Tarql federation example

data.csv

mapping.rq

base <http://example.com/id/>
prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>
prefix owl: <http://www.w3.org/2002/07/owl#>
construct {
  ?iri rdfs:label ?name ;
    owl:sameAs ?s .
}
where {
  bind(iri(?id) as ?iri)
  service <https://dbpedia.org/sparql> {
    ?s a <http://dbpedia.org/ontology/ProgrammingLanguage> ;
      rdfs:label ?label .
    filter langMatches(lang(?label), "EN" )
  }
  filter(str(?label) = ?name)
}

result.ttl

@prefix rdfs:  <http://www.w3.org/2000/01/rdf-schema#> .
@prefix owl:  <http://www.w3.org/2002/07/owl#> .
@prefix rdf:  <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .

<http://example.com/id/1>
        rdfs:label  "SPARQL" ;
        owl:sameAs  <http://dbpedia.org/resource/SPARQL> .

<http://example.com/id/2>
        rdfs:label  "SQL" ;
        owl:sameAs  <http://dbpedia.org/resource/SQL> .

<http://example.com/id/3>
        rdfs:label  "XQuery" ;
        owl:sameAs  <http://dbpedia.org/resource/XQuery> .

run.sh

#!/bin/bash

tarql mapping.rq data.csv > result.ttl