[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/d98cea39 - PLEASE DO NOT REPLY BY MAIL.]
Yes it has a bit for an implicit copy operator for the TID. /David > I need some clarification concerning the handling of the Template ID for > a dynamic template reference. > > Given the following two quotes from FAST[sm] Specification 1.x.1: > > From: Section 6.4 Template Reference Instruction > > A dynamic reference specifies that a presence map and a template > identifier are present in the stream. The processing continues with the > template indicated by the identifier as the current template. The > representation in the transfer encoding is a segment. > > From: Section 10 Transfer Encoding > > A segment has a header consisting of a Presence Map followed by an > optional Template Identifier. The segment has a template identifier > either if it is a message segment, or if the segment appears as the > result of a dynamic template reference instruction. A template > identifier is encoded as if a copy operator was specified. The > operator uses the global dictionary and has an internal key common to > all template identifier fields. This means that a segment with a > template identifier does not always contain the template identifier > physically. However, the first bit in the presence map is allocated by > its copy operator. > ========================== > The question is, does the presence map for a dynamic template contain a > bit for the template ID of the dynamic template? Or to ask the same > question another way, is the TemplateID of a dynamic template encoded as > if a copy operator was specified? > > I would tend to think the TemplateID does use a presence map bit except > for the phrase that says, "... a presence map and a template identifier > are present in the stream" which is not always true for the template > identifier if the copy operator is being used. > > Thanks, > > Dale > -- > Dale Wilson Principal Software Engineer Object Computing, Inc. > (www.ociweb.com) Lead developer for QuickFAST (http:www.quickfast.org) [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]. For more options, visit this group at http://groups.google.com/group/fix-protocol?hl=.
