[This message was posted by David Rosenborg of Pantor Engineering AB <[email protected]> to the "FAST Protocol" discussion forum at http://fixprotocol.org/discuss/46. You can reply to it on-line at http://fixprotocol.org/discuss/read/1c77f9ee - PLEASE DO NOT REPLY BY MAIL.]
Hi, The current proposal is silent on the use of the presence attribute on individual fields in bit groups. It is also silent on the use of the presence attribute on the bit groups as a whole. These issues will be addressed in an upcoming update to the proposal. The current intention is that both the bit group itself and its individual fields will have nullable representations, that is, will allow the presence attribute in the template. The field operator is for the bit group as whole. Field operators will not be allowed for individual bit group fields. /David > Hi, > > I am attempting to add preliminary support for bit groups and noticed that > within the latest version of the FAST 1.2 extension proposals, it is not > specified whether or not a bit group field supports a presence attribute. > Are presence attributes supported for bit groups? > > Also, the bit group proposal implies that the bit group field does support > (some) field operators as a copy operator is present within the syntax > examples. > > If field operators are supported as well as a presence attribute, it seems > like a NULL representation is required for bit groups. How should NULL be > represented? Also, what is the interaction of the bit group's presence > attribute and field operator, if any, with fields within the bit group? > > Thanks, > > Donnell Bell [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.
