BuyerStatistic::calculate

static function calculate($userId, $currency, $lid)
{
	$result = static::collectUserData($userId, $currency, $lid);

	if (!$result->isSuccess() || $result->hasWarnings())
	{
		return $result;
	}

	$statisticData = static::getList(
		array(
			'select' => array('ID'),
			'filter' => array('=USER_ID' => $userId, '=CURRENCY' => $currency, '=LID' => $lid),
			'limit' => 1
		)
	);

	$buyerStatistic = $statisticData->fetch();
	if (!$buyerStatistic)
	{
		return InternalsBuyerStatisticTable::add($result->getData());
	}

	return InternalsBuyerStatisticTable::update($buyerStatistic['ID'], $result->getData());
}