Constructor Injection - Do we inject factories as well?

Question

After listening to the Clean Code Talks, I came to understand that we should use factories to compose objects. So, for example, if a House has a Door a

Answer 1

If you end up using Unity, I have recently implemented an equivalent of Castle Windsor Typed Factories for Unity. You can find the project at https://github.com/PombeirP/Unity.TypedFactories, and the NuGet package at http://nuget.org/packages/Unity.TypedFactories.

The usage is the following:

unityContainer
    .RegisterTypedFactory()
    .ForConcreteType();

You just have to create the IFooFactory interface with a method returning IFoo, and the rest is done for you by the library. You can resolve IFooFactory and use it to create IFoo objects straight away.