Many thanks. I have been trying this but seem to miss some trick: From my CONSTRUCT query:
PREFIX owl: <http://www.w3.org/2002/07/owl#> PREFIX xsd: <http://www.w3.org/2001/XMLSchema#> PREFIX skos: <http://www.w3.org/2004/02/skos/core#> prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> PREFIX www: <http://xyz.com#> CONSTRUCT { ?s a owl:NamedIndividual, skos:Concept ; ?p ?o . } WHERE { ?s a owl:NamedIndividual, skos:Concept ; ?p ?o . } I get results of the following type (summarised because of file size). www:Some_Identifier a skos:Concept , owl:NamedIndividual ; ?p ?o . I need to replace 'Some_Identifier' with a UUID generated by the STRUUID() function. For this purpose I append the bind statement in a new CONSTRUCT query as follow: CONSTRUCT { ?olds a owl:NamedIndividual, skos:Concept ; ?p ?o . } WHERE { ?olds a owl:NamedIndividual, skos:Concept ; ?p ?o . BIND(CONCAT(CONCAT(STRBEFORE(?olds, "#"), "#"), STRUUID()) AS ?snew) . } But this does not change anything. It looks as if I expect the variable ?olds as a string whereas it is not. How can then I use the BIND() function correctly to obtain this? One way may be to use STR(www:) and concatenate it with STRUUID(), but how to place this in the sub-graph? Any idea, I'll appreciate. Regards Mahmood -----Original Message----- From: Martynas Jusevičius [mailto:[email protected]] Sent: 03 November 2016 12:36 To: [email protected] Subject: Re: Adding UUIDs to SPARQL query results Use BIND() with UUID() or STRUUID(). https://www.w3.org/TR/2012/WD-sparql11-query-20120724/#func-uuid https://www.w3.org/TR/2012/WD-sparql11-query-20120724/#func-struuid On Thu, Nov 3, 2016 at 1:34 PM, Mahmood Ahmad <[email protected]> wrote: > Hi, > > [Advanced apologies if this question is out of scope of this list, and > advise me the correct forum.] > > I am currently using Apache Jena Fuseki 2.4.0 (Windows 10) to upload my > project RDF triples into a big soup. > > Using the SPARQL CONSTRUCT queries, I am able to query sub-graphs from the > big soup and the result is in Turtle format. However, I am looking to add a > UUID to every result of my query. > > Is it possible to get this done within my CONSTRUCT query, and how? If not, > please can you suggest some alternative approaches? > > Thanks and regards > Mahmood > > ==================== > Dr Mahmood Ahmad > KTP Associate > > School of Computer Science > University of Manchester > and > Telematicus > Newport Street > Macclesfield > SK11 6QJ > United Kingdom > > E: [email protected]<mailto:[email protected]> > E: > [email protected]<mailto:[email protected]> > >
