MetroStationOrderService.java

/*******************************************************************************
 * Copyright (c) 2011 Michel DAVID mimah35-at-gmail.com
 * 
 * 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 android.content.Context;

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

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

import fr.gotorennes.domain.MetroStation;

public class MetroStationOrderService extends RemoteService<MetroStation> {

	private static MetroStationOrderService instance;

	private MetroStationOrderService(Context context) {
		super();
	}

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

	private Map<String,Integer> cache = null;

	public Integer getMetroStationOrder(String name) {
		if (cache == null || cache.isEmpty()) {
			cache = new HashMap<String, Integer>();
			List<MetroStation> stations = loadList("refine.libellecourtparcours=JFK");
			for (MetroStation station : stations) {
				cache.put(station.name, station.sequence);
			}
		}
		Integer order = cache.get(name);
		return order != null ? order : 0;
	}

	@Override
	protected MetroStation populate(JSONObject jsonObject) throws JSONException {
		MetroStation station = new MetroStation();
		station.name = jsonObject.getString("nomarret");
		station.sequence = jsonObject.getInt("ordre");
		return station;
	}

	@Override
	protected String getDataSet() {
		return "tco-metro-topologie-dessertes-td";
	}

}