Android Open Source - Go2-Rennes Bike Station Service

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Back to project page Go2-Rennes.

License

The source code is released under:

GNU General Public License

Java Source Code

/*******************************************************************************
 * Copyright (c) 2011 Michel DAVID mimah35-at-gmail.com
 * //  ww w.j  a v  a  2  s.c om
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 ******************************************************************************/
package fr.gotorennes.remote;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.json.JSONException;
import org.json.JSONObject;

import android.content.Context;
import android.util.Log;
import fr.gotorennes.domain.BikeStation;

public class BikeStationService extends RemoteService<BikeStation> {

  public static final String COMMAND = "getbikestations";
  public static final String NODE = "station";

  private static BikeStationService instance;

  private BikeStationService(Context context) {
    super();
  }
  
  protected String getVersion() {
    return "2.0";
  }

  public static synchronized BikeStationService getInstance(Context context) {
    if (instance == null) {
      instance = new BikeStationService(context);
    }
    return instance;
  }

  private long lastUpdate = 0;
  private List<BikeStation> cache = null;

  public List<BikeStation> getBikeStations() {
    if (cache == null || System.currentTimeMillis() - lastUpdate > 60000) {
      cache = loadList(COMMAND, NODE);
      if (cache != null && !cache.isEmpty()) {
        lastUpdate = System.currentTimeMillis();
      }
    }
    return cache != null ? new ArrayList<BikeStation>(cache) : cache;
  }

  public List<BikeStation> getBikeStations(double latitudeMin, double latitudeMax, double longitudeMax, double longitudeMin) {
    List<BikeStation> stations = getBikeStations();
    if (stations == null) {
      return null;
    }

    List<BikeStation> result = new ArrayList<BikeStation>();
    for (BikeStation bikeStation : stations) {
      if (bikeStation.latitude >= latitudeMin && bikeStation.latitude <= latitudeMax && bikeStation.longitude >= longitudeMin && bikeStation.longitude <= longitudeMax) {
        result.add(bikeStation);
      }
    }
    return result;
  }

  public List<BikeStation> getProximityBikeStations(double latitude, double longitude) {
    Map<String, String> parameters = new HashMap<String, String>();
    parameters.put("station", "proximity");
    parameters.put("mode", "coord");
    parameters.put("lat", String.valueOf(latitude));
    parameters.put("long", String.valueOf(longitude));
    return loadList(COMMAND, NODE, parameters);
  }

  public BikeStation getBikeStation(String id) {
    Map<String, String> parameters = new HashMap<String, String>();
    parameters.put("station", "number");
    parameters.put("value", id);
    return loadObject(COMMAND, NODE, parameters);
  }

  @Override
  protected BikeStation populate(JSONObject jsonObject) throws JSONException {
    BikeStation bikeStation = new BikeStation();
    bikeStation.id = jsonObject.getString("number");
    bikeStation.name = jsonObject.getString("name");
    bikeStation.address = jsonObject.getString("address");
    bikeStation.district = jsonObject.getString("district");
    bikeStation.state = Integer.parseInt(jsonObject.getString("state"));
    bikeStation.bikesAvailable = Integer.parseInt(jsonObject.getString("bikesavailable"));
    bikeStation.slotsAvailable = Integer.parseInt(jsonObject.getString("slotsavailable"));
    bikeStation.latitude = Double.parseDouble(jsonObject.getString("latitude"));
    bikeStation.longitude = Double.parseDouble(jsonObject.getString("longitude"));
    bikeStation.carteCredit = Integer.parseInt(jsonObject.getString("pos")) == 1;
    return bikeStation;
  }

}

Java Source Code List

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