[DFDL-WG] (no subject)
Alan Powell
alan_powell at uk.ibm.com
Thu Jun 26 10:49:44 CDT 2008
Open Grid Forum: Data Format Description Language Working Group
Weekly Working Group Conference Call
14:00 GMT, 25 June 2008
Attendees
Mike Beckerle (Oco)
Steve Hanson (IBM)
Alan Powell (IBM)
1. Infoset order
It was agreed that the infoset needs to be in the schema order otherwise
it would not be possible to know if elements were missing which needed
defaulting on unparsing.
2. Unparsing, Augmented infoset.
Discussed latest version of description of unparsing including the
introduction of the 'augmented infoset' concept. Agreed it can be added to
spec.
3. Byte Order Mark.
Reviewed Unicode documents on BOM and concluded that DFDL should provide
no special treatment so it will be treated as a normal code point. If a
document contains an optional BOM then it should be defined as an
optional, hidden field and an expression used to set the dfdl:byteOrder
property.
4. enums and expressions
During the BOM discussion it was noted that current dfdl syntax rules do
not allow expressions for enumerated properties. AP to make a proposal.
5. Hidden element syntax
Discussed IBM's outline proposal for using groups to define hidden
elements which would allow their syntax to be validated by an XML parser.
Agreed in principle, SH to circulate detailed proposal.
6. Gridforge
Gridforge seem to be working again so will not look for alternatives
7. AOB
MB on vacation for the next 2 weeks.
Meeting closed, 15:00 GMT
Actions raised at this meeting
No
Action
AP: update spec with unparsing and augmented infoset.
SH: Distribute hidden proposal
AP: enum + expression wording
Current Actions:
No
Action
MB: update outputvalueCalc doc
Done
AP: Send out updated work item list
AP: Update spec from WTX document
MB: Mike will also author a new section in response to comments from Sandy
Gao and Suman Kalia, explicitly connecting syntax with DFDL semantics
Alan Powell
MP 211, IBM UK Labs, Hursley, Winchester, SO21 2JN, England
Notes Id: Alan Powell/UK/IBM email: alan_powell at uk.ibm.com
Tel: +44 (0)1962 815073 Fax: +44 (0)1962 816898
Unless stated otherwise above:
IBM United Kingdom Limited - Registered in England and Wales with number
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Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU
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