The above is an extract of a diagram I have (not made by me!)

But to those of you who understand, what does it show in terms of classes and interfaces and what derives from what and from which interfaces?

I want to hear your thoughts. This is potentially for a WCF contract. My thinking is that the contract will be the interface (IProductMessage)

it doesnt matter what this is trying to represent in terms of "real life" but just want to know what you think about the classes and structure and if it makes sense to you and if so, what it is.


Also, for data coming in to the WCF contract, how would it be possible to determine the concrete type of class from the above, if we are getting the IProductMessage? I guess there would be some internal logic to determine based on the "ProductHeader" perhaps on what type of class it is?

Anyway - your thoughts!