sparql_examples/federated_query_construct_new_URI_selected_fields_example.rq at master · librarywebchic/sparql_examples · GitHub

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#federated a query that looks at WorldCat and Wikidata and pulls in the multi-language properties from Wikidata along with particular properties in WorldCat
PREFIX schema: <http://schema.org/>
PREFIX library: <http://purl.org/library/>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX wdt: <http://www.wikidata.org/prop/direct/>

CONSTRUCT
{
?worldcatSubjects ?p ?o.
<http://www.mybibdata.org/oclc/1210> schema:name ?wc_name.
<http://www.mybibdata.org/oclc/1210> schema:description ?wc_description .
<http://www.mybibdata.org/oclc/1210> schema:name ?name.
<http://www.mybibdata.org/oclc/1210> schema:description ?description .
<http://www.mybibdata.org/oclc/1210> schema:sameAs <http://www.worldcat.org/oclc/1210> .
<http://www.mybibdata.org/oclc/1210> schema:sameAs ?work .
}

FROM <http://www.worldcat.org/oclc/1210>
WHERE {
?worldcatSubjects ?p ?o.
<http://www.worldcat.org/oclc/1210> schema:name ?wc_name.
<http://www.worldcat.org/oclc/1210> schema:description ?wc_description.
<http://www.worldcat.org/oclc/1210> library:oclcnum ?oclcNumber.
FILTER regex(STR(?worldcatSubjects), "worldcat.org").

SERVICE <https://query.wikidata.org/sparql> {
    ?work wdt:P243 ?oclcNumber.
    ?work rdfs:label ?name.
    OPTIONAL {
        ?work schema:description ?description .
    }
}
}