3 * Updater for link tracking tables after a page edit.
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
24 * See docs/deferred.txt
26 * @todo document (e.g. one-sentence top-level class description).
28 class LinksUpdate
extends SqlDataUpdate
{
29 // @todo make members protected, but make sure extensions don't break
31 /** @var int Page ID of the article linked from */
34 /** @var Title Title object of the article linked from */
37 /** @var ParserOutput */
38 public $mParserOutput;
40 /** @var array Map of title strings to IDs for the links in the document */
43 /** @var array DB keys of the images used, in the array key only */
46 /** @var array Map of title strings to IDs for the template references, including broken ones */
49 /** @var array URLs of external links, array key only */
52 /** @var array Map of category names to sort keys */
55 /** @var array Map of language codes to titles */
58 /** @var array Map of arbitrary name to value */
61 /** @var bool Whether to queue jobs for recursive updates */
64 /** @var bool Whether this job was triggered by a recursive update job */
65 private $mTriggeredRecursive;
67 /** @var Revision Revision for which this update has been triggered */
71 * @var null|array Added links if calculated.
73 private $linkInsertions = null;
76 * @var null|array Deleted links if calculated.
78 private $linkDeletions = null;
83 * @param Title $title Title of the page we're updating
84 * @param ParserOutput $parserOutput Output from a full parse of this page
85 * @param bool $recursive Queue jobs for recursive updates?
88 function __construct( $title, $parserOutput, $recursive = true ) {
89 parent
::__construct( false ); // no implicit transaction
91 if ( !( $title instanceof Title
) ) {
92 throw new MWException( "The calling convention to LinksUpdate::LinksUpdate() has changed. " .
93 "Please see Article::editUpdates() for an invocation example.\n" );
96 if ( !( $parserOutput instanceof ParserOutput
) ) {
97 throw new MWException( "The calling convention to LinksUpdate::__construct() has changed. " .
98 "Please see WikiPage::doEditUpdates() for an invocation example.\n" );
101 $this->mTitle
= $title;
102 $this->mId
= $title->getArticleID();
105 throw new MWException( "The Title object did not provide an article " .
106 "ID. Perhaps the page doesn't exist?" );
109 $this->mParserOutput
= $parserOutput;
111 $this->mLinks
= $parserOutput->getLinks();
112 $this->mImages
= $parserOutput->getImages();
113 $this->mTemplates
= $parserOutput->getTemplates();
114 $this->mExternals
= $parserOutput->getExternalLinks();
115 $this->mCategories
= $parserOutput->getCategories();
116 $this->mProperties
= $parserOutput->getProperties();
117 $this->mInterwikis
= $parserOutput->getInterwikiLinks();
119 # Convert the format of the interlanguage links
120 # I didn't want to change it in the ParserOutput, because that array is passed all
121 # the way back to the skin, so either a skin API break would be required, or an
122 # inefficient back-conversion.
123 $ill = $parserOutput->getLanguageLinks();
124 $this->mInterlangs
= array();
125 foreach ( $ill as $link ) {
126 list( $key, $title ) = explode( ':', $link, 2 );
127 $this->mInterlangs
[$key] = $title;
130 foreach ( $this->mCategories
as &$sortkey ) {
131 # If the sortkey is longer then 255 bytes,
132 # it truncated by DB, and then doesn't get
133 # matched when comparing existing vs current
134 # categories, causing bug 25254.
135 # Also. substr behaves weird when given "".
