使用 Decorator 模式进行 Ninject 依赖注入

发布于 2024-12-28 03:42:12 字数 895 浏览 1 评论 0原文

比如说，我有这样的类层次结构：

public interface IRepository { }

public class SomeSimpleRepository : IRepository {}

现在我想用附加功能“装饰” SomeSimpleRepository

public class MoreAdvancedRespository : IRepository 
{ 
    private readonly IRepository _originalRepository;

    public MoreAdvancedRespository(IRepository original) 
    { }
}

过了一会儿又一个..

public class TrickyRepository : IRepository
{
    private readonly IRepository _originalRepository;

    public TrickyRepository (IRepository original) 
    { }
}

现在，我需要完成绑定。在应用程序中，我需要 TrickyRepository 的实例，用 MoreAdvancedRespository 进行初始化。所以，我需要写一些类似的东西：

Bind<IRepository>().To<TrickyRepository>.With ??

在这里我很困惑，我需要以某种方式说，采用 MoreAdvancedRespository 但用 SomeSimpleRepository 初始化它。这是一种必须针对一个接口来解决的依赖链。

有人对此有建议吗？

原文

Say, I have such classes hierarchy:

public interface IRepository { }

public class SomeSimpleRepository : IRepository {}

Now I want to "decorate" SomeSimpleRepository with additional functions

public class MoreAdvancedRespository : IRepository 
{ 
    private readonly IRepository _originalRepository;

    public MoreAdvancedRespository(IRepository original) 
    { }
}

After awhile another one..

public class TrickyRepository : IRepository
{
    private readonly IRepository _originalRepository;

    public TrickyRepository (IRepository original) 
    { }
}

Now, I need to accomplish binding. In application I need the instance of TrickyRepository, to be initialized with MoreAdvancedRespository. So, I need to write something like:

Bind<IRepository>().To<TrickyRepository>.With ??

Here I'm confused, I need somehow to say, take MoreAdvancedRespository but initialize it with SomeSimpleRepository. This is a kind of chain of dependencies that have to be resolved against one interface.

Does any one have suggestion on this?

分享到QQ

分享到微博

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

需要登录才能够评论，你可以免费注册一个本站的账号。

断肠人 2025-01-04 03:42:12

使用 WhenInjectedInto：

Bind<IRepository>().To<MoreAdvancedRespository>()
                   .WhenInjectedInto<TrickyRepository>();
Bind<IRepository>().To<SomeSimpleRepository>()
                   .WhenInjectedInto<MoreAdvancedRespository>();

请参阅这篇博文了解更多信息。

Use WhenInjectedInto:

Bind<IRepository>().To<MoreAdvancedRespository>()
                   .WhenInjectedInto<TrickyRepository>();
Bind<IRepository>().To<SomeSimpleRepository>()
                   .WhenInjectedInto<MoreAdvancedRespository>();

See this blog post for more info.

回复收藏 0 原文

~没有更多了~