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A Java library for transforming Google Transit Feed Spec feeds

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/**
 * Copyright (C) 2013 Guillaume Campagna 
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.onebusaway.gtfs_transformer.updates;

import java.util.List;

import org.onebusaway.gtfs.model.StopTime;
import org.onebusaway.gtfs.model.Trip;
import org.onebusaway.gtfs.services.GtfsMutableRelationalDao;
import org.onebusaway.gtfs_transformer.services.GtfsTransformStrategy;
import org.onebusaway.gtfs_transformer.services.TransformContext;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class RemoveRepeatedStopTimesInSameTripStrategy implements GtfsTransformStrategy {

	private static Logger _log = LoggerFactory.getLogger(RemoveRepeatedStopTimesInSameTripStrategy.class);

	@Override
	public String getName() {
		return this.getClass().getSimpleName();
	}

	@Override
	public void run(TransformContext context, GtfsMutableRelationalDao dao) {

		int removed = 0;
		int total = 0;

		for (Trip trip : dao.getAllTrips()) {
			StopTime prev = null;
			List stopTimes = dao.getStopTimesForTrip(trip);

			for (StopTime stopTime : stopTimes) {
				total++;
				if (prev != null) {
					if (prev.getStop().getId().equals(stopTime.getStop().getId())) {
						stopTime.setArrivalTime(Math.min(prev.getArrivalTime(),
								stopTime.getArrivalTime()));
						stopTime.setDepartureTime(Math.max(prev.getDepartureTime(),
								stopTime.getDepartureTime()));
						dao.removeEntity(prev);
						removed++;
					}
				}
				prev = stopTime;
			}
		}

		_log.info("removed=" + removed + " total=" + total);

		UpdateLibrary.clearDaoCache(dao);
	}
}