Open-ILS/src/perlmods/OpenILS/Application/Storage/WORM.pm

   1 package OpenILS::Application::Storage::WORM;
   2 use base qw/OpenILS::Application::Storage/;
   3 use strict; use warnings;
   4
   5 use OpenSRF::EX qw/:try/;
   6
   7 use OpenSRF::Utils::Logger qw/:level/;
   8 my $log = 'OpenSRF::Utils::Logger';
   9
  10 use OpenILS::Utils::FlatXML;
  11 use OpenILS::Utils::Fieldmapper;
  12 use JSON;
  13
  14 use XML::LibXML;
  15 use XML::LibXSLT;
  16 use Time::HiRes qw(time);
  17
  18 my $xml_util    = OpenILS::Utils::FlatXML->new();
  19
  20 my $parser              = XML::LibXML->new();
  21 my $xslt                        = XML::LibXSLT->new();
  22 my $mods_sheet;
  23
  24 use open qw/:utf8/;
  25
  26 my $xpathset = {};
  27
  28 sub child_init {
  29         my $meth = __PACKAGE__->method_lookup('open-ils.storage.direct.config.metabib_field.retrieve.all');
  30         for my $f ($meth->run) {
  31                 $xpathset->{ $f->field_class }->{ $f->name }->{xpath} = $f->xpath;
  32                 $xpathset->{ $f->field_class }->{ $f->name }->{id} = $f->id;
  33                 $log->debug("Loaded XPath from DB: ".$f->field_class." => ".$f->name." : ".$f->xpath, DEBUG);
  34         }
  35 }
  36
  37 # --------------------------------------------------------------------------------
  38 # Fingerprinting
  39
  40 my @fp_mods_xpath = (
  41         '//mods:mods/mods:typeOfResource[text()="text"]' => [
  42                         title   => {
  43                                         xpath   => [
  44                                                         '//mods:mods/mods:titleInfo[mods:title and (@type="uniform")]',
  45                                                         '//mods:mods/mods:titleInfo[mods:title and (@type="translated")]',
  46                                                         '//mods:mods/mods:titleInfo[mods:title and (@type="alternative")]',
  47                                                         '//mods:mods/mods:titleInfo[mods:title and not(@type)]',
  48                                         ],
  49                                         fixup   => '
  50                                                         do {
  51                                                                 $text = lc($text);
  52                                                                 $text =~ s/\s+/ /sgo;
  53                                                                 $text =~ s/^\s*(.+)\s*$/$1/sgo;
  54                                                                 $text =~ s/\b(?:the|an?)\b//sgo;
  55                                                                 $text =~ s/\[.[^\]]+\]//sgo;
  56                                                                 $text =~ s/\s*[;\/\.]*$//sgo;
  57                                                                 $text =~ s/\pM+//gso;
  58                                                         };
  59                                         ',
  60                         },
  61                         author  => {
  62                                         xpath   => [
  63                                                         '//mods:mods/mods:name[mods:role/mods:text/text()="creator" and @type="personal"]/mods:namePart',
  64                                                         '//mods:mods/mods:name[mods:role/mods:text/text()="creator"]/mods:namePart',
  65                                         ],
  66                                         fixup   => '
  67                                                         do {
  68                                                                 $text = lc($text);
  69                                                                 $text =~ s/\s+/ /sgo;
  70                                                                 $text =~ s/^\s*(.+)\s*$/$1/sgo;
  71                                                                 $text =~ s/,?\s+.*$//sgo;
  72                                                                 $text =~ s/\pM+//gso;
  73                                                         };
  74                                         ',
  75                         },
  76         ],
  77
  78         '//mods:mods/mods:relatedItem[@type!="host" and @type!="series"]' => [
  79                         title   => {
  80                                         xpath   => [
  81                                                         '//mods:mods/mods:relatedItem/mods:titleInfo[mods:title and (@type="uniform")]',
  82                                                         '//mods:mods/mods:relatedItem/mods:titleInfo[mods:title and (@type="translated")]',
  83                                                         '//mods:mods/mods:relatedItem/mods:titleInfo[mods:title and (@type="alternative")]',
  84                                                         '//mods:mods/mods:relatedItem/mods:titleInfo[mods:title and not(@type)]',
  85                                                         '//mods:mods/mods:titleInfo[mods:title and (@type="uniform")]',
  86                                                         '//mods:mods/mods:titleInfo[mods:title and (@type="translated")]',