136 if ( $sortkey !== '' ) {
137 $sortkey = substr( $sortkey, 0, 255 );
141 $this->mRecursive
= $recursive;
143 Hooks
::run( 'LinksUpdateConstructed', array( &$this ) );
147 * Update link tables with outgoing links from an updated article
149 public function doUpdate() {
150 Hooks
::run( 'LinksUpdate', array( &$this ) );
151 $this->doIncrementalUpdate();
152 Hooks
::run( 'LinksUpdateComplete', array( &$this ) );
155 protected function doIncrementalUpdate() {
157 $existing = $this->getExistingLinks();
158 $this->linkDeletions
= $this->getLinkDeletions( $existing );
159 $this->linkInsertions
= $this->getLinkInsertions( $existing );
160 $this->incrTableUpdate( 'pagelinks', 'pl', $this->linkDeletions
, $this->linkInsertions
);
163 $existing = $this->getExistingImages();
165 $imageDeletes = $this->getImageDeletions( $existing );
166 $this->incrTableUpdate( 'imagelinks', 'il', $imageDeletes,
167 $this->getImageInsertions( $existing ) );
169 # Invalidate all image description pages which had links added or removed
170 $imageUpdates = $imageDeletes +
array_diff_key( $this->mImages
, $existing );
171 $this->invalidateImageDescriptions( $imageUpdates );
174 $existing = $this->getExistingExternals();
175 $this->incrTableUpdate( 'externallinks', 'el', $this->getExternalDeletions( $existing ),
176 $this->getExternalInsertions( $existing ) );
179 $existing = $this->getExistingInterlangs();
180 $this->incrTableUpdate( 'langlinks', 'll', $this->getInterlangDeletions( $existing ),
181 $this->getInterlangInsertions( $existing ) );
183 # Inline interwiki links
184 $existing = $this->getExistingInterwikis();
185 $this->incrTableUpdate( 'iwlinks', 'iwl', $this->getInterwikiDeletions( $existing ),
186 $this->getInterwikiInsertions( $existing ) );
189 $existing = $this->getExistingTemplates();
190 $this->incrTableUpdate( 'templatelinks', 'tl', $this->getTemplateDeletions( $existing ),
191 $this->getTemplateInsertions( $existing ) );
194 $existing = $this->getExistingCategories();
196 $categoryDeletes = $this->getCategoryDeletions( $existing );
198 $this->incrTableUpdate( 'categorylinks', 'cl', $categoryDeletes,
199 $this->getCategoryInsertions( $existing ) );
201 # Invalidate all categories which were added, deleted or changed (set symmetric difference)
202 $categoryInserts = array_diff_assoc( $this->mCategories
, $existing );
203 $categoryUpdates = $categoryInserts +
$categoryDeletes;
204 $this->invalidateCategories( $categoryUpdates );
205 $this->updateCategoryCounts( $categoryInserts, $categoryDeletes );
207 # Category membership changes
208 if ( !$this->mTriggeredRecursive
&& ( $categoryInserts ||
$categoryDeletes ) ) {
210 $catMembChange = new CategoryMembershipChange( $this->mTitle
, $this->mRevision
);
212 if ( $this->mRecursive
) {
213 $catMembChange->setRecursive();
216 foreach ( $categoryInserts as $categoryName => $value ) {
217 $catMembChange->pageAddedToCategory( $categoryName );
220 foreach ( $categoryDeletes as $categoryName => $value ) {
221 $catMembChange->pageRemovedFromCategory( $categoryName );
223 } catch ( MWException
$e ) {
224 MWExceptionHandler
::logException( $e );
229 $existing = $this->getExistingProperties();
231 $propertiesDeletes = $this->getPropertyDeletions( $existing );
233 $this->incrTableUpdate( 'page_props', 'pp', $propertiesDeletes,
234 $this->getPropertyInsertions( $existing ) );
236 # Invalidate the necessary pages
237 $changed = $propertiesDeletes +
array_diff_assoc( $this->mProperties
, $existing );
238 $this->invalidateProperties( $changed );
240 # Update the links table freshness for this title
241 $this->updateLinksTimestamp();
243 # Refresh links of all pages including this page
244 # This will be in a separate transaction
245 if ( $this->mRecursive
) {
246 $this->queueRecursiveJobs();
252 * Queue recursive jobs for this page
254 * Which means do LinksUpdate on all pages that include the current page,
255 * using the job queue.
257 protected function queueRecursiveJobs() {
258 self
::queueRecursiveJobsForTable( $this->mTitle
, 'templatelinks' );
259 if ( $this->mTitle
->getNamespace() == NS_FILE
) {
260 // Process imagelinks in case the title is or was a redirect
261 self
::queueRecursiveJobsForTable( $this->mTitle
, 'imagelinks' );
264 $bc = $this->mTitle
->getBacklinkCache();
265 // Get jobs for cascade-protected backlinks for a high priority queue.
266 // If meta-templates change to using a new template, the new template
267 // should be implicitly protected as soon as possible, if applicable.
268 // These jobs duplicate a subset of the above ones, but can run sooner.
