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| 1 | <?php |
| 2 | /** |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License as published by |
| 5 | * the Free Software Foundation; either version 2 of the License, or |
| 6 | * (at your option) any later version. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public License along |
| 14 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 16 | * http://www.gnu.org/copyleft/gpl.html |
| 17 | * |
| 18 | */ |
| 19 | |
| 20 | use MediaWiki\Category\CategoriesRdf; |
| 21 | use MediaWiki\MainConfigNames; |
| 22 | use MediaWiki\Utils\MWTimestamp; |
| 23 | use Wikimedia\Purtle\RdfWriter; |
| 24 | use Wikimedia\Purtle\TurtleRdfWriter; |
| 25 | use Wikimedia\Rdbms\IReadableDatabase; |
| 26 | |
| 27 | require_once __DIR__ . '/Maintenance.php'; |
| 28 | |
| 29 | /** |
| 30 | * Maintenance script to provide RDF representation of the recent changes in category tree. |
| 31 | * |
| 32 | * @ingroup Maintenance |
| 33 | * @since 1.30 |
| 34 | */ |
| 35 | class CategoryChangesAsRdf extends Maintenance { |
| 36 | /** |
| 37 | * Insert query |
| 38 | */ |
| 39 | private const SPARQL_INSERT = <<<SPARQL |
| 40 | INSERT DATA { |
| 41 | %s |
| 42 | }; |
| 43 | |
| 44 | SPARQL; |
| 45 | |
| 46 | /** |
| 47 | * Delete query |
| 48 | */ |
| 49 | private const SPARQL_DELETE = <<<SPARQLD |
| 50 | DELETE { |
| 51 | ?category ?x ?y |
| 52 | } WHERE { |
| 53 | ?category ?x ?y |
| 54 | VALUES ?category { |
| 55 | %s |
| 56 | } |
| 57 | }; |
| 58 | |
| 59 | SPARQLD; |
| 60 | |
| 61 | /** |
| 62 | * @var RdfWriter |
| 63 | */ |
| 64 | private $rdfWriter; |
| 65 | /** |
| 66 | * Categories RDF helper. |
| 67 | * @var CategoriesRdf |
| 68 | */ |
| 69 | private $categoriesRdf; |
| 70 | |
| 71 | private $startTS; |
| 72 | private $endTS; |
| 73 | |
| 74 | /** |
| 75 | * List of processed page IDs, |
| 76 | * so we don't try to process same thing twice |
| 77 | * @var true[] |
| 78 | */ |
| 79 | protected $processed = []; |
| 80 | |
| 81 | public function __construct() { |
| 82 | parent::__construct(); |
| 83 | |
| 84 | $this->addDescription( "Generate RDF dump of category changes in a wiki." ); |
| 85 | |
| 86 | $this->setBatchSize( 200 ); |
| 87 | $this->addOption( 'output', "Output file (default is stdout). Will be overwritten.", false, |
| 88 | true, 'o' ); |
| 89 | $this->addOption( 'start', 'Starting timestamp (inclusive), in ISO or MediaWiki format.', |
| 90 | true, true, 's' ); |
| 91 | $this->addOption( 'end', 'Ending timestamp (exclusive), in ISO or MediaWiki format.', true, |
| 92 | true, 'e' ); |
| 93 | } |
| 94 | |
| 95 | /** |
| 96 | * Initialize external service classes. |
| 97 | */ |
| 98 | public function initialize() { |
| 99 | // SPARQL Update syntax is close to Turtle format, so we can use Turtle writer. |
| 100 | $this->rdfWriter = new TurtleRdfWriter(); |
| 101 | $this->categoriesRdf = new CategoriesRdf( $this->rdfWriter ); |
| 102 | } |
| 103 | |
| 104 | public function execute() { |
| 105 | $this->initialize(); |
| 106 | $startTS = new MWTimestamp( $this->getOption( "start" ) ); |
| 107 | |
