WCF设计问题C＃继承 [英] WCF Design Question C# Inheritance

问题描述

我有一个基本客户端应用程序，用于配置WCF主机并启动第三方应用程序的运行过程，我监控其变化。

我有两个不同的要求[应用程序 - 一个是数据记录器 - 记录器特定数据，另一个是过程的直观表示]

我正在尝试为每个记录器使用基本客户端，ProcessView [每个将与Winform应用程序进行双向通信[多个]实例]，我想知道这是一个好的做法，我应该把callbackcontract装饰服务装饰放在哪里，因为每个应用程序的回调是不同的（可以只订阅一些回调而忽略其他等等。



这是一个基本布局，我不确定如何装修服务合同和回调合同。还有一点关于实现。



如果我的Service BehaviourAttribute在接口上将继承，我可以跳过并将该行为放在继承的类上继承或具有不同行为的类上？

 [ServiceContract ?? CallBackContract ??] {IAM UNSURE OF THIS ..] 
 IBaseClient 
 {
 
 
 
} 
 
 [ServiceContract？ ？ CallBackContract ??] {IAM UNSURE OF THIS ..] 
 BaseClient：IBaseClient 
 {
 .. App for App 
 ..我监控数据并创建事件 for  Recorder，ProcessView 
} 
 
 
 [ServiceContract，CallBackContract（Recorder）] 
 IRecorder 
 {
 .. stuff 
} 
 
录音机：BaseClient 
 {
 ...有不同的回调方法
 .. Save（）; 
 
} 
 
 
 [ServiceContract，CallBackContract（ProcessView）] 
 IProcessView 
 {
 ..这里的东西。 
} 
 
 
 ProcessView：BaseClient 
 {
 
 ...有不同的回调方法
 ..事件PushData（） ; 
 
 
 
 
} 
 
 WinFormApp 
 {
 .. SaveConfigurationToDB（）; 
 .. ViewDB（）; 
 .. ReceivePushed（）; 
 
} 

解决方案

您好。



首先， [ServiceContract] 属性应仅应用于方法定义而不应键入。对于类型，您有 [DataContract]

您是否听说过WCF中的KnowTypes？您应该在类型定义中标记您的接口：



KnownType（typeof（BaseClient）或[ServiceKnownType（typeof（BaseClient））]

 [DataContract，KnownType（ typeof （ BaseClient））] 
 IBaseClient 
 {
} 
 
 [DataContract] 
 BaseClient：IBaseClient 
 {
 ..数据为App 
 ..我监控数据并为记录器创建事件，并且ProcessView 
} 

以下文章可能对您有所帮助：



http://blogs.msdn.com/b/youssefm/archive/2009/04/21/understanding-known-types.aspx [ ^ ]



http://stackoverflow.com/questions/11272672/data-contract-known-types-and-a-set-of -interfaces-inheriting-each-other [ ^ ]



让我知道它是否适合你。

I have a base client application that configures a WCF host and starts a running process of a third party application which I monitor for changes.
I have two different requirements [Applications - one is a data recorder - recorder particular data, the other is a visual representation of the process]
I am trying to use a base Client for each Recorder, ProcessView [Each will have two way communication to a Winform Application [Multiple Instances], I would like to know if this is a good practice and where I should put the callbackcontract decoration service decoration as Callbacks are different for each application (is is possible to subscribe to only some callbacks and ignore others etc..

Here is a basic layout , I am unsure how to decorate for service contract and callback contracts. and a little on the implementation as well.

If my Service BehaviourAttribute is on the Interface will that be inherited and can I skip that and put the behavior on the class that inherits or have a different behavior on the class that inherits ?

[ServiceContract ?? CallBackContract ??] {IAM UNSURE OF THIS .. ]
IBaseClient
{



}

[ServiceContract ?? CallBackContract ??] {IAM UNSURE OF THIS .. ]
BaseClient : IBaseClient
{
  .. Data For App
 .. I monitor data and create events for Recorder, and ProcessView
}


[ServiceContract , CallBackContract(Recorder)]
IRecorder
{
.. stuff
}

Recorder : BaseClient
{
...Has different callback methods
.. Save();

}


[ServiceContract , CallBackContract(ProcessView)]
IProcessView
{
.. stuff here.
}


ProcessView : BaseClient
{
  
...Has different callback methods
.. Event PushData();




}

WinFormApp
{
.. SaveConfigurationToDB();
.. ViewDB();
.. ReceivePushed();

}

解决方案

Hi.

First of all the [ServiceContract] attribute should only be applied to method definition not to type. For type you have [DataContract]
Have you heard about KnowTypes in WCF? You should mark your interfaces in the type definition:

KnownType(typeof(BaseClient) or [ServiceKnownType(typeof(BaseClient))]

[DataContract, KnownType(typeof(BaseClient))]
IBaseClient
{
}
 
[DataContract]
BaseClient : IBaseClient
{
  .. Data For App
 .. I monitor data and create events for Recorder, and ProcessView
}

Following articles might help you:

http://blogs.msdn.com/b/youssefm/archive/2009/04/21/understanding-known-types.aspx[^]

http://stackoverflow.com/questions/11272672/data-contract-known-types-and-a-set-of-interfaces-inheriting-each-other[^]

Let me know if it worked for you.

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