protected function _getValidShopViews()
    {
        if (empty($this->_aValidShopViews)) {
            $aTables = $this->getShopTables();
            $this->_aValidShopViews = [];

            foreach ($aTables as $sTable) {
                $this->prepareShopTableViewNames($sTable);
            }
        }

        return $this->_aValidShopViews;
    }