ISSUE-90: Can the focus node be a literal?

Literal focus nodes

Can the focus node be a literal?

State:

CLOSED

Product:

SHACL Spec

Raised by:

Holger Knublauch

Opened on:

2015-09-21

Description:

The spec is vague on that topic, but we need to clarify whether the focus node can also be a literal. My assumption from the SPIN days is that they would only be IRIs and blank nodes, but now I see no real reason for such a restriction. But I have not tried it out yet, so I may be missing some consequences. Does anyone see problems?

A use case would be to allow sh:valueShape to apply to literals too, e.g. to check its own datatype or length, e.g. for qualified constraints.

If we change this, then http://w3c.github.io/data-shapes/shacl/#AllObjectsScope should be generalized.

Related Actions Items:

No related actions

Related emails:

1. Re: RDF Data Shapes WG Agenda for 1 October 2015 (from holger@topquadrant.com on 2015-10-01)
2. Re: RDF Data Shapes WG Agenda for 1 October 2015 (from holger@topquadrant.com on 2015-10-01)
3. Re: RDF Data Shapes WG Agenda for 1 October 2015 (from pfpschneider@gmail.com on 2015-09-30)
4. Re: shapes-ISSUE-90 (Literal focus nodes): Can the focus node be a literal? [SHACL Spec] (from pfpschneider@gmail.com on 2015-09-30)
5. Re: shapes-ISSUE-90 (Literal focus nodes): Can the focus node be a literal? [SHACL Spec] (from holger@topquadrant.com on 2015-09-25)
6. Re: shapes-ISSUE-90 (Literal focus nodes): Can the focus node be a literal? [SHACL Spec] (from pfpschneider@gmail.com on 2015-09-24)
7. shapes-ISSUE-90 (Literal focus nodes): Can the focus node be a literal? [SHACL Spec] (from sysbot+tracker@w3.org on 2015-09-21)

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