Simon sent a marked up document a few weeks back (forwarded in this
email) and the comments he made might be discussed this week if there is
a quorum. E.g., he suggests reformulating the properties we use for length
along the lines originally suggested by Kris Rose, i.e, eliminate the separate
lengthUnits property to reduce coupling. Somehow Simon's version seems
simpler though. There
are other interesting things as well.
...mikeb
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@us.ibm.com
508-599-7046
----- Forwarded by Mike Beckerle/Worcester/IBM on 06/27/2007 09:56 AM -----
"Simon Parker"
<simon.parker@polarlake.com>
06/20/2007 09:52 AM
To
Mike Beckerle/Worcester/IBM@IBMUS,
"Martin Westhead" <westhead@avaya.com>
cc
Subject
DFDL specification comments
Good afternoon.
As long promised, I've read the specification and embedded some comments
and suggested corrections with 'Track changes' switched on.
I have some observations that don't fit well in those little yellow boxes,
so I hope to air them on the wiki.
I see significant opportunities for simplifying the language and its specification
in the area would call 'composability' (encompassing 'Kernel DFDL' and
'Layers'). In short: find a general way to define complex structures as
groups of simple fields.
I've already offered to try to find an alternative technique for specifying
parser semantics, but haven't made much progress with that yet.
Some ideas occurred to me as I read about defaults, null values and so
on. It's a smaller topic and maybe an easier starting point, so I created
a wiki page.
Like everyone, I've not much time to devote to this interesting and worthwhile
project. My contributions may seem sketchy, terse or ragged, but they're
well meant.
More later,
Simon
Simon Parker
Software Consultant
PolarLake
80 Harcourt Street
Dublin 2, Ireland
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