Question

我的程序的任务是模拟汽车服务站的工作流程。其中一部分是对进来的车辆（可以是汽车，卡车或公共汽车）进行注册。根据车辆类型，程序必须选择可以修理的那些零件。用于汽车-船体，断裂，车轮。对于卡车-与轿车和液压系统相同。对于公交车-与“汽车和插页式广告”相同。

我创建了下一组类：

//vehicle types
public abstract class Vehicle {}

public class Car : Vehicle {}

public class Truck : Vehicle {}

public class Bus : Vehicle {}

//vehicle parts types
public abstract class VehiclePart
{

    public short State { get; set;}

    public string Name
    {
        get { return this.GetType().Name; }
    }
}

public abstract class CarVehiclePart : VehiclePart { }

public abstract class TruckVehiclePart : VehiclePart { }

public abstract class BusVehiclePart : VehiclePart { }


public class Hull : CarVehiclePart { }

public class Wheels : CarVehiclePart { }

public class Breaks : CarVehiclePart { }

public class Hydraulics : TruckVehiclePart { }

public class Interior : BusVehiclePart { }

public class Handrail : BusVehiclePart { }

我试图实现的是获得完整的类清单，并介绍每种类型的车辆的零件。我可以对这些类进行操作吗？还是应该重写这种层次结构？

谢谢。

Answer 1

我建议将零件建模为枚举而不是类。同样，您可以将多态与GetPartsToRepair方法一起使用。当对象为Car类型时，将返回每种车辆类型需要修理的3个零件；如果其类型为Truck，则添加液压；如果其类型为Bus，则添加内饰。

会是这样的：

public enum VehiclePart{
  Hull,
  Wheels,
  Breaks,
  Hydraulics,
  Interior,
  Handrail,
}

//vehicle types
public abstract class Vehicle {
    public virtual List<VehiclePart> GetPartsToRepair(){
        return new List<VehiclePart>(){ VehiclePart.Hull, VehiclePart.Wheels, VehiclePart.Breaks };
    }
}

public class Car : Vehicle { }

public class Truck : Vehicle 
{
    public override List<VehiclePart> GetPartsToRepair(){
        var result = base.GetPartsToRepair();
        result.Add(VehiclePart.Hydraulics);
        return result;
    }
}

public class Bus : Vehicle 
{
    public override List<VehiclePart> GetPartsToRepair(){
        var result = base.GetPartsToRepair();
        result.Add(VehiclePart.Interior);
        return result;
    }
}

从层次结构中检索特定的类

1 个答案: