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/*
* Copyright (c) 2015, Conveyal
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.conveyal.gtfs.model;
import com.conveyal.gtfs.GTFSFeed;
import org.mapdb.Fun;
import java.io.IOException;
import java.util.Locale;
import static com.conveyal.gtfs.model.Entity.Writer.convertToGtfsTime;
public class Frequency extends Entity implements Comparable {
/**
* Frequency entries have no ID in GTFS so we define one based on the fields in the frequency entry.
*
* It is possible to have two identical frequency entries in the GTFS, which under our understanding of the situation
* would mean that two sets of vehicles were randomly running the same trip at the same headway, but uncorrelated
* with each other, which is almost certain to be an error.
*/
public String getId() {
StringBuilder sb = new StringBuilder();
sb.append(trip_id);
sb.append('_');
sb.append(convertToGtfsTime(start_time));
sb.append("_to_");
sb.append(convertToGtfsTime(end_time));
sb.append("_every_");
sb.append(String.format(Locale.getDefault(), "%dm%02ds", headway_secs / 60, headway_secs % 60));
if (exact_times == 1) sb.append("_exact");
return sb.toString();
}
private static final long serialVersionUID = -7182161664471704133L;
public String trip_id;
public int start_time;
public int end_time;
public int headway_secs;
public int exact_times;
/** must have a comparator since they go in a navigable set that is serialized */
@Override
public int compareTo(Frequency o) {
return this.start_time - o.start_time;
}
public static class Loader extends Entity.Loader {
public Loader(GTFSFeed feed) {
super(feed, "frequencies");
}
@Override
protected boolean isRequired() {
return false;
}
@Override
public void loadOneRow() throws IOException {
Frequency f = new Frequency();
Trip trip = getRefField("trip_id", true, feed.trips);
f.sourceFileLine = row + 1; // offset line number by 1 to account for 0-based row index
f.trip_id = trip.trip_id;
f.start_time = getTimeField("start_time", true);
f.end_time = getTimeField("end_time", true);
f.headway_secs = getIntField("headway_secs", true, 1, 24 * 60 * 60);
f.exact_times = getIntField("exact_times", false, 0, 1);
f.feed = feed;
feed.frequencies.add(Fun.t2(f.trip_id, f));
}
}
}
