54d4315be6
This removes static logic from WatchedItem into a class that we can slowly fill with watchlist database and storage things. This also removes the dual namespace handling in the new implementation. Change-Id: Ia67ab1d200ac393c65013b2091e61acefcb3defb
86 lines
1.9 KiB
PHP
86 lines
1.9 KiB
PHP
<?php
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/**
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* Storage layer class for WatchedItems.
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* Database interaction
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*
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* @author Addshore
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*
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* @since 1.27
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*/
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class WatchedItemStore {
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/**
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* @var LoadBalancer
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*/
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private $loadBalancer;
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public function __construct( LoadBalancer $loadBalancer ) {
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$this->loadBalancer = $loadBalancer;
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}
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/**
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* @return self
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*/
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public static function getDefaultInstance() {
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static $instance;
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if ( !$instance ) {
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$instance = new self( wfGetLB() );
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}
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return $instance;
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}
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/**
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* Check if the given title already is watched by the user, and if so
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* add a watch for the new title.
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*
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* To be used for page renames and such.
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* This must be called separately for Subject and Talk pages
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*
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* @param LinkTarget $oldTarget
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* @param LinkTarget $newTarget
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*/
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public function duplicateEntry( LinkTarget $oldTarget, LinkTarget $newTarget ) {
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$dbw = $this->loadBalancer->getConnection( DB_MASTER, [ 'watchlist' ] );
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$result = $dbw->select(
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'watchlist',
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[ 'wl_user', 'wl_notificationtimestamp' ],
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[
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'wl_namespace' => $oldTarget->getNamespace(),
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'wl_title' => $oldTarget->getDBkey(),
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],
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__METHOD__,
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[ 'FOR UPDATE' ]
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);
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$newNamespace = $newTarget->getNamespace();
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$newDBkey = $newTarget->getDBkey();
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# Construct array to replace into the watchlist
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$values = [];
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foreach ( $result as $row ) {
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$values[] = [
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'wl_user' => $row->wl_user,
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'wl_namespace' => $newNamespace,
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'wl_title' => $newDBkey,
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'wl_notificationtimestamp' => $row->wl_notificationtimestamp,
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];
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}
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if ( !empty( $values ) ) {
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# Perform replace
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# Note that multi-row replace is very efficient for MySQL but may be inefficient for
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# some other DBMSes, mostly due to poor simulation by us
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$dbw->replace(
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'watchlist',
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[ [ 'wl_user', 'wl_namespace', 'wl_title' ] ],
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$values,
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__METHOD__
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);
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}
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$this->loadBalancer->reuseConnection( $dbw );
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}
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}
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