如何不重复地分割WCF合同？

Question

I want to refactor service into multiple sub-services, separated by their business scope:

[ServiceContract]
public interface IMyService
{
    [OperationContract]
    int Method1();
    [OperationContract]
    int Method2();
}

And some users already using it , so I can't just bash in and say "goodbye" to them, refactoring everything on my way.

So, to avoid duplication, I use abstractions and interfaces beforehand and in this case I tried to separate contract to multiple interfaces and leaving main one as aggregator:

[ServiceContract]
public interface IMyService : IMySubService1, IMySubService2
{
}

[ServiceContract]
public interface IMySubService1
{
    [OperationContract]
    int Method1();
}

[ServiceContract]
public interface IMySubService2
{
    [OperationContract]
    int Method2();
}

I thought this will do the thing, but NO - it's breaking those clients, because now those methods located on different paths in WSDL, even though Im hosting only IMyService :

It was: net.tcp://foobar/IMyService/Method1

It became: net.tcp://foobar/IMySubService1/Method1

And that's a problem. I can't separate my contract into interfaces without duplication of code (one for implementation, and one explicitly aggregated for contract), any way I can solve it?

Answer 1

Managed to do it this way:

[ServiceContract(Name = nameof(IMyService))]
public interface IMyService : IMySubService1, IMySubService2
{
}

[ServiceContract(Name = nameof(IMyService))]
public interface IMySubService1
{
    [OperationContract]
    int Method1();
}

[ServiceContract(Name = nameof(IMyService))]
public interface IMySubService2
{
    [OperationContract]
    int Method2();
}

Now WSDL generated correctly.