WS-Addressing & accrefs

[Guy Rixon]

Doug,

I was referring the the accref used in getImage.

I agree that we might have a query part as a SOAP service with a HTTP-get
service as the target of the accref.  I realise that this covers most of the
use cases for SIAP.  However, there are some edge cases which may become
important and for these we will probably need a SOAP service as target of an
accref.

Best way to explain what I mean is a document I've been preparing:

http://wiki.astrogrid.org/bin/view/Astrogrid/AccrefsInWsResource

I was going to open this to the group next week when I'd improved it a bit but
maybe it's best that you see the first draft.


On Mon, 26 Jan 2004, Doug Tody wrote:

> Guy -
>
> Are you referring to the actual "getImage" acref in SIA, or to the SIA
> query?  The part that is most naturally cast into a web-service is the
> query since it is a request with parameters.  The acref is, at least in
> the current form of SIA, is a simple link which is opaque to the interface,
> and does not have any (explicit) request parameters.  If it had arguments
> it would be a natural to promote to a web-service interface, but so long
> as it remains a simple static link this seems unnecessary.
>
> Since the query is basically a request with arguments it would be easy
> to have equivalent GET, POST, and SOAP requests.  The query response,
> a VOTable document, could possibly be identical in all cases.
>
> 	- Doug
>
>
>
>
> On Mon, 26 Jan 2004, Guy Rixon wrote:
>
> > Hi,
> >
> > we will need, sometime soon, a web-service equivalent of the access-reference
> > in SIAP.  The current accref is a HTTP-GET URL with request parameters
> > embedded, so doesn't work for SOAP services.
> >
> > The recent proposed-standard WS-Addressing
> > (http://www-106.ibm.com/developerworks/webservices/library/ws-add/)
> > defines an XML vocabulary for representing WS endpoints.  It's designed to add
> > routing information to SOAP headers, but we could use it to add accrefs to
> > SOAP bodies. Possibly better than writing our own standard.
> >
> > Guy Rixon 				        gtr at ast.cam.ac.uk
> > Institute of Astronomy   	                Tel: +44-1223-337542
> > Madingley Road, Cambridge, UK, CB3 0HA		Fax: +44-1223-337523
> >
> >
>

Guy Rixon 				        gtr at ast.cam.ac.uk
Institute of Astronomy   	                Tel: +44-1223-337542
Madingley Road, Cambridge, UK, CB3 0HA		Fax: +44-1223-337523