Question

我已经看过几个建议＆＃34;要小心＆＃34;在域模型中继承。在我的情况下，我翻转了继承方法。我想知道它是否可以优化（也许使用合成？）。我们假设我有两种类型的InterfaceConfiguration：

VistaLink：出站界面。必须指定EndPoint（另一个实体），即传出消息的位置。
HL7：可以入站（不需要EndPoint）或出站（需要EndPoint和FacilityID）

我想出了类似的东西（为简单起见省略了大多数属性和验证）：

//Shared properties are in the base class
public class InterfaceConfiguration: IEntity<string>
{
   public InterfaceConfiguration(string id, string displayName, bool isActive)
   {
      Id = id;
      DisplayName = displayName;
      IsActive = isActive;
   }
   public string Id { get; protected set; }
   public string DisplayName { get; protected set; }
   public bool IsActive { get; protected set; }
}

//Inbound Hl7 interface with its properties
public class Hl7InterfaceConfiguration : InterfaceConfiguration
{
   public Hl7InterfaceConfiguration(string id, string displayName, 
      bool isActive, string fieldSeparator, char[] encodingCharacters, ...):  
    base(id, displayName, isActive)
   {
       FieldSeparator = fieldSeparator;
       EncodingCharacters = encodingCharacters;
       ProcessingId = processingId;
       VersionId = versionId;
   }
   public string FieldSeparator { get; protected set; }
   public char[] EncodingCharacters { get; protected set; }
   .....
}

public class Hl7OutboundInterfaceConfiguration : Hl7InterfaceConfiguration
{
   public Hl7OutboundInterfaceConfiguration(string id, string displayName, bool isActive, string fieldSeparator, char[] encodingCharacters, ..., IntrefaceEndPoint endPoint, string facilityId)
    : base(..........)
   {
       if (endPoint == null)
           throw new ArgumentException(nameof(endPoint));
       if (endPoint.AddressType != EndPointAddressTypeEnum.DnsHostName && endPoint.AddressType != EndPointAddressTypeEnum.IPAddress)
           throw new ArgumentException("Address type must be DnsHostName or IPAddress", nameof(endPoint));

       if (facilityId == null)
       {
           throw new ArgumentException("Facility ID is required for HL7 outbound interface", nameof(facilityId));
       }
   }
   public void AssignEndPoint(IntrefaceEndPoint endPoint)
   { .... }
   public IntrefaceEndPoint EndPoint { get; protected set; }
   public string FacilityId { get; protected set; }
}

public class VistaLinkInterfaceConfiguration : InterfaceConfiguration
{
   public VistaLinkInterfaceConfiguration(string id, string displayName, bool isActive, IntrefaceEndPoint endPoint)
    : base(id, displayName, isActive)
   {
       if (endPoint == null)
           throw new ArgumentException(nameof(endPoint));
       if (endPoint.AddressType != EndPointAddressTypeEnum.DnsHostName && endPoint.AddressType != EndPointAddressTypeEnum.IPAddress)
           throw new ArgumentException("Address type muct be DnsHostName or IPAddress", nameof(endPoint));
   }

   public IntrefaceEndPoint EndPoint { get; protected set; }
   public void AssignEndPoint(IntrefaceEndPoint endPoint)
   { .... }
}

我试图让它变得更加平坦＆＃34;但不确定如何。例如， EndPoint 和 FacilityID （ Hl7OutboundInterfaceConfiguration 的属性）不适用于 Hl7InterfaceConfiguration （其中仅限入境）。那么这会使它们处于未分配状态，并可能混淆外部功能？我也试图遵循＆＃34;始终有效＆＃34;做法。感谢。

为分层数据设计域模型（在DDD中）

0 个答案: