/**
* Copyright (C) 2013 - 2015 the enviroCar community
*
* This file is part of the enviroCar app.
*
* The enviroCar app 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, or
* (at your option) any later version.
*
* The enviroCar app 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 the enviroCar app. If not, see http://www.gnu.org/licenses/.
*/
package org.envirocar.remote.dao;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.reflect.TypeToken;
import org.envirocar.core.dao.AbstractCacheDAO;
import org.envirocar.core.dao.FuelingDAO;
import org.envirocar.core.entity.Announcement;
import org.envirocar.core.entity.Fueling;
import org.envirocar.core.exception.DataRetrievalFailureException;
import org.envirocar.core.exception.NotConnectedException;
import org.envirocar.core.exception.UnauthorizedException;
import org.envirocar.remote.serializer.FuelingSerializer;
import java.io.IOException;
import java.util.List;
import javax.inject.Inject;
import rx.Observable;
import rx.Subscriber;
/**
* TODO JavaDoc
*
* @author dewall
*/
public class CacheFuelingDAO extends AbstractCacheDAO implements FuelingDAO {
private static final String FUELING_CACHE = "fuelings";
private static final Gson GSON = new GsonBuilder()
.registerTypeAdapter(Fueling.class, new FuelingSerializer()).create();
@Inject
public CacheFuelingDAO(){}
@Override
public List<Fueling> getFuelings() throws DataRetrievalFailureException {
try {
return GSON.fromJson(readCache(FUELING_CACHE),
new TypeToken<List<Announcement>>() {
}.getType());
} catch (IOException e) {
throw new DataRetrievalFailureException(e);
}
}
@Override
public Observable<List<Fueling>> getFuelingsObservable() {
return Observable.create(new Observable.OnSubscribe<List<Fueling>>() {
@Override
public void call(Subscriber<? super List<Fueling>> subscriber) {
try {
subscriber.onNext(getFuelings());
} catch (DataRetrievalFailureException e) {
subscriber.onError(e);
}
subscriber.onCompleted();
}
});
}
@Override
public void createFueling(Fueling fueling) throws NotConnectedException {
throw new NotConnectedException("CacheFuelingDAO does not support saving.");
}
@Override
public Observable<Void> createFuelingObservable(Fueling fueling) {
return Observable.error(new NotConnectedException(
"CacheFuelingDAO does not support saving."));
}
@Override
public void deleteFueling(Fueling fueling) throws NotConnectedException, UnauthorizedException {
throw new NotConnectedException("CacheFuelingDAO does not support saving.");
}
@Override
public Observable<Void> deleteFuelingObservable(Fueling fueling) {
return Observable.error(new NotConnectedException(
"CacheFuelingDAO does not support saving."));
}
}