| 108 | $endTS = new MWTimestamp( $this->getOption( "end" ) ); |
| 109 | $now = new MWTimestamp(); |
| 110 | $rcMaxAge = $this->getConfig()->get( MainConfigNames::RCMaxAge ); |
| 111 | |
| 112 | if ( (int)$now->getTimestamp( TS_UNIX ) - (int)$startTS->getTimestamp( TS_UNIX ) > $rcMaxAge ) { |
| 113 | $this->error( "Start timestamp too old, maximum RC age is $rcMaxAge!" ); |
| 114 | } |
| 115 | if ( (int)$now->getTimestamp( TS_UNIX ) - (int)$endTS->getTimestamp( TS_UNIX ) > $rcMaxAge ) { |
| 116 | $this->error( "End timestamp too old, maximum RC age is $rcMaxAge!" ); |
| 117 | } |
| 118 | |
| 119 | $this->startTS = $startTS->getTimestamp(); |
| 120 | $this->endTS = $endTS->getTimestamp(); |
| 121 | |
| 122 | $outFile = $this->getOption( 'output', 'php://stdout' ); |
| 123 | if ( $outFile === '-' ) { |
| 124 | $outFile = 'php://stdout'; |
| 125 | } |
| 126 | |
| 127 | $output = fopen( $outFile, 'wb' ); |
| 128 | |
| 129 | $this->categoriesRdf->setupPrefixes(); |
| 130 | $this->rdfWriter->start(); |
| 131 | |
| 132 | $prefixes = $this->getRdf(); |
| 133 | // We have to strip @ from prefix, since SPARQL UPDATE doesn't use them |
| 134 | // Also strip dot at the end. |
| 135 | $prefixes = preg_replace( [ '/^@/m', '/\s*[.]$/m' ], '', $prefixes ); |
| 136 | fwrite( $output, $prefixes ); |
| 137 | |
| 138 | $dbr = $this->getDB( DB_REPLICA, [ 'vslow' ] ); |
| 139 | |
| 140 | // Deletes go first because if the page was deleted, other changes |
| 141 | // do not matter. This only gets true deletes, i.e. not pages that were restored. |
| 142 | $this->handleDeletes( $dbr, $output ); |
| 143 | // Moves go before additions because if category is moved, we should not process creation |
| 144 | // as it would produce wrong data - because create row has old title |
| 145 | $this->handleMoves( $dbr, $output ); |
| 146 | // We need to handle restores too since delete may have happened in previous update. |
| 147 | $this->handleRestores( $dbr, $output ); |
| 148 | // Process newly added pages |
| 149 | $this->handleAdds( $dbr, $output ); |
| 150 | // Process page edits |
| 151 | $this->handleEdits( $dbr, $output ); |
| 152 | // Process categorization changes |
| 153 | $this->handleCategorization( $dbr, $output ); |
| 154 | |
| 155 | // Update timestamp |
| 156 | fwrite( $output, $this->updateTS( $this->endTS ) ); |
| 157 | } |
| 158 | |
| 159 | /** |
| 160 | * Get the text of SPARQL INSERT DATA clause |
| 161 | * @return string |
| 162 | */ |
| 163 | private function getInsertRdf() { |
| 164 | $rdfText = $this->getRdf(); |
| 165 | if ( !$rdfText ) { |
| 166 | return ""; |
| 167 | } |
| 168 | return sprintf( self::SPARQL_INSERT, $rdfText ); |
| 169 | } |
| 170 | |
| 171 | /** |
| 172 | * Get SPARQL for updating set of categories |
| 173 | * @param IReadableDatabase $dbr |
| 174 | * @param string[] $deleteUrls List of URIs to be deleted, with <> |
| 175 | * @param string[] $pages List of categories: id => title |
| 176 | * @param string $mark Marks which operation requests the query |
| 177 | * @return string SPARQL query |
| 178 | */ |