  87                                                         '//mods:mods/mods:titleInfo[mods:title and (@type="alternative")]',
  88                                                         '//mods:mods/mods:titleInfo[mods:title and not(@type)]',
  89                                         ],
  90                                         fixup   => '
  91                                                         do {
  92                                                                 $text = lc($text);
  93                                                                 $text =~ s/\s+/ /sgo;
  94                                                                 $text =~ s/^\s*(.+)\s*$/$1/sgo;
  95                                                                 $text =~ s/\b(?:the|an?)\b//sgo;
  96                                                                 $text =~ s/\[.[^\]]+\]//sgo;
  97                                                                 $text =~ s/\s*[;\/\.]*$//sgo;
  98                                                                 $text =~ s/\pM+//gso;
  99                                                         };
 100                                         ',
 101                         },
 102                         author  => {
 103                                         xpath   => [
 104                                                         '//mods:mods/mods:relatedItem/mods:name[mods:role/mods:text/text()="creator" and @type="personal"]/mods:namePart',
 105                                                         '//mods:mods/mods:relatedItem/mods:name[mods:role/mods:text/text()="creator"]/mods:namePart',
 106                                                         '//mods:mods/mods:name[mods:role/mods:text/text()="creator" and @type="personal"]/mods:namePart',
 107                                                         '//mods:mods/mods:name[mods:role/mods:text/text()="creator"]/mods:namePart',
 108                                         ],
 109                                         fixup   => '
 110                                                         do {
 111                                                                 $text = lc($text);
 112                                                                 $text =~ s/\s+/ /sgo;
 113                                                                 $text =~ s/^\s*(.+)\s*$/$1/sgo;
 114                                                                 $text =~ s/,?\s+.*$//sgo;
 115                                                                 $text =~ s/\pM+//gso;
 116                                                         };
 117                                         ',
 118                         },
 119         ],
 120
 121 );
 122
 123 push @fp_mods_xpath, '//mods:mods/mods:titleInfo' => $fp_mods_xpath[1];
 124
 125 sub fingerprint_mods {
 126         my $mods = shift;
 127
 128         my $fp_string = '';
 129
 130         my $match_index = 0;
 131         my $block_index = 1;
 132         while ( my $match_xpath = $fp_mods_xpath[$match_index] ) {
 133                 if ( my @nodes = $mods->findnodes( $match_xpath ) ) {
 134
 135                         my $block_name_index = 0;
 136                         my $block_value_index = 1;
 137                         my $block = $fp_mods_xpath[$block_index];
 138                         while ( my $part = $$block[$block_value_index] ) {
 139                                 my $text;
 140                                 for my $xpath ( @{ $part->{xpath} } ) {
 141                                         $text = $mods->findvalue( $xpath );
 142                                         last if ($text);
 143                                 }
 144
 145                                 $log->debug("Found fingerprint text using $$block[$block_name_index] : [$text]", DEBUG);
 146
 147                                 if ($text) {
 148                                         eval $$part{fixup};
 149                                         $fp_string .= $text;
 150                                 }
 151
 152                                 $block_name_index += 2;
 153                                 $block_value_index += 2;
 154                         }
 155                 }
 156                 if ($fp_string) {
 157                         $fp_string =~ s/\W+//gso;
 158                         $log->debug("Fingerprint is [$fp_string]", INFO);;
 159                         return $fp_string;
 160                 }
 161
 162                 $match_index += 2;
 163                 $block_index += 2;
 164         }
 165         return undef;
 166 }
 167
 168
 169
 170 # --------------------------------------------------------------------------------
 171
 172 my $in_xact;
 173 my $begin;
 174 my $commit;
 175 my $rollback;
 176 my $lookup;
 177 my $update_entry;
 178 my $mr_lookup;
 179 my $mr_update;
 180 my $mr_create;
 181 my $create_source_map;
 182 my $sm_lookup;
 183 my $rm_old_rd;
 184 my $rm_old_sm;
 185 my $rm_old_fr;
 186 my $rm_old_tr;
 187 my $rm_old_ar;
 188 my $rm_old_sr;
 189 my $rm_old_kr;
 190 my $rm_old_ser;
 191
 192 my $fr_create;
 193 my $rd_create;
 194 my $create = {};
 195
 196 my %descriptor_code = (
 197         item_type => 'substr($ldr,6,1)',
