protected function GetRemainingRowCount()
    {
        $aTableList = $this->aTablesToProcess;
        $iCount = 0;
        foreach ($aTableList as $iWorkId) {
            $oIndexQuery = TdbShopSearchQuery::GetNewInstance();
            /** @var $oIndexQuery TdbShopSearchQuery */
            if ($oIndexQuery->Load($iWorkId)) {
                $iCount = $iCount + $oIndexQuery->NumberOfRecordsLeftToIndex();
            }
        }

        return $iCount;
    }