是MEF OSGi for .NET吗？ [英] Is MEF OSGi for .NET?

问题描述

我只是想围绕管理可扩展性框架（ MEF ），并进行深入研究。我有一个Eclipse的背景，所以在我的大脑我现在有这样的方程：

I'm just trying to get my head around the Managed Extensibility Framework (MEF) at the moment and digging into a bit. I have an Eclipse background so in my brain I currently have the equation:

MEF =〜OSGi for .NET

根据我迄今为止听到的内容。我是正确的吗？

Based on what I have heard so far. Am I on the right lines?

推荐答案

Scott Hanselman帮助他突出了他的 podcast 148 与Glenn Block。

Scott Hanselman helped to highlights the specifics about MEF in his podcast 148 with Glenn Block.

与OSGi相比，MEF建立在反转控制之上， OSGi 不是：它（OSGi）将发现新的捆绑通过基于生命周期层的不同机制。

Compared to OSGi, MEF is built upon "Inversion of Control" and OSGi is not: it (OSGi) will discover new bundle through a different mechanism based on a Life Cycle Layer.

MEF 专注于应用程序可扩展性。它使用DI作为组合不同扩展名的策略，但是它本身不是一个通用的DI容器。

MEF is focused on application extensibility. It uses DI as a strategy for composing the different extensions, however it is not in itself a generic DI container.

由于最后一点可能令人困惑，播客的成绩单可以帮助您： p>

Since the last point can be confusing, the transcripts of the podcast can help:

我基本上定位它的方式，两者之间的区别是，IoC容器真的是关于管理已知的在不同环境中的事情集合，像我想要在我的磁盘环境中的记录器，我想在我的测试环境中一个模拟记录器。

The way I basically position it though, the difference between the two, is that IoC containers are really about managing a known set of things in different environments, like I want a logger in my disk environment, I want a mock logger in my test environment.

所以MEF真的是关于管理一个未知的东西，归结为什么是在IoC容器中我倾向于做一个基于会议或注册的具体注册机制，说这是记录器的意思，这就是这个意思，这就是这个意思。

So MEF is really about managing an unknown set of things and what that boils down to is that in an IoC Container I tend to do either a convention-based or a registration, specific registration mechanism, to say here's what logger means, here's what this means, here's what that means.

MEF在代码中使用代码，发现机制和注释，它们是
属性，系统中出现的是哪里，那就是那里。

MEF uses the code and a discovery mechanism and annotations on the code, which are attributes, where whatever shows up in the system, that's what's there.

再一次，把它带到更高的层次，这是关于你使用MEF真正管理一组未知的东西，你使用IoC容器来管理一组已知的东西。

So again, taking it to a higher level, it's about you use MEF to really manage a set of unknown things, you use IoC Containers to manage a set of known things.

结论： ）主要区别是发现原则（IoC与生命周期）

Conclusion: (one of) the main difference is the discovery principle (IoC vs. lifecycle)

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