public static function getUserIDFromLibraryID($libraryID, $libraryType = null)
{
if (isset(self::$libraryUserIDs[$libraryID])) {
return self::$libraryUserIDs[$libraryID];
}
$cacheKey = 'libraryUserID_' . $libraryID;
$userID = Z_Core::$MC->get($cacheKey);
if ($userID) {
self::$libraryUserIDs[$libraryID] = $userID;
return $userID;
}
if ($libraryType == null) {
$libraryType = Zotero_Libraries::getType($libraryID);
}
switch ($libraryType) {
case 'user':
$sql = "SELECT userID FROM users WHERE libraryID=?";
break;
case 'publications':
$sql = "SELECT userID FROM userPublications WHERE libraryID=?";
break;
case 'group':
$sql = "SELECT userID FROM groupUsers JOIN groups USING (groupID) " . "WHERE libraryID=? AND role='owner'";
break;
}
$userID = Zotero_DB::valueQuery($sql, $libraryID);
if (!$userID) {
if (!Zotero_Libraries::exists($libraryID)) {
throw new Exception("Library {$libraryID} does not exist");
}
// Wrong library type passed
error_log("Wrong library type passed for library {$libraryID} " . "in Zotero_Users::getUserIDFromLibraryID()");
return self::getUserIDFromLibraryID($libraryID);
}
self::$libraryUserIDs[$libraryID] = $userID;
Z_Core::$MC->set($cacheKey, $userID);
return $userID;
}
