This heavily depends on what you want. SPARQL resultset is basically a set of rows similar to SQL resultset.
If you want to have the FirstContactTime of whatever is bound to ?x as well, you have to append another triple pattern ?x <URI_OF_FirstContactTime_PROPERTY> ?val . And then each item (aka row) in the returned resultset contains the value of ?x and the value of ?val - if exist in the knowledge base. Note, that if there are multiple values for FirstContactTime, you'll get multiple rows with the same value for ?x but different ones for each value of >> The result of a SPARQL query contains only what you selected in the >> SPARQL query. Nothing more, nothing less. > So how should I change the query to get a property value? > > Thanks > > Dmitri Pisarenko > > > 08.02.2017, 10:21, "Lorenz B." <[email protected]>: >> The result of a SPARQL query contains only what you selected in the >> SPARQL query. Nothing more, nothing less. And you select only "things >> that have an email address". >> >>> Hello! >>> >>> I have the following code, in which I find a resource by its e-mail. >>> >>> val varn = "x" >>> val query = createQuery("""SELECT ?${varn} >>> WHERE { ?x >>> <http://www.w3.org/2001/vcard-rdf/3.0#EMAIL> "${email}" }""") >>> val qexec = createQueryExecution(ds, query) >>> val rs = qexec.execSelect() >>> if (rs.hasNext()) { >>> val solution = rs.nextSolution() >>> val rec = solution[varn] >>> // Here I need to find the value of the property >>> FirstContactTime >>> } >>> >>> Now I want to find out whether `rec` has a property `FirstContactTime` and >>> if yes, its value. >>> >>> I tried >>> `rec.model.listObjectsOfProperty(ds.defaultModel.createProperty(FirstContactTime))` >>> but it doesn't return anything. The debugger says `rec` does have a >>> property `FirstContactTime`. >>> >>> How can I get the value of `FirstContactTime` (`2017-03-03T10:35:00Z`) in >>> my code? >>> >>> Thanks in advance >>> >>> Dmitri Pisarenko >> -- >> Lorenz Bühmann >> AKSW group, University of Leipzig >> Group: http://aksw.org - semantic web research center -- Lorenz Bühmann AKSW group, University of Leipzig Group: http://aksw.org - semantic web research center
