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

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

import android.content.Context;
import fr.gotorennes.domain.Equipement;
import fr.gotorennes.domain.EquipementStatus;

public class EquipementStatusService extends RemoteService<EquipementStatus> {

	private static EquipementStatusService instance;

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

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

	private long lastUpdate = 0;
	private Map<String, Boolean> cache = null;

	public Map<String, Boolean> getEquipementStatus() {
		if (cache == null || System.currentTimeMillis() - lastUpdate > 300000) {
			List<EquipementStatus> result = loadList();
			if (result != null && !result.isEmpty()) {
				cache = new HashMap<String, Boolean>();
				for(EquipementStatus status : result) {
					cache.put(status.id, status.status);					
				}
				lastUpdate = System.currentTimeMillis();
			}
		}
		return cache;
	}

	public boolean getEquipementStatus(Equipement equipement) {
		Map<String, Boolean> status = getEquipementStatus();
		if (status == null) {
			return true;
		}
		return status.get(equipement.id);
	}

	@Override
	protected EquipementStatus populate(JSONObject jsonObject) throws JSONException {
		EquipementStatus equipementStatus = new EquipementStatus();
		equipementStatus.id = jsonObject.getString("idequipement");
		equipementStatus.status = "En fonctionnement".equals(jsonObject.getString("etat"));
		return equipementStatus;
	}

	@Override
	protected String getDataSet() {
		return "tco-metro-equipements-etat-tr";
	}

}