Minutes of DFDL working group call 23rd Aug 2007

Minutes Attendees: Geoff Judd, Steve Hanson, Simon Parker a) Discussed Mike's length proposal #2: Length: Plan A prefered - Noted that decoupling length and lengthUnits allows each to be specified at different scopes (pros and cons to this) Occurs: Plan C discussed and preferred in principle to Plans A and B. However: - What happens when we have both an occurs separator and a stop value, eg, a,b,c,d,, - it looks like occursKind can't handle this - Currently dfdl:length can not be used to define the length of an enclosing group, only a simple value - Not clear therefore that the 'Number of occurrences defined by size of bucket' is supported? b) Discussed Mike's opaque proposal #2 - Looks good - Need a description of modelling an array of bits where overall length not a multiple of 8 bytes - no simple type for a bit - Therefore need to state how this is supported using hexBinary or base64Binary (pad with 0's on parse, lose trailing 0's on write) Regards, Steve Steve Hanson WebSphere Message Brokers Hursley, UK Internet: smh@uk.ibm.com Phone (+44)/(0) 1962-815848 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
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Steve Hanson