什么是工作和LT;>在果园CMS类？ [英] What is the Work<> class for in Orchard CMS?

问题描述

简单明了，什么是 Orchard.Environment.Work<的使用情况;> 中定义的类 Orchard\Environment\ WorkContextModule.cs ？

Plain and simple, what is the use case of the Orchard.Environment.Work<> class defined in Orchard\Environment\WorkContextModule.cs?

可以在几个地方找到像

private readonly Work<IContainerService> _containerService;

public Shapes(Work<IContainerService> containerService) {
  _containerService = containerService;
...

是它 IContainerService <迟发分辨率/ code>？

Is it for delayed resolution of IContainerService?

推荐答案

的工作类是懒加载依赖注入。实例化类依赖性时，没有得到解决，但在调用值属性，只有当：

The Work class is for lazy loading dependency injection. The dependency is not resolved when instantiating the class, but only when calling the Value property:

private readonly IMyService _myService;
private readonly IMyOtherService _myOtherService;
public MyClass(Work<IMyService> myService, IMyOtherService myOtherService) {
    // Just assign the Work class to the backing property
    // The dependency won't be resolved until '_myService.Value' is called
    _myService = myService;
    // The IMyOtherService is resolved and assigned to the _myOtherService property
    _myOtherService = myOtherService;
}

现在，只有当 _myService.Value 被调用时，IMyService得到由依赖解析器，它给你一个懒加载依赖注入的工作解决了。

Now only when _myService.Value is called, the IMyService gets resolved by the Dependency resolver, which gives you the working of a lazy loading dependency injection.

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