Web service standards question

[Martin Hill]

Attached is *a* version of the SkyNode WSDL as an example.

Hans-Martin Adorf wrote:

> Martin,
> 
> we are getting closer to what I want. So, you are saying that I should 
> have a look at the SkyNode WSDL. Where exactly would I find the latter?
> 
> Hans-Martin
> 
> 
> Martin Hill wrote:
> 
>> Hans-Martin Adorf wrote:
>>
>>> Wil,
>>>
>>> your comments are appreciated. If, for the moment, I follow your 
>>> suggestion, how do I then specify that the result of calling a SOAP 
>>> service is a VOTable? Am I supposed to specify that the result will 
>>> be a String, and it will be up to the receiver to use the latest 
>>> VOTable parser in order to decode the VOTable?
>>
>>
>> That's one way.  You can also...
>>
>>>
>>> OK, and then if SOAP by itself does not provide a table model, but we 
>>> in the VO community have one (implicitely through VOTable) or more 
>>> (excplicitly inside of Toptable, SAVOT or the GAVO table system), why 
>>> don't we go ahead and augment the SOAP standard? Id' really like to 
>>> download a WSDL and submit it to myWSDL2Java compiler, and start 
>>> using the client.
>>
>>
>> ...you can also 'import' the VOTable schema into your WSDL definition 
>> (The SkyNode WSDL is, I think, an example), and then your WSDL2Java 
>> generator will build you a complete VOTable object model too. This is:
>>
>> Good) because your WSDL 'contract' defines that you expect the 
>> parameter to be a VOTable, not just a string.
>>
>> Iffy) because you get an object model built for you by the generator, 
>> but sometimes this needs some hand-tweaking
>>
>> Iffy) because you may not want the VOTable to be 
>> marshalled/unmarshalled into an object model.  For example, if your 
>> service is going to transform it using XSLT, there is a big Waste of 
>> Power in converting it to an object model and back again, especially 
>> if it's a Really Big Huge table.
>>
>>
> 
> -- 
> Dr. Hans-Martin Adorf • Max-Planck-Institut f. extraterrestrische Physik 
> • Giessenbachstr. 1 • D-85741 Garching b. München • Germany
> Phone: +49-89-30000-3352 • Fax: +49-89-30000-3404 • E-Mail: 
> adorf at mpe.mpg.de • WWW: http://www.g-vo.org

-- 
Martin Hill
www.mchill.net
+44 7901 55 24 66
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