public function getUser($isForceReload = false)
    {
        if ($isForceReload || null === $this->joinOneCacheUser) {
            $mapper = new UserMapper($this->dependencyContainer->getDatabase('user'));
            $this->joinOneCacheUser = $mapper->findByKeys(array(
                'user_id' => $this->getUserId(),
            ));
        }
        
        return $this->joinOneCacheUser;
    }