针对相同的匹配生存期范围注册多个组件

Question

我有一堆组件需要按照匹配的生存期范围（InstancePerMatchingLifetimeScope）进行解析。

然而，我必须逐一为它们中的每一个指定它。

例如）

builder.RegisterType<LukeSkywalker>().As<IJedi>().InstancePerMatchingLifetimeScope("starwars");
builder.RegisterType<ObiwanKenobi>().As<IJedi>().InstancePerMatchingLifetimeScope("starwars");
builder.RegisterType<MasterYoda>().As<IJedi>().InstancePerMatchingLifetimeScope("starwars");
...

然后你就明白了。有没有办法指定"所有这些"都是InstancePerMatchingLifetimeScope？

类似（伪代码）：

[
    builder.RegisterType<LukeSkywalker>().As<IJedi>(),
    builder.RegisterType<ObiwanKenobi>().As<IJedi>(),
    builder.RegisterType<MasterYoda>().As<IJedi>(),
].InstancePerMatchingLifetimeScope("starwars");

Answer 1

builder.RegisterType<LukeSkywalker>().As<IJedi>()返回一个类型为IRegistrationBuilder<out TLimit, out TActivatorData, out TRegistrationStyle>的对象，因此您可以为该类型创建自己的方法。

public static class RegistrationsExtensions
{
    public static IRegistrationBuilder<TLimit, TActivatorData, TStyle> InstancePerStarwars<TLimit, TActivatorData, TStyle>(this IRegistrationBuilder<TLimit, TActivatorData, TStyle> registration)
    {
        return registration.InstancePerMatchingLifetimeScope("starwars");
    }
}

这样称呼它：

builder.RegisterType<LukeSkywalker>().As<IJedi>().InstancePerStarwars()

您还可以创建另一种方法来扩展ContainerBuilder:

public static void InstancePerStarwars<TLimit, TActivatorData, TStyle>(this ContainerBuilder builder, params IRegistrationBuilder<TLimit, TActivatorData, TStyle>[] registrations)
{
    foreach (IRegistrationBuilder<TLimit, TActivatorData, TStyle> registration in registrations)
    {
        registration.InstancePerStarwars();
    }
}

然后，你将能够做到这一点：

builder.InstancePerStarwars(
    new IRegistrationBuilder<Object, ReflectionActivatorData, SingleRegistrationStyle>[] {
        builder.RegisterType<LukeSkywalker>().As<IJedi>(),
        builder.RegisterType<ObiwanKenobi>().As<IJedi>(),
        builder.RegisterType<MasterYoda>().As<IJedi>()
    });