[This message was posted by Hanno Klein of Deutsche Börse Systems <[email protected]> to the "General Q/A" discussion forum at http://fixprotocol.org/discuss/22. You can reply to it on-line at http://fixprotocol.org/discuss/read/96c40655 - PLEASE DO NOT REPLY BY MAIL.]
Although I believe these are good ideas I don't think the proposal at hand should be used to include them. Some of them were actually discussed in the Global Exchanges & Markets Committee and discarded for the time being. 1. It would significantly extend the scope of the current proposal, thus requiring more than incremental time and effort 2. The inclusion of regular expressions to link repeating group instances to one another represents a high level of complexity. I don't think we have a precedent in FIX for this so that such an extension could be fundamental and require extra care in designing. I am not trying to shoot it down in general but think it deserves a separate gap analysis specifically aimed at how to express relationships between repeating group instances. So far, only the order must be preserved and is significant, e.g. within MarketDataIncrementalRefresh (instrument can be omitted and then defaults to the one in the previous instance). Bilateral agreement can add simple releationships such as "all instances must be fulfilled" or "at least one of the instances must be fulfilled", e.g. for matching instructions. Regards, Hanno. > Consider: a. operations within and between groups (e.g. AND, OR, > >, <, etc.) > b. sub-groups or open/close parenthesis group entries c. alternatively > use ExecInst with pre-define formula formats (e.g. > DNM(BAIK,[59]=3)&&DNM(XLSE,[59]=0) [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 -~----------~----~----~----~------~----~------~--~---
