@Override
public QueryResultList<Representation> find(FieldQuery parsedQuery) throws IOException {
long start = System.currentTimeMillis();
final SparqlFieldQuery query = SparqlFieldQueryFactory.getSparqlFieldQuery(parsedQuery);
query.setEndpointType(EndpointTypeEnum.LARQ);
String sparqlQuery = query.toSparqlConstruct();
long initEnd = System.currentTimeMillis();
log.info(" > InitTime: " + (initEnd - start));
log.info(" > SPARQL query:\n" + sparqlQuery);
InputStream in =
SparqlEndpointUtils.sendSparqlRequest(
getQueryUri(), sparqlQuery, SparqlSearcher.DEFAULT_RDF_CONTENT_TYPE);
long queryEnd = System.currentTimeMillis();
log.info(" > QueryTime: " + (queryEnd - initEnd));
if (in != null) {
MGraph graph;
TripleCollection rdfData = parser.parse(in, SparqlSearcher.DEFAULT_RDF_CONTENT_TYPE);
if (rdfData instanceof MGraph) {
graph = (MGraph) rdfData;
} else {
graph = new SimpleMGraph(rdfData);
}
long parseEnd = System.currentTimeMillis();
log.info(" > ParseTime: " + (parseEnd - queryEnd));
return new RdfQueryResultList(query, graph);
} else {
return null;
}
}
@Override
public QueryResultList<String> findEntities(FieldQuery parsedQuery) throws IOException {
final SparqlFieldQuery query = SparqlFieldQueryFactory.getSparqlFieldQuery(parsedQuery);
query.setEndpointType(EndpointTypeEnum.LARQ);
String sparqlQuery = query.toSparqlSelect(false);
InputStream in =
SparqlEndpointUtils.sendSparqlRequest(
getQueryUri(), sparqlQuery, SparqlSearcher.DEFAULT_SPARQL_RESULT_CONTENT_TYPE);
// Move to util class!
final List<String> entities =
SparqlSearcher.extractEntitiesFromJsonResult(in, query.getRootVariableName());
return new QueryResultListImpl<String>(query, entities.iterator(), String.class);
}
