Open Grid Forum: Data Format Description Language Working Group Weekly Working Group Conference Call 13:00 GMT, 15 October 2008 Attendees Mike Beckerle (Oco) Alan Powell (IBM) Apologies Steve Hanson (IBM) 1. Decimal Supplement MB had reviewed last weeks proposal. Did not like scoping rules which are different from normal scoping rules. Agreed to not allow in-line syntax so no need for scoping rules. 2.Unordered Choice infoset order Previous call had decided infoset should be in order of data. SH pointed out that validation will fail unless sequenced data is in schema order. Agreed to change back to schema order. Document that data order can be achieved using an array of choice. Discussed changing to Schema 1.1 for updated syntax of xs:all which provides erquired syntax. Felt that is was too late to change now but IBM will talk to Sandy Gao to assess impact. 3. Selectors Discussed SKK's note and SH reply. Suggest simple syntax where ONE of the format statement on an item is used. Format which matching the selector will be be used otherwise if NONEof the format selectors match, the format with NO selector specified will be used. To be consistent ony ONE format statement will be allowed in a defineFormat. 4. Padding Agreed to restrict padding to string text variable length with minlength facet. No need for an extra property. 4. AOB Will discuss End of Data next week Next call 22st Oct AP will be away for the next 2 weeks. Meeting closed, 13:45 GMT Actions raised at this meeting No Action 022 SH: Talk to Sandy Gao to asses use of schema 1.1 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 15/10: All updateds complete excpet minlength 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 15/10: SH to talk to Sandy 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 15/10: spec updated. closed 012 ??: Update decimalCalendarScheme 10/9: Not allocated yet 17/9: No update 24/9: add calendar binary formats to actions 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 15/10: spec updated. closed 016 AP: add hidden changes to spec 017 All: Review EndOfData changes 018 AP: Agree padding to minimum length 15/10: agreed needs documenting 019 AP: document defineTextNumber etc 020 SH: resolve packedDecimalSignCodes behaviour depends on NumberCheckPolicy 021 AP: Document textNumberRepresenation and binaryNumberRepresentation 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 Unless stated otherwise above: IBM United Kingdom Limited - Registered in England and Wales with number 741598. Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU