$this->loadBalancer->reuseConnection( $connection );
}
+ /**
+ * Count the number of individual items that are watched by the user.
+ * If a subject and corresponding talk page are watched this will return 2.
+ *
+ * @param User $user
+ *
+ * @return int
+ */
+ public function countWatchedItems( User $user ) {
+ $dbr = $this->getConnection( DB_SLAVE );
+ $return = (int)$dbr->selectField(
+ 'watchlist',
+ 'COUNT(*)',
+ [
+ 'wl_user' => $user->getId()
+ ],
+ __METHOD__
+ );
+ $this->reuseConnection( $dbr );
+
+ return $return;
+ }
+
/**
* @param LinkTarget $target
*
return $watchCounts;
}
+ /**
+ * Number of watchers of each page who have visited recent edits to that page
+ *
+ * @param array $targetsWithVisitThresholds array of pairs (LinkTarget $target, mixed $threshold),
+ * $threshold is:
+ * - a timestamp of the recent edit if $target exists (format accepted by wfTimestamp)
+ * - null if $target doesn't exist
+ * @param int|null $minimumWatchers
+ * @return array multi-dimensional like $return[$namespaceId][$titleString] = $watchers,
+ * where $watchers is an int:
+ * - if the page exists, number of users watching who have visited the page recently
+ * - if the page doesn't exist, number of users that have the page on their watchlist
+ * - 0 means there are no visiting watchers or their number is below the minimumWatchers
+ * option (if passed).
+ */
+ public function countVisitingWatchersMultiple(
+ array $targetsWithVisitThresholds,
+ $minimumWatchers = null
+ ) {
+ $dbr = $this->getConnection( DB_SLAVE );
+
+ $conds = $this->getVisitingWatchersCondition( $dbr, $targetsWithVisitThresholds );
+
+ $dbOptions = [ 'GROUP BY' => [ 'wl_namespace', 'wl_title' ] ];
+ if ( $minimumWatchers !== null ) {
+ $dbOptions['HAVING'] = 'COUNT(*) >= ' . (int)$minimumWatchers;
+ }
+ $res = $dbr->select(
+ 'watchlist',
+ [ 'wl_namespace', 'wl_title', 'watchers' => 'COUNT(*)' ],
+ $conds,
+ __METHOD__,
+ $dbOptions
+ );
+
+ $this->reuseConnection( $dbr );
+
+ $watcherCounts = [];
+ foreach ( $targetsWithVisitThresholds as list( $target ) ) {
+ /* @var LinkTarget $target */
+ $watcherCounts[$target->getNamespace()][$target->getDBkey()] = 0;
+ }
+
+ foreach ( $res as $row ) {
+ $watcherCounts[$row->wl_namespace][$row->wl_title] = (int)$row->watchers;
+ }
+
+ return $watcherCounts;
+ }
+
+ /**
+ * Generates condition for the query used in a batch count visiting watchers.
+ *
+ * @param IDatabase $db
+ * @param array $targetsWithVisitThresholds array of pairs (LinkTarget, last visit threshold)
+ * @return string
+ */
+ private function getVisitingWatchersCondition(
+ IDatabase $db,
+ array $targetsWithVisitThresholds
+ ) {
+ $missingTargets = [];
+ $namespaceConds = [];
+ foreach ( $targetsWithVisitThresholds as list( $target, $threshold ) ) {
+ if ( $threshold === null ) {
+ $missingTargets[] = $target;
+ continue;
+ }
+ /* @var LinkTarget $target */
+ $namespaceConds[$target->getNamespace()][] = $db->makeList( [
+ 'wl_title = ' . $db->addQuotes( $target->getDBkey() ),
+ $db->makeList( [
+ 'wl_notificationtimestamp >= ' . $db->addQuotes( $db->timestamp( $threshold ) ),
+ 'wl_notificationtimestamp IS NULL'
+ ], LIST_OR )
+ ], LIST_AND );
+ }
+
+ $conds = [];
+ foreach ( $namespaceConds as $namespace => $pageConds ) {
+ $conds[] = $db->makeList( [
+ 'wl_namespace = ' . $namespace,
+ '(' . $db->makeList( $pageConds, LIST_OR ) . ')'
+ ], LIST_AND );
+ }
+
+ if ( $missingTargets ) {
+ $lb = new LinkBatch( $missingTargets );
+ $conds[] = $lb->constructSet( 'wl', $db );
+ }
+
+ return $db->makeList( $conds, LIST_OR );
+ }
+
/**
* Get an item (may be cached)
*
return $item;
}
+ /**
+ * @param User $user
+ * @param array $options Allowed keys:
+ * 'forWrite' => bool defaults to false
+ *
+ * @return WatchedItem[]
+ */
+ public function getWatchedItemsForUser( User $user, array $options = [] ) {
+ $options += [ 'forWrite' => false ];
+
+ $db = $this->getConnection( $options['forWrite'] ? DB_MASTER : DB_SLAVE );
+ $res = $db->select(
+ 'watchlist',
+ [ 'wl_namespace', 'wl_title', 'wl_notificationtimestamp' ],
+ [ 'wl_user' => $user->getId() ],
+ __METHOD__
+ );
+ $this->reuseConnection( $db );
+
+ $watchedItems = [];
+ foreach ( $res as $row ) {
+ // todo these could all be cached at some point?
+ $watchedItems[] = new WatchedItem(
+ $user,
+ new TitleValue( (int)$row->wl_namespace, $row->wl_title ),
+ $row->wl_notificationtimestamp
+ );
+ }
+
+ return $watchedItems;
+ }
+
/**
* Must be called separately for Subject & Talk namespaces
*
return (bool)$this->getWatchedItem( $user, $target );
}
+ /**
+ * @param User $user
+ * @param LinkTarget[] $targets
+ *
+ * @return array multi-dimensional like $return[$namespaceId][$titleString] = $timestamp,
+ * where $timestamp is:
+ * - string|null value of wl_notificationtimestamp,
+ * - false if $target is not watched by $user.
+ */
+ public function getNotificationTimestampsBatch( User $user, array $targets ) {
+ $timestamps = [];
+ foreach ( $targets as $target ) {
+ $timestamps[$target->getNamespace()][$target->getDBkey()] = false;
+ }
+
+ if ( $user->isAnon() ) {
+ return $timestamps;
+ }
+
+ $targetsToLoad = [];
+ foreach ( $targets as $target ) {
+ $cachedItem = $this->getCached( $user, $target );
+ if ( $cachedItem ) {
+ $timestamps[$target->getNamespace()][$target->getDBkey()] =
+ $cachedItem->getNotificationTimestamp();
+ } else {
+ $targetsToLoad[] = $target;
+ }
+ }
+
+ if ( !$targetsToLoad ) {
+ return $timestamps;
+ }
+
+ $dbr = $this->getConnection( DB_SLAVE );
+
+ $lb = new LinkBatch( $targetsToLoad );
+ $res = $dbr->select(
+ 'watchlist',
+ [ 'wl_namespace', 'wl_title', 'wl_notificationtimestamp' ],
+ [
+ $lb->constructSet( 'wl', $dbr ),
+ 'wl_user' => $user->getId(),
+ ],
+ __METHOD__
+ );
+ $this->reuseConnection( $dbr );
+
+ foreach ( $res as $row ) {
+ $timestamps[$row->wl_namespace][$row->wl_title] = $row->wl_notificationtimestamp;
+ }
+
+ return $timestamps;
+ }
+
/**
* Must be called separately for Subject & Talk namespaces
*
dépôts / lhc / web / wiklou.git / blobdiff