如何通过Windsor通过接口和名称空间注册类? [英] How do I register classes by both interface and namespace with Windsor?

问题描述

我正在尝试使用Castle.Windsor(3.2.0.0)

I'm trying to use Castle.Windsor (3.2.0.0) convention based registration, but can't seem to figure out how to register classes implementing a particular interface only in a particular namespace.

例如我真的很想写这样的东西:

e.g. what I really want to be able to write is something like this :

container.Register(Classes.FromThisAssembly()
                          .InNamespace("MyApp.EventHandlers")
                          .BasedOn(typeof(IHandlesEvent<>))
                          .WithServiceAllInterfaces()

但是我得到一个警告，似乎暗示这实际上将要做的是在 EventHandlers 名称空间中注册所有内容，然后在实现 IHandlesEvent<> 的当前程序集中注册所有内容>.

But I get a warning that seems to imply what this will really do is register everything in the EventHandlers namespace and then everything in the current assembly that implements IHandlesEvent<>.

如果我运行该应用程序，确实确实会发生这种情况.我不希望所有实现该接口的东西都被注册(例如，某些实现类是Sagas，需要手动跟踪)，并且我真的不希望该名称空间中的所有东西都被注册.

If I run the application this does indeed seem to be what happens. I don't want everything that implements that interface to be registered (for example, some of the implementing classes are Sagas, which need to be manually tracked) and I don't really want everything in that namespace registered.

我真的不想单独注册事件处理程序，但是我无法从Windsor文档中看到如何按照惯例进行所需的操作.有可能吗?

I really don't want to register the event handlers individually, but I can't see from the Windsor documentation how to do what I need by convention. Is it possible?

推荐答案

我也很惊讶，但是我可以观察到Castle 3.2的行为. BasedOn 发出警告，称它将重新初始化注册:这是我的示例代码:

I'm surprised too, but I could observe the behavior on Castle 3.2. BasedOn pushed a warning saying that it would reinitialize the registration: here is my sample code:

namespace WindsorTest
{
    public interface IHandlesEvent {}

    public interface IDontWantToBeRegistered {}

    namespace Select
    {
        public class SelectClass : IHandlesEvent { }
        public class DontRegisterMe : IDontWantToBeRegistered { }
    }

    namespace DontSelect
    {
        public class DontSelectClass: IHandlesEvent {}
    }


    internal class Program
    {
        private static void Main(string[] args)
        {
            var container = new WindsorContainer();
            container.Register(Classes.FromThisAssembly()
                .InNamespace("WindsorTest.Select")
                .BasedOn<IHandlesEvent>()
                .WithServiceAllInterfaces()
                );
            foreach (var handler in container.ResolveAll<IHandlesEvent>())
            {
                Console.WriteLine(handler.GetType().Name);
            }

            foreach (var handler in container.ResolveAll<IDontWantToBeRegistered>())
            {
                Console.WriteLine(handler.GetType().Name);
            }
            Console.ReadLine();
        }
    }
}

它在运行时输出 DontSelectClass .

但是，我找到了一种方法从注册的基类开始，然后再使用命名空间对其进行优化.只需使用:

However I found a way to start with the base class for your registration and refine it with the namespace afterwards. Just use:

container.Register(Classes.FromThisAssembly()
    .BasedOn<IHandlesEvent>()
    .If(t => t.Namespace == "WindsorTest.Select")
    .WithServiceAllInterfaces()
    );

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