WS-Addressing & accrefs

[Doug Tody]

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
> 
>