[Versa] Issue 100A proposal, extension functions

[Michael Olson]

>> All function names are Qnames as given by 'Namespaces in XML.'
>> Qnames are all expanded the same way by the implementation.
>> References to unbound namespace prefixes should always raise the same
>> error (for variables, node queries, and function names) indicating to
>> the user that the prefix used is unbound.
>>
>> The following namespaces prefix to URI bindings should be registered  
>> by default:
>>
>> rdfs    http://www.w3.org/2000/01/rdf-schema#
>> rdf     http://www.w3.org/1999/02/22-rdf-syntax-ns#
>> dc      http://purl.org/dc/elements/1.1/
>> xs      http://www.w3.org/2001/XMLSchema#
>> owl    http://www.w3.org/2002/07/owl#
>> vtrav  http://rdfinference.org/versa/0/2/traverse/
>> versa http://rdfinference.org/versa/0/2/
>
> I think we should eliminate vtrav and all other derived Versa
> namespaces, and just use the main Versa namespace.
>

Agreed.  May be

http://versardf.org/ns/2/0/constants

as on place for all of them?

> Also, are we committed to the namespace as the primary vehicle for  
> Versa
> versioning?  This can be a sticky choice, but then again, all of them
> can be.
>

I'm OK with this.

> And remember that we now have rdfversa.org, and see my earlier  
> namespace
> suggestion.
>
>
> --  
> Uche Ogbuji                               Fourthought, Inc.
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> XML Output with 4Suite & Amara -  
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> Schema standardization for top-down semantic transparency -  
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>
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------------------------------------------------------------------------ 
-----------------
Mike Olson                                                Principal  
Consultant
mike.olson at fourthought.com                +1 720 253 4662
Fourthought, Inc.                                       
http://Fourthought.com
PO Box 270590,                                       http://4Suite.org
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