OCA\Richdocuments\File::__construct PHP Method

    public function __construct($fileId, $shareOps = null, $token = '')
    {
        if (!$fileId) {
            throw new \Exception('No valid file has been passed');
        }
        $this->fileId = $fileId;
        $this->sharing = $shareOps;
        $this->token = $token;
        if ($this->isPublicShare()) {
            if (isset($this->sharing['uid_owner'])) {
                $this->owner = $this->sharing['uid_owner'];
                if (!\OC::$server->getUserManager()->userExists($this->sharing['uid_owner'])) {
                    throw new \Exception('Share owner' . $this->sharing['uid_owner'] . ' does not exist ');
                }
                \OC_Util::tearDownFS();
                \OC_Util::setupFS($this->sharing['uid_owner']);
            } else {
                throw new \Exception($this->fileId . ' is a broken share');
            }
        } else {
            $this->owner = \OC::$server->getUserSession()->getUser()->getUID();
        }
        $this->initViews();
    }