Hi all,
currently the system I am working on is layered like this
- Web UI
- Application
- Domain
- Infrastructure
In which layer would I put the specification implementations? Infrastrucutre?
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96answers:
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A:
Specifications are part of the Domain Model.
This pattern is described in Domain-Driven Design, and since this book deals explicitly with Domain Modeling, I think it's fair to say that it belongs in the Domain Layer.
Mark Seemann
2010-01-06 10:43:35
Yes, the interface is located in the domain layer. But I am talking about the actual implementation that is being injected.
Chris
2010-01-06 10:58:24
I would still put it in the Domain Model. However, it may use injected dependencies that are implemented elsewhere. See here for an example of what I mean: http://stackoverflow.com/questions/1264944/refactoring-domain-logic-that-accesses-repositories-in-a-legacy-system/1265055#1265055
Mark Seemann
2010-01-06 11:16:06