| 179 | private function getCategoriesUpdate( IReadableDatabase $dbr, $deleteUrls, $pages, $mark ) { |
| 180 | if ( !$deleteUrls ) { |
| 181 | return ""; |
| 182 | } |
| 183 | |
| 184 | if ( $pages ) { |
| 185 | $this->writeParentCategories( $dbr, $pages ); |
| 186 | } |
| 187 | |
| 188 | return "# $mark\n" . sprintf( self::SPARQL_DELETE, implode( ' ', $deleteUrls ) ) . |
| 189 | $this->getInsertRdf(); |
| 190 | } |
| 191 | |
| 192 | /** |
| 193 | * Write parent data for a set of categories. |
| 194 | * The list has the child categories. |
| 195 | * @param IReadableDatabase $dbr |
| 196 | * @param string[] $pages List of child categories: id => title |
| 197 | */ |
| 198 | private function writeParentCategories( IReadableDatabase $dbr, $pages ) { |
| 199 | foreach ( $this->getCategoryLinksIterator( $dbr, array_keys( $pages ), __METHOD__ ) as $row ) { |
| 200 | $this->categoriesRdf->writeCategoryLinkData( $pages[$row->cl_from], $row->cl_to ); |
| 201 | } |
| 202 | } |
| 203 | |
| 204 | /** |
| 205 | * Generate SPARQL Update code for updating dump timestamp |
| 206 | * @param string|int $timestamp Timestamp for last change |
| 207 | * @return string SPARQL Update query for timestamp. |
| 208 | */ |
| 209 | public function updateTS( $timestamp ) { |
| 210 | $dumpUrl = '<' . $this->categoriesRdf->getDumpURI() . '>'; |
| 211 | $ts = wfTimestamp( TS_ISO_8601, $timestamp ); |
| 212 | $tsQuery = <<<SPARQL |
| 213 | DELETE { |
| 214 | $dumpUrl schema:dateModified ?o . |
| 215 | } |
| 216 | WHERE { |
| 217 | $dumpUrl schema:dateModified ?o . |
| 218 | }; |
| 219 | INSERT DATA { |
| 220 | $dumpUrl schema:dateModified "$ts"^^xsd:dateTime . |
| 221 | } |
| 222 | |
| 223 | SPARQL; |
| 224 | return $tsQuery; |
| 225 | } |
| 226 | |
| 227 | /** |
| 228 | * Set up standard iterator for retrieving category changes. |
| 229 | * @param IReadableDatabase $dbr |
| 230 | * @param string[] $columns List of additional fields to get |
| 231 | * @param string[] $extra_tables List of additional tables to join |
| 232 | * @param string $fname Name of the calling function |
| 233 | * @return BatchRowIterator |
| 234 | */ |
| 235 | private function setupChangesIterator( |
| 236 | IReadableDatabase $dbr, |
| 237 | array $columns = [], |
| 238 | array $extra_tables = [], |
| 239 | $fname = __METHOD__ |
| 240 | ) { |
| 241 | $tables = [ 'recentchanges', 'page_props', 'category' ]; |
| 242 | if ( $extra_tables ) { |
| 243 | $tables = array_merge( $tables, $extra_tables ); |
| 244 | } |
| 245 | $it = new BatchRowIterator( $dbr, |
| 246 | $tables, |
| 247 | [ 'rc_timestamp' ], |
| 248 | $this->mBatchSize |
| 249 | ); |
| 250 | $this->addTimestampConditions( $it, $dbr ); |
| 251 | $it->addJoinConditions( |
| 252 | [ |
| 253 | 'page_props' => [ |
| 254 | 'LEFT JOIN', [ 'pp_propname' => 'hiddencat', 'pp_page = rc_cur_id' ] |
| 255 | ], |
| 256 | 'category' => [ |
| 257 | 'LEFT JOIN', [ 'cat_title = rc_title' ] |
| 258 | ] |
| 259 | ] |
| 260 | ); |
| 261 | $it->setFetchColumns( array_merge( $columns, [ |
| 262 | 'rc_title', |
| 263 | 'rc_cur_id', |
| 264 | 'pp_propname', |
| 265 | 'cat_pages', |
| 266 | 'cat_subcats', |
