IspDAO.java :  » UnTagged » peno3-2010-cwb2 » cw » kuleuven » be » peno1011 » cwb2 » database » Android Open Source

package cw.kuleuven.be.peno1011.cwb2.database;


import java.io.IOException;
import java.util.ArrayList;

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpException;
import org.apache.commons.httpclient.methods.PostMethod;

import com.google.android.maps.GeoPoint;
import com.google.gson.Gson;

import cw.kuleuven.be.peno1011.cwb2.model.ISP;

public class IspDAO {
  
  private static IspDAO ispDAO;
  private Cryptography cryptography = Cryptography.getInstance();
  
  // Singleton has a private constructor
  private IspDAO(){
    
  }
  
  public static IspDAO getInstance() {
    if (ispDAO == null){
      ispDAO = new IspDAO();
    }
    return ispDAO;
  }
  
  public ISP getIsp(String userId) throws HttpException, IOException{
    ISP isp;    
    
    HttpClient client = new HttpClient();
    PostMethod method = new PostMethod("http://ariadne.cs.kuleuven.be/peno-cwb2/IspHandler/getIspByUserId");
    method.addParameter("userId", userId);
    
    int response = client.executeMethod(method);
    String encryptedJson = method.getResponseBodyAsString();
    String json = cryptography.decrypt(encryptedJson);
    
    if(json.contains("[]")) {
      isp = null;
    }
    else {
      ISP[] ispList = new Gson().fromJson(json.toString(), ISP[].class);
      isp = ispList[0];
    }
    return isp;
  }
}