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A Java library for transforming Google Transit Feed Spec feeds

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/**
 * Copyright (C) 2017 Tony Laidig
 * 
 * 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;
/**
 * Remove stops that do not allow pickup/drop off ("non-revenue").
 * Specifically exclude terminals (first/last stops).
 * @author laidig
 *
 */
public class RemoveNonRevenueStopsExcludingTerminalsStrategy implements GtfsTransformStrategy {
	private static Logger _log = LoggerFactory.getLogger(RemoveNonRevenueStopsExcludingTerminalsStrategy.class);

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

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

	    int removedStopTimeCount = 0;
	    int totalStopTimeCount = 0;

	      for (Trip trip : dao.getAllTrips()) {
	        List stopTimes = dao.getStopTimesForTrip(trip);
	        int tripLength = stopTimes.size();
	        
	        for (int i =0; i < tripLength; i++) {
	          totalStopTimeCount++;
	          StopTime stopTime = stopTimes.get(i);
	          
	          if (isNonRevenue(stopTime) && !isFirstOrLast(i, tripLength)) {
	        	  dao.removeEntity(stopTime);
	        	  removedStopTimeCount++;
	        }
	      }
	    }

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

	    UpdateLibrary.clearDaoCache(dao);
	  }
	  
	  private boolean isNonRevenue (StopTime s){
		  return (s.getDropOffType() ==1 && s.getPickupType() ==1);
	  }
	  
	  private boolean isFirstOrLast (int i, int size){
		  return (i == 0 || i == size -1);
	  }
}