| 267 | 'cat_files' |
| 268 | ] ) ); |
| 269 | $it->setCaller( $fname ); |
| 270 | return $it; |
| 271 | } |
| 272 | |
| 273 | /** |
| 274 | * Fetch newly created categories |
| 275 | * @param IReadableDatabase $dbr |
| 276 | * @param string $fname Name of the calling function |
| 277 | * @return BatchRowIterator |
| 278 | */ |
| 279 | protected function getNewCatsIterator( IReadableDatabase $dbr, $fname ) { |
| 280 | $it = $this->setupChangesIterator( $dbr, [], [], $fname ); |
| 281 | $it->addConditions( [ |
| 282 | 'rc_namespace' => NS_CATEGORY, |
| 283 | 'rc_new' => 1, |
| 284 | ] ); |
| 285 | return $it; |
| 286 | } |
| 287 | |
| 288 | /** |
| 289 | * Fetch moved categories |
| 290 | * @param IReadableDatabase $dbr |
| 291 | * @param string $fname Name of the calling function |
| 292 | * @return BatchRowIterator |
| 293 | */ |
| 294 | protected function getMovedCatsIterator( IReadableDatabase $dbr, $fname ) { |
| 295 | $it = $this->setupChangesIterator( |
| 296 | $dbr, |
| 297 | [ 'page_title', 'page_namespace' ], |
| 298 | [ 'page' ], |
| 299 | $fname |
| 300 | ); |
| 301 | $it->addConditions( [ |
| 302 | 'rc_namespace' => NS_CATEGORY, |
| 303 | 'rc_new' => 0, |
| 304 | 'rc_log_type' => 'move', |
| 305 | 'rc_type' => RC_LOG, |
| 306 | ] ); |
| 307 | $it->addJoinConditions( [ |
| 308 | 'page' => [ 'JOIN', 'rc_cur_id = page_id' ], |
| 309 | ] ); |
| 310 | $this->addIndex( $it ); |
| 311 | return $it; |
| 312 | } |
| 313 | |
| 314 | /** |
| 315 | * Fetch deleted categories |
| 316 | * @param IReadableDatabase $dbr |
| 317 | * @param string $fname Name of the calling function |
| 318 | * @return BatchRowIterator |
| 319 | */ |
| 320 | protected function getDeletedCatsIterator( IReadableDatabase $dbr, $fname ) { |
| 321 | $it = new BatchRowIterator( $dbr, |
| 322 | 'recentchanges', |
| 323 | [ 'rc_timestamp' ], |
| 324 | $this->mBatchSize |
| 325 | ); |
| 326 | $this->addTimestampConditions( $it, $dbr ); |
| 327 | $it->addConditions( [ |
| 328 | 'rc_namespace' => NS_CATEGORY, |
| 329 | 'rc_new' => 0, |
| 330 | 'rc_log_type' => 'delete', |
| 331 | 'rc_log_action' => 'delete', |
| 332 | 'rc_type' => RC_LOG, |
| 333 | // We will fetch ones that do not have page record. If they do, |
| 334 | // this means they were restored, thus restoring handler will pick it up. |
| 335 | 'NOT EXISTS (SELECT * FROM page WHERE page_id = rc_cur_id)', |
| 336 | ] ); |
| 337 | $this->addIndex( $it ); |
| 338 | $it->setFetchColumns( [ 'rc_cur_id', 'rc_title' ] ); |
| 339 | $it->setCaller( $fname ); |
| 340 | return $it; |
| 341 | } |
| 342 | |
| 343 | /** |
| 344 | * Fetch restored categories |
| 345 | * @param IReadableDatabase $dbr |
| 346 | * @param string $fname Name of the calling function |
| 347 | * @return BatchRowIterator |
| 348 | */ |
| 349 | protected function getRestoredCatsIterator( IReadableDatabase $dbr, $fname ) { |
| 350 | $it = $this->setupChangesIterator( $dbr, [], [], $fname ); |
| 351 | $it->addConditions( [ |
| 352 | 'rc_namespace' => NS_CATEGORY, |
| 353 | 'rc_new' => 0, |
| 354 | 'rc_log_type' => 'delete', |
| 355 | 'rc_log_action' => 'restore', |
