[This message was posted by Russell Curry of Assimilate Technology, Inc. <[email protected]> to the "5.0 SP2 Feedback" discussion forum at http://fixprotocol.org/discuss/121. You can reply to it on-line at http://fixprotocol.org/discuss/read/1ebc751b - PLEASE DO NOT REPLY BY MAIL.]
> Russ, > > There is a separate FIXT.1.1 repository as of this release of FIX. > > We have contemplated removing the standard header and trailer from > FIX.5.0. I am not sure this is a good idea. So the concept here is that > FIXT has its own header- and the standard header actually spans the > session layer and the application layer (by spanning I mean it should be > presented and accessible at the application level). So what is need to > maintain compatibility with previous versions of FIX is a mapping table > between the FIXT Standard Header and FIX.4.0 through FIX.5.0 Standard > Headers. True, this mapping is largely trivial, but it is still an > important mapping. > > With the FIXT.1.1 Errata that was released coincidentally with > FIX.5.0SP1 we added this mapping table as an appendix to the FIXT.1.1 > specification. FIX implementors supporting FIX.5.0 and Application > Version Independence should reference this table in mapping from FIXT > based messages back to their APIs for previous versions of FIX. (You can > support FIX.5.0 without supporting application version independence - > though as a software vendor - you are probably better positioned if you > offer full compatibility with the standard instead of subset). > > I hope this helps. Hi Jim, Thanks - that makes sense. Our implementation of 5.0 completely separates the session from the application layer, so the explicit references in the repository just made me wonder if there was some other wierdness in store. Is the mapping table going to be integrated into the repository in the future - so validation/correctness data can be generated automatically from each release of the repository rather than having to manually enter it from a document? Cheers, Russ [You can unsubscribe from this discussion group by sending a message to mailto:[email protected]] --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Financial Information eXchange" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/FIX-Protocol?hl=en -~----------~----~----~----~------~----~------~--~---