 198         item_form => '(substr($ldr,6,1) =~ /^(?:f|g|i|m|o|p|r)$/) ? substr($oo8,29,1) : substr($oo8,23,1)',
 199         bib_level => 'substr($ldr,7,1)',
 200         control_type => 'substr($ldr,8,1)',
 201         char_encoding => 'substr($ldr,9,1)',
 202         enc_level => 'substr($ldr,17,1)',
 203         cat_form => 'substr($ldr,18,1)',
 204         pub_status => 'substr($ldr,5,1)',
 205         item_lang => 'substr($oo8,35,3)',
 206         #lit_form => '(substr($ldr,6,1) =~ /^(?:f|g|i|m|o|p|r)$/) ? substr($oo8,33,1) : "0"',
 207         audience => 'substr($oo8,22,1)',
 208 );
 209
 210 sub wormize {
 211
 212         my $self = shift;
 213         my $client = shift;
 214         my @docids = @_;
 215
 216         my $no_map = 0;
 217         if ($self->api_name =~ /no_map/o) {
 218                 $no_map = 1;
 219         }
 220
 221         $in_xact = $self->method_lookup( 'open-ils.storage.transaction.current')
 222                 unless ($in_xact);
 223         $begin = $self->method_lookup( 'open-ils.storage.transaction.begin')
 224                 unless ($begin);
 225         $commit = $self->method_lookup( 'open-ils.storage.transaction.commit')
 226                 unless ($commit);
 227         $rollback = $self->method_lookup( 'open-ils.storage.transaction.rollback')
 228                 unless ($rollback);
 229         $sm_lookup = $self->method_lookup('open-ils.storage.direct.metabib.metarecord_source_map.search.source')
 230                 unless ($sm_lookup);
 231         $mr_lookup = $self->method_lookup('open-ils.storage.direct.metabib.metarecord.search.fingerprint')
 232                 unless ($mr_lookup);
 233         $mr_update = $self->method_lookup('open-ils.storage.direct.metabib.metarecord.batch.update')
 234                 unless ($mr_update);
 235         $mr_create = $self->method_lookup('open-ils.storage.direct.metabib.metarecord.create')
 236                 unless ($mr_create);
 237         $create_source_map = $self->method_lookup('open-ils.storage.direct.metabib.metarecord_source_map.batch.create')
 238                 unless ($create_source_map);
 239         $lookup = $self->method_lookup('open-ils.storage.direct.biblio.record_entry.batch.retrieve')
 240                 unless ($lookup);
 241         $update_entry = $self->method_lookup('open-ils.storage.direct.biblio.record_entry.batch.update')
 242                 unless ($update_entry);
 243         $rm_old_sm = $self->method_lookup( 'open-ils.storage.direct.metabib.metarecord_source_map.mass_delete')
 244                 unless ($rm_old_sm);
 245         $rm_old_rd = $self->method_lookup( 'open-ils.storage.direct.metabib.record_descriptor.mass_delete')
 246                 unless ($rm_old_rd);
 247         $rm_old_fr = $self->method_lookup( 'open-ils.storage.direct.metabib.full_rec.mass_delete')
 248                 unless ($rm_old_fr);
 249         $rm_old_tr = $self->method_lookup( 'open-ils.storage.direct.metabib.title_field_entry.mass_delete')
 250                 unless ($rm_old_tr);
 251         $rm_old_ar = $self->method_lookup( 'open-ils.storage.direct.metabib.author_field_entry.mass_delete')
 252                 unless ($rm_old_ar);
 253         $rm_old_sr = $self->method_lookup( 'open-ils.storage.direct.metabib.subject_field_entry.mass_delete')
 254                 unless ($rm_old_sr);
 255         $rm_old_kr = $self->method_lookup( 'open-ils.storage.direct.metabib.keyword_field_entry.mass_delete')
 256                 unless ($rm_old_kr);
 257         $rm_old_ser = $self->method_lookup( 'open-ils.storage.direct.metabib.series_field_entry.mass_delete')
 258                 unless ($rm_old_ser);
 259         $rd_create = $self->method_lookup( 'open-ils.storage.direct.metabib.record_descriptor.batch.create')
 260                 unless ($rd_create);
 261         $fr_create = $self->method_lookup( 'open-ils.storage.direct.metabib.full_rec.batch.create')
 262                 unless ($fr_create);
 263         $$create{title} = $self->method_lookup( 'open-ils.storage.direct.metabib.title_field_entry.batch.create')
 264                 unless ($$create{title});
 265         $$create{author} = $self->method_lookup( 'open-ils.storage.direct.metabib.author_field_entry.batch.create')
 266                 unless ($$create{author});
 267         $$create{subject} = $self->method_lookup( 'open-ils.storage.direct.metabib.subject_field_entry.batch.create')
 268                 unless ($$create{subject});
 269         $$create{keyword} = $self->method_lookup( 'open-ils.storage.direct.metabib.keyword_field_entry.batch.create')
 270                 unless ($$create{keyword});
 271         $$create{series} = $self->method_lookup( 'open-ils.storage.direct.metabib.series_field_entry.batch.create')
 272                 unless ($$create{series});
 273
 274
 275         my ($outer_xact) = $in_xact->run;
 276         try {
 277                 unless ($outer_xact) {
 278                         $log->debug("WoRM isn't inside a transaction, starting one now.", INFO);
 279                         my ($r) = $begin->run($client);
 280                         unless (defined $r and $r) {
 281                                 $rollback->run;
 282                                 throw OpenSRF::EX::PANIC ("Couldn't BEGIN transaction!")