269 // Which ever runs first generally no-ops the other one.
271 foreach ( $bc->getCascadeProtectedLinks() as $title ) {
272 $jobs[] = new RefreshLinksJob( $title, array( 'prioritize' => true ) );
274 JobQueueGroup
::singleton()->push( $jobs );
278 * Queue a RefreshLinks job for any table.
280 * @param Title $title Title to do job for
281 * @param string $table Table to use (e.g. 'templatelinks')
283 public static function queueRecursiveJobsForTable( Title
$title, $table ) {
284 if ( $title->getBacklinkCache()->hasLinks( $table ) ) {
285 $job = new RefreshLinksJob(
290 ) + Job
::newRootJobParams( // "overall" refresh links job info
291 "refreshlinks:{$table}:{$title->getPrefixedText()}"
295 JobQueueGroup
::singleton()->push( $job );
302 function invalidateCategories( $cats ) {
303 $this->invalidatePages( NS_CATEGORY
, array_keys( $cats ) );
307 * Update all the appropriate counts in the category table.
308 * @param array $added Associative array of category name => sort key
309 * @param array $deleted Associative array of category name => sort key
311 function updateCategoryCounts( $added, $deleted ) {
312 $a = WikiPage
::factory( $this->mTitle
);
313 $a->updateCategoryCounts(
314 array_keys( $added ), array_keys( $deleted )
319 * @param array $images
321 function invalidateImageDescriptions( $images ) {
322 $this->invalidatePages( NS_FILE
, array_keys( $images ) );
326 * Update a table by doing a delete query then an insert query
327 * @param string $table Table name
328 * @param string $prefix Field name prefix
329 * @param array $deletions
330 * @param array $insertions Rows to insert
332 function incrTableUpdate( $table, $prefix, $deletions, $insertions ) {
333 if ( $table == 'page_props' ) {
334 $fromField = 'pp_page';
336 $fromField = "{$prefix}_from";
338 $where = array( $fromField => $this->mId
);
339 if ( $table == 'pagelinks' ||
$table == 'templatelinks' ||
$table == 'iwlinks' ) {
340 if ( $table == 'iwlinks' ) {
341 $baseKey = 'iwl_prefix';
343 $baseKey = "{$prefix}_namespace";
345 $clause = $this->mDb
->makeWhereFrom2d( $deletions, $baseKey, "{$prefix}_title" );
352 if ( $table == 'langlinks' ) {
353 $toField = 'll_lang';
354 } elseif ( $table == 'page_props' ) {
355 $toField = 'pp_propname';
357 $toField = $prefix . '_to';
359 if ( count( $deletions ) ) {
360 $where[$toField] = array_keys( $deletions );
366 $this->mDb
->delete( $table, $where, __METHOD__
);
368 if ( count( $insertions ) ) {
369 $this->mDb
->insert( $table, $insertions, __METHOD__
, 'IGNORE' );
370 Hooks
::run( 'LinksUpdateAfterInsert', array( $this, $table, $insertions ) );
375 * Get an array of pagelinks insertions for passing to the DB
376 * Skips the titles specified by the 2-D array $existing
377 * @param array $existing
380 private function getLinkInsertions( $existing = array() ) {
382 foreach ( $this->mLinks
as $ns => $dbkeys ) {
383 $diffs = isset( $existing[$ns] )
384 ?
array_diff_key( $dbkeys, $existing[$ns] )
386 foreach ( $diffs as $dbk => $id ) {
388 'pl_from' => $this->mId
,
389 'pl_from_namespace' => $this->mTitle
->getNamespace(),
390 'pl_namespace' => $ns,
400 * Get an array of template insertions. Like getLinkInsertions()
401 * @param array $existing
404 private function getTemplateInsertions( $existing = array() ) {
406 foreach ( $this->mTemplates
as $ns => $dbkeys ) {
407 $diffs = isset( $existing[$ns] ) ?
