[tei-council] Two quick questions about Schematron constraints

[Martin Holmes]

> ...constraints on attributes? There appears to
>> be only one (on @targetLang in att.pointing)

Apologies, there are two; the other is @prefix on moduleRef.

On 12-06-15 11:46 AM, Martin Holmes wrote:
> I'm rather belatedly getting around to implementing a couple of
> schematron constraints I was tasked with at Ann Arbor, and thinking
> about the explanatory bit on constraints that I'll be writing for "How
> to edit the Guidelines".
>
> Looking at the existing constraints, I have a couple of questions:
>
> In this constraint (from delSpan):
>
>     <constraintSpec ident="spanTo" scheme="isoschematron">
>       <constraint>
>         <assert xmlns="http://purl.oclc.org/dsdl/schematron"
> test="@spanTo">The spanTo= attribute of<name/>  is required.</assert>
>       </constraint>
>     </constraintSpec>
>
> does<name/>  automatically get replaced by ancestor::elementSpec/@ident?
> What happens in the case of constraints on attributes? There appears to
> be only one (on @targetLang in att.pointing), but if<name/>  were used
> there, would it be replaced with @targetLang, or with the ancestor's
> @ident (att.pointing)?
>
> Secondly, these constraints appear on the root TEI element:
>
>     <constraintSpec ident="c1" scheme="isoschematron">
>       <constraint>
>         <ns xmlns="http://purl.oclc.org/dsdl/schematron" prefix="tei"
> uri="http://www.tei-c.org/ns/1.0"/>
>       </constraint>
>     </constraintSpec>
>     <constraintSpec ident="c2" scheme="isoschematron">
>       <constraint>
>         <ns xmlns="http://purl.oclc.org/dsdl/schematron" prefix="rng"
> uri="http://relaxng.org/ns/structure/1.0"/>
>       </constraint>
>     </constraintSpec>
>
> What are they actually doing, if anything?
>
> Cheers,
> Martin

-- 
Martin Holmes
University of Victoria Humanities Computing and Media Centre
(mholmes at uvic.ca)