validation of SIA 2

[François Bonnarel]

Dear all,
     Thank you Pierre for this validator. A few answers
On 22/02/2016 19:15, Pierre Le Sidaner wrote:
> Dear All
>
> I was working on the SIA2 validator on the last days
> I have a first version as a draft
> http://voparis-validator.obspm.fr
>
> I try it with the 3 examples taken from RFC Page 
> http://wiki.ivoa.net/twiki/bin/view/IVOA/Siav2RFC
> The SIA2 document is confusing because it refer to ObsCore without 
> telling exactly what is mandatory.
> Moreover I have question about SIA V2 and the implementations
>
> * non of them support Inf as > or < of as it's proposed in the last 
> documentation of sia2
> like BAND=300 +Inf
>
> * could you please reference the schema in votable to validate it, 
> something like
> xsi:schemaLocation="http://www.ivoa.net/xml/VOTable/v1.3 
> http://www.ivoa.net/xml/VOTable/VOTable-1.3.xsd"
>
> * for Utype example use an extension in the Utype name like 
> obscore:Char.SpatialAxis.Coverage.Location.Coord.Position2D.Value2.C1
> but as the Utype come from Characterisation, is it relevant to add 
> obscore, specially taking into account that Utype should be normalized.
Characterisation  is a class or a package of OBSCORE (and is allready in 
Cube DM draft) SO this is correct I think and consistent with Obscore.
>
> * for request in the query. In the example inside the document, 
> REQUEST take the value query. Nothing in the documentation is related 
> to DALI for that. 
> http://dalservices.ivoa.net/sia_b?REQUEST=query&POS=CIRCLE 180.475 
> -18.70 0.01&BAND= 0.0008 0.0009&TIME= 55708 55710&COLLECTION=ALMA. It 
> should be more explicit in the documentation. And one ref 
> implementation does not support this parameter/value.
SIAV2.1 will have several REQUEST values. So I think REQUEST=query is 
the default but Pat will have the last word with his DALI editor hat.
>
> * what about datatype and xtype are they both mandatory in the votable 
> output ? for s_region, s_fov ... in Obscore document there is both 
> adql:REGION and AstroCoordArea does both are acceptable.
Yes the idea (in Obscore) was that thesze valeu may come from TAP/ADQL 
word (an so it jsutifies     adql:REGION) but that stc:AstroCoordArea is 
more complete. Obscore 1.1 is currebtly in discussion on the DM list 
(with bcopy to DAL). So this is the right place to discuss this point.
> VOTable schema should include a list of xtype if it's possible
>
> * don't you see any problem as s_resolution have datatype=float and 
> xtype=adql:DOUBLE and sometime double in obscore doc.
Yes. Here SIAV2 has to be fixed. (see Pat's email)
Cheers
François

>
> * what should I do with MAXREC, I mean what to test ?
>
>
>
> The 3 examples I took where
>
> http://www.cadc-ccda.hia-iha.nrc-cnrc.gc.ca/sia/v2query?
> it was my reference for test, if you try you must remove all the Inf
>
> casda implementation
> http://casda.csiro.au/casda_vo_tools/sia2/query
> does not support Request=query,
>
>
> VAO implementation
> http://vaosa-vm1.aoc.nrao.edu/ivoa-dal/siapv2-vao/sync?
> problem with DTD on votable
>
>
> Please give feedback about the validator, I am sure there is some 
> bogus left.
>
> Regards
> Pierre
>