array_diff_key( $dbkeys, $existing[$ns] ) : $dbkeys;
408 foreach ( $diffs as $dbk => $id ) {
410 'tl_from' => $this->mId
,
411 'tl_from_namespace' => $this->mTitle
->getNamespace(),
412 'tl_namespace' => $ns,
422 * Get an array of image insertions
423 * Skips the names specified in $existing
424 * @param array $existing
427 private function getImageInsertions( $existing = array() ) {
429 $diffs = array_diff_key( $this->mImages
, $existing );
430 foreach ( $diffs as $iname => $dummy ) {
432 'il_from' => $this->mId
,
433 'il_from_namespace' => $this->mTitle
->getNamespace(),
442 * Get an array of externallinks insertions. Skips the names specified in $existing
443 * @param array $existing
446 private function getExternalInsertions( $existing = array() ) {
448 $diffs = array_diff_key( $this->mExternals
, $existing );
449 foreach ( $diffs as $url => $dummy ) {
450 foreach ( wfMakeUrlIndexes( $url ) as $index ) {
452 'el_id' => $this->mDb
->nextSequenceValue( 'externallinks_el_id_seq' ),
453 'el_from' => $this->mId
,
455 'el_index' => $index,
464 * Get an array of category insertions
466 * @param array $existing Mapping existing category names to sort keys. If both
467 * match a link in $this, the link will be omitted from the output
471 private function getCategoryInsertions( $existing = array() ) {
472 global $wgContLang, $wgCategoryCollation;
473 $diffs = array_diff_assoc( $this->mCategories
, $existing );
475 foreach ( $diffs as $name => $prefix ) {
476 $nt = Title
::makeTitleSafe( NS_CATEGORY
, $name );
477 $wgContLang->findVariantLink( $name, $nt, true );
479 if ( $this->mTitle
->getNamespace() == NS_CATEGORY
) {
481 } elseif ( $this->mTitle
->getNamespace() == NS_FILE
) {
487 # Treat custom sortkeys as a prefix, so that if multiple
488 # things are forced to sort as '*' or something, they'll
489 # sort properly in the category rather than in page_id
491 $sortkey = Collation
::singleton()->getSortKey(
492 $this->mTitle
->getCategorySortkey( $prefix ) );
495 'cl_from' => $this->mId
,
497 'cl_sortkey' => $sortkey,
498 'cl_timestamp' => $this->mDb
->timestamp(),
499 'cl_sortkey_prefix' => $prefix,
500 'cl_collation' => $wgCategoryCollation,
509 * Get an array of interlanguage link insertions
511 * @param array $existing Mapping existing language codes to titles
515 private function getInterlangInsertions( $existing = array() ) {
516 $diffs = array_diff_assoc( $this->mInterlangs
, $existing );
518 foreach ( $diffs as $lang => $title ) {
520 'll_from' => $this->mId
,
530 * Get an array of page property insertions
531 * @param array $existing
534 function getPropertyInsertions( $existing = array() ) {
535 $diffs = array_diff_assoc( $this->mProperties
, $existing );
538 foreach ( array_keys( $diffs ) as $name ) {
539 $arr[] = $this->getPagePropRowData( $name );
546 * Returns an associative array to be used for inserting a row into
547 * the page_props table. Besides the given property name, this will
548 * include the page id from $this->mId and any property value from
549 * $this->mProperties.
551 * The array returned will include the pp_sortkey field if this
552 * is present in the database (as indicated by $wgPagePropsHaveSortkey).
553 * The sortkey value is currently determined by getPropertySortKeyValue().
555 * @note this assumes that $this->mProperties[$prop] is defined.
557 * @param string $prop The name of the property.
561 private function getPagePropRowData( $prop ) {
562 global $wgPagePropsHaveSortkey;
564 $value = $this->mProperties
[$prop];
567 'pp_page' => $this->mId
,
568 'pp_propname' => $prop,
569 'pp_value' => $value,
572 if ( $wgPagePropsHaveSortkey ) {
573 $row['pp_sortkey'] = $this->getPropertySortKeyValue( $value );
580 * Determines the sort key for the given property value.
581 * This will return $value if it is a float or int,
582 * 1 or resp. 0 if it is a bool, and null otherwise.
584 * @note In the future, we may allow the sortkey to be specified explicitly
585 * in ParserOutput::setProperty.
