Open Grid Forum: Data Format Description Language Working Group Weekly Working Group Conference Call 14:00 GMT, 04 February 2009 Attendees Alan Powell (IBM) Mike Beckerle(Oco) Steve Hanson (IBM) Dave Glick (drac) 1. XSD 1.1 SH and AP have scheduled a call with Sandy for this Friday 2. Welcome David Glick MB welcomed David Glick to the WG. David gave some background to his interest in DFDL. He is currently leading a SBIR project for the US Navy which involves efficiently parsing binary network data. DG will review draft 033 and submit comments 3. Escape Schemes Further discussion of proposal distributed by AP, in particular scanning/skipping known length text fields. SH and AP pointed out that the (assumed) speculative parsing behaviour required that known length text fields needed to be scanned if terminating syntax was in scope so last week's proposal was not correct. AP/SH to write up description of speculative parsing, scanning, escaping text fields. Need to discuss if comment escapes should be supported. 4. Calendar/Number formats AP raised question about whether locale or specific properties should be used to define properties such as decimalseparator in numberFormat and langauge in calendarFormat. Decided that specific properties should be used as it gave more control and didn't require users to 'find' the correct locale for a format. 4. AOB Next call 11 February 14:00 Meeting closed, 15:00 GMT Actions raised at this meeting No Action 031 DG: Review dfdl v033 Current Actions: No Action 012 AP/SH: Update decimalCalendarScheme 10/9: Not allocated yet 17/9: No update 24/9: Add calendar binary formats to actions 22/10: No progress 16/1: proposal distributed and discussed. Will be redistributed 21/1: add locale, 04/02: changed from locale to specific properies 020 SH: Resolve packedDecimalSignCodes behaviour depends on NumberCheckPolicy 22/10: No progress 10/12: added how to decide to overpunch and sign position 023 MB: Review Schema 1.1 29/1: AP and SH to talk to Sandy Gao 04/02 Call arranged for Friday 024 String XML type 025 Escape schemes 21/1: discussed requirements 04/02: AP/SH to describe behaviour for known length text fields. Need to discuss if comment escapes should be supported. 026 SH: Envelopes and Payloads 027 Property precedence tables 028 Variable markup 029 valueCalc (output length calculation) Closed actions: 034 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) 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) - 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 * 025 Augmented infoset and unparsing (Alan) added but needs work 026 Remove duration complete - specification updated 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