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@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