How do I use the Decorator Pattern with Unity without explicitly specifying every parameter in the InjectionConstructor

Question

This helpful article from David Haydn (EDIT: scam link removed, it could have been this article) shows how you can use the InjectionConstructor class to help y

Answer 1

Another approach, thanks to a suggestion from @DarkSquirrel42, is to use an InjectionFactory. The downside is that the code still needs updating every time a new constructor parameter is added to something in the chain. The advantages are much easier to understand code, and only a single registration into the container.

Func createChain = container =>
    new LoggingProductRepository(
        new CachingProductRepository(
            container.Resolve(), 
            container.Resolve()), 
        container.Resolve());

c.RegisterType(new InjectionFactory(createChain));
Assert.IsInstanceOf(c.Resolve());