[This message was posted by Dale Wilson of Object Computing, Inc <[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/bce1f54a - PLEASE DO NOT REPLY BY MAIL.]
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=en.
