_;
next unless (length($line));
handle_cmd( $line );
}
sub handle_cmd {
my $line = shift;
if ($line =~ /help/i) {
help();
} elsif ($line =~ /^set (prefix (\w+): <([^>]+)>)/i) {
my $query = RDF::Query->new( "$1 SELECT * WHERE {}" );
if ($query) {
$NAMESPACES .= "PREFIX $2: <$3>\n";
} else {
warn RDF::Query->error;
}
} elsif ($line =~ /^time (.*)/i) {
timethis( 1, sub {
handle_cmd( $1 );
} );
} elsif ($line =~ /^explain (.*)$/i) {
explain($model, $term, $1);
} elsif ($line =~ /^parse (.*)$/i) {
parse($model, $term, $1);
} elsif ($line =~ /^use (\w+)\s*;?\s*$/i) {
my $name = $1;
my $nmodel = model( $name );
if ($nmodel) {
$model = $nmodel;
}
} elsif ($line =~ /init/i) {
init( $model, $term, $line );
} elsif ($line =~ m/^results (table|srx)$/i) {
$vb_format = lc($1);
} elsif ($line =~ m/^serializer (\w+)$/i) {
if (exists($serializer{ $1 })) {
$serializer = $serializer{ $1 };
} else {
my $ser;
try {
$ser = RDF::Trine::Serializer->new( $1 );
} catch RDF::Trine::Error::SerializationError with {};
if ($ser) {
$serializer{ $1 } = $ser;
$serializer = $ser;
} else {
print "Unrecognized serializer name '$1'\n";
print "Valid serializers are:\n";
foreach my $name (RDF::Trine::Serializer->serializer_names) {
print " $name\n";
}
print "\n";
}
}
} elsif ($line =~ /debug/i) {
debug( $model, $term, $line );
} elsif ($line =~ /^execute <([^>]+)>$/) {
my $url = URI->new_abs( $1, $args{ base } );
my $query = get( $url );
query( $model, $term, $query );
} else {
query( $model, $term, $line );
}
}
sub help {
print <<"END";
Commands:
help Show this help information.
use [backend] Switch the storage backend (e.g. "use mysql").
init Initialize the storage backend (creating necessary indexes, etc.).
set prefix [ns]: [uri] Set a namespace for use in subsequent queries.
results (table|srx) Set the serializer used for tabular variable binding results.
serializer [format] Set the serializer used for RDF results (e.g. "serializer turtle").
debug Print all the quads in the storage backend.
parse [sparql] Print the parsed algebra for the SPARQL 1.1 query/update.
explain [sparql] Explain the execution plan for the SPARQL 1.1 query/update.
time [command] Time the execution of the command.
execute <URI> Execute the SPARQL update/query obtained by dereferencing URI.
SELECT ... Execute the SPARQL 1.1 query.
ASK ... Execute the SPARQL 1.1 query.
CONSTRUCT ... Execute the SPARQL 1.1 query.
DESCRIBE ... Execute the SPARQL 1.1 query.
INSERT ... Execute the SPARQL 1.1 update.
DELETE ... Execute the SPARQL 1.1 update.
LOAD <uri> Execute the SPARQL 1.1 update.
CLEAR ... Execute the SPARQL 1.1 update.
COPY ... Execute the SPARQL 1.1 update.
MOVE ... Execute the SPARQL 1.1 update.
END
}
sub init {
my $model = shift;
my $term = shift;
my $line = shift;
if (my $store = $model->_store) {
$store->init;
}
}
sub model {
my $name = shift;
my $sclass = RDF::Trine::Store->class_by_name( $name );
if ($sclass) {
if ($sclass eq 'RDF::Trine::Store::Memory') {
$model = RDF::Trine::Model->new( RDF::Trine::Store::Memory->new );
return;
} else {
if ($sclass->can('_config_meta')) {
my $meta = $sclass->_config_meta;
my $keys = $meta->{required_keys};
my $config = { storeclass => $sclass };
foreach my $k (@$keys) {
get_value( $term, $meta, $k, $config );
}
my $store = eval { $sclass->new_with_config( $config ) };
if ($store) {
my $m = RDF::Trine::Model->new( $store );
if ($m) {
return $m;
}
}
print "Failed to construct '$name'-backed model. $@\n";
return;
} else {
print "Cannot construct model from '$name' storage class.\n";
}
}
} else {
print "No storage class named '$name' found\n";
return;
}
}
sub explain {
my $model = shift;
my $term = shift;
my $sparql = shift;
my $psparql = join("\n", $NAMESPACES, $sparql);
my $query = $class->new( $psparql, \%args );
unless ($query) {
print "Error: " . RDF::Query->error . "\n";
return;
}
my ($plan, $ctx) = $query->prepare( $model );
print $plan->explain(' ', 0);
}
sub parse {
my $model = shift;
my $term = shift;
my $sparql = shift;
my $psparql = join("\n", $NAMESPACES, $sparql);
my $query = $class->new( $psparql, \%args );
unless ($query) {
print "Error: " . RDF::Query->error . "\n";
return;
}
my $pattern = $query->pattern;
print $pattern->sse . "\n";
}
sub query {
my $model = shift;
my $term = shift;
my $sparql = shift;
my $psparql;
if ($sparql =~ /^BASE <([^>]+)>/i) {
$sparql =~ s/^BASE <([^>]+)>/BASE <$1>\n$NAMESPACES/;
