public static bool IsValid(this IOrder order)
{
return(DataValidationUtil.IsUsernameValid(order.ClientUsername) &&
DataValidationUtil.IsProductIdQuantityMapValid(order.ProductIdQuantityMap) &&
DataValidationUtil.IsPriceValid(order.Price) &&
(!order.DeliveryDate.HasValue || (order.DeliveryDate >= order.OrderDate)));
}
public static bool IsValid(this IProduct product)
{
return(product.Name.IsTrimmedNonEmpty() &&
DataValidationUtil.IsPriceValid(product.Price));
}
