3 * See docs/deferred.txt
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
18 * http://www.gnu.org/copyleft/gpl.html
20 * @todo document (e.g. one-sentence top-level class description).
27 var $mId, //!< Page ID of the article linked from
28 $mTitle, //!< Title object of the article linked from
29 $mLinks, //!< Map of title strings to IDs for the links in the document
30 $mImages, //!< DB keys of the images used, in the array key only
31 $mTemplates, //!< Map of title strings to IDs for the template references, including broken ones
32 $mDistantTemplates,//!< Map of title strings to IDs for the distant template references, including broken ones
33 $mExternals, //!< URLs of external links, array key only
34 $mCategories, //!< Map of category names to sort keys
35 $mInterlangs, //!< Map of language codes to titles
36 $mProperties, //!< Map of arbitrary name to value
37 $mDb, //!< Database connection reference
38 $mOptions, //!< SELECT options to be used (array)
39 $mRecursive; //!< Whether to queue jobs for recursive updates
45 * @param $title Title of the page we're updating
46 * @param $parserOutput ParserOutput: output from a full parse of this page
47 * @param $recursive Boolean: queue jobs for recursive updates?
49 function __construct( $title, $parserOutput, $recursive = true ) {
50 global $wgAntiLockFlags;
52 if ( $wgAntiLockFlags & ALF_NO_LINK_LOCK
) {
53 $this->mOptions
= array();
55 $this->mOptions
= array( 'FOR UPDATE' );
57 $this->mDb
= wfGetDB( DB_MASTER
);
59 if ( !is_object( $title ) ) {
60 throw new MWException( "The calling convention to LinksUpdate::LinksUpdate() has changed. " .
61 "Please see Article::editUpdates() for an invocation example.\n" );
63 $this->mTitle
= $title;
64 $this->mId
= $title->getArticleID();
66 $this->mParserOutput
= $parserOutput;
67 $this->mLinks
= $parserOutput->getLinks();
68 $this->mImages
= $parserOutput->getImages();
69 $this->mTemplates
= $parserOutput->getTemplates();
70 $this->mDistantTemplates
= $parserOutput->getDistantTemplates();
71 $this->mExternals
= $parserOutput->getExternalLinks();
72 $this->mCategories
= $parserOutput->getCategories();
73 $this->mProperties
= $parserOutput->getProperties();
74 $this->mInterwikis
= $parserOutput->getInterwikiLinks();
76 # Convert the format of the interlanguage links
77 # I didn't want to change it in the ParserOutput, because that array is passed all
78 # the way back to the skin, so either a skin API break would be required, or an
79 # inefficient back-conversion.
80 $ill = $parserOutput->getLanguageLinks();
81 $this->mInterlangs
= array();
82 foreach ( $ill as $link ) {
83 list( $key, $title ) = explode( ':', $link, 2 );
84 $this->mInterlangs
[$key] = $title;
87 foreach ( $this->mCategories
as &$sortkey ) {
88 # If the sortkey is longer then 255 bytes,
89 # it truncated by DB, and then doesn't get
90 # matched when comparing existing vs current
91 # categories, causing bug 25254.
92 # Also. substr behaves weird when given "".
