DDD-使用值对象更新聚合根

Question

这里https://docs.microsoft.com/en-us/dotnet/architecture/microservices/microservice-ddd-cqrs-patterns/net-core-microservice-domain-model举例说明将数据封装在域实体中：

// WRONG ACCORDING TO DDD PATTERNS – CODE AT THE APPLICATION LAYER OR
// COMMAND HANDLERS
// Code in command handler methods or Web API controllers
//... (WRONG) Some code with business logic out of the domain classes ...
OrderItem myNewOrderItem = new OrderItem(orderId, productId, productName,
    pictureUrl, unitPrice, discount, units);

//... (WRONG) Accessing the OrderItems collection directly from the application layer // or command handlers
myOrder.OrderItems.Add(myNewOrderItem);
//...

// RIGHT ACCORDING TO DDD--CODE AT THE APPLICATION LAYER OR COMMAND HANDLERS
// The code in command handlers or WebAPI controllers, related only to application stuff
// There is NO code here related to OrderItem object's business logic
myOrder.AddOrderItem(productId, productName, pictureUrl, unitPrice, discount, units);

// The code related to OrderItem params validations or domain rules should
// be WITHIN the AddOrderItem method.

//...

但是，如果我有一长串要通过的地图，那么通过这个问题来做类似的事情

myOrder.AddOrderItem(new OrderItem(orderId, productId, productName,
    pictureUrl, unitPrice, discount, units))