ansaurus

Question

Answer 1

A:

Yes, I have run into this problem, but I have fixed it soon enough every time.

A good class naming convention can help. Avoid using the same name in classes across multiple layers.

Alternatively, you can use namespace aliases, so that you would be using, for example:

services::IAccountService
domain::IAccountService

Does this help?

CesarGon 2009-12-10 12:29:36

Haha! Yes this does help but maybe you could give me an example.Let's say (for simplicity) I have 3 layers:(1) Domain\Domain.Contracts(2) Services\Services.Contracts(3) PresentationIf I have a User object in Domain and IUser and/or UserDto what would you name these objects in the other layers?

devlife 2009-12-10 21:49:18

Well, I would need to know exactly *what* you are naming in order to determine the optimal name for it. :-) Things such as "Contract", "User", etc. sound very much like problem-domain concepts, which I would suggest to place in a single business-logic layer. You don't want to replicate these classes elsewhere. You could have classes such as Business.Contract and Business.User. (TBC)

CesarGon 2009-12-10 22:50:54

On the presentation layer, you could have, for example, Presentation.ContractDialog or Presentation.UserWindow. A "contract dialog" is a dialog box that displays a contract; you wouldn't have Presentation.Contract because contracts themselves are modelled *only* in the business logic layer. Does this make sense?

CesarGon 2009-12-10 22:51:26

Thanks CesarGon. This does make sense. After some studying / playing around I figured out how I'll do this. My real issue was that I was passing dtos between the domain and services layers. Instead I'm passing interfaces between domain and services layers and having the domain implementation internal. Then I have a dto in the services layer which also implements the domain interface. Thanks for your help.

devlife 2009-12-11 12:49:07

You're most welcome. :-)

CesarGon 2009-12-11 14:19:17

ansaurus

tags:

views:

answers:

Name collisions between layers

related questions