 283                         }
 284                 }
 285         } catch Error with {
 286                 throw OpenSRF::EX::PANIC ("WoRM Couldn't BEGIN transaction!")
 287         };
 288
 289         my @source_maps;
 290         my @entry_list;
 291         my @mr_list;
 292         my @rd_list;
 293         my @ns_list;
 294         my @mods_data;
 295         my $ret = 0;
 296         for my $entry ( $lookup->run(@docids) ) {
 297                 # step -1: grab the doc from storage
 298                 next unless ($entry);
 299
 300                 if(!$mods_sheet) {
 301                         my $xslt_doc = $parser->parse_file(
 302                                 OpenSRF::Utils::SettingsClient->new->config_value(dirs => 'xsl') .  "/MARC21slim2MODS.xsl");
 303                         $mods_sheet = $xslt->parse_stylesheet( $xslt_doc );
 304                 }
 305
 306                 my $xml = $entry->marc;
 307                 my $docid = $entry->id;
 308                 my $marcdoc = $parser->parse_string($xml);
 309                 my $modsdoc = $mods_sheet->transform($marcdoc);
 310
 311                 my $mods = $modsdoc->documentElement;
 312                 $mods->setNamespace( "http://www.loc.gov/mods/", "mods", 1 );
 313
 314                 $entry->fingerprint( fingerprint_mods( $mods ) );
 315                 push @entry_list, $entry;
 316
 317                 $log->debug("Fingerprint for Record Entry ".$docid." is [".$entry->fingerprint."]", INFO);
 318
 319                 unless ($no_map) {
 320                         my ($mr) = $mr_lookup->run( $entry->fingerprint );
 321                         if (!$mr || !@$mr) {
 322                                 $log->debug("No metarecord found for fingerprint [".$entry->fingerprint."]; Creating a new one", INFO);
 323                                 $mr = new Fieldmapper::metabib::metarecord;
 324                                 $mr->fingerprint( $entry->fingerprint );
 325                                 $mr->master_record( $entry->id );
 326                                 my ($new_mr) = $mr_create->run($mr);
 327                                 $mr->id($new_mr);
 328                                 unless (defined $mr) {
 329                                         throw OpenSRF::EX::PANIC ("Couldn't run open-ils.storage.direct.metabib.metarecord.create!")