$psparql = $sparql;
} else {
$psparql = join("\n", $NAMESPACES, $sparql);
}
my $query = $class->new( $psparql, \%args );
unless ($query) {
print "Error: " . RDF::Query->error . "\n";
return;
}
$term->addhistory($sparql);
try {
my ($plan, $ctx) = $query->prepare($model);
my $iter = $query->execute_plan( $plan, $ctx );
my $count = -1;
if (blessed($iter)) {
if ($iter->isa('RDF::Trine::Iterator::Graph')) {
$serializer->serialize_iterator_to_file( $term->OUT, $iter );
} else {
if ($vb_format eq 'srx') {
print $iter->as_xml( 0 );
} else {
print $iter->as_string( 0, \$count );
}
}
}
if ($plan->is_update) {
my $size = $model->size;
print "$size statements\n";
} elsif ($count >= 0) {
print "$count results\n";
}
} catch RDF::Query::Error with {
my $e = shift;
print "Error: $e\n";
} otherwise {
warn "died: " . Dumper(\@_);
};
}
sub debug {
my $model = shift;
my $term = shift;
my $line = shift;
print "# model = $model\n";
if (my $store = $model->_store) {
print "# store = $store\n";
}
my $iter = $model->get_statements( undef, undef, undef, undef );
my @rows;
my @names = qw[subject predicate object context];
while (my $row = $iter->next) {
push(@rows, [map {$row->$_()->as_string} @names]);
}
my @rule = qw(- +);
my @headers = (\q"| ");
push(@headers, map { $_ => \q" | " } @names);
pop @headers;
push @headers => (\q" |");
my $table = Text::Table->new(@names);
$table->rule(@rule);
$table->body_rule(@rule);
$table->load(@rows);
print join('',
$table->rule(@rule),
$table->title,
$table->rule(@rule),
map({ $table->body($_) } 0 .. @rows),
$table->rule(@rule)
);
my $size = scalar(@rows);
print "$size statements\n";
}
sub get_value {
my $term = shift;
my $meta = shift;
my $k = shift;
my $config = shift;
if (my $v = $config->{$k}) {
return;
} elsif (defined($meta->{fields}{$k}{'value'})) {
$config->{ $k } = $meta->{fields}{$k}{'value'};
} elsif (defined($meta->{fields}{$k}{'template'})) {
my $template = $meta->{fields}{$k}{'template'};
my @subkeys = ($template =~ m/\[%(\w+)%\]/g);
foreach my $sk (@subkeys) {
get_value( $term, $meta, $sk, $config );
}
while ($template =~ m/\[%(\w+)%\]/) {
my $key = $1;
my $v = $config->{$key};
$template =~ s/\[%$key%\]/$v/e;
}
$config->{ $k } = $template;
} else {
my $desc = $meta->{fields}{$k}{description};
my $type = $meta->{fields}{$k}{type};
my $value;
if ($type eq 'password') {
print "$desc: ";
ReadMode('noecho');
$value = ReadLine(0, $term->IN);
chomp($value);
} elsif ($type eq 'filename') {
my $attribs = $term->Attribs;
local($attribs->{completion_entry_function}) = $attribs->{filename_completion_function};
$value = $term->readline("$desc: ");
} else {
$value = $term->readline("$desc: ")
}
$config->{ $k } = $value;
}
}
{ my $memory_model;
sub memory_model {
if (defined($memory_model)) {
return $memory_model;
} else {
my $model = RDF::Trine::Model->temporary_model;
$memory_model = $model;
return $model;
}
}}
__END__
=head1 NAME
rqsh - SPARQL database shell
=head1 DESCRIPTION
rqsh provides a command-line interface to the SPARQL 1.1 implementation of
RDF::Query. It defaults to using an in-memory database, but can be configured
to use any database implemented as an L<RDF::Trine::Store>.
=head1 COMMANDS
=over 4
=item help
Show help information on available commands.
=item use [backend]
Switch the storage backend (e.g. "use mysql").
You will be prompted to enter any necessary connection/configuration data.
=item init
Initialize the storage backend (creating necessary indexes, etc.).
=item set prefix [ns]: [uri]
Set a namespace for use in subsequent queries.
=item results (table|srx)
Set the serializer used for tabular variable binding results.
=item serializer [format]
Set the serializer used for RDF results (e.g. "serializer turtle").
=item debug
Print all the quads in the storage backend.
=item parse [sparql]
Print the parsed algebra for the SPARQL 1.1 query/update.
=item explain [sparql]
Print the execution plan for the SPARQL 1.1 query/update.
=item time [command]
Time the execution of the command.
=item execute <URI>
Execute the SPARQL update/query obtained by dereferencing URI.
=item SELECT ...
=item ASK ...
=item CONSTRUCT ...
=item DESCRIBE ...
Execute the SPARQL 1.1 query.
=item INSERT ...
=item DELETE ...
=item LOAD <uri>
=item CLEAR ...
=item COPY ...
=item MOVE ...
Execute the SPARQL 1.1 update.
=back
=cut
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