I am trying to design a simple FIX message encoder and decoder to encode (convert to FIX) and decode (convert from FIX) my business domain Order objects. I have designed something, but I am not able to achieve the beautiful design I want. Wanted to see if others who have experience building this kind of things have any better design ideas.
This is what I roughly have: a business Object Order, QuickFIX object Message. I need to generate NewOrder/Cancel/Replace messages and the message could be different for different exchanges. I can have ReplaceEncoder --> NewOrderEncoder --> AbstractEncoder, CancelEncoder --> AbstractEncoder. But if I want another dimension to this, like having custom message generation for different exchanges, then it results in too many combinations of hierarchies.
Is my only bet is to mundanely write different code for different exchanges? How others achieve this? Thanks.