 330                                 }
 331                         } else {
 332                                 $log->debug("Retrieved metarecord, id is ".$mr->id, INFO);
 333                                 $mr->mods('');
 334                                 push @mr_list, $mr;
 335                         }
 336
 337                         my $sm = new Fieldmapper::metabib::metarecord_source_map;
 338                         $sm->metarecord( $mr->id );
 339                         $sm->source( $entry->id );
 340                         push @source_maps, $sm;
 341                 }
 342
 343                 my $ldr = $marcdoc->documentElement->getChildrenByTagName('leader')->pop->textContent;
 344                 my $oo8 = $marcdoc->documentElement->findvalue('//*[local-name()="controlfield" and @tag="008"]');
 345
 346                 my $rd_obj = Fieldmapper::metabib::record_descriptor->new;
 347                 for my $rd_field ( keys %descriptor_code ) {
 348                         $rd_obj->$rd_field( eval "$descriptor_code{$rd_field};" );
 349                 }
 350                 $rd_obj->record( $docid );
 351                 push @rd_list, $rd_obj;
 352
 353                 push @mods_data, { $docid => $self->modsdoc_to_values( $mods ) };
 354
 355                 # step 2: build the KOHA rows
 356                 my @tmp_list = _marcxml_to_full_rows( $marcdoc );
 357                 $_->record( $docid ) for (@tmp_list);
 358                 push @ns_list, @tmp_list;
 359
 360                 $ret++;
 361
 362                 last unless ($self->api_name =~ /batch$/o);
 363         }
 364
 365         $rm_old_rd->run( { record => \@docids } );
 366         $rm_old_fr->run( { record => \@docids } );
 367         $rm_old_sm->run( { source => \@docids } ) unless ($no_map);
 368         $rm_old_tr->run( { source => \@docids } );
 369         $rm_old_ar->run( { source => \@docids } );
 370         $rm_old_sr->run( { source => \@docids } );
 371         $rm_old_kr->run( { source => \@docids } );
 372         $rm_old_ser->run( { source => \@docids } );
 373
 374         unless ($no_map) {
 375                 my ($sm) = $create_source_map->run(@source_maps);
 376                 unless (defined $sm) {
 377                         throw OpenSRF::EX::PANIC ("Couldn't run open-ils.storage.direct.metabib.metarecord_source_map.batch.create!")
 378                 }
 379                 my ($mr) = $mr_update->run(@mr_list);
 380                 unless (defined $mr) {
 381                         throw OpenSRF::EX::PANIC ("Couldn't run open-ils.storage.direct.metabib.metarecord.batch.update!")
 382                 }
 383         }
 384
 385         my ($re) = $update_entry->run(@entry_list);
 386         unless (defined $re) {
 387                 throw OpenSRF::EX::PANIC ("Couldn't run open-ils.storage.direct.biblio.record_entry.batch.update!")
 388         }
 389
 390         my ($rd) = $rd_create->run(@rd_list);
 391         unless (defined $rd) {
 392                 throw OpenSRF::EX::PANIC ("Couldn't run open-ils.storage.direct.metabib.record_descriptor.batch.create!")
 393         }
 394
 395         my ($fr) = $fr_create->run(@ns_list);
 396         unless (defined $fr) {
 397                 throw OpenSRF::EX::PANIC ("Couldn't run open-ils.storage.direct.metabib.full_rec.batch.create!")
 398         }
 399
 400         # step 5: insert the new metadata
 401         for my $class ( qw/title author subject keyword series/ ) {
 402                 my @md_list = ();
 403                 for my $doc ( @mods_data ) {
 404                         my ($did) = keys %$doc;
 405                         my ($data) = values %$doc;
 406
 407                         my $fm_constructor = "Fieldmapper::metabib::${class}_field_entry";
 408                         for my $row ( keys %{ $$data{$class} } ) {
 409                                 next unless (exists $$data{$class}{$row});
 410                                 next unless ($$data{$class}{$row}{value});
 411                                 my $fm_obj = $fm_constructor->new;
 412                                 $fm_obj->value( $$data{$class}{$row}{value} );
 413                                 $fm_obj->field( $$data{$class}{$row}{field_id} );
 414                                 $fm_obj->source( $did );
 415                                 $log->debug("$class entry: ".$fm_obj->source." => ".$fm_obj->field." : ".$fm_obj->value, DEBUG);
 416
 417                                 push @md_list, $fm_obj;
 418                         }
 419                 }
 420
 421                 my ($cr) = $$create{$class}->run(@md_list);
 422                 unless (defined $cr) {
 423                         throw OpenSRF::EX::PANIC ("Couldn't run open-ils.storage.direct.metabib.${class}_field_entry.batch.create!")
 424                 }
 425         }
 426
 427         unless ($outer_xact) {
 428                 $log->debug("Commiting transaction started by the WoRM.", INFO);
 429                 my ($c) = $commit->run;
 430                 unless (defined $c and $c) {
 431                         $rollback->run;
 432                         throw OpenSRF::EX::PANIC ("Couldn't COMMIT changes!")
