Re: [Stox] Review on -presence

[Saúl Ibarra Corretgé <[e-mail]>]

On Aug 3, 2013, at 9:53 AM, Peter Saint-Andre wrote:

> On 8/1/13 12:32 AM, Peter Saint-Andre wrote:
>> On 7/30/13 5:33 PM, Saúl Ibarra Corretgé wrote:
>>> 
>>> - Using ID-123kdklejd doesn't seem to work as a valid xs:ID, TID-1234
>>> does work though, so we could use TID- as the prefix for tuple
>>> identifiers in examples and such.
>> 
>> I will double-check that against the XML specification.
> 
> Hmm. Here is what I see in the XML schema datatype specification:
> 
>   The ·value space· of ID is the set of all strings that ·match· the
>   NCName production in [Namespaces in XML].
> 
> Where the NCName production is defined as follows:
> 
>   NCName 	::= 	(Letter | '_') (NCNameChar)*
> 
> What software are you using for validation? I'm not seeing a constraint
> that an xs:ID needs to begin with three letters.
> 

I tested it with lxml, a Python wrapper for libxml2. I complained because 'ID-123' was too ambiguous for an xs:ID. Not sure if it's an implementation detail / issue though.

--
Saúl Ibarra Corretgé
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