基于花药价值的动态 属性 类型 属性

Question

如何根据另一个 属性 的值最好地实现具有动态数据类型的 属性？

我有一个 class 用于 Order 具有两个属性 OrderType（枚举）和 OrderStatus（枚举）

问题是 OrderStatus 的数据类型根据值 OrderType

的不同而不同

public class Order
{
    // Enums
    public enum OrderTypes { Restaurant, Grocery, Wallet }

    public enum RestaurantOrderStatus { OrderPlaced, Pending, Preparing, ReadyForPickup OnTheWay, Cancelled }
    public enum GroceryOrderStatus { OrderPlaced, Enqueued, Preparing, OnTheWay, Cancelled, Returning }
    public enum WalletOrderStatus { OrderPlaced, OnTheWay, Cancelled }

    // Properties
    public OrderTypes OrderType { get; set; }
    public OrderStatuses OrderStatus { get; set; } // How to set a dynamic data type (different enum)?
    public int Id { get; set; }
}

执行此操作的最佳方法是什么？

• 使用通用类型？

• 使用Builder Pattern?

Answer 1

我会实现一个通用类型。

public class Order<T> where T : Enum
{
    public Enums.OrderTypes OrderType { get; set; }
    public T OrderStatus { get; set; }
    public int Id { get; set; }
}

public class Enums
{
    public enum OrderTypes { Restaurant, Grocery, Wallet }

    public enum RestaurantOrderStatus { OrderPlaced, Pending, Preparing, ReadyForPickup, OnTheWay, Cancelled }
    public enum GroceryOrderStatus { OrderPlaced, Enqueued, Preparing, OnTheWay, Cancelled, Returning }
    public enum WalletOrderStatus { OrderPlaced, OnTheWay, Cancelled }
}

public class UseCase
{
    public static void UseLike()
    {
        Enums.OrderTypes orderType = Enums.OrderTypes.Grocery;

        switch (orderType)
        {
            case Enums.OrderTypes.Restaurant:
                _ = new Order<Enums.RestaurantOrderStatus>();
                break;
            case Enums.OrderTypes.Grocery:
                _ = new Order<Enums.GroceryOrderStatus>();
                break;
            case Enums.OrderTypes.Wallet:
                _ = new Order<Enums.WalletOrderStatus>();
                break;
        }

    }
}