温莎城堡拦截器管道

Question

I want to make a pipeline of Interceptors on a class named A. By pipleline i means each of those interceptor may do some processes before or after the class method invoked without calling the intercepted method directly, unlike traditional usage of interceptors in Windsor. Suppose the following example which I want to apply two interceptors Interceptor1 and Interceptor2 on all the class A methods. In futures others,maybe, other kind of interceptor will be added. provide that the order of these interceptors are not important, who should call the invocation.Proceed, where the intercepted method calling should happen.

public class A
{
    public virtual void DoSomething()
    {

    }
}
public class Interceptor1 : IInterceptor
{
    public virtual void Intercept(IInvocation invocation)
    {

    }
}

public class Interceptor2 : IInterceptor
{
    public virtual void Intercept(IInvocation invocation)
    {

    }
}

As an example suppose we want to check security, start transaction or something like these before entring the a class method. It should be mentioned that these interceptors are different for each class and might be changed during the development process. We can see such pattern in wcf where we use operation behavior or service behavior to have control over the entire service or each service operation.

Answer 1

I must be an old school Castle guy, but isn't that what a Factory is for? Slap an interface on each class, and let the factory work on that interface.