[ogsa-wg] RE: GRIDtoday Edition: Tony Hey: 'Challenging Times for GGF & Standards'

[David Snelling]

Frank,

I like the way you put this:

On 1 Mar 2005, at 7:08, Frank Siebenlist wrote:

> ...but if we model the usage patterns with wsrf, and wsrf and 
> ws-transfer are doing conceptually the same thing, isn't the ogsa-wg 
> doing just that: it uses an abstraction that can be used to describe 
> the relevant usage patterns without losing any generality.

I full agree.

I think a very interesting study, for starters, would be to implement 
the WSRF Resource Properties interfaces (in other words - the OGSA 
Abstraction Layer for State Access) in terms of WS-Transfer. The 
reverse is already possible in WSRF-RP trough the 
GetResourcePropertyDocument (equivalent to the WS-Transfer GET).

I'm sure the rest of the lowest OGSA abstraction layers maps to other 
infrastructures just as easily.

> The idea of inventing "yet an other abstraction layer" doesn't sound 
> very productive.

Agreed. But now that this lowest layer is well established, higher 
level services need to be constructed, e.g. for data access, job 
submission and management, .... These higher levels will be more 
isolated from the lower level details, but much simpler to construct 
given that these lower layers are in place.

-- 

Take care:

     Dr. David Snelling < David . Snelling . UK . Fujitsu . com >
     Fujitsu Laboratories of Europe
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