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RobertoI (29) [Avatar] Offline
#1
Matt,

I have finished reading chapters 3, 4 and 5. The content is very clear and the code examples make the concepts even clearer.

I have just a minor remark. In chapter 3 your examples describe very clearly PostSharp and Castle DynamicProxy different ways of implementing AOP, however I have found a disconnect between the descriptions of the two techniques (attribute based vs dynamic decorators) with no real comparison and explanation of the relative advantages and disadvantages. For example, I would have expected something on the lines that (PostSharp) attributes clearly document the aspects bound to a method, but that on the other hand are more invasive and hardcode such mappings. Or the fact that (Castle DynamicProxy) dynamic decorators are more flexible and dependency-injection friendly, but on the other hand "hide" the aspect mappings in the composition root.

Have you planned to compare and contrast the two techniques in the next few chapters? Or do you think chapter 3 could be a good candidate?

Roberto
matthew.groves (46) [Avatar] Offline
#2
Re: Comments on chapters 3, 4 and 5
Roberto,

It's a good point, but you appear to have broken it down quite well yourself without any help from the author smilie

I suppose it might be good to talk about explicitly in chapter 7.

Your remark about "hiding" the aspects in the composition root can also be applied to PostSharp as well: the aspects can be "hidden" in a central location by using assembly-level attribute multicasting. I just haven't done that in any examples before chapter 8 (to keep the examples simple).

-Matt