Open Grid Forum: Data Format Description Language Working Group

Weekly Working Group Conference Call
13:00 GMT, 17 September 2008


Attendees
Mike Beckerle (Oco)

Steve Hanson (IBM)
Alan Powell (IBM)


1. Visit actions
Actions updated below

2. Hidden proposal
Agreed to adopt proposal for hidden element to be a reference to a group.
Decided not to have dfdlHidden=true on referenced group/sequence be more composable.

3. WTX unresolved items.


3,4 agreed to drop textCharacterSize and DBCSOnly from dfdl V1

7  Padding; deferred pending proposal from IBM (WTX)

9 Add PadRequiredOnInput to meet WTX requirement - resolved

17 finalTerminatorCanBeMissing, finalPostFixSeparatorCanBeMissing.
Agreed to drop these properties and change the default syntax of terminator and postFixSeparator to be optional on parsing the last element of a sequence but always written on unparsing.

remaining items to be discussed on next call.
 
4. AOB
Next call 24th Sept

Meeting closed, 14:05 GMT

Actions raised at this meeting
No
Action
016
AP: add hidden changes to spec
017
All: Review EndOfData changes

Current Actions:
No
Action
003
AP: Update spec from WTX document
13/8:  All resolved issues have been added to spec. Remaining unresolved items need discussion
10/9: Alan will pull out the remaining unresolved items and circulate for discussion next week
17/9: Doc distributed and partially discussed
004
MB: Mike will also author a new section in response to comments from Sandy Gao and Suman Kalia, explicitly connecting syntax with DFDL semantics
16/7: no progress
10/9: Mike not convinced this is necessary. Steve to talk to Sandy to see if it is needed for any IBM implementation that extends the existing XML parsing framework
006
SH: Distribute hidden proposal
16/7: Done. MB to review
13/8: MB to review
10/9: Mike has located this and will review
17/9: Proposal agreed
007
AP: enum + expression wording
13/8: no progress
10/9: No update
17/9: No update
011
SH: Update decimal supplement
13/8: Editorial changes needed.
10/9: Alan to incorporate into main spec
17/9: No update
012
??: Update decimalCalendarScheme
10/9: Not allocated yet
17/9: No update
013
MB: Description and use cases for EndofData syntax
10/9: Steve didn't receive this mail, he now has and will review
014
SH: Use cases for lengthKind pattern on binary fields.
10/9: Not done
17/9: No update
015
AP: removed extended floats
10/9: No update
17/9: No update

033 Work items:
No
Item
001
String XML type (Ian P) - Apr 30, 2008
002
Escape schemes (Ian P) - Apr 30, 2008
003
Variables - ??, 2008 (Mike)
004
Selectors (Suman) - Apr 30, 2008
005
Improvements on property descriptions - ??, 2008 (All - split TBD)
006
Envelopes and Payloads (Steve) - Apr 30, 2008
007
(from draft 32) valueCalc (Mike) - ??, 2008 *Mostly complete*
008
(from draft 32) Property precedence for writing (Steve) - *complete but under review*
009
(from draft 32) Variable markup (Steve) - Mar 31, 2008 *proposal needs writing up*
010
(from draft 32) Assertions, discriminators and choice, including discussion of timing option (Suman) - Mar 31, 2008 * in progress *
011
(from draft 32) How speculative parsing works (combining choice and variable-occurence - currently these are separate) ??, 2008 (IBM) * in progress *
012
(from draft 32) Reordering the properties discussion: move representation earlier, improve flow of topics ??, 2008 (Alan) * not started *
013
(from F2F) New scoping rules
014
(from F2F) Occurs, OccurSeparator changes
015
(from F2F) choices and Output (Mike)
016
(from F2F) xpath forward references (Alan) *complete*
017
(IBM WTX review) Minor agreed updates (Alan) *complete*
018
(IBM WTX review) Review generateNewLine (Alan) *complete*
020
(IBM WTX review) Special value for zero seen eg 'zero'. (Steve)
021
(IBM WTX review) 'EndOfData' changes (Alan)
022
(IBM WTX review) Unresolvable choices - infoset changes *complete*
023
(IBM WTX review) separatorKind=’prefix’ ‘infix’ or ‘postfix’ (Alan)
024
(IBM WTX review)  StopValue clarification (Alan)  
025
Augmented infoset and unparsing (Alan)  



Alan Powell

MP 211, IBM UK Labs, Hursley,  Winchester, SO21 2JN, England
Notes Id: Alan Powell/UK/IBM     email: alan_powell@uk.ibm.com  
Tel: +44 (0)1962 815073                  Fax: +44 (0)1962 816898






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