587 * @param mixed $value
591 private function getPropertySortKeyValue( $value ) {
592 if ( is_int( $value ) ||
is_float( $value ) ||
is_bool( $value ) ) {
593 return floatval( $value );
600 * Get an array of interwiki insertions for passing to the DB
601 * Skips the titles specified by the 2-D array $existing
602 * @param array $existing
605 private function getInterwikiInsertions( $existing = array() ) {
607 foreach ( $this->mInterwikis
as $prefix => $dbkeys ) {
608 $diffs = isset( $existing[$prefix] )
609 ?
array_diff_key( $dbkeys, $existing[$prefix] )
612 foreach ( $diffs as $dbk => $id ) {
614 'iwl_from' => $this->mId
,
615 'iwl_prefix' => $prefix,
625 * Given an array of existing links, returns those links which are not in $this
626 * and thus should be deleted.
627 * @param array $existing
630 private function getLinkDeletions( $existing ) {
632 foreach ( $existing as $ns => $dbkeys ) {
633 if ( isset( $this->mLinks
[$ns] ) ) {
634 $del[$ns] = array_diff_key( $existing[$ns], $this->mLinks
[$ns] );
636 $del[$ns] = $existing[$ns];
644 * Given an array of existing templates, returns those templates which are not in $this
645 * and thus should be deleted.
646 * @param array $existing
649 private function getTemplateDeletions( $existing ) {
651 foreach ( $existing as $ns => $dbkeys ) {
652 if ( isset( $this->mTemplates
[$ns] ) ) {
653 $del[$ns] = array_diff_key( $existing[$ns], $this->mTemplates
[$ns] );
655 $del[$ns] = $existing[$ns];
663 * Given an array of existing images, returns those images which are not in $this
664 * and thus should be deleted.
665 * @param array $existing
668 private function getImageDeletions( $existing ) {
669 return array_diff_key( $existing, $this->mImages
);
673 * Given an array of existing external links, returns those links which are not
674 * in $this and thus should be deleted.
675 * @param array $existing
678 private function getExternalDeletions( $existing ) {
679 return array_diff_key( $existing, $this->mExternals
);
683 * Given an array of existing categories, returns those categories which are not in $this
684 * and thus should be deleted.
685 * @param array $existing
688 private function getCategoryDeletions( $existing ) {
689 return array_diff_assoc( $existing, $this->mCategories
);
693 * Given an array of existing interlanguage links, returns those links which are not
694 * in $this and thus should be deleted.
695 * @param array $existing
698 private function getInterlangDeletions( $existing ) {
699 return array_diff_assoc( $existing, $this->mInterlangs
);
703 * Get array of properties which should be deleted.
704 * @param array $existing
707 function getPropertyDeletions( $existing ) {
708 return array_diff_assoc( $existing, $this->mProperties
);
712 * Given an array of existing interwiki links, returns those links which are not in $this
713 * and thus should be deleted.
714 * @param array $existing
717 private function getInterwikiDeletions( $existing ) {
719 foreach ( $existing as $prefix => $dbkeys ) {
720 if ( isset( $this->mInterwikis
[$prefix] ) ) {
721 $del[$prefix] = array_diff_key( $existing[$prefix], $this->mInterwikis
[$prefix] );
723 $del[$prefix] = $existing[$prefix];
731 * Get an array of existing links, as a 2-D array
735 private function getExistingLinks() {
736 $res = $this->mDb
->select( 'pagelinks', array( 'pl_namespace', 'pl_title' ),
737 array( 'pl_from' => $this->mId
), __METHOD__
, $this->mOptions
);
739 foreach ( $res as $row ) {
740 if ( !isset( $arr[$row->pl_namespace
] ) ) {
741 $arr[$row->pl_namespace
] = array();
743 $arr[$row->pl_namespace
][$row->pl_title
] = 1;
750 * Get an array of existing templates, as a 2-D array
754 private function getExistingTemplates() {
755 $res = $this->mDb
->select( 'templatelinks', array( 'tl_namespace', 'tl_title' ),
756 array( 'tl_from' => $this->mId
), __METHOD__
, $this->mOptions
);
758 foreach ( $res as $row ) {
759 if ( !isset( $arr[$row->tl_namespace
] ) ) {
760 $arr[$row->tl_namespace
] = array();
762 $arr[$row->tl_namespace
][$row->tl_title
] = 1;
769 * Get an array of existing images, image names in the keys
773 private function getExistingImages() {
774 $res = $this->mDb
->select( 'imagelinks', array( 'il_to' ),
775 array( 'il_from' => $this->mId
), __METHOD__
, $this->mOptions
);
777 foreach ( $res as $row ) {
778 $arr[$row->il_to
] = 1;
785 * Get an array of existing external links, URLs in the keys
789 private function getExistingExternals() {
790 $res = $this->mDb
->select( 'externallinks', array( 'el_to' ),
791 array( 'el_from' => $this->mId
), __METHOD__
, $this->mOptions
);
793 foreach ( $res as $row ) {
794 $arr[$row->el_to
] = 1;
801 * Get an array of existing categories, with the name in the key and sort key in the value.