 433                 }
 434         }
 435
 436         return $ret;
 437 }
 438 __PACKAGE__->register_method(
 439         api_name        => "open-ils.worm.wormize",
 440         method          => "wormize",
 441         api_level       => 1,
 442         argc            => 1,
 443 );
 444 __PACKAGE__->register_method(
 445         api_name        => "open-ils.worm.wormize.no_map",
 446         method          => "wormize",
 447         api_level       => 1,
 448         argc            => 1,
 449 );
 450 __PACKAGE__->register_method(
 451         api_name        => "open-ils.worm.wormize.batch",
 452         method          => "wormize",
 453         api_level       => 1,
 454         argc            => 1,
 455 );
 456 __PACKAGE__->register_method(
 457         api_name        => "open-ils.worm.wormize.no_map.batch",
 458         method          => "wormize",
 459         api_level       => 1,
 460         argc            => 1,
 461 );
 462
 463
 464 # --------------------------------------------------------------------------------
 465
 466
 467 sub _marcxml_to_full_rows {
 468
 469         my $marcxml = shift;
 470
 471         my @ns_list;
 472
 473         my $root = $marcxml->documentElement;
 474
 475         for my $tagline ( @{$root->getChildrenByTagName("leader")} ) {
 476                 next unless $tagline;
 477
 478                 my $ns = new Fieldmapper::metabib::full_rec;
 479
 480                 $ns->tag( 'LDR' );
 481                 my $val = $tagline->textContent;
 482                 $val =~ s/(\pM)//gso;
 483                 $ns->value( $val );
 484
 485                 push @ns_list, $ns;
 486         }
 487
 488         for my $tagline ( @{$root->getChildrenByTagName("controlfield")} ) {
 489                 next unless $tagline;
 490
 491                 my $ns = new Fieldmapper::metabib::full_rec;
 492
 493                 $ns->tag( $tagline->getAttribute( "tag" ) );
 494                 my $val = $tagline->textContent;
 495                 $val =~ s/(\pM)//gso;
 496                 $ns->value( $val );
 497
 498                 push @ns_list, $ns;
 499         }
 500
 501         for my $tagline ( @{$root->getChildrenByTagName("datafield")} ) {
 502                 next unless $tagline;
 503
 504                 my $tag = $tagline->getAttribute( "tag" );
 505                 my $ind1 = $tagline->getAttribute( "ind1" );
 506                 my $ind2 = $tagline->getAttribute( "ind2" );
 507
 508                 for my $data ( $tagline->childNodes ) {
 509                         next unless $data;
 510
 511                         my $ns = new Fieldmapper::metabib::full_rec;
 512
 513                         $ns->tag( $tag );
 514                         $ns->ind1( $ind1 );
 515                         $ns->ind2( $ind2 );
 516                         $ns->subfield( $data->getAttribute( "code" ) );
 517                         my $val = $data->textContent;
 518                         $val =~ s/(\pM)//gso;
 519                         $ns->value( lc($val) );
 520
 521                         push @ns_list, $ns;
 522                 }
 523         }
 524         return @ns_list;
 525 }
 526
 527 sub _get_field_value {
 528
 529         my( $root, $xpath ) = @_;
 530
 531         my $string = "";
 532
 533         # grab the set of matching nodes
 534         my @nodes = $root->findnodes( $xpath );
 535         for my $value (@nodes) {
 536
 537                 # grab all children of the node
 538                 my @children = $value->childNodes();
 539                 for my $child (@children) {
 540
 541                         # add the childs content to the growing buffer
 542                         my $content = quotemeta($child->textContent);
 543                         next if ($string =~ /$content/);  # uniquify the values
 544                         $string .= $child->textContent . " ";
 545                 }
 546                 if( ! @children ) {
 547                         $string .= $value->textContent . " ";
 548                 }
 549         }
 550         $string =~ s/(\pM)//gso;
 551         return lc($string);
 552 }
 553
 554
 555 sub modsdoc_to_values {
 556         my( $self, $mods ) = @_;
 557         my $data = {};
 558         for my $class (keys %$xpathset) {
 559                 $data->{$class} = {};
 560                 for my $type (keys %{$xpathset->{$class}}) {
 561                         $data->{$class}->{$type} = {};
 562                         $data->{$class}->{$type}->{value} = _get_field_value( $mods, $xpathset->{$class}->{$type}->{xpath} );
 563                         $data->{$class}->{$type}->{field_id} = $xpathset->{$class}->{$type}->{id};
 564                 }
 565         }
 566         return $data;
 567 }
 568
 569
 570 1;
 571
 572