Orchard CMS中的Work <>类是什么？

Question

简单明了,Orchard.Environment.Work<>该类定义的用例是Orchard\Environment\WorkContextModule.cs什么？

它可以在几个地方找到

private readonly Work<IContainerService> _containerService;

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

这是为了延迟解决IContainerService？

Answer 1

该Work班是延迟加载依赖注入.实例化类时,依赖性未得到解决,但仅在调用Value属性时才解决:

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;
}

现在只有在_myService.Value被调用时,依赖性解析器才能解析IMyService,这使您可以进行延迟加载依赖注入.