805 private function getExistingCategories() {
806 $res = $this->mDb
->select( 'categorylinks', array( 'cl_to', 'cl_sortkey_prefix' ),
807 array( 'cl_from' => $this->mId
), __METHOD__
, $this->mOptions
);
809 foreach ( $res as $row ) {
810 $arr[$row->cl_to
] = $row->cl_sortkey_prefix
;
817 * Get an array of existing interlanguage links, with the language code in the key and the
818 * title in the value.
822 private function getExistingInterlangs() {
823 $res = $this->mDb
->select( 'langlinks', array( 'll_lang', 'll_title' ),
824 array( 'll_from' => $this->mId
), __METHOD__
, $this->mOptions
);
826 foreach ( $res as $row ) {
827 $arr[$row->ll_lang
] = $row->ll_title
;
834 * Get an array of existing inline interwiki links, as a 2-D array
835 * @return array (prefix => array(dbkey => 1))
837 protected function getExistingInterwikis() {
838 $res = $this->mDb
->select( 'iwlinks', array( 'iwl_prefix', 'iwl_title' ),
839 array( 'iwl_from' => $this->mId
), __METHOD__
, $this->mOptions
);
841 foreach ( $res as $row ) {
842 if ( !isset( $arr[$row->iwl_prefix
] ) ) {
843 $arr[$row->iwl_prefix
] = array();
845 $arr[$row->iwl_prefix
][$row->iwl_title
] = 1;
852 * Get an array of existing categories, with the name in the key and sort key in the value.
854 * @return array Array of property names and values
856 private function getExistingProperties() {
857 $res = $this->mDb
->select( 'page_props', array( 'pp_propname', 'pp_value' ),
858 array( 'pp_page' => $this->mId
), __METHOD__
, $this->mOptions
);
860 foreach ( $res as $row ) {
861 $arr[$row->pp_propname
] = $row->pp_value
;
868 * Return the title object of the page being updated
871 public function getTitle() {
872 return $this->mTitle
;
876 * Returns parser output
878 * @return ParserOutput
880 public function getParserOutput() {
881 return $this->mParserOutput
;
885 * Return the list of images used as generated by the parser
888 public function getImages() {
889 return $this->mImages
;
893 * Set this object as being triggered by a recursive LinksUpdate
895 public function setTriggeredRecursive() {
896 $this->mTriggeredRecursive
= true;
900 * Set the revision corresponding to this LinksUpdate
901 * @param Revision $revision
903 public function setRevision( Revision
$revision ) {
904 $this->mRevision
= $revision;
908 * Invalidate any necessary link lists related to page property changes
909 * @param array $changed
911 private function invalidateProperties( $changed ) {
912 global $wgPagePropLinkInvalidations;
914 foreach ( $changed as $name => $value ) {
915 if ( isset( $wgPagePropLinkInvalidations[$name] ) ) {
916 $inv = $wgPagePropLinkInvalidations[$name];
917 if ( !is_array( $inv ) ) {
918 $inv = array( $inv );
920 foreach ( $inv as $table ) {
921 $update = new HTMLCacheUpdate( $this->mTitle
, $table );
929 * Fetch page links added by this LinksUpdate. Only available after the update is complete.
931 * @return null|array Array of Titles
933 public function getAddedLinks() {
934 if ( $this->linkInsertions
=== null ) {
938 foreach ( $this->linkInsertions
as $insertion ) {
939 $result[] = Title
::makeTitle( $insertion['pl_namespace'], $insertion['pl_title'] );
946 * Fetch page links removed by this LinksUpdate. Only available after the update is complete.
