/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.jena.examples;
import com.hp.hpl.jena.query.Query;
import com.hp.hpl.jena.query.QueryExecutionFactory;
import com.hp.hpl.jena.query.QueryFactory;
import com.hp.hpl.jena.query.QuerySolution;
import com.hp.hpl.jena.query.ResultSet;
import com.hp.hpl.jena.rdf.model.Resource;
import com.hp.hpl.jena.sparql.engine.http.QueryEngineHTTP;
import com.hp.hpl.jena.util.FileManager;
public class ExampleARQ_03 {
public static void main(String[] args) {
FileManager.get().addLocatorClassLoader(ExampleARQ_01.class.getClassLoader());
String apikey = System.getenv("KASABI_API_KEY");
String queryString =
"PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>" +
"PREFIX italy: <http://data.kasabi.com/dataset/italy/schema/>" +
"SELECT ?region WHERE { " +
" ?region rdf:type italy:Region" +
"}";
Query query = QueryFactory.create(queryString);
QueryEngineHTTP qexec = (QueryEngineHTTP)QueryExecutionFactory.createServiceRequest("http://api.kasabi.com/dataset/italy/apis/sparql", query);
qexec.addParam("apikey", apikey);
try {
ResultSet results = qexec.execSelect();
while ( results.hasNext() ) {
QuerySolution soln = results.nextSolution();
Resource region = soln.getResource("region");
System.out.println(region.getURI());
}
} finally {
qexec.close();
}
}
}