You have to use ?snew variable instead of ?olds in the CONSTRUCT
template, otherwise it will have no effect:
CONSTRUCT {
?snew a owl:NamedIndividual, skos:Concept ;
?p ?o .
}
On Thu, Nov 3, 2016 at 5:28 PM, Mahmood Ahmad
<[email protected]> wrote:
> 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]>
>>
>>
