public function supportsNativeJson()
    {
        if ($this->_supportsNativeJson !== null) {
            return $this->_supportsNativeJson;
        }

        if ($this->_version === null) {
            $this->_version = $this->_connection->getAttribute(PDO::ATTR_SERVER_VERSION);
        }

        return $this->_supportsNativeJson = version_compare($this->_version, '5.7.0', '>=');
    }