Cml\Db\MySql\Pdo::tableFactory PHP Method

    private function tableFactory($isRead = true)
    {
        $table = $operator = '';
        $cacheKey = [];
        foreach ($this->table as $key => $val) {
            $realTable = $this->getRealTableName($key);
            $cacheKey[] = $isRead ? $this->getCacheVer($realTable) : $realTable;
            $on = null;
            if (isset($this->join[$key])) {
                $operator = ' INNER JOIN';
                $on = $this->join[$key];
            } elseif (isset($this->leftJoin[$key])) {
                $operator = ' LEFT JOIN';
                $on = $this->leftJoin[$key];
            } elseif (isset($this->rightJoin[$key])) {
                $operator = ' RIGHT JOIN';
                $on = $this->rightJoin[$key];
            } else {
                empty($table) || ($operator = ' ,');
            }
            if (is_null($val)) {
                $table .= "{$operator} {$realTable}";
            } else {
                $table .= "{$operator} {$realTable} AS `{$val}`";
            }
            isset($this->forceIndex[$realTable]) && ($table .= ' force index(' . $this->forceIndex[$realTable] . ') ');
            is_null($on) || ($table .= " ON {$on}");
        }
        if (empty($table)) {
            throw new \InvalidArgumentException(Lang::get('_PARSE_SQL_ERROR_NO_TABLE_', $isRead ? 'select' : 'update/delete'));
        }
        return [$table, $cacheKey];
    }