<?php
/**
- * See docs/deferred.txt
+ * Updater for link tracking tables after a page edit.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
+ * @file
+ */
+
+/**
+ * See docs/deferred.txt
+ *
* @todo document (e.g. one-sentence top-level class description).
*/
-class LinksUpdate extends SecondaryDBDataUpdate {
+class LinksUpdate extends SqlDataUpdate {
- /**@{{
- * @private
- */
- var $mId, //!< Page ID of the article linked from
- $mTitle, //!< Title object of the article linked from
- $mParserOutput, //!< Whether to queue jobs for recursive update
- $mLinks, //!< Map of title strings to IDs for the links in the document
+ // @todo: make members protected, but make sure extensions don't break
+
+ public $mId, //!< Page ID of the article linked from
+ $mTitle, //!< Title object of the article linked from
+ $mParserOutput, //!< Parser output
+ $mLinks, //!< Map of title strings to IDs for the links in the document
$mImages, //!< DB keys of the images used, in the array key only
$mTemplates, //!< Map of title strings to IDs for the template references, including broken ones
$mExternals, //!< URLs of external links, array key only
$mInterlangs, //!< Map of language codes to titles
$mProperties, //!< Map of arbitrary name to value
$mRecursive; //!< Whether to queue jobs for recursive updates
- /**@}}*/
/**
* Constructor
* @param $recursive Boolean: queue jobs for recursive updates?
*/
function __construct( $title, $parserOutput, $recursive = true ) {
- parent::__construct( );
+ parent::__construct( );
- if ( !is_object( $title ) ) {
- throw new MWException( "The calling convention to LinksUpdate::LinksUpdate() has changed. " .
- "Please see Article::editUpdates() for an invocation example.\n" );
- }
+ if ( !( $title instanceof Title ) ) {
+ throw new MWException( "The calling convention to LinksUpdate::LinksUpdate() has changed. " .
+ "Please see Article::editUpdates() for an invocation example.\n" );
+ }
- if ( !is_object( $title ) ) {
- throw new MWException( "The calling convention to LinksUpdate::__construct() has changed. " .
+ if ( !( $parserOutput instanceof ParserOutput ) ) {
+ throw new MWException( "The calling convention to LinksUpdate::__construct() has changed. " .
"Please see WikiPage::doEditUpdates() for an invocation example.\n" );
- }
- $this->mTitle = $title;
- $this->mId = $title->getArticleID();
+ }
+
+ $this->mTitle = $title;
+ $this->mId = $title->getArticleID();
+
+ if ( !$this->mId ) {
+ throw new MWException( "The Title object did not provide an article ID. Perhaps the page doesn't exist?" );
+ }
- $this->mParserOutput = $parserOutput;
+ $this->mParserOutput = $parserOutput;
$this->mLinks = $parserOutput->getLinks();
$this->mImages = $parserOutput->getImages();
$this->invalidatePages( NS_FILE, array_keys( $images ) );
}
- /**
- * @param $table
- * @param $insertions
- * @param $fromField
- */
- private function dumbTableUpdate( $table, $insertions, $fromField ) {
- $this->mDb->delete( $table, array( $fromField => $this->mId ), __METHOD__ );
- if ( count( $insertions ) ) {
- # The link array was constructed without FOR UPDATE, so there may
- # be collisions. This may cause minor link table inconsistencies,
- # which is better than crippling the site with lock contention.
- $this->mDb->insert( $table, $insertions, __METHOD__, array( 'IGNORE' ) );
- }
- }
+ /**
+ * @param $table
+ * @param $insertions
+ * @param $fromField
+ */
+ private function dumbTableUpdate( $table, $insertions, $fromField ) {
+ $this->mDb->delete( $table, array( $fromField => $this->mId ), __METHOD__ );
+ if ( count( $insertions ) ) {
+ # The link array was constructed without FOR UPDATE, so there may
+ # be collisions. This may cause minor link table inconsistencies,
+ # which is better than crippling the site with lock contention.
+ $this->mDb->insert( $table, $insertions, __METHOD__, array( 'IGNORE' ) );
+ }
+ }
/**
* Update a table by doing a delete query then an insert query
return $arr;
}
- /**
- * Return the title object of the page being updated
- * @return Title
- */
- public function getTitle() {
- return $this->mTitle;
- }
+ /**
+ * Return the title object of the page being updated
+ * @return Title
+ */
+ public function getTitle() {
+ return $this->mTitle;
+ }
- /**
- * Returns parser output
- * @since 1.19
- * @return ParserOutput
- */
- public function getParserOutput() {
- return $this->mParserOutput;
- }
+ /**
+ * Returns parser output
+ * @since 1.19
+ * @return ParserOutput
+ */
+ public function getParserOutput() {
+ return $this->mParserOutput;
+ }
/**
* Return the list of images used as generated by the parser
}
}
}
+
+/**
+ * Update object handling the cleanup of links tables after a page was deleted.
+ **/
+class LinksDeletionUpdate extends SqlDataUpdate {
+
+ protected $mTitle; //!< Title the title of page that was deleted
+
+ /**
+ * Constructor
+ *
+ * @param $title Title of the page we're updating
+ * @param $parserOutput ParserOutput: output from a full parse of this page
+ * @param $recursive Boolean: queue jobs for recursive updates?
+ */
+ function __construct( Title $title ) {
+ parent::__construct( );
+
+ $this->mTitle = $title;
+
+ if ( !$title->getArticleID() ) {
+ throw new MWException( "The Title object did not provide an article ID. Perhaps the page doesn't exist?" );
+ }
+ }
+
+ /**
+ * Do some database updates after deletion
+ */
+ public function doUpdate() {
+ $title = $this->mTitle;
+ $id = $title->getArticleID();
+
+ # Delete restrictions for it
+ $this->mDb->delete( 'page_restrictions', array ( 'pr_page' => $id ), __METHOD__ );
+
+ # Fix category table counts
+ $cats = array();
+ $res = $this->mDb->select( 'categorylinks', 'cl_to', array( 'cl_from' => $id ), __METHOD__ );
+
+ foreach ( $res as $row ) {
+ $cats [] = $row->cl_to;
+ }
+
+ $this->updateCategoryCounts( array(), $cats );
+
+ # If using cascading deletes, we can skip some explicit deletes
+ if ( !$this->mDb->cascadingDeletes() ) {
+ $this->mDb->delete( 'revision', array( 'rev_page' => $id ), __METHOD__ );
+
+ # Delete outgoing links
+ $this->mDb->delete( 'pagelinks', array( 'pl_from' => $id ), __METHOD__ );
+ $this->mDb->delete( 'imagelinks', array( 'il_from' => $id ), __METHOD__ );
+ $this->mDb->delete( 'categorylinks', array( 'cl_from' => $id ), __METHOD__ );
+ $this->mDb->delete( 'templatelinks', array( 'tl_from' => $id ), __METHOD__ );
+ $this->mDb->delete( 'externallinks', array( 'el_from' => $id ), __METHOD__ );
+ $this->mDb->delete( 'langlinks', array( 'll_from' => $id ), __METHOD__ );
+ $this->mDb->delete( 'iwlinks', array( 'iwl_from' => $id ), __METHOD__ );
+ $this->mDb->delete( 'redirect', array( 'rd_from' => $id ), __METHOD__ );
+ $this->mDb->delete( 'page_props', array( 'pp_page' => $id ), __METHOD__ );
+ }
+
+ # If using cleanup triggers, we can skip some manual deletes
+ if ( !$this->mDb->cleanupTriggers() ) {
+ # Clean up recentchanges entries...
+ $this->mDb->delete( 'recentchanges',
+ array( 'rc_type != ' . RC_LOG,
+ 'rc_namespace' => $title->getNamespace(),
+ 'rc_title' => $title->getDBkey() ),
+ __METHOD__ );
+ $this->mDb->delete( 'recentchanges',
+ array( 'rc_type != ' . RC_LOG, 'rc_cur_id' => $id ),
+ __METHOD__ );
+ }
+ }
+
+ /**
+ * Update all the appropriate counts in the category table.
+ * @param $added array associative array of category name => sort key
+ * @param $deleted array associative array of category name => sort key
+ */
+ function updateCategoryCounts( $added, $deleted ) {
+ $a = WikiPage::factory( $this->mTitle );
+ $a->updateCategoryCounts(
+ array_keys( $added ), array_keys( $deleted )
+ );
+ }
+}
dépôts / lhc / web / wiklou.git / blobdiff