温莎城堡地图命名组件要具体属性 [英] Castle Windsor Map Named Component To Specific Property

问题描述

以下情形：

我们用流利的API来注册所有两种成分tyepof（A）与命名的键组件的装配和。另外B类具有两个属性的typeof（A）应该得到指定的组件注入。

We use the Fluent API to register all components in an assembly and two components tyepof(A) with named keys. Another class B with two properties typeof(A) should get the named components injected.

示例：

public class A : IA {}

public class B : IB
{
    [Named("first")]
    public IA First { get; set; }

    [Named("second")]
    public IA Second { get; set; }
}

// ...

container.Register(Component.For<IA>().Instance(new A(value1)).Named("first"));
container.Register(Component.For<IA>().Instance(new A(value2)).Named("second"));

// ...
var b = container.Resolve<IB>(); // named instances of A get injected to B using the Named attribute

这可能与属性类似名称​​或仅与XML配置？

Is this possible with an attribute like Named or only with the Xml Config?

推荐答案

标准的方式来做到这一点的温莎使用的服务覆盖的。在您的例子，当你注册 B 你会做这样的：

The standard way to do this in Windsor is using service overrides. In your example, when you register B you'd do it like this:

container.Register(Component.For<IB>().ImplementedBy<B>()
                     .ServiceOverrides(new {First = "first", Second = "second"}));

（还有其他的方法来EX preSS这一点，请检查链接的文档）

(there are other ways to express this, check the linked docs)

使用的属性，你提出污染code与无关的关注（ B 不应该关心什么 A 取值得到注射）

Using a Named attribute as you propose pollutes the code with unrelated concerns (B should not care about what As get injected)

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