948 * @return null|array Array of Titles
950 public function getRemovedLinks() {
951 if ( $this->linkDeletions
=== null ) {
955 foreach ( $this->linkDeletions
as $ns => $titles ) {
956 foreach ( $titles as $title => $unused ) {
957 $result[] = Title
::makeTitle( $ns, $title );
965 * Update links table freshness
967 protected function updateLinksTimestamp() {
969 // The link updates made here only reflect the freshness of the parser output
970 $timestamp = $this->mParserOutput
->getCacheTime();
971 $this->mDb
->update( 'page',
972 array( 'page_links_updated' => $this->mDb
->timestamp( $timestamp ) ),
973 array( 'page_id' => $this->mId
),
981 * Update object handling the cleanup of links tables after a page was deleted.
983 class LinksDeletionUpdate
extends SqlDataUpdate
{
984 /** @var WikiPage The WikiPage that was deleted */
990 * @param WikiPage $page Page we are updating
991 * @throws MWException
993 function __construct( WikiPage
$page ) {
994 parent
::__construct( false ); // no implicit transaction
996 $this->mPage
= $page;
998 if ( !$page->exists() ) {
999 throw new MWException( "Page ID not known, perhaps the page doesn't exist?" );
1004 * Do some database updates after deletion
1006 public function doUpdate() {
1007 $title = $this->mPage
->getTitle();
1008 $id = $this->mPage
->getId();
1010 # Delete restrictions for it
1011 $this->mDb
->delete( 'page_restrictions', array( 'pr_page' => $id ), __METHOD__
);
1013 # Fix category table counts
1015 $res = $this->mDb
->select( 'categorylinks', 'cl_to', array( 'cl_from' => $id ), __METHOD__
);
1017 foreach ( $res as $row ) {
1018 $cats[] = $row->cl_to
;
1021 $this->mPage
->updateCategoryCounts( array(), $cats );
1023 # If using cascading deletes, we can skip some explicit deletes
1024 if ( !$this->mDb
->cascadingDeletes() ) {
1025 # Delete outgoing links
1026 $this->mDb
->delete( 'pagelinks', array( 'pl_from' => $id ), __METHOD__
);
1027 $this->mDb
->delete( 'imagelinks', array( 'il_from' => $id ), __METHOD__
);
1028 $this->mDb
->delete( 'categorylinks', array( 'cl_from' => $id ), __METHOD__
);
1029 $this->mDb
->delete( 'templatelinks', array( 'tl_from' => $id ), __METHOD__
);
1030 $this->mDb
->delete( 'externallinks', array( 'el_from' => $id ), __METHOD__
);
1031 $this->mDb
->delete( 'langlinks', array( 'll_from' => $id ), __METHOD__
);
1032 $this->mDb
->delete( 'iwlinks', array( 'iwl_from' => $id ), __METHOD__
);
1033 $this->mDb
->delete( 'redirect', array( 'rd_from' => $id ), __METHOD__
);
1034 $this->mDb
->delete( 'page_props', array( 'pp_page' => $id ), __METHOD__
);
1037 # If using cleanup triggers, we can skip some manual deletes
1038 if ( !$this->mDb
->cleanupTriggers() ) {
1039 # Find recentchanges entries to clean up...
1040 $rcIdsForTitle = $this->mDb
->selectFieldValues( 'recentchanges',
1043 'rc_type != ' . RC_LOG
,
1044 'rc_namespace' => $title->getNamespace(),
1045 'rc_title' => $title->getDBkey()
1049 $rcIdsForPage = $this->mDb
->selectFieldValues( 'recentchanges',
1051 array( 'rc_type != ' . RC_LOG
, 'rc_cur_id' => $id ),
1055 # T98706: delete PK to avoid lock contention with RC delete log insertions
1056 $rcIds = array_merge( $rcIdsForTitle, $rcIdsForPage );
1058 $this->mDb
->delete( 'recentchanges', array( 'rc_id' => $rcIds ), __METHOD__
);
1064 * Update all the appropriate counts in the category table.
1065 * @param array $added Associative array of category name => sort key
1066 * @param array $deleted Associative array of category name => sort key
1068 function updateCategoryCounts( $added, $deleted ) {
1069 $a = WikiPage
::factory( $this->mTitle
);
1070 $a->updateCategoryCounts(
1071 array_keys( $added ), array_keys( $deleted )