static function bulkLoad($rows)
{
// Preload subthreads
$top_thread_ids = array();
$all_thread_rows = $rows;
$pageIds = array();
$linkBatch = new LinkBatch();
$userIds = array();
$loadEditorsFor = array();
$dbr = wfGetDB(DB_SLAVE);
if (!is_array(self::$replyCacheById)) {
self::$replyCacheById = array();
}
// Build a list of threads for which to pull replies, and page IDs to pull data for.
// Also, pre-initialise the reply cache.
foreach ($rows as $row) {
if ($row->thread_ancestor) {
$top_thread_ids[] = $row->thread_ancestor;
} else {
$top_thread_ids[] = $row->thread_id;
}
// Grab page data while we're here.
if ($row->thread_root) {
$pageIds[] = $row->thread_root;
}
if ($row->thread_summary_page) {
$pageIds[] = $row->thread_summary_page;
}
if (!isset(self::$replyCacheById[$row->thread_id])) {
self::$replyCacheById[$row->thread_id] = array();
}
}
$all_thread_ids = $top_thread_ids;
// Pull replies to the threads provided, and as above, pull page IDs to pull data for,
// pre-initialise the reply cache, and stash the row object for later use.
if (count($top_thread_ids)) {
$res = $dbr->select('thread', '*', array('thread_ancestor' => $top_thread_ids, 'thread_type != ' . $dbr->addQuotes(Threads::TYPE_DELETED)), __METHOD__);
foreach ($res as $row) {
// Grab page data while we're here.
if ($row->thread_root) {
$pageIds[] = $row->thread_root;
}
if ($row->thread_summary_page) {
$pageIds[] = $row->thread_summary_page;
}
$all_thread_rows[] = $row;
$all_thread_ids[$row->thread_id] = $row->thread_id;
}
}
// Pull thread reactions
if (count($all_thread_ids)) {
$res = $dbr->select('thread_reaction', '*', array('tr_thread' => $all_thread_ids), __METHOD__);
foreach ($res as $row) {
$thread_id = $row->tr_thread;
$user = $row->tr_user_text;
$info = array('type' => $row->tr_type, 'user-id' => $row->tr_user, 'user-name' => $row->tr_user_text, 'value' => $row->tr_value);
$type = $info['type'];
$user = $info['user-name'];
if (!isset(self::$reactionCacheById[$thread_id])) {
self::$reactionCacheById[$thread_id] = array();
}
if (!isset(self::$reactionCacheById[$thread_id][$type])) {
self::$reactionCacheById[$thread_id][$type] = array();
}
self::$reactionCacheById[$thread_id][$type][$user] = $info;
}
}
// Preload page data (restrictions, and preload Article object with everything from
// the page table. Also, precache the title and article objects for pulling later.
$articlesById = array();
if (count($pageIds)) {
// Pull restriction info. Needs to come first because otherwise it's done per
// page by loadPageData.
$restrictionRows = array_fill_keys($pageIds, array());
$res = $dbr->select('page_restrictions', '*', array('pr_page' => $pageIds), __METHOD__);
foreach ($res as $row) {
$restrictionRows[$row->pr_page][] = $row;
}
$res = $dbr->select('page', '*', array('page_id' => $pageIds), __METHOD__);
foreach ($res as $row) {
$t = Title::newFromRow($row);
if (isset($restrictionRows[$t->getArticleId()])) {
$t->loadRestrictionsFromRows($restrictionRows[$t->getArticleId()], $row->page_restrictions);
}
$article = new Article($t);
$article->loadPageData($row);
self::$titleCacheById[$t->getArticleId()] = $t;
$articlesById[$article->getId()] = $article;
if (count(self::$titleCacheById) > 10000) {
self::$titleCacheById = array();
}
}
}
// For every thread we have a row object for, load a Thread object, add the user and
// user talk pages to a link batch, cache the relevant user id/name pair, and
// populate the reply cache.
foreach ($all_thread_rows as $row) {
$thread = Thread::newFromRow($row, null);
if (isset($articlesById[$thread->rootId])) {
$thread->root = $articlesById[$thread->rootId];
}
// User cache data
$t = Title::makeTitleSafe(NS_USER, $row->thread_author_name);
$linkBatch->addObj($t);
$t = Title::makeTitleSafe(NS_USER_TALK, $row->thread_author_name);
$linkBatch->addObj($t);
User::$idCacheByName[$row->thread_author_name] = $row->thread_author_id;
$userIds[$row->thread_author_id] = true;
if ($row->thread_editedness > Threads::EDITED_BY_AUTHOR) {
$loadEditorsFor[$row->thread_root] = $thread;
$thread->setEditors(array());
}
}
// Pull list of users who have edited
if (count($loadEditorsFor)) {
$res = $dbr->select('revision', array('rev_user_text', 'rev_page'), array('rev_page' => array_keys($loadEditorsFor), 'rev_parent_id != ' . $dbr->addQuotes(0)), __METHOD__);
foreach ($res as $row) {
$pageid = $row->rev_page;
$editor = $row->rev_user_text;
$t = $loadEditorsFor[$pageid];
$t->addEditor($editor);
}
}
// Pull link batch data.
$linkBatch->execute();
$threads = array();
// Fill and return an array with the threads that were actually requested.
foreach ($rows as $row) {
$threads[$row->thread_id] = Threads::$cache_by_id[$row->thread_id];
}
return $threads;
}