[occi-wg] Where is the scheme ?

[Andre Merzky]

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]