[occi-wg] Where is the scheme ?

Wed Apr 6 01:44:53 CDT 2011

On Wed, Apr 6, 2011 at 8:17 AM, Gary Mazz <garymazzaferro at gmail.com> wrote:
>
> I did find the reference to it in one of your emails from 2 years ago..Minor
> comments:
>
>> - why the purl.org/occi namespace? OGF has an established
>>   namespace for XML schemata, see http://schemas.ogf.org/,
>>   and GFD.84 on http://www.ogf.org/docs/?cp

Ah, I think I see now where this is coming from! :-)  That comment was
for the ATOM rendering, which explicitly used XML -- thus the xml
schema (see http://forge.ogf.org/sf/wiki/do/viewPage/projects.occi-wg/wiki/APIDesign
for details on the ATOM rendering approach).  That rendering is
obsolete by now I think -- a to-be-defined new ATOM rendering of OCCI,
or other XML based renderings, may well introduce XML schemas again,
but AFAIU that is different from the way the schema URLs are used in
OCCI right now.

Cheers, Andre.

> cheers
> gary
>
>
>
> On 4/5/2011 11:46 PM, Andre Merzky wrote:
>
> Hi Gary,
>
> On Wed, Apr 6, 2011 at 7:16 AM, Gary Mazz <garymazzaferro at gmail.com> wrote:
>
> Hi All,
>
> Maybe I wasn't clear with the question. I thought we generated a scheme
> and published it on http://schemas.ogf.org . It been almost a year ago,
> so I may be wrong... or dropped another brain cell along the way :)
>
> >From what I understand from the OCCI specs, the schema locations are
> indeed supposed to provide a unique and well defined namespace for
> OCCI, and OCCI extensions.  But I don't see any place in the specs
> where that URL is actually evaluated, and returns a schema of any
> kind.
>
> Having said that, I think it might be a good idea to use that schema
> scheme (ha!) to implement some form of namespace verification.  For
> example, I placed an empty document at
> http://schemas.ogf.org/occi/infrastructure, so that all GET operations
> on that document return an HTTP 200 (OK).  That provides a very simple
> way to confirm the validity of OCCI identifiers, and also provides a
> straight-forward way to register OCCI extensions (or rather, their
> namespaces).  One could also link the normative documents for the
> extension at http://schemas.ogf.org/occi/infrastructure#specification;
> one could verify the #target elements; etc.  However, that is as of
> yet unspecified AFAICS, and is likely a rather naive proposal, given
> my somewhat limited knowledge of HTTP itself.
>
> Best, Andre.
>
>
> cheers,
> gary
>
>
>
> On 4/5/2011 10:34 PM, Alan Sill wrote:
>
> (Same question in the core document , with regards to the
> http://schemas.ogf.org/occi/ base URL reserved for OCCI and the
> http://schemas.ogf.org/occi/core#entity Kind instances.)
>
> Sorry for the ignorant question.
>
> Alan
>
> On Apr 6, 2011, at 12:26 AM, Sill, Alan wrote:
>
> More specifically - in Table 1 we define the following Kind instances.  Are
> these tken to be a namespace, so that no definite schema has to be
> associated with them, or is there intended to be a document returned at the
> following URIs (i.e., are they actual schemata URLs)?
>
>
> Table 1.     The Kind instances defined for the infrastructure sub-types of
> Resource, Link and related Mixins. The base URL http://schemas.ogf.org/occi
> has been replaced with<schema>  in this table for a better readability
> experience.
>
> Term
> compute storage storagelink network ipnetworking networkinterface
> ipnetworkinterface
>
> Scheme
> <schema>/infrastructure#<schema>/infrastructure#<schema>/infrastructure#<schema>/infrastructure#<schema>/infrastructure/network#<schema>/infrastructure#<schema>/infrastucture/networkinterface#
>
> Title
> Compute Resource Storage Resource StorageLink Link Network Resource IP
> Networking Mixin NetworkInterface Link IP NetworkInterface Mixin
> Related Kind
>
> <schema>/core#resource<schema>/core#resource<schema>/core#link<schema>/core#resource
> –
> <schema>/core#link –
>
> Thanks,
> Alan
>
> On Apr 5, 2011, at 2:03 PM, Sill, Alan wrote:
>
> See Section 3.2 and e.g. Table 3 of the current Infrastructure document.
>
> Alan
>
>
>
> On Apr 5, 2011, at 12:21 PM,
> "alexander.papaspyrou at tu-dortmund.de"<alexander.papaspyrou at tu-dortmund.de>
>  wrote:
>
> Hm, not sure what schema you mean...
>
> What would you expect to see there?
>
> -Alexander
>
> Am 05.04.2011 um 01:36 schrieb Gary Mazz:
>
> Hi Alan,
>
> Where can Joel get the definitive current schema or schemata belonging to
> OCCI ?
>
> That's my question.. :)
>
> -gary
>
>
>
> On 4/4/2011 4:45 PM, Sill, Alan wrote:
>
> Usually these are created when the document s published. We ran into this on
> another recent document now in public comment also, and decided to put it in
> on a tentative basis in that case to facilitate testing. We can do that this
> time also, since things are so close to publication.
>
> Where can Joel get the definitive current schema or schemata belonging to
> OCCI, and how likely is it / are they to change before final publication?
>
> Alan
>
>
>
> On Apr 4, 2011, at 5:24 PM, "Gary Mazz"<garymazzaferro at gmail.com>   wrote:
>
> Hi
>
> There is no scheme @ http://schemas.ogf.org/occi/
>
> cheers,
> gary
>
>
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-- 
So much time, so little to do...
[Garfield]