| 356 | 'rc_type' => RC_LOG, |
| 357 | // We will only fetch ones that have page record |
| 358 | 'EXISTS (SELECT page_id FROM page WHERE page_id = rc_cur_id)', |
| 359 | ] ); |
| 360 | $this->addIndex( $it ); |
| 361 | return $it; |
| 362 | } |
| 363 | |
| 364 | /** |
| 365 | * Fetch categorization changes or edits |
| 366 | * @param IReadableDatabase $dbr |
| 367 | * @param int $type |
| 368 | * @param string $fname Name of the calling function |
| 369 | * @return BatchRowIterator |
| 370 | */ |
| 371 | protected function getChangedCatsIterator( IReadableDatabase $dbr, $type, $fname ) { |
| 372 | $it = $this->setupChangesIterator( $dbr, [], [], $fname ); |
| 373 | $it->addConditions( [ |
| 374 | 'rc_namespace' => NS_CATEGORY, |
| 375 | 'rc_new' => 0, |
| 376 | 'rc_type' => $type, |
| 377 | ] ); |
| 378 | $this->addIndex( $it ); |
| 379 | return $it; |
| 380 | } |
| 381 | |
| 382 | /** |
| 383 | * Add timestamp limits to iterator |
| 384 | * @param BatchRowIterator $it Iterator |
| 385 | * @param IReadableDatabase $dbr |
| 386 | */ |
| 387 | private function addTimestampConditions( BatchRowIterator $it, IReadableDatabase $dbr ) { |
| 388 | $it->addConditions( [ |
| 389 | $dbr->expr( 'rc_timestamp', '>=', $dbr->timestamp( $this->startTS ) ), |
| 390 | $dbr->expr( 'rc_timestamp', '<', $dbr->timestamp( $this->endTS ) ), |
| 391 | ] ); |
| 392 | } |
| 393 | |
| 394 | /** |
| 395 | * Need to force index, somehow on terbium the optimizer chooses wrong one |
| 396 | * @param BatchRowIterator $it |
| 397 | */ |
| 398 | private function addIndex( BatchRowIterator $it ) { |
| 399 | $it->addOptions( [ |
| 400 | 'USE INDEX' => [ 'recentchanges' => 'rc_new_name_timestamp' ] |
| 401 | ] ); |
| 402 | } |
| 403 | |
| 404 | /** |
| 405 | * Get iterator for links for categories. |
| 406 | * @param IReadableDatabase $dbr |
| 407 | * @param int[] $ids List of page IDs |
| 408 | * @param string $fname Name of the calling function |
| 409 | * @return Traversable |
| 410 | */ |
| 411 | protected function getCategoryLinksIterator( IReadableDatabase $dbr, array $ids, $fname ) { |
| 412 | $it = new BatchRowIterator( |
| 413 | $dbr, |
| 414 | 'categorylinks', |
| 415 | [ 'cl_from', 'cl_to' ], |
| 416 | $this->mBatchSize |
| 417 | ); |
| 418 | $it->addConditions( [ |
| 419 | 'cl_type' => 'subcat', |
| 420 | 'cl_from' => $ids |
| 421 | ] ); |
| 422 | $it->setFetchColumns( [ 'cl_from', 'cl_to' ] ); |
| 423 | $it->setCaller( $fname ); |
| 424 | return new RecursiveIteratorIterator( $it ); |
| 425 | } |
| 426 | |
| 427 | /** |
| 428 | * Get accumulated RDF. |
| 429 | * @return string |
| 430 | */ |
| 431 | public function getRdf() { |
| 432 | return $this->rdfWriter->drain(); |
| 433 | } |
| 434 | |
| 435 | /** |
| 436 | * Handle category deletes. |
| 437 | * @param IReadableDatabase $dbr |
| 438 | * @param resource $output File to write the output |
| 439 | */ |
| 440 | public function handleDeletes( IReadableDatabase $dbr, $output ) { |
| 441 | // This only does "true" deletes - i.e. those that the page stays deleted |
| 442 | |
