public function build()
    {
        $query = $this->qb;
        if ($this->getWhereExpression()) {
            $query->where($this->getWhereExpression());
        }
        foreach ($this->getWhereParameters() as $key => $param) {
            $query->setParameter($key, $param, is_array($param) ? Connection::PARAM_STR_ARRAY : null);
        }

        return $query;
    }