Hi Robin,
negated property paths are currently not supported by the SPIN RDF
syntax. I did not even know they existed, having relied on
https://www.w3.org/TR/sparql11-property-paths/
when designing and updating the SPIN RDF syntax. At some stage, the !
operator was added to SPARQL 1.1 and SPIN was not updated accordingly.
https://www.w3.org/TR/sparql11-query/#propertypaths
The work-around is to use the syntax based on sp:text instead of the
SPIN RDF syntax.
Thanks
Holger
On 30/04/2016 0:07, Robin Keskisärkkä wrote:
Hi!
I need to store negated property paths using the SPIN API (), however,
although ARQ parses the queries just fine I'm unable to use them to
create SPIN queries. I'm using the latest version of the SPIN API
(2.0.0). To exemplify:
|
# Using negated paths to mimic wildcard
StringqString ="PREFIX : <http://example#> SELECT ?target WHERE {
:start (:|!:)* ?target }";
Queryquery =QueryFactory.create(qString);
ARQ2SPIN arq2SPIN =newARQ2SPIN(model);
org.topbraid.spin.model.QueryspinQuery =arq2SPIN.createQuery(query,null);
|
This gives rise to the exeption:
|
Exceptioninthread
"main"java.lang.IllegalArgumentException:UnsupportedPathelement:!<http://example#>
of type class org.apache.jena.sparql.path.P_NegPropSet
at org.topbraid.spin.arq.ARQ2SPIN.createPath(ARQ2SPIN.java:798)
at org.topbraid.spin.arq.ARQ2SPIN.createPath(ARQ2SPIN.java:769)
at org.topbraid.spin.arq.ARQ2SPIN.createMod(ARQ2SPIN.java:804)
at org.topbraid.spin.arq.ARQ2SPIN.createPath(ARQ2SPIN.java:741)
at org.topbraid.spin.arq.ARQ2SPIN.access$200(ARQ2SPIN.java:130)
at org.topbraid.spin.arq.ARQ2SPIN$1.visitElements(ARQ2SPIN.java:609)
at org.topbraid.spin.arq.ARQ2SPIN$1.visit(ARQ2SPIN.java:552)
at
org.apache.jena.sparql.syntax.ElementPathBlock.visit(ElementPathBlock.java:89)
at
org.topbraid.spin.arq.AbstractElementVisitor.visit(AbstractElementVisitor.java:82)
at org.topbraid.spin.arq.ARQ2SPIN$1.visit(ARQ2SPIN.java:498)
at
org.apache.jena.sparql.syntax.ElementGroup.visit(ElementGroup.java:120)
at org.topbraid.spin.arq.ARQ2SPIN.createElementList(ARQ2SPIN.java:454)
at org.topbraid.spin.arq.ARQ2SPIN.createQuery(ARQ2SPIN.java:905)
|
Are negated property paths not supported in SPIN API at this point? I
also looked at the vocabulary specification and couldn't find anything
that indicated that it is supported.
Cheers,
Robin
--
You received this message because you are subscribed to the Google
Group "TopBraid Suite Users", the topics of which include Enterprise
Vocabulary Network (EVN), Reference Data Manager (RDM), TopBraid
Composer, TopBraid Live, TopBraid Insight, SPARQLMotion, SPARQL Web
Pages and SPIN.
To post to this group, send email to [email protected]
---
You received this message because you are subscribed to the Google
Groups "TopBraid Suite Users" group.
To unsubscribe from this group and stop receiving emails from it, send
an email to [email protected]
<mailto:[email protected]>.
For more options, visit https://groups.google.com/d/optout.
--
You received this message because you are subscribed to the Google Group "TopBraid
Suite Users", the topics of which include Enterprise Vocabulary Network (EVN),
Reference Data Manager (RDM), TopBraid Composer, TopBraid Live, TopBraid Insight,
SPARQLMotion, SPARQL Web Pages and SPIN.
To post to this group, send email to [email protected]
---
You received this message because you are subscribed to the Google Groups "TopBraid Suite Users" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
For more options, visit https://groups.google.com/d/optout.
