PhpOrient\Protocols\Binary\Abstracts\Operation::_read_prefetch_record PHP Method

    protected function _read_prefetch_record()
    {
        $resultSet = [];
        $status = $this->_readByte();
        while ($status != 0) {
            $payload = $this->_readRecord();
            $record = Record::fromConfig($payload);
            /**
             * @var Closure|string $_callback
             */
            if (!is_callable($this->_callback, true)) {
                throw new PhpOrientBadMethodCallException("'{$this->_callback}' is not a callable function");
            }
            /**
             * async-result-type byte as trailing byte of a record can be:
             * 0: no records remain to be fetched
             * 1: a record is returned as a result set
             * 2: a record is returned as pre-fetched to be loaded in client's
             *       cache only. It's not part of the result set but the client
             *       knows that it's available for later access
             */
            if ($status == 1) {
                #  a record is returned as a result set
                $resultSet[] = $record;
            } elseif ($status == 2) {
                #  save in cache
                call_user_func($this->_callback, $record);
            }
            $status = $this->_readByte();
        }
        return $resultSet;
    }