package finalpackage; import java.io.File; import java.io.IOException; import java.io.PrintWriter; import java.util.ArrayList; import java.util.List; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import com.hp.hpl.jena.query.QueryExecution; 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.ResultSetFormatter; import com.hp.hpl.jena.rdf.model.Model; import com.hp.hpl.jena.rdf.model.ModelFactory; import com.hp.hpl.jena.util.FileManager; /** * Servlet implementation class tablet */ @WebServlet("/tablet") public class tablet extends HttpServlet { private static final long serialVersionUID = 1L; public static final String MY_FOAF_FILE = "//home/ubuntu/indoor.rdf"; /** * @see HttpServlet#HttpServlet() */ public tablet() { super(); // TODO Auto-generated constructor stub } /** * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response) */ protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // TODO Auto-generated method stub doPost(request, response); } /** * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response) */ protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // TODO Auto-generated method stub Model model = ModelFactory.createDefaultModel(); FileManager.get().readModel(model,MY_FOAF_FILE); model.read(new File(MY_FOAF_FILE).toURI().toString()); String queryString = "SELECT ?predicate ?object WHERE {?subject ?predicate ?object .}"; com.hp.hpl.jena.query.Query query = QueryFactory.create(queryString); QueryExecution qe = QueryExecutionFactory.create(query, model); com.hp.hpl.jena.query.ResultSet results = qe.execSelect(); ResultSetFormatter.out(System.out, results); PrintWriter out = response.getWriter(); out.println("<html><body>"); while ( results.hasNext()) { QuerySolution binding = results.nextSolution(); out.println("<p>"+binding.get("object").toString() +"</p>"); } out.println("</body>") ; out.println("</html>") ; out.close() ; } }
var
This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)