| 443 | foreach ( $this->getDeletedCatsIterator( $dbr, __METHOD__ ) as $batch ) { |
| 444 | $deleteUrls = []; |
| 445 | foreach ( $batch as $row ) { |
| 446 | // This can produce duplicates, we don't care |
| 447 | $deleteUrls[] = '<' . $this->categoriesRdf->labelToUrl( $row->rc_title ) . '>'; |
| 448 | $this->processed[$row->rc_cur_id] = true; |
| 449 | } |
| 450 | fwrite( $output, $this->getCategoriesUpdate( $dbr, $deleteUrls, [], "Deletes" ) ); |
| 451 | } |
| 452 | } |
| 453 | |
| 454 | /** |
| 455 | * Write category data to RDF. |
| 456 | * @param stdclass $row Database row |
| 457 | */ |
| 458 | private function writeCategoryData( $row ) { |
| 459 | $this->categoriesRdf->writeCategoryData( |
| 460 | $row->rc_title, |
| 461 | $row->pp_propname === 'hiddencat', |
| 462 | (int)$row->cat_pages - (int)$row->cat_subcats - (int)$row->cat_files, |
| 463 | (int)$row->cat_subcats |
| 464 | ); |
| 465 | } |
| 466 | |
| 467 | /** |
| 468 | * @param IReadableDatabase $dbr |
| 469 | * @param resource $output |
| 470 | */ |
| 471 | public function handleMoves( IReadableDatabase $dbr, $output ) { |
| 472 | foreach ( $this->getMovedCatsIterator( $dbr, __METHOD__ ) as $batch ) { |
| 473 | $pages = []; |
| 474 | $deleteUrls = []; |
| 475 | foreach ( $batch as $row ) { |
| 476 | $deleteUrls[] = '<' . $this->categoriesRdf->labelToUrl( $row->rc_title ) . '>'; |
| 477 | |
| 478 | if ( isset( $this->processed[$row->rc_cur_id] ) ) { |
| 479 | // We already captured this one before |
| 480 | continue; |
| 481 | } |
| 482 | |
| 483 | if ( $row->page_namespace != NS_CATEGORY ) { |
| 484 | // If page was moved out of Category:, we'll just delete |
| 485 | continue; |
| 486 | } |
| 487 | $row->rc_title = $row->page_title; |
| 488 | $this->writeCategoryData( $row ); |
| 489 | $pages[$row->rc_cur_id] = $row->page_title; |
| 490 | $this->processed[$row->rc_cur_id] = true; |
| 491 | } |
| 492 | |
| 493 | fwrite( $output, $this->getCategoriesUpdate( $dbr, $deleteUrls, $pages, "Moves" ) ); |
| 494 | } |
| 495 | } |
| 496 | |
| 497 | /** |
| 498 | * @param IReadableDatabase $dbr |
| 499 | * @param resource $output |
| 500 | */ |
| 501 | public function handleRestores( IReadableDatabase $dbr, $output ) { |
| 502 | fwrite( $output, "# Restores\n" ); |
| 503 | |
| 504 | // This will only find those restores that were not deleted later. |
| 505 | foreach ( $this->getRestoredCatsIterator( $dbr, __METHOD__ ) as $batch ) { |
| 506 | $pages = []; |
| 507 | foreach ( $batch as $row ) { |
| 508 | if ( isset( $this->processed[$row->rc_cur_id] ) ) { |
| 509 | // We already captured this one before |
| 510 | continue; |
| 511 | } |
| 512 | $this->writeCategoryData( $row ); |
| 513 | $pages[$row->rc_cur_id] = $row->rc_title; |
| 514 | $this->processed[$row->rc_cur_id] = true; |
| 515 | } |
| 516 | |
| 517 | if ( !$pages ) { |
| 518 | continue; |
| 519 | } |
| 520 | |
| 521 | $this->writeParentCategories( $dbr, $pages ); |
| 522 | |
| 523 | fwrite( $output, $this->getInsertRdf() ); |
| 524 | } |
| 525 | } |
| 526 | |
| 527 | /** |
| 528 | * @param IReadableDatabase $dbr |
| 529 | * @param resource $output |
| 530 | */ |
| 531 | public function handleAdds( IReadableDatabase $dbr, $output ) { |
| 532 | fwrite( $output, "# Additions\n" ); |
| 533 | |
| 534 | foreach ( $this->getNewCatsIterator( $dbr, __METHOD__ ) as $batch ) { |
| 535 | $pages = []; |
| 536 | foreach ( $batch as $row ) { |
| 537 | if ( isset( $this->processed[$row->rc_cur_id] ) ) { |
| 538 | // We already captured this one before |
| 539 | continue; |
| 540 | } |
| 541 | $this->writeCategoryData( $row ); |
| 542 | $pages[$row->rc_cur_id] = $row->rc_title; |
| 543 | $this->processed[$row->rc_cur_id] = true; |
| 544 | } |
| 545 | |
| 546 | if ( !$pages ) { |
| 547 | continue; |
| 548 | } |
| 549 | |
| 550 | $this->writeParentCategories( $dbr, $pages ); |
| 551 | fwrite( $output, $this->getInsertRdf() ); |
| 552 | } |
| 553 | } |
| 554 | |
| 555 | /** |
| 556 | * Handle edits for category texts |
| 557 | * @param IReadableDatabase $dbr |
| 558 | * @param resource $output |
| 559 | */ |
| 560 | public function handleEdits( IReadableDatabase $dbr, $output ) { |
| 561 | // Editing category can change hidden flag and add new parents. |
| 562 | // TODO: it's pretty expensive to update all edited categories, and most edits |
| 563 | // aren't actually interesting for us. Some way to know which are interesting? |
| 564 | // We can capture recategorization on the next step, but not change in hidden status. |
| 565 | |
| 566 | foreach ( $this->getChangedCatsIterator( $dbr, RC_EDIT, __METHOD__ ) as $batch ) { |
| 567 | $pages = []; |
| 568 | $deleteUrls = []; |
| 569 | foreach ( $batch as $row ) { |
| 570 | // Note that on categorization event, cur_id points to |
| 571 | // the child page, not the parent category! |
| 572 | if ( isset( $this->processed[$row->rc_cur_id] ) ) { |
| 573 | // We already captured this one before |
| 574 | continue; |
| 575 | } |
| 576 | $this->writeCategoryData( $row ); |
| 577 | $pages[$row->rc_cur_id] = $row->rc_title; |
| 578 | $this->processed[$row->rc_cur_id] = true; |
| 579 | $deleteUrls[] = '<' . $this->categoriesRdf->labelToUrl( $row->rc_title ) . '>'; |
| 580 | } |
| 581 | |
| 582 | fwrite( $output, $this->getCategoriesUpdate( $dbr, $deleteUrls, $pages, "Edits" ) ); |
| 583 | } |
| 584 | } |
| 585 | |
| 586 | /** |
| 587 | * Handles categorization changes |
| 588 | * @param IReadableDatabase $dbr |
| 589 | * @param resource $output |
| 590 | */ |
| 591 | public function handleCategorization( IReadableDatabase $dbr, $output ) { |
| 592 | $processedTitle = []; |
| 593 | |
| 594 | // Categorization change can add new parents and change counts |
| 595 | // for the parent category. |
| 596 | |
| 597 | foreach ( $this->getChangedCatsIterator( $dbr, RC_CATEGORIZE, __METHOD__ ) as $batch ) { |
| 598 | /* |
| 599 | * Note that on categorization event, cur_id points to |
| 600 | * the child page, not the parent category! |
| 601 | * So we need to have a two-stage process, since we have ID from one |
| 602 | * category and title from another, and we need both for proper updates. |
| 603 | * TODO: For now, we do full update even though some data hasn't changed, |
| 604 | * e.g. parents for parent cat and counts for child cat. |
| 605 | */ |
| 606 | $childPages = []; |
| 607 | $parentCats = []; |
| 608 | foreach ( $batch as $row ) { |
| 609 | $childPages[$row->rc_cur_id] = true; |
| 610 | $parentCats[$row->rc_title] = true; |
| 611 | } |
| 612 | |
| 613 | $pages = []; |
| 614 | $deleteUrls = []; |
| 615 | |
| 616 | if ( $childPages ) { |
| 617 | // Load child rows by ID |
| 618 | $childRows = $dbr->newSelectQueryBuilder() |
| 619 | ->select( [ |
| 620 | 'page_id', |
| 621 | 'rc_title' => 'page_title', |
| 622 | 'pp_propname', |
| 623 | 'cat_pages', |
| 624 | 'cat_subcats', |
| 625 | 'cat_files', |
| 626 | ] ) |
| 627 | ->from( 'page' ) |
| 628 | ->leftJoin( 'page_props', null, [ 'pp_propname' => 'hiddencat', 'pp_page = page_id' ] ) |
| 629 | ->leftJoin( 'category', null, [ 'cat_title = page_title' ] ) |
| 630 | ->where( [ 'page_namespace' => NS_CATEGORY, 'page_id' => array_keys( $childPages ) ] ) |
| 631 | ->caller( __METHOD__ )->fetchResultSet(); |
| 632 | foreach ( $childRows as $row ) { |
| 633 | if ( isset( $this->processed[$row->page_id] ) ) { |
| 634 | // We already captured this one before |
| 635 | continue; |
| 636 | } |
| 637 | $this->writeCategoryData( $row ); |
| 638 | if ( $row->page_id ) { |
| 639 | $pages[$row->page_id] = $row->rc_title; |
| 640 | $deleteUrls[] = '<' . $this->categoriesRdf->labelToUrl( $row->rc_title ) . '>'; |
| 641 | $this->processed[$row->page_id] = true; |
| 642 | } |
| 643 | } |
| 644 | } |
| 645 | |
| 646 | if ( $parentCats ) { |
| 647 | // Load parent rows by title |
| 648 | $parentRows = $dbr->newSelectQueryBuilder() |
| 649 | ->select( [ |
| 650 | 'page_id', |
| 651 | 'rc_title' => 'cat_title', |
| 652 | 'pp_propname', |
| 653 | 'cat_pages', |
| 654 | 'cat_subcats', |
| 655 | 'cat_files', |
| 656 | ] ) |
| 657 | ->from( 'category' ) |
| 658 | ->leftJoin( 'page', null, [ 'page_title = cat_title', 'page_namespace' => NS_CATEGORY ] ) |
| 659 | ->leftJoin( 'page_props', null, [ 'pp_propname' => 'hiddencat', 'pp_page = page_id' ] ) |
| 660 | ->where( [ 'cat_title' => array_map( 'strval', array_keys( $parentCats ) ) ] ) |
| 661 | ->caller( __METHOD__ )->fetchResultSet(); |
| 662 | foreach ( $parentRows as $row ) { |
| 663 | if ( $row->page_id && isset( $this->processed[$row->page_id] ) ) { |
| 664 | // We already captured this one before |
| 665 | continue; |
| 666 | } |
| 667 | if ( isset( $processedTitle[$row->rc_title] ) ) { |
| 668 | // We already captured this one before |
| 669 | continue; |
| 670 | } |
| 671 | $this->writeCategoryData( $row ); |
| 672 | if ( $row->page_id ) { |
| 673 | $pages[$row->page_id] = $row->rc_title; |
| 674 | $deleteUrls[] = '<' . $this->categoriesRdf->labelToUrl( $row->rc_title ) . '>'; |
| 675 | $this->processed[$row->page_id] = true; |
| 676 | } |
| 677 | $processedTitle[$row->rc_title] = true; |
| 678 | } |
| 679 | } |
| 680 | |
| 681 | fwrite( $output, $this->getCategoriesUpdate( $dbr, $deleteUrls, $pages, "Changes" ) ); |
| 682 | } |
| 683 | } |
| 684 | } |
| 685 | |
| 686 | $maintClass = CategoryChangesAsRdf::class; |
| 687 | require_once RUN_MAINTENANCE_IF_MAIN; |