- From: Holger Knublauch <holger@topquadrant.com>
- Date: Sat, 22 Apr 2017 09:10:16 +1000
- To: public-rdf-shapes@w3.org
On 21/04/2017 14:51, Nilesh Jain wrote: > Hi, > > I am prototyping a SHACL SPARQL implementation as a student project. In case you are working on the SHACL-SPARQL features, please consider submitting an implementation report, see http://w3c.github.io/data-shapes/data-shapes-test-suite/ (currently only one implementation covers SHACL-SPARQL, but we need two in order to move the process forward). > I have a question: what is supposed to happen if an owl:imports chain > of prefix declarations contains duplicates (ie: defines the same > prefix with two different name spaces)? This is explained in the second grey box in https://www.w3.org/TR/shacl/#sparql-prefixes - such shape graphs are ill-formed. This means that the validation process is undefined. In practice, you could for example report a failure, see https://www.w3.org/TR/shacl/#ill-formed-shape-graphs HTH Holger > > Nilesh
Received on Friday, 21 April 2017 23:10:51 UTC