AllRelationships.java

package kr.ac.kaist.resl.lilliput.rest;

import java.util.List;
import java.util.Map;

import kr.ac.kaist.resl.lilliput.util.Util;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import org.restlet.ext.json.JsonRepresentation;
import org.restlet.resource.Get;
import org.restlet.resource.ServerResource;

import edu.stanford.smi.protege.model.Project;
import edu.stanford.smi.protege.server.RemoteProjectManager;
import edu.stanford.smi.protegex.owl.model.OWLModel;
import edu.stanford.smi.protegex.owl.model.query.QueryResults;

public class AllRelationships  extends ServerResource {

	@SuppressWarnings({ "unchecked", "rawtypes" })
	@Get("json")
	public JsonRepresentation toJson() {
		try {
			JSONArray returnJson = new JSONArray();
			//Save Space to Ontology if it is not saved
			RemoteProjectManager rpm = RemoteProjectManager.getInstance();
			Project p = rpm.getProject("localhost:5100", "Lilliput", "1234", "IoTSocialGraph", true);
			OWLModel owlModel = (OWLModel)p.getKnowledgeBase();
			String query = "PREFIX iot: <http://www.owl-ontologies.com/Ontology1334066780.owl#> SELECT distinct ?s ?p ?o WHERE { ?p rdfs:subPropertyOf iot:IoTSocialRelationship . ?s ?p ?o . }";
			QueryResults queryResults = owlModel.executeSPARQLQuery(query);
			List<String> x = queryResults.getVariables();
			while( queryResults.hasNext())
			{
				Map y = queryResults.next();
				JSONObject resultJson = new JSONObject();
				for(int i = 0 ; i < x.size() ; i++ )
				{
					String vars = x.get(i);
					String results = y.get(vars).toString();			
					//results = Util.individualToBrowserText(results);
					//String[] sp = results.split("\\s");
					resultJson.put(vars, results);
				}
				returnJson.put(resultJson);
			}
			JsonRepresentation representation = new JsonRepresentation(returnJson);
			p.dispose();

			// Returns the XML representation of this document.
			return representation;
		} catch (JSONException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

		return null;
	}
}