public static function getInstance($dbCon)
{
if (self::$m_instance == null) {
self::$m_instance = new FQLEngine($dbCon);
$fpath = dirname(__FILE__);
self::$m_instance->addDbTableHandler("user", "{$fpath}/users-table-config.json", "UserDbTableAdaptor");
self::$m_instance->addDbTableHandler("friend", "", "FriendDbTableAdaptor");
self::$m_instance->addDbTableHandler("group", "{$fpath}/group-table-config.json");
self::$m_instance->addDbTableHandler("group_member", "", "GroupMemberDbTableAdaptor");
}
return self::$m_instance;
}
