Java tutorial
/* This program is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. 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 org.opentripplanner.graph_builder.model; import java.io.File; import java.io.IOException; import java.net.URL; import java.util.HashMap; import java.util.Map; import java.util.zip.ZipFile; import lombok.Getter; import lombok.Setter; import org.apache.http.client.ClientProtocolException; import org.onebusaway.csv_entities.CsvInputSource; import org.onebusaway.csv_entities.ZipFileCsvInputSource; import org.opentripplanner.graph_builder.impl.DownloadableGtfsInputSource; import org.opentripplanner.util.HttpUtils; import org.slf4j.Logger; import org.slf4j.LoggerFactory; public class GtfsBundle { private static final Logger LOG = LoggerFactory.getLogger(GtfsBundle.class); private File path; private URL url; private String defaultAgencyId; private CsvInputSource csvInputSource; private Boolean defaultBikesAllowed = true; private boolean transfersTxtDefinesStationPaths = false; /** * Create direct transfers between the constituent stops of each parent station. * This is different from "linking stops to parent stations" below. */ @Getter @Setter private boolean parentStationTransfers = false; /** * Connect parent station vertices to their constituent stops to allow beginning and * ending paths (itineraries) at them. */ @Getter @Setter private boolean linkStopsToParentStations = false; private Map<String, String> agencyIdMappings = new HashMap<String, String>(); private int defaultStreetToStopTime; private double maxStopToShapeSnapDistance = 150; @Getter @Setter private Boolean useCached = null; // null means use global default from GtfsGB || true @Getter @Setter private File cacheDirectory = null; // null means use default from GtfsGB || system temp dir public GtfsBundle() { } public GtfsBundle(File gtfsFile) { this.setPath(gtfsFile); } public void setPath(File path) { this.path = path; } public void setUrl(URL url) { this.url = url; } public void setCsvInputSource(CsvInputSource csvInputSource) { this.csvInputSource = csvInputSource; } public String getDataKey() { return path + ";" + url + ";" + (csvInputSource != null ? csvInputSource.hashCode() : ""); } public CsvInputSource getCsvInputSource() throws IOException { if (csvInputSource == null) { if (path != null) { csvInputSource = new ZipFileCsvInputSource(new ZipFile(path)); } else if (url != null) { DownloadableGtfsInputSource isrc = new DownloadableGtfsInputSource(); isrc.setUrl(url); if (cacheDirectory != null) isrc.setCacheDirectory(cacheDirectory); if (useCached != null) isrc.setUseCached(useCached); csvInputSource = isrc; } } return csvInputSource; } public String toString() { String src; if (path != null) { src = path.toString(); } else if (url != null) { src = url.toString(); } else { src = "(no source)"; } return "GTFS bundle at " + src; } /** * So that you can load multiple gtfs feeds into the same database / system without entity id * collisions, everything has an agency id, including entities like stops, shapes, and service * ids that don't explicitly have an agency id (as opposed to routes + trips + stop times). * However, the spec doesn't currently have a method to specify which agency a stop * should be assigned to in the case of multiple agencies being specified in the same feed. * Routes (and thus everything belonging to them) do have an agency id, but stops don't. * The defaultAgencyId allows you to define which agency will be used as the default * when figuring out which agency a stop should be assigned to (also applies to shapes + service * ids as well). If not specified, the first agency in the agency list will be used. */ public String getDefaultAgencyId() { return defaultAgencyId; } public void setDefaultAgencyId(String defaultAgencyId) { this.defaultAgencyId = defaultAgencyId; } public Map<String, String> getAgencyIdMappings() { return agencyIdMappings; } public void setAgencyIdMappings(Map<String, String> agencyIdMappings) { this.agencyIdMappings = agencyIdMappings; } /** * When a trip doesn't contain any bicycle accessibility information, should taking a bike * along a transit trip be permitted? * A trip doesn't contain bicycle accessibility information if both route_short_name and * trip_short_name contain missing/0 values. */ public Boolean getDefaultBikesAllowed() { return defaultBikesAllowed; } public void setDefaultBikesAllowed(Boolean defaultBikesAllowed) { this.defaultBikesAllowed = defaultBikesAllowed; } /** * Transfers.txt usually specifies where the transit operator prefers people to transfer, * due to schedule structure and other factors. * * However, in systems like the NYC subway system, transfers.txt can partially substitute * for the missing pathways.txt file. In this case, transfer edges will be created between * stops where transfers are defined. * * @return */ public boolean doesTransfersTxtDefineStationPaths() { return transfersTxtDefinesStationPaths; } public void setTransfersTxtDefinesStationPaths(boolean transfersTxtDefinesStationPaths) { this.transfersTxtDefinesStationPaths = transfersTxtDefinesStationPaths; } public int getDefaultStreetToStopTime() { return defaultStreetToStopTime; } public void setDefaultStreetToStopTime(int time) { defaultStreetToStopTime = time; } public void checkInputs() { if (csvInputSource != null) { LOG.warn("unknown CSV source type; cannot check inputs"); return; } if (path != null) { if (!path.exists()) { throw new RuntimeException("GTFS Path " + path + " does not exist."); } if (!path.canRead()) { throw new RuntimeException("GTFS Path " + path + " cannot be read."); } } else if (url != null) { try { HttpUtils.testUrl(url.toExternalForm()); } catch (ClientProtocolException e) { throw new RuntimeException("Error connecting to " + url.toExternalForm() + "\n" + e); } catch (IOException e) { throw new RuntimeException("GTFS url " + url.toExternalForm() + " cannot be read.\n" + e); } } } public double getMaxStopToShapeSnapDistance() { return maxStopToShapeSnapDistance; } public void setMaxStopToShapeSnapDistance(double maxStopToShapeSnapDistance) { this.maxStopToShapeSnapDistance = maxStopToShapeSnapDistance; } }