GGF16 in Tokyo, Japan, 11-13 May 2006
Amy Krause
EPCC, The University of Edinburgh
GridNet ID: 105
Working Groups
Data Area Meeting
All data area groups reported on the current status of their work, including the DAIS
WG.
DAIS WG (2 meetings)
Update to the community: Norman Paton presented an overview of the WS-DAI
specifications and the progress since GGF 15. A new document has been added to
gridforge: “Interoperability Plan for DAIS Working Group Specifications”, discussing
how interoperability between DAIS implementations can be verified.
An implementation of WS-DAIX built on top of OGSA-DAI was demonstrated by
Steven Lynden. The implementation highlighted several issues and comments on the
WS-DAIX specification which are going to be addressed after GGF, probably in June.
RDF implementations of the WS-DAI specification were presented by groups from
UPM (Madrid) and AIST (Japan). The DAIS charter will be amended to include an
RDF realisation of the specification. The RDF implementers have organised a F2F
meeting taking place in Edinburgh after GGF. I have spoken to members of these
groups.
Further Actions:
The groups involved in the RDF realisation have arranged a F2F meeting in
Edinburgh in June. I have registered and am planning to attend this event.
Comments on WS-DAI received during the public comment period will be addressed
by the editors.
ByteIO WG
An update on the status of the ByteIO specifications.
Michel Drescher demonstrated his implementation of the ByteIO specification.
An interoperability meeting involving those groups who have done an implementation
of ByteIO was agreed upon, although no specific dates were planned.
Unfortunately, Mark Morgan, who is an author of the spec and has also provided an
implementation, did not attend the meeting. During the last F2F (which I didn’t
attend) a quick interop test failed between my implementation and Mark’s.
Further Actions:
Plan an interoperability meeting between the implementers of the spec.
I have written a simple implementation of ByteIO giving access to a file system and I
am planning to incorporate this into OGSA-DAI for delivery of BLOBs from a
database or similar. I am hoping to have a working prototype of this by the interop
meeting.
There were some issues with interoperability with the implementation which I’ll have
to fix.
Converging Web Services Standards BOF
This was a meeting to inform the community about the convergence of the WSRF
specifications and the WS Management specifications. There was a lively discussion
about the convergence and migration issues. The OGSA-DAI team is concerned about
this as we have to migrate eventually to the merged standards.
This meeting was very useful as it gave an overview of what is going to happen and it
made me aware of the issues. The merger is not happening very soon, so it is more of
a long-term issue to be aware of in general.
Workshops
OGSA-DAI Technology Update
An OGSA-DAI workshop at which an overview of OGSA-DAI was presented and an
update on the features of the latest OGSA-DAI version.
Some interesting discussions incurred with current and prospective users of OGSADAI.
Data Access and Integration
In this workshop, eScience projects that are working on data access and integration
problems, especially from Asia, presented the current status of their work. This was
interesting mainly from an OGSA-DAI point of view. OGSA-DAI is being used by
many groups, especially in Asia.
Meetings
Michel Drescher/ByteIO
A follow-up to the ByteIO WG meeting with Michel Drescher in which we discussed
implementation issues. This was very useful.
Progress
WS-DAI specifications
The WS-DAI specifications which I have co-authored have been returned from the
GGF editor after the public comment period:
Web Services Data Access and Integration – The Core (WS-DAI) Specification
Web Services Data Access and Integration – The Relational Realization
Web Services Data Access and Integration – The XML Realization
A response to the comments that have been received during the public comment
period has been published on gridforge.
ByteIO comments
Issues and comments regarding the ByteIO specifications have been submitted to the
authors.