public function buildSimpleMatch($operator, $operands, &$params)
    {
        if (count($operands) !== 2) {
            throw new InvalidParamException("Operator '$operator' requires two operands.");
        }

        list($column, $value) = $operands;

        if (isset($this->matchOperators[$operator])) {
            $operator = $this->matchOperators[$operator];
        }

        return $this->buildMatchColumn($column) . $operator . $this->buildMatchValue($value, $params);
    }