Castle实践7－BatchRegistration Facility

        BatchRegistration Facility是一个辅助Castle IOC容器配置的扩张单元。我们使用他可以很方便在容器中加载Component和Facility，你可以把单独的Component或者Facility编译成dll，然后通过配置文件用BatchRegistration Facility“一次性”或者“筛选”后加入到容器中而无需硬编码AddComponent和AddFacility，灵活性是很高的～
 
1）加载程序集中所有定义了Castle.Model.CastleComponentAttribute 的组件

<facility id="batchregistration">
    <assemblyBatch name="MyAssembly" useAttributes="true" />
</facility>

2）除Component1不会加载，其他定义了CastleComponentAttribute都会被加载

<facility id="batchregistration">
    <assemblyBatch name="MyAssembly" useAttributes="true">
        <exclude type="MyAssembly.Component1" />
    </assemblyBatch>
</facility>

3）只加载Component2

<facility id="batchregistration">
    <assemblyBatch name="MyAssembly" useAttributes="false">
        <include key="other" component="MyAssembly.Component2" />
    </assemblyBatch>
</facility>

4）加载Faclity

<facility id="batchregistration">
    <addFacility id="facility1" type="MyAssembly.Facility1, MyAssembly" />
    <addFacility id="facility2" type="MyAssembly.Facility2, MyAssembly" />
</facility>

        其实这个Facility做的就是根据配置扫描程序集然后动态加载到容器里面，虽然很简单却很灵活。比如你想更改一个component的行为，你只需要替换掉这个component的dll就行了，其他部分无需重新编译。

【使用方法】
1）建立这个Facility的配置

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
    <facilities>
        <facility id="batchregistration">
            <assemblyBatch name="MyAssembly" useAttributes="true" />
        </facility>
    </facilities>
</configuration>

2）声明组件的class并把他编辑成配置文件里面MyAssembly.dll.

[CastleComponent("comp1")]
public class Component1
{
    public Component1()
    {
    }
}

[CastleComponent("comp2")]
public class Component2
{
    public Component2()
    {
    }
}

3）使用Facility，这样Component1和Component2就自动被加载了。

IWindsorContainer container = new WindsorContainer("../../CastleConfig.xml"); 
container.AddFacility( "batchregistration", new BatchRegistrationFacility() );