93 if ( $sortkey !== '' ) {
94 $sortkey = substr( $sortkey, 0, 255 );
98 $this->mRecursive
= $recursive;
100 wfRunHooks( 'LinksUpdateConstructed', array( &$this ) );
104 * Update link tables with outgoing links from an updated article
106 public function doUpdate() {
107 global $wgUseDumbLinkUpdate;
109 wfRunHooks( 'LinksUpdate', array( &$this ) );
110 if ( $wgUseDumbLinkUpdate ) {
111 $this->doDumbUpdate();
113 $this->doIncrementalUpdate();
115 wfRunHooks( 'LinksUpdateComplete', array( &$this ) );
118 protected function doIncrementalUpdate() {
119 wfProfileIn( __METHOD__
);
122 $existing = $this->getExistingLinks();
123 $this->incrTableUpdate( 'pagelinks', 'pl', $this->getLinkDeletions( $existing ),
124 $this->getLinkInsertions( $existing ) );
127 $existing = $this->getExistingImages();
129 $imageDeletes = $this->getImageDeletions( $existing );
130 $this->incrTableUpdate( 'imagelinks', 'il', $imageDeletes,
131 $this->getImageInsertions( $existing ) );
133 # Invalidate all image description pages which had links added or removed
134 $imageUpdates = $imageDeletes +
array_diff_key( $this->mImages
, $existing );
135 $this->invalidateImageDescriptions( $imageUpdates );
138 $existing = $this->getExistingExternals();
139 $this->incrTableUpdate( 'externallinks', 'el', $this->getExternalDeletions( $existing ),
140 $this->getExternalInsertions( $existing ) );
143 $existing = $this->getExistingInterlangs();
144 $this->incrTableUpdate( 'langlinks', 'll', $this->getInterlangDeletions( $existing ),
145 $this->getInterlangInsertions( $existing ) );
147 # Inline interwiki links
148 $existing = $this->getExistingInterwikis();
149 $this->incrTableUpdate( 'iwlinks', 'iwl', $this->getInterwikiDeletions( $existing ),
150 $this->getInterwikiInsertions( $existing ) );
153 $existing = $this->getExistingTemplates();
154 $this->incrTableUpdate( 'templatelinks', 'tl', $this->getTemplateDeletions( $existing ),
155 $this->getTemplateInsertions( $existing ) );
157 # Distant template links
160 $existing = $this->getDistantExistingTemplates();
161 $this->incrSharedTableUpdate( 'globaltemplatelinks', 'gtl',
162 $this->getDistantTemplateDeletions( $existing ),
163 $this->getDistantTemplateInsertions( $existing ) );
167 $existing = $this->getExistingCategories();
169 $categoryDeletes = $this->getCategoryDeletions( $existing );
171 $this->incrTableUpdate( 'categorylinks', 'cl', $categoryDeletes,
172 $this->getCategoryInsertions( $existing ) );
174 # Invalidate all categories which were added, deleted or changed (set symmetric difference)
175 $categoryInserts = array_diff_assoc( $this->mCategories
, $existing );
176 $categoryUpdates = $categoryInserts +
$categoryDeletes;
177 $this->invalidateCategories( $categoryUpdates );
178 $this->updateCategoryCounts( $categoryInserts, $categoryDeletes );
181 $existing = $this->getExistingProperties();
183 $propertiesDeletes = $this->getPropertyDeletions( $existing );
185 $this->incrTableUpdate( 'page_props', 'pp', $propertiesDeletes,
186 $this->getPropertyInsertions( $existing ) );
188 # Invalidate the necessary pages
189 $changed = $propertiesDeletes +
array_diff_assoc( $this->mProperties
, $existing );
190 $this->invalidateProperties( $changed );
192 # Refresh links of all pages including this page
193 # This will be in a separate transaction
194 if ( $this->mRecursive
) {
195 $this->queueRecursiveJobs();
198 wfProfileOut( __METHOD__
);
202 * Link update which clears the previous entries and inserts new ones
203 * May be slower or faster depending on level of lock contention and write speed of DB
204 * Also useful where link table corruption needs to be repaired, e.g. in refreshLinks.php
206 protected function doDumbUpdate() {
207 wfProfileIn( __METHOD__
);
209 # Refresh category pages and image description pages
210 $existing = $this->getExistingCategories();
211 $categoryInserts = array_diff_assoc( $this->mCategories
, $existing );
212 $categoryDeletes = array_diff_assoc( $existing, $this->mCategories
);
213 $categoryUpdates = $categoryInserts +
$categoryDeletes;
214 $existing = $this->getExistingImages();
215 $imageUpdates = array_diff_key( $existing, $this->mImages
) +
array_diff_key( $this->mImages
, $existing );
217 $this->dumbTableUpdate( 'pagelinks', $this->getLinkInsertions(), 'pl_from' );
218 $this->dumbTableUpdate( 'imagelinks', $this->getImageInsertions(), 'il_from' );
219 $this->dumbTableUpdate( 'categorylinks', $this->getCategoryInsertions(), 'cl_from' );
220 $this->dumbTableUpdate( 'templatelinks', $this->getTemplateInsertions(), 'tl_from' );
221 $this->dumbTableUpdate( 'externallinks', $this->getExternalInsertions(), 'el_from' );
222 $this->dumbTableUpdate( 'langlinks', $this->getInterlangInsertions(),'ll_from' );
223 $this->dumbTableUpdate( 'iwlinks', $this->getInterwikiInsertions(),'iwl_from' );
224 $this->dumbTableUpdate( 'page_props', $this->getPropertyInsertions(), 'pp_page' );
226 # Update the cache of all the category pages and image description
227 # pages which were changed, and fix the category table count
228 $this->invalidateCategories( $categoryUpdates );
229 $this->updateCategoryCounts( $categoryInserts, $categoryDeletes );
230 $this->invalidateImageDescriptions( $imageUpdates );
232 # Refresh links of all pages including this page
233 # This will be in a separate transaction
234 if ( $this->mRecursive
) {
235 $this->queueRecursiveJobs();
238 wfProfileOut( __METHOD__
);
241 function queueRecursiveJobs() {
242 global $wgUpdateRowsPerJob;
243 wfProfileIn( __METHOD__
);
245 $cache = $this->mTitle
->getBacklinkCache();
246 $batches = $cache->partition( 'templatelinks', $wgUpdateRowsPerJob );
248 wfProfileOut( __METHOD__
);
252 foreach ( $batches as $batch ) {
253 list( $start, $end ) = $batch;
258 $jobs[] = new RefreshLinksJob2( $this->mTitle
, $params );
260 Job
::batchInsert( $jobs );
262 wfProfileOut( __METHOD__
);
266 * Invalidate the cache of a list of pages from a single namespace
268 * @param $namespace Integer
269 * @param $dbkeys Array
271 function invalidatePages( $namespace, $dbkeys ) {
272 if ( !count( $dbkeys ) ) {
277 * Determine which pages need to be updated
278 * This is necessary to prevent the job queue from smashing the DB with
279 * large numbers of concurrent invalidations of the same page
281 $now = $this->mDb
->timestamp();
283 $res = $this->mDb
->select( 'page', array( 'page_id' ),
285 'page_namespace' => $namespace,
286 'page_title IN (' . $this->mDb
->makeList( $dbkeys ) . ')',
287 'page_touched < ' . $this->mDb
->addQuotes( $now )
290 foreach ( $res as $row ) {
291 $ids[] = $row->page_id
;
293 if ( !count( $ids ) ) {
299 * We still need the page_touched condition, in case the row has changed since
300 * the non-locking select above.
302 $this->mDb
->update( 'page', array( 'page_touched' => $now ),
304 'page_id IN (' . $this->mDb
->makeList( $ids ) . ')',
305 'page_touched < ' . $this->mDb
->addQuotes( $now )
310 function invalidateCategories( $cats ) {
311 $this->invalidatePages( NS_CATEGORY
, array_keys( $cats ) );
315 * Update all the appropriate counts in the category table.
316 * @param $added associative array of category name => sort key
317 * @param $deleted associative array of category name => sort key
319 function updateCategoryCounts( $added, $deleted ) {
320 $a = new Article($this->mTitle
);
321 $a->updateCategoryCounts(
322 array_keys( $added ), array_keys( $deleted )
326 function invalidateImageDescriptions( $images ) {
327 $this->invalidatePages( NS_FILE
, array_keys( $images ) );
330 function dumbTableUpdate( $table, $insertions, $fromField ) {
331 $this->mDb
->delete( $table, array( $fromField => $this->mId
), __METHOD__
);
332 if ( count( $insertions ) ) {
333 # The link array was constructed without FOR UPDATE, so there may
334 # be collisions. This may cause minor link table inconsistencies,
335 # which is better than crippling the site with lock contention.
336 $this->mDb
->insert( $table, $insertions, __METHOD__
, array( 'IGNORE' ) );
341 * Update a table by doing a delete query then an insert query
344 function incrTableUpdate( $table, $prefix, $deletions, $insertions ) {
345 if ( $table == 'page_props' ) {
346 $fromField = 'pp_page';
348 $fromField = "{$prefix}_from";
350 $where = array( $fromField => $this->mId
);
351 if ( $table == 'pagelinks' ||
$table == 'templatelinks' ||
$table == 'iwlinks' ) {
352 if ( $table == 'iwlinks' ) {
353 $baseKey = 'iwl_prefix';
355 $baseKey = "{$prefix}_namespace";
357 $clause = $this->mDb
->makeWhereFrom2d( $deletions, $baseKey, "{$prefix}_title" );
364 if ( $table == 'langlinks' ) {
365 $toField = 'll_lang';
366 } elseif ( $table == 'page_props' ) {
367 $toField = 'pp_propname';
369 $toField = $prefix . '_to';
371 if ( count( $deletions ) ) {
372 $where[] = "$toField IN (" . $this->mDb
->makeList( array_keys( $deletions ) ) . ')';
378 $this->mDb
->delete( $table, $where, __METHOD__
);
380 if ( count( $insertions ) ) {
381 $this->mDb
->insert( 'globaltemplatelinks', $insertions['globaltemplatelinks'], __METHOD__
, 'IGNORE' );
382 $this->mDb
->insert( 'globalnamespaces', $insertions['globalnamespaces'], __METHOD__
, 'IGNORE' );
383 $this->mDb
->insert( 'globalinterwiki', $insertions['globalinterwiki'], __METHOD__
, 'IGNORE' );
388 * Update a shared table by doing a delete query then an insert query
391 function incrSharedTableUpdate( $table, $prefix, $deletions, $insertions ) {
397 $dbw = wfGetDB( DB_MASTER
, array(), $wgGlobalDB );
398 $where = array( "{$prefix}_from_wiki" => $wgWikiID,
399 "{$prefix}_from_page" => $this->mId
401 $baseKey = "{$prefix}_to_wiki";
402 $middleKey = "{$prefix}_to_namespace";
404 $clause = $dbw->makeWhereFrom3d( $deletions, $baseKey, $middleKey, "{$prefix}_to_title" );
412 $dbw->delete( $table, $where, __METHOD__
);
414 if ( count( $insertions ) ) {
415 $dbw->insert( $table, $insertions, __METHOD__
, 'IGNORE' );
421 * Get an array of pagelinks insertions for passing to the DB
422 * Skips the titles specified by the 2-D array $existing
425 function getLinkInsertions( $existing = array() ) {
427 foreach( $this->mLinks
as $ns => $dbkeys ) {
428 $diffs = isset( $existing[$ns] )
429 ?
array_diff_key( $dbkeys, $existing[$ns] )
431 foreach ( $diffs as $dbk => $id ) {
433 'pl_from' => $this->mId
,
434 'pl_namespace' => $ns,
443 * Get an array of template insertions. Like getLinkInsertions()
446 function getTemplateInsertions( $existing = array() ) {
448 foreach( $this->mTemplates
as $ns => $dbkeys ) {
449 $diffs = isset( $existing[$ns] ) ?
array_diff_key( $dbkeys, $existing[$ns] ) : $dbkeys;
450 foreach ( $diffs as $dbk => $id ) {
452 'tl_from' => $this->mId
,
453 'tl_namespace' => $ns,
462 * Get an array of distant template insertions. Like getLinkInsertions()
465 function getDistantTemplateInsertions( $existing = array() ) {
468 foreach( $this->mDistantTemplates
as $wikiid => $templatesToNS ) {
469 foreach( $templatesToNS as $ns => $dbkeys ) {
470 $diffs = isset( $existing[$wikiid] ) && isset( $existing[$wikiid][$ns] )
471 ?
