[DFDL-WG] DFDL: Minutes from OGF WG call, 12 Mar 2008

[Ian W Parkinson]

Open Grid Forum: Data Format Description Language Working Group

Weekly Working Group Conference Call
17:00 GMT, 12 Mar 2008


Attendees
Simon Parker (PolarLake)
Ian Parkinson (IBM)
Alan Powell (IBM)

Apologies
Mike Beckerle (Oco)
Steve Hanson (IBM)
Suman Kalia (IBM)


1. UML Descriptions of Schema Components

Followng recent reviews, Simon has distributed simplified versions of his 
schema component diagrams. This now uses a single diagram to describe the 
entire DFDL language. Concepts found in XML schema (XSD) are colored 
yellow, to distinguish from concepts that would not be found in XML 
schema, which are left white.

A second diagram is used to provide an informal overview of the language. 
Simon has updated this to use the same wording and style as the formal 
diagram, but suggested the group may prefer the existing diagram in the 
current DFDL specification draft.

Simon raised a question regarding the relationship of "Term" and 
"Particle" - his diagrams allow for a Term that is not part of a Particle, 
and he wondered whether this was correct. The diagrams are otherwise ready 
to drop into the specification, but Simon will distribute source files 
which can be edited in UMLet, in case any further changes are necessary.


2. Other business

As per his recent email to the DFDL-WG mailing list, Simon and PolarLake 
are stepping back from active participation in the DFDL working group, 
though Simon will continue to monitor the DFDL-WG mailing list informally. 
On behalf of the group, Alan thanked Simon for his participation, and 
confirmed that Simon and PolarLake would still like to be listed as 
contributors to the final draft of the DFDL specification.

Meeting closed, 17:25 GMT



Ian Parkinson
WebSphere ESB Development
Mail Point 211, Hursley Park, Hursley, Winchester, SO21 2JN, UK





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