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 if ( isset( $insertions['globaltemplatelinks'] ) ) {
382 $this->mDb
->insert( 'globaltemplatelinks', $insertions['globaltemplatelinks'], __METHOD__
, 'IGNORE' );
384 if ( isset( $insertions['globalnamespaces'] ) ) {
385 $this->mDb
->insert( 'globalnamespaces', $insertions['globalnamespaces'], __METHOD__
, 'IGNORE' );
387 if ( isset( $insertions['globalinterwiki'] ) ) {
388 $this->mDb
->insert( 'globalinterwiki', $insertions['globalinterwiki'], __METHOD__
, 'IGNORE' );
394 * Update a shared table by doing a delete query then an insert query
397 function incrSharedTableUpdate( $table, $prefix, $deletions, $insertions ) {
403 $dbw = wfGetDB( DB_MASTER
, array(), $wgGlobalDB );
404 $where = array( "{$prefix}_from_wiki" => $wgWikiID,
405 "{$prefix}_from_page" => $this->mId
407 $baseKey = "{$prefix}_to_wiki";
408 $middleKey = "{$prefix}_to_namespace";
410 $clause = $dbw->makeWhereFrom3d( $deletions, $baseKey, $middleKey, "{$prefix}_to_title" );
418 $dbw->delete( $table, $where, __METHOD__
);
420 if ( count( $insertions ) ) {
421 $dbw->insert( $table, $insertions, __METHOD__
, 'IGNORE' );
427 * Get an array of pagelinks insertions for passing to the DB
428 * Skips the titles specified by the 2-D array $existing
431 function getLinkInsertions( $existing = array() ) {
433 foreach( $this->mLinks
as $ns => $dbkeys ) {
434 $diffs = isset( $existing[$ns] )
435 ?
array_diff_key( $dbkeys, $existing[$ns] )
437 foreach ( $diffs as $dbk => $id ) {
439 'pl_from' => $this->mId
,
440 'pl_namespace' => $ns,
449 * Get an array of template insertions. Like getLinkInsertions()
452 function getTemplateInsertions( $existing = array() ) {
454 foreach( $this->mTemplates
as $ns => $dbkeys ) {
455 $diffs = isset( $existing[$ns] ) ?
array_diff_key( $dbkeys, $existing[$ns] ) : $dbkeys;
456 foreach ( $diffs as $dbk => $id ) {
458 'tl_from' => $this->mId
,
459 'tl_namespace' => $ns,
468 * Get an array of distant template insertions. Like getLinkInsertions()
471 function getDistantTemplateInsertions( $existing = array() ) {
474 foreach( $this->mDistantTemplates
as $wikiid => $templatesToNS ) {
475 foreach( $templatesToNS as $ns => $dbkeys ) {
476 $diffs = isset( $existing[$wikiid] ) && isset( $existing[$wikiid][$ns] )
477 ?
array_diff_key( $dbkeys, $existing[$wikiid][$ns] )
479 $interwiki = Interwiki
::fetch( $wikiid );
480 $wikiid = $interwiki->getWikiID();
481 foreach ( $diffs as $dbk => $id ) {
482 $arr['globaltemplatelinks'][] = array(
483 'gtl_from_wiki' => $wgWikiID,
484 'gtl_from_page' => $this->mId
,
485 'gtl_from_namespace' => $this->mTitle
->getNamespace(),
486 'gtl_from_title' => $this->mTitle
->getText(),
487 'gtl_to_wiki' => $wikiid,
488 'gtl_to_namespace' => $ns,
489 'gtl_to_title' => $dbk
491 $arr['globalinterwiki'][] = array(
492 'giw_wikiid' => $wikiid,
493 'giw_prefix' => $prefix, // FIXME: $prefix ix undefined
495 $arr['globalnamespaces'][] = array(
496 'gn_wiki' => wfWikiID( ),
497 'gn_namespace' => $this->mTitle
->getNamespace(),
498 'gn_namespacetext' => $this->mTitle
->getNsText(),
507 * Get an array of image insertions
508 * Skips the names specified in $existing
511 function getImageInsertions( $existing = array() ) {
513 $diffs = array_diff_key( $this->mImages
, $existing );
514 foreach( $diffs as $iname => $dummy ) {
516 'il_from' => $this->mId
,
524 * Get an array of externallinks insertions. Skips the names specified in $existing
527 function getExternalInsertions( $existing = array() ) {
529 $diffs = array_diff_key( $this->mExternals
, $existing );
530 foreach( $diffs as $url => $dummy ) {
532 'el_from' => $this->mId
,
534 'el_index' => wfMakeUrlIndex( $url ),
541 * Get an array of category insertions
543 * @param $existing Array mapping existing category names to sort keys. If both
544 * match a link in $this, the link will be omitted from the output
547 function getCategoryInsertions( $existing = array() ) {
548 global $wgContLang, $wgCategoryCollation;
549 $diffs = array_diff_assoc( $this->mCategories
, $existing );
551 foreach ( $diffs as $name => $prefix ) {
552 $nt = Title
::makeTitleSafe( NS_CATEGORY
, $name );
553 $wgContLang->findVariantLink( $name, $nt, true );
555 if ( $this->mTitle
->getNamespace() == NS_CATEGORY
) {
557 } elseif ( $this->mTitle
->getNamespace() == NS_FILE
) {
563 # Treat custom sortkeys as a prefix, so that if multiple
564 # things are forced to sort as '*' or something, they'll
565 # sort properly in the category rather than in page_id
567 $sortkey = Collation
::singleton()->getSortKey(
568 $this->mTitle
->getCategorySortkey( $prefix ) );
571 'cl_from' => $this->mId
,
573 'cl_sortkey' => $sortkey,
574 'cl_timestamp' => $this->mDb
->timestamp(),
575 'cl_sortkey_prefix' => $prefix,
576 'cl_collation' => $wgCategoryCollation,
584 * Get an array of interlanguage link insertions
586 * @param $existing Array mapping existing language codes to titles
589 function getInterlangInsertions( $existing = array() ) {
590 $diffs = array_diff_assoc( $this->mInterlangs
, $existing );
592 foreach( $diffs as $lang => $title ) {
594 'll_from' => $this->mId
,
603 * Get an array of page property insertions
605 function getPropertyInsertions( $existing = array() ) {
606 $diffs = array_diff_assoc( $this->mProperties
, $existing );
608 foreach ( $diffs as $name => $value ) {
610 'pp_page' => $this->mId
,
611 'pp_propname' => $name,
612 'pp_value' => $value,
619 * Get an array of interwiki insertions for passing to the DB
620 * Skips the titles specified by the 2-D array $existing
623 function getInterwikiInsertions( $existing = array() ) {
625 foreach( $this->mInterwikis
as $prefix => $dbkeys ) {
626 $diffs = isset( $existing[$prefix] ) ?
array_diff_key( $dbkeys, $existing[$prefix] ) : $dbkeys;
627 foreach ( $diffs as $dbk => $id ) {
629 'iwl_from' => $this->mId
,
630 'iwl_prefix' => $prefix,
639 * Given an array of existing links, returns those links which are not in $this
640 * and thus should be deleted.
643 function getLinkDeletions( $existing ) {
645 foreach ( $existing as $ns => $dbkeys ) {
646 if ( isset( $this->mLinks
[$ns] ) ) {
647 $del[$ns] = array_diff_key( $existing[$ns], $this->mLinks
[$ns] );
649 $del[$ns] = $existing[$ns];
656 * Given an array of existing templates, returns those templates which are not in $this
657 * and thus should be deleted.
660 function getTemplateDeletions( $existing ) {
662 foreach ( $existing as $ns => $dbkeys ) {
663 if ( isset( $this->mTemplates
[$ns] ) ) {
664 $del[$ns] = array_diff_key( $existing[$ns], $this->mTemplates
[$ns] );
666 $del[$ns] = $existing[$ns];
673 * Given an array of existing templates, returns those templates which are not in $this
674 * and thus should be deleted.
677 function getDistantTemplateDeletions( $existing ) {
679 foreach ( $existing as $wikiid => $templatesForNS ) {
680 if ( isset( $this->mDistantTemplates
[$wikiid] ) ) {
681 $del[$wikiid] = array_diff_key( $existing[$wikiid], $this->mDistantTemplates
[$wikiid] );
683 $del[$wikiid] = $existing[$wikiid];
685 foreach ( $templatesForNS as $ns => $dbkeys ) {
686 if ( isset( $this->mDistantTemplates
[$wikiid][$ns] ) ) {
687 $del[$wikiid][$ns] = array_diff_key( $existing[$wikiid][$ns], $this->mDistantTemplates
[$wikiid][$ns] );
689 $del[$wikiid][$ns] = $existing[$wikiid][$ns];
697 * Given an array of existing images, returns those images which are not in $this
698 * and thus should be deleted.
701 function getImageDeletions( $existing ) {
702 return array_diff_key( $existing, $this->mImages
);
706 * Given an array of existing external links, returns those links which are not
707 * in $this and thus should be deleted.
710 function getExternalDeletions( $existing ) {
711 return array_diff_key( $existing, $this->mExternals
);
715 * Given an array of existing categories, returns those categories which are not in $this
716 * and thus should be deleted.
719 function getCategoryDeletions( $existing ) {
720 return array_diff_assoc( $existing, $this->mCategories
);
724 * Given an array of existing interlanguage links, returns those links which are not
725 * in $this and thus should be deleted.
728 function getInterlangDeletions( $existing ) {
729 return array_diff_assoc( $existing, $this->mInterlangs
);
733 * Get array of properties which should be deleted.
736 function getPropertyDeletions( $existing ) {
737 return array_diff_assoc( $existing, $this->mProperties
);
741 * Given an array of existing interwiki links, returns those links which are not in $this
742 * and thus should be deleted.
745 function getInterwikiDeletions( $existing ) {
747 foreach ( $existing as $prefix => $dbkeys ) {
748 if ( isset( $this->mInterwikis
[$prefix] ) ) {
749 $del[$prefix] = array_diff_key( $existing[$prefix], $this->mInterwikis
[$prefix] );
751 $del[$prefix] = $existing[$prefix];
758 * Get an array of existing links, as a 2-D array
761 function getExistingLinks() {
762 $res = $this->mDb
->select( 'pagelinks', array( 'pl_namespace', 'pl_title' ),
763 array( 'pl_from' => $this->mId
), __METHOD__
, $this->mOptions
);
765 foreach ( $res as $row ) {
766 if ( !isset( $arr[$row->pl_namespace
] ) ) {
767 $arr[$row->pl_namespace
] = array();
769 $arr[$row->pl_namespace
][$row->pl_title
] = 1;
775 * Get an array of existing templates, as a 2-D array
778 function getExistingTemplates() {
779 $res = $this->mDb
->select( 'templatelinks', array( 'tl_namespace', 'tl_title' ),
780 array( 'tl_from' => $this->mId
), __METHOD__
, $this->mOptions
);
782 foreach ( $res as $row ) {
783 if ( !isset( $arr[$row->tl_namespace
] ) ) {
784 $arr[$row->tl_namespace
] = array();
786 $arr[$row->tl_namespace
][$row->tl_title
] = 1;
792 * Get an array of existing distant templates, as a 3-D array
795 function getDistantExistingTemplates() {
801 $dbr = wfGetDB( DB_SLAVE
, array(), $wgGlobalDB );
802 $res = $dbr->select( 'globaltemplatelinks', array( 'gtl_to_wiki', 'gtl_to_namespace', 'gtl_to_title' ),
803 array( 'gtl_from_wiki' => $wgWikiID, 'gtl_from_page' => $this->mId
), __METHOD__
, $this->mOptions
);
804 while ( $row = $dbr->fetchObject( $res ) ) {
805 if ( !isset( $arr[$row->gtl_to_wiki
] ) ) {
806 $arr[$row->gtl_to_wiki
] = array();
808 if ( !isset( $arr[$row->gtl_to_wiki
][$row->gtl_to_namespace
] ) ) {
809 $arr[$row->gtl_to_wiki
][$row->gtl_to_namespace
] = array();
811 $arr[$row->gtl_to_wiki
][$row->gtl_to_namespace
][$row->gtl_to_title
] = 1;
813 $dbr->freeResult( $res );
819 * Get an array of existing images, image names in the keys
822 function getExistingImages() {
823 $res = $this->mDb
->select( 'imagelinks', array( 'il_to' ),
824 array( 'il_from' => $this->mId
), __METHOD__
, $this->mOptions
);
826 foreach ( $res as $row ) {
827 $arr[$row->il_to
] = 1;
833 * Get an array of existing external links, URLs in the keys
836 function getExistingExternals() {
837 $res = $this->mDb
->select( 'externallinks', array( 'el_to' ),
838 array( 'el_from' => $this->mId
), __METHOD__
, $this->mOptions
);
840 foreach ( $res as $row ) {
841 $arr[$row->el_to
] = 1;
847 * Get an array of existing categories, with the name in the key and sort key in the value.
850 function getExistingCategories() {
851 $res = $this->mDb
->select( 'categorylinks', array( 'cl_to', 'cl_sortkey_prefix' ),
852 array( 'cl_from' => $this->mId
), __METHOD__
, $this->mOptions
);
854 foreach ( $res as $row ) {
855 $arr[$row->cl_to
] = $row->cl_sortkey_prefix
;
861 * Get an array of existing interlanguage links, with the language code in the key and the
862 * title in the value.
865 function getExistingInterlangs() {
866 $res = $this->mDb
->select( 'langlinks', array( 'll_lang', 'll_title' ),
867 array( 'll_from' => $this->mId
), __METHOD__
, $this->mOptions
);
869 foreach ( $res as $row ) {
870 $arr[$row->ll_lang
] = $row->ll_title
;
876 * Get an array of existing inline interwiki links, as a 2-D array
877 * @return array (prefix => array(dbkey => 1))
879 protected function getExistingInterwikis() {
880 $res = $this->mDb
->select( 'iwlinks', array( 'iwl_prefix', 'iwl_title' ),
881 array( 'iwl_from' => $this->mId
), __METHOD__
, $this->mOptions
);
883 foreach ( $res as $row ) {
884 if ( !isset( $arr[$row->iwl_prefix
] ) ) {
885 $arr[$row->iwl_prefix
] = array();
887 $arr[$row->iwl_prefix
][$row->iwl_title
] = 1;
893 * Get an array of existing categories, with the name in the key and sort key in the value.
896 function getExistingProperties() {
897 $res = $this->mDb
->select( 'page_props', array( 'pp_propname', 'pp_value' ),
898 array( 'pp_page' => $this->mId
), __METHOD__
, $this->mOptions
);
900 foreach ( $res as $row ) {
901 $arr[$row->pp_propname
] = $row->pp_value
;
908 * Return the title object of the page being updated
910 function getTitle() {
911 return $this->mTitle
;
915 * Return the list of images used as generated by the parser
917 public function getImages() {
918 return $this->mImages
;
922 * Invalidate any necessary link lists related to page property changes
924 function invalidateProperties( $changed ) {
925 global $wgPagePropLinkInvalidations;
927 foreach ( $changed as $name => $value ) {
928 if ( isset( $wgPagePropLinkInvalidations[$name] ) ) {
929 $inv = $wgPagePropLinkInvalidations[$name];
930 if ( !is_array( $inv ) ) {
931 $inv = array( $inv );
933 foreach ( $inv as $table ) {
934 $update = new HTMLCacheUpdate( $this->mTitle
, $table );