resource identifiers

[Tony Linde]

> Not so fast, fella!

Too late - home already :)

> Otherwise, it is a little harder 
> (unnecessarily so) to 
> tell that the following are the same:
> 
>   ivo://www.ncsa.uiuc.edu/ADIL/SIA/targeted?95.DR.01.01.fits&wibble
>   ivo://www.ncsa.uiuc.edu/ADIL/SIA/targeted?wibble&95.DR.01.01.fits

But order need not be significant if you allow different keys:

  <ResourceID>
    <AuthorityID>www.ncsa.uiuc.edu</AuthorityID>
    <ResourceKey>ADIL/SIA/targeted</ResourceKey>
    <Record>
      <Key1>95.DR.01.01.fits</Key1>
      <KeyX>wibble</KeyX>
    </Record>
  </ResourceID>

ivo://www.ncsa.uiuc.edu/ADIL/SIA/targeted?Key1=95.DR.01.01.fits&KeyX=wibble

> Generic VO software needs at least to know how to pull out 
> the components to create the URI version.  

But we have defined that. The <Query> or <Record> portion is constructed
using the 
  ?keyword=value&keyword=value&...

If you have to know to put the <Record> after the '?' and the <key> bits
separated by '&' then it is no different to knowing to construct
?keyword=value&keyword=value&... It is just part of understanding the
namespace.

Off to have dinner now...

Cheers,
Tony. 

> -----Original Message-----
> From: Ray Plante [mailto:rplante at poplar.ncsa.uiuc.edu] 
> Sent: 23 May 2003 20:13
> To: Tony Linde
> Cc: registry at ivoa.net
> Subject: RE: resource identifiers
> 
> 
> On Fri, 23 May 2003, Tony Linde wrote:
> > Aaarrrgghhh - need to go home!
> 
> Not so fast, fella!
> 
> > I don't know about this - is there a problem with 'any'? As long as 
> > the resource knows what to do with it, does it matter what 
> goes in the 
> > <Query> structure?
> 
> Generic VO software needs at least to know how to pull out 
> the components to create the URI version.  It is best if the 
> markup is defined in the VOResource schema standard XML 
> parsers can do the parsing.  
> 
> I think we agree on the concept; it's more just a matter of syntactic 
> sugar, as they say.  An alternative might be:
> 
>   <ResourceID>
>     <AuthorityID>www.ncsa.uiuc.edu</AuthorityID>
>     <ResourceKey>ADIL/SIA/targeted</ResourceKey>
>     <Record>
>       <Key>95.DR.01.01.fits</Key>
>       <Key>wibble</Key>
>     </Record>
>   </ResourceID>
> 
> I wouldn't worry about the tags for the components being all 
> the same.  
> Order is preserved in parsing, and I think we need to mandate 
> that order 
> is significant.  Otherwise, it is a little harder 
> (unnecessarily so) to 
> tell that the following are the same:
> 
>   ivo://www.ncsa.uiuc.edu/ADIL/SIA/targeted?95.DR.01.01.fits&wibble
>   ivo://www.ncsa.uiuc.edu/ADIL/SIA/targeted?wibble&95.DR.01.01.fits
> 
> BTW: yes, I think it is fine to drop the "ivo://" from the 
> contents fo 
> <AuthorityID>.
> 
> Now you can go home.
> 
> cheers,
> Ray
> 
> 
> 
>