ObjectRegistration.java

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

import java.io.IOException;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import kr.ac.kaist.resl.lilliput.util.JSONHelper;
import kr.ac.kaist.resl.lilliput.util.MongoHelper;

import org.json.JSONObject;

import com.restfb.DefaultFacebookClient;
import com.restfb.FacebookClient;
import com.restfb.types.Page;
import com.restfb.types.User;

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.OWLNamedClass;
import edu.stanford.smi.protegex.owl.model.OWLObjectProperty;
import edu.stanford.smi.protegex.owl.model.RDFIndividual;

/**
 * Servlet implementation class ObjectRegistration
 */
public class ObjectRegistration extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public ObjectRegistration() {
        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
		
		//It's done
		String accessToken = (String)request.getParameter("accessToken");
		String password = (String)request.getParameter("password");
		String pageURL = (String)request.getParameter("pageURL");
		ObjectEnroll(accessToken, password, pageURL);
		RequestDispatcher dispatcher = request.getRequestDispatcher("registration.jsp");
		dispatcher.forward(request, response);
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
	}

	
	public void ObjectEnroll(String accessToken, String password, String pageURL)
	{
		
		//making facebookClient
		FacebookClient facebookClient = new DefaultFacebookClient(accessToken);
		
		//getting object page
		Page objectPage = facebookClient.fetchObject(pageURL, Page.class);
		if( objectPage == null )
		{
			return;
		}
					
		//getting object EPC
		String objectEPC = objectPage.getProducts();
		
		//Ontology�� �ҷ���
		RemoteProjectManager rpm = RemoteProjectManager.getInstance();
		Project p = rpm.getProject("localhost:5100", "Lilliput", "1234", "IoTSocialGraph", true);
		OWLModel owlModel = (OWLModel)p.getKnowledgeBase();
		
		//identify whethere object is in or not
		RDFIndividual objectInd = owlModel.getRDFIndividual(objectEPC);
		OWLNamedClass objectClass = owlModel.getOWLNamedClass("Object");
		
		if( objectInd != null )
		{
			return;
		}
		else
		{
			objectInd = objectClass.createRDFIndividual(objectEPC);
		}
				
		//fetch user
		User user = facebookClient.fetchObject("me", User.class);
		String ownerFID = user.getId();
		
		//getting ownerEPC from DB
		
		//identify owner is registrated or not
		//getting ownerEPC from DB
		MongoHelper mHelper = new MongoHelper();
		String ownerEPC = mHelper.isHumanSavedInDB(ownerFID);
		
		RDFIndividual ownerInd = owlModel.getRDFIndividual(ownerEPC);
		
		if( ownerInd == null )
		{
			return;
		}
		
		//giving hasOwnership relationship between owner and object
		
		OWLObjectProperty hasOwnership = owlModel.getOWLObjectProperty("hasOwnership");
		ownerInd.addPropertyValue(hasOwnership, objectInd);
		
		//saving object information to the database
		JSONHelper jhelper = new JSONHelper();
		JSONObject jsonObject = jhelper.getJSONFromObject(objectPage);			
		String objectInformID = mHelper.saveToDB("ObjectInformation", jsonObject, "epc", objectPage.getProducts());
		
		//save to Ontology : Information
		OWLNamedClass informClass = owlModel.getOWLNamedClass("ObjectInformation");
		RDFIndividual informInd = informClass.createRDFIndividual(objectInformID);
		//making relationship : Human - Information
		OWLObjectProperty hasInform = owlModel.getOWLObjectProperty("hasObjectInformation");
		objectInd.addPropertyValue(hasInform, informInd);
		
		p.dispose();
		System.out.println("Object Registration is finished");
		
	}
}