protected function GetCommentTypeId()
    {
        if (false === $this->sPkgCommentTypeId) {
            $sQuery = "SELECT * FROM `pkg_comment_type` WHERE `pkg_comment_type`.`class_name` = 'TPkgCommentTypePkgShopArticleReview'";
            $oRes = MySqlLegacySupport::getInstance()->query($sQuery);
            if (MySqlLegacySupport::getInstance()->num_rows($oRes) > 0) {
                $aRow = MySqlLegacySupport::getInstance()->fetch_assoc($oRes);
                $this->sPkgCommentTypeId = $aRow['id'];
            } else {
                $this->sPkgCommentTypeId = '';
            }
        }

        return $this->sPkgCommentTypeId;
    }