private void recordVehicle(VehiclePosition vehicle, DataCopier copier)
throws SQLException, Exception {
if (!vehicle.hasPosition()) {
throw new Exception("No position found");
}
PreparedStatement stmt = null;
DataCopierRow row = null;
if (copier == null) {
stmt = mStatements.get(STVEHICLE);
} else {
row = new DataCopierRow();
}
int congestionLevel =
vehicle.hasCongestionLevel()
? vehicle.getCongestionLevel().getNumber()
: CongestionLevel.UNKNOWN_CONGESTION_LEVEL_VALUE;
int vehicleStatus =
vehicle.hasCurrentStatus()
? vehicle.getCurrentStatus().getNumber()
: VehicleStopStatus.IN_TRANSIT_TO_VALUE;
int stopSequence = vehicle.hasCurrentStopSequence() ? vehicle.getCurrentStopSequence() : -1;
if (row == null) {
stmt.setInt(1, congestionLevel);
stmt.setInt(2, vehicleStatus);
stmt.setInt(3, stopSequence);
} else {
row.add(congestionLevel);
row.add(vehicleStatus);
row.add(stopSequence);
}
Position pos = vehicle.getPosition();
if (pos.hasBearing()) {
if (row == null) {
stmt.setFloat(4, pos.getBearing());
} else {
row.add(pos.getBearing());
}
} else {
if (row == null) {
stmt.setNull(4, Types.FLOAT);
} else {
row.addNull();
}
}
if (pos.hasOdometer()) {
if (row == null) {
stmt.setDouble(5, pos.getOdometer());
} else {
row.add(pos.getOdometer());
}
} else {
if (row == null) {
stmt.setNull(5, Types.DOUBLE);
} else {
row.addNull();
}
}
if (pos.hasSpeed()) {
if (row == null) {
stmt.setFloat(6, pos.getSpeed());
} else {
row.add(pos.getSpeed());
}
} else {
if (row == null) {
stmt.setNull(6, Types.FLOAT);
} else {
row.addNull();
}
}
if (pos.hasLatitude()) {
if (row == null) {
stmt.setFloat(7, pos.getLatitude());
} else {
row.add(pos.getLatitude());
}
} else {
if (row == null) {
stmt.setNull(7, Types.FLOAT);
} else {
row.addNull();
}
}
if (pos.hasLongitude()) {
if (row == null) {
stmt.setFloat(8, pos.getLongitude());
} else {
row.add(pos.getLongitude());
}
} else {
if (row == null) {
stmt.setNull(8, Types.FLOAT);
} else {
row.addNull();
}
}
if (vehicle.hasStopId()) {
if (row == null) {
stmt.setString(9, vehicle.getStopId());
} else {
row.add(vehicle.getStopId());
}
} else {
if (row == null) {
stmt.setNull(9, Types.VARCHAR);
} else {
row.addNull();
}
}
if (vehicle.hasTimestamp()) {
if (row == null) {
stmt.setLong(10, vehicle.getTimestamp());
} else {
row.add(vehicle.getTimestamp());
}
} else {
if (row == null) {
stmt.setNull(10, Types.INTEGER);
} else {
row.addNull();
}
}
if (vehicle.hasTrip()) {
TripDescriptor trip = vehicle.getTrip();
if (trip.hasScheduleRelationship()) {
if (row == null) {
stmt.setInt(11, trip.getScheduleRelationship().getNumber());
} else {
row.add(trip.getScheduleRelationship().getNumber());
}
} else {
if (row == null) {
stmt.setNull(11, Types.INTEGER);
} else {
row.addNull();
}
}
if (trip.hasStartDