Spring Jena Example

TestSpringJena.java

package com.example;

import org.springframework.data.rdf.sparql.*;
import org.springframework.data.rdf.jena.*;
import org.junit.Before;
import org.junit.Test;

public class TestSpringJena { 

	private Model model;
	private JenaTemplate jena;
        private SparqlTemplate sparql;

        @Before
        public void init() {
                model = ModelFactory.createDefaultModel();
                jena = new JenaTemplate();
                sparql = new SparqlTemplate();
                jena.setModel(model);
                sparql.setModel(model);
        }

        @Test
        public void testModel() {

                jena.add("urn:test", "urn:someProperty", "hello world");

                // Select by list
                String query1 = "SELECT ?x ?y ?z WHERE { ?x ?y ?z }";
	        List<String> list = sparql.execSelectList(query1, new SolutionMapper<String>() {
		         public String mapSelect(ResultSet rs, int rowNum) {
				QuerySolution sln = rs.nextSolution();
				RDFNode x = sln.get("x");
				RDFNode y = sln.get("y");
				RDFNode z = sln.get("z");
				return x.toString() + "|" + y.toString() + "|" + z.toString();
		} });

                // result set as a map of strings
                Map<String, String> map = sparql.execSelectStringMap(query1);

                // Need one parameter? select a string
                String query2 = "SELECT ?z WHERE { <urn:test> ?y ?z }";
		String result  = sparql.execSelectString(query2);
        }

}