ISSUE-35: Language-tags Requirement

Language-tags Req

Language-tags Requirement

State:

CLOSED

Product:

Requirements

Raised by:

Jose Emilio Labra Gayo

Opened on:

2015-04-02

Description:

Requirement 6.4 must be clarified or separated in two requirements.

Requirement 6.4 reads as:

"R6.4: Expressivity: Language Tags

"Some constraints require comparing language tags of RDF literals, e.g. to check that no language is used more than once per property. Also to produce multi-lingual error messages."

When I voted in favour of it, I understood that it was about having a mechanism to handle language tags in SHACL.

In a recent email: https://lists.w3.org/Archives/Public/public-data-shapes-wg/2015Mar/0498.html Richard says that given that this requirements is in the section "Complex constraints" then it should not be part of the Lite/Core.

Although from my point of view, there is no boundary defined yet between Lite/Core, I think having a simple mechanism to constrain a literal based on its language tag is needed.

If it is necessary to add it as a single requirement, I would suggest to have a new requirement which could be:

5.12: Language Tags

SHACL must have a mechanism to constrain the language tags of RDF literals.

6.4. Complex constraints on Language Tags

Some constraints require comparing language tags of RDF literals, e.g. to check that no language is used more than once per property.

I would remove the last phrase: "Also to produce multi-lingual error messages."
because it is about language errors. In fact I had already asked to remove it in the Wiki: https://www.w3.org/2014/data-shapes/wiki/Requirements#Expressivity:_Language_Tags

Related Actions Items:

No related actions

Related emails:

1. Re: ISSUE-137: Re: rdf language tag contraints (from holger@topquadrant.com on 2016-03-19)
2. Re: ISSUE-137: Re: rdf language tag contraints (from kcoyle@kcoyle.net on 2016-03-18)
3. Re: ISSUE-137: Re: rdf language tag contraints (from miika.alonen@csc.fi on 2016-03-18)
4. Re: ISSUE-137: Re: rdf language tag contraints (from bart_van_leeuwen@netage.nl on 2016-03-18)
5. ISSUE-137: Re: rdf language tag contraints (from holger@topquadrant.com on 2016-03-18)
6. Re: rdf language tag contraints (from lehors@us.ibm.com on 2016-03-14)
7. Re: rdf language tag contraints (from bart_van_leeuwen@netage.nl on 2016-03-14)
8. Re: rdf language tag contraints (from kcoyle@kcoyle.net on 2016-03-14)
9. shapes-ISSUE-137 (bartvanleeuwen): Missing constraint for language tag [SHACL - Core] (from sysbot+tracker@w3.org on 2016-03-14)
10. Re: rdf language tag contraints (from bart_van_leeuwen@netage.nl on 2016-03-14)
11. Re: rdf language tag contraints (from kcoyle@kcoyle.net on 2016-03-14)
12. Re: rdf language tag contraints (from bart_van_leeuwen@netage.nl on 2016-03-14)
13. Re: rdf language tag contraints (from kcoyle@kcoyle.net on 2016-03-14)
14. rdf language tag contraints (from bart_van_leeuwen@netage.nl on 2016-03-13)
15. Re: PROPOSAL to close ISSUE-35 per Jose's suggestion (from simon.steyskal@wu.ac.at on 2015-04-18)
16. Re: PROPOSAL to close ISSUE-35 per Jose's suggestion (from arthur.ryman@gmail.com on 2015-04-17)
17. PROPOSAL to close ISSUE-35 per Jose's suggestion (from lehors@us.ibm.com on 2015-04-17)
18. shapes-ISSUE-35 (labra): Language-tags [Requirements] (from sysbot+tracker@w3.org on 2015-04-02)

Related notes:

Display change log