[DFDL-WG] Grammar as adapted to infoset

Steve Hanson smh at uk.ibm.com
Fri Nov 16 10:28:16 CST 2007


Hi Mike

One extra thought post-call, caused by thinking about the FinalUnused part 
of a sequence. Some fixed length choices have a rule that each branch of 
the choice must be of equal length. This results in unused bytes for 
branches shorter than the maximum.  In a bitstream instance, a user will 
see these bytes. Perhaps the grammar should acknowledge their existence, 
even if there are no DFDL properties to express the bytes (like 
FinalUnused)?

Regards, Steve

Steve Hanson
WebSphere Message Brokers
Hursley, UK
Internet: smh at uk.ibm.com
Phone (+44)/(0) 1962-815848



Mike Beckerle <beckerle at us.ibm.com> 
Sent by: dfdl-wg-bounces at ogf.org
10/11/2007 00:16

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Subject
[DFDL-WG] Grammar as adapted to infoset







I took a crack at this. I ripped it out of the main document for faster 
review/turnaround. 

I think this matches the latest infoset email diagram. 



Mike Beckerle
STSM, Architect, Scalable Computing
IBM Software Group
Information Platform and Solutions
Westborough, MA 01581
direct: voice and FAX 508-599-7148
assistant: Pam Riordan 
                 priordan at us.ibm.com 
                 508-599-7046
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