array_diff_key( $dbkeys, $existing[$wikiid][$ns] )
473 $interwiki = Interwiki
::fetch( $wikiid );
474 $wikiid = $interwiki->getWikiID();
475 foreach ( $diffs as $dbk => $id ) {
476 $arr['globaltemplatelinks'][] = array(
477 'gtl_from_wiki' => $wgWikiID,
478 'gtl_from_page' => $this->mId
,
479 'gtl_from_namespace' => $this->mTitle
->getNamespace(),
480 'gtl_from_title' => $this->mTitle
->getText(),
481 'gtl_to_wiki' => $wikiid,
482 'gtl_to_namespace' => $ns,
483 'gtl_to_title' => $dbk
485 $arr['globalinterwiki'][] = array(
486 'giw_wikiid' => $wikiid,
487 'giw_prefix' => $prefix
489 $arr['globalnamespaces'][] = array(
490 'gn_wiki' => wfWikiID( ),
491 'gn_namespace' => $this->mTitle
->getNamespace(),
492 'gn_namespacetext' => $this->mTitle
->getNsText(),
501 * Get an array of image insertions
502 * Skips the names specified in $existing
505 function getImageInsertions( $existing = array() ) {
507 $diffs = array_diff_key( $this->mImages
, $existing );
508 foreach( $diffs as $iname => $dummy ) {
510 'il_from' => $this->mId
,
518 * Get an array of externallinks insertions. Skips the names specified in $existing
521 function getExternalInsertions( $existing = array() ) {
523 $diffs = array_diff_key( $this->mExternals
, $existing );
524 foreach( $diffs as $url => $dummy ) {
526 'el_from' => $this->mId
,
528 'el_index' => wfMakeUrlIndex( $url ),
535 * Get an array of category insertions
537 * @param $existing Array mapping existing category names to sort keys. If both
538 * match a link in $this, the link will be omitted from the output
541 function getCategoryInsertions( $existing = array() ) {
542 global $wgContLang, $wgCategoryCollation;
543 $diffs = array_diff_assoc( $this->mCategories
, $existing );
545 foreach ( $diffs as $name => $prefix ) {
546 $nt = Title
::makeTitleSafe( NS_CATEGORY
, $name );
547 $wgContLang->findVariantLink( $name, $nt, true );
549 if ( $this->mTitle
->getNamespace() == NS_CATEGORY
) {
551 } elseif ( $this->mTitle
->getNamespace() == NS_FILE
) {
557 # Treat custom sortkeys as a prefix, so that if multiple
558 # things are forced to sort as '*' or something, they'll
559 # sort properly in the category rather than in page_id
561 $sortkey = Collation
::singleton()->getSortKey(
562 $this->mTitle
->getCategorySortkey( $prefix ) );
565 'cl_from' => $this->mId
,
567 'cl_sortkey' => $sortkey,
568 'cl_timestamp' => $this->mDb
->timestamp(),
569 'cl_sortkey_prefix' => $prefix,
570 'cl_collation' => $wgCategoryCollation,
578 * Get an array of interlanguage link insertions
580 * @param $existing Array mapping existing language codes to titles
583 function getInterlangInsertions( $existing = array() ) {
584 $diffs = array_diff_assoc( $this->mInterlangs
, $existing );
586 foreach( $diffs as $lang => $title ) {
588 'll_from' => $this->mId
,
597 * Get an array of page property insertions
599 function getPropertyInsertions( $existing = array() ) {
600 $diffs = array_diff_assoc( $this->mProperties
, $existing );
602 foreach ( $diffs as $name => $value ) {
604 'pp_page' => $this->mId
,
605 'pp_propname' => $name,
606 'pp_value' => $value,
613 * Get an array of interwiki insertions for passing to the DB
614 * Skips the titles specified by the 2-D array $existing
617 function getInterwikiInsertions( $existing = array() ) {
619 foreach( $this->mInterwikis
as $prefix => $dbkeys ) {
620 $diffs = isset( $existing[$prefix] ) ?
array_diff_key( $dbkeys, $existing[$prefix] ) : $dbkeys;
621 foreach ( $diffs as $dbk => $id ) {
623 'iwl_from' => $this->mId
,
624 'iwl_prefix' => $prefix,
633 * Given an array of existing links, returns those links which are not in $this
634 * and thus should be deleted.
637 function getLinkDeletions( $existing ) {
639 foreach ( $existing as $ns => $dbkeys ) {
640 if ( isset( $this->mLinks
[$ns] ) ) {
641 $del[$ns] = array_diff_key( $existing[$ns], $this->mLinks
[$ns] );
643 $del[$ns] = $existing[$ns];
650 * Given an array of existing templates, returns those templates which are not in $this
651 * and thus should be deleted.
654 function getTemplateDeletions( $existing ) {
656 foreach ( $existing as $ns => $dbkeys ) {
657 if ( isset( $this->mTemplates
[$ns] ) ) {
658 $del[$ns] = array_diff_key( $existing[$ns], $this->mTemplates
[$ns] );
660 $del[$ns] = $existing[$ns];
667 * Given an array of existing templates, returns those templates which are not in $this
668 * and thus should be deleted.
671 function getDistantTemplateDeletions( $existing ) {
673 foreach ( $existing as $wikiid => $templatesForNS ) {
674 if ( isset( $this->mDistantTemplates
[$wikiid] ) ) {
675 $del[$wikiid] = array_diff_key( $existing[$wikiid], $this->mDistantTemplates
[$wikiid] );
677 $del[$wikiid] = $existing[$wikiid];
679 foreach ( $templatesForNS as $ns => $dbkeys ) {
680 if ( isset( $this->mDistantTemplates
[$wikiid][$ns] ) ) {
681 $del[$wikiid][$ns] = array_diff_key( $existing[$wikiid][$ns], $this->mDistantTemplates
[$wikiid][$ns] );
683 $del[$wikiid][$ns] = $existing[$wikiid][$ns];
691 * Given an array of existing images, returns those images which are not in $this
692 * and thus should be deleted.
695 function getImageDeletions( $existing ) {
696 return array_diff_key( $existing, $this->mImages
);
700 * Given an array of existing external links, returns those links which are not
701 * in $this and thus should be deleted.
704 function getExternalDeletions( $existing ) {
705 return array_diff_key( $existing, $this->mExternals
);
709 * Given an array of existing categories, returns those categories which are not in $this
710 * and thus should be deleted.
713 function getCategoryDeletions( $existing ) {
714 return array_diff_assoc( $existing, $this->mCategories
);
718 * Given an array of existing interlanguage links, returns those links which are not
719 * in $this and thus should be deleted.
722 function getInterlangDeletions( $existing ) {
723 return array_diff_assoc( $existing, $this->mInterlangs
);
727 * Get array of properties which should be deleted.
730 function getPropertyDeletions( $existing ) {
731 return array_diff_assoc( $existing, $this->mProperties
);
735 * Given an array of existing interwiki links, returns those links which are not in $this
736 * and thus should be deleted.
739 function getInterwikiDeletions( $existing ) {
741 foreach ( $existing as $prefix => $dbkeys ) {
742 if ( isset( $this->mInterwikis
[$prefix] ) ) {
743 $del[$prefix] = array_diff_key( $existing[$prefix], $this->mInterwikis
[$prefix] );
745 $del[$prefix] = $existing[$prefix];
752 * Get an array of existing links, as a 2-D array
755 function getExistingLinks() {
756 $res = $this->mDb
->select( 'pagelinks', array( 'pl_namespace', 'pl_title' ),
757 array( 'pl_from' => $this->mId
), __METHOD__
, $this->mOptions
);
759 foreach ( $res as $row ) {
760 if ( !isset( $arr[$row->pl_namespace
] ) ) {
761 $arr[$row->pl_namespace
] = array();
763 $arr[$row->pl_namespace
][$row->pl_title
] = 1;
769 * Get an array of existing templates, as a 2-D array
772 function getExistingTemplates() {
773 $res = $this->mDb
->select( 'templatelinks', array( 'tl_namespace', 'tl_title' ),
774 array( 'tl_from' => $this->mId
), __METHOD__
, $this->mOptions
);
776 foreach ( $res as $row ) {
777 if ( !isset( $arr[$row->tl_namespace
] ) ) {
778 $arr[$row->tl_namespace
] = array();
780 $arr[$row->tl_namespace
][$row->tl_title
] = 1;
786 * Get an array of existing distant templates, as a 3-D array
789 function getDistantExistingTemplates() {
795 $dbr = wfGetDB( DB_SLAVE
, array(), $wgGlobalDB );
796 $res = $dbr->select( 'globaltemplatelinks', array( 'gtl_to_wiki', 'gtl_to_namespace', 'gtl_to_title' ),
797 array( 'gtl_from_wiki' => $wgWikiID, 'gtl_from_page' => $this->mId
), __METHOD__
, $this->mOptions
);
798 while ( $row = $dbr->fetchObject( $res ) ) {
799 if ( !isset( $arr[$row->gtl_to_wiki
] ) ) {
800 $arr[$row->gtl_to_wiki
] = array();
802 if ( !isset( $arr[$row->gtl_to_wiki
][$row->gtl_to_namespace
] ) ) {
803 $arr[$row->gtl_to_wiki
][$row->gtl_to_namespace
] = array();
805 $arr[$row->gtl_to_wiki
][$row->gtl_to_namespace
][$row->gtl_to_title
] = 1;
807 $dbr->freeResult( $res );
813 * Get an array of existing images, image names in the keys
816 function getExistingImages() {
817 $res = $this->mDb
->select( 'imagelinks', array( 'il_to' ),
818 array( 'il_from' => $this->mId
), __METHOD__
, $this->mOptions
);
820 foreach ( $res as $row ) {
821 $arr[$row->il_to
] = 1;
827 * Get an array of existing external links, URLs in the keys
830 function getExistingExternals() {
831 $res = $this->mDb
->select( 'externallinks', array( 'el_to' ),
832 array( 'el_from' => $this->mId
), __METHOD__
, $this->mOptions
);
834 foreach ( $res as $row ) {
835 $arr[$row->el_to
] = 1;
841 * Get an array of existing categories, with the name in the key and sort key in the value.
844 function getExistingCategories() {
845 $res = $this->mDb
->select( 'categorylinks', array( 'cl_to', 'cl_sortkey_prefix' ),
846 array( 'cl_from' => $this->mId
), __METHOD__
, $this->mOptions
);
848 foreach ( $res as $row ) {
849 $arr[$row->cl_to
] = $row->cl_sortkey_prefix
;
855 * Get an array of existing interlanguage links, with the language code in the key and the
856 * title in the value.
859 function getExistingInterlangs() {
860 $res = $this->mDb
->select( 'langlinks', array( 'll_lang', 'll_title' ),
861 array( 'll_from' => $this->mId
), __METHOD__
, $this->mOptions
);
863 foreach ( $res as $row ) {
864 $arr[$row->ll_lang
] = $row->ll_title
;
870 * Get an array of existing inline interwiki links, as a 2-D array
871 * @return array (prefix => array(dbkey => 1))
873 protected function getExistingInterwikis() {
874 $res = $this->mDb
->select( 'iwlinks', array( 'iwl_prefix', 'iwl_title' ),
875 array( 'iwl_from' => $this->mId
), __METHOD__
, $this->mOptions
);
877 foreach ( $res as $row ) {
878 if ( !isset( $arr[$row->iwl_prefix
] ) ) {
879 $arr[$row->iwl_prefix
] = array();
881 $arr[$row->iwl_prefix
][$row->iwl_title
] = 1;
887 * Get an array of existing categories, with the name in the key and sort key in the value.
890 function getExistingProperties() {
891 $res = $this->mDb
->select( 'page_props', array( 'pp_propname', 'pp_value' ),
892 array( 'pp_page' => $this->mId
), __METHOD__
, $this->mOptions
);
894 foreach ( $res as $row ) {
895 $arr[$row->pp_propname
] = $row->pp_value
;
902 * Return the title object of the page being updated
904 function getTitle() {
905 return $this->mTitle
;
909 * Return the list of images used as generated by the parser
911 public function getImages() {
912 return $this->mImages
;
916 * Invalidate any necessary link lists related to page property changes
918 function invalidateProperties( $changed ) {
919 global $wgPagePropLinkInvalidations;
921 foreach ( $changed as $name => $value ) {
922 if ( isset( $wgPagePropLinkInvalidations[$name] ) ) {
923 $inv = $wgPagePropLinkInvalidations[$name];
924 if ( !is_array( $inv ) ) {
925 $inv = array( $inv );
927 foreach ( $inv as $table ) {
928 $update = new HTMLCacheUpdate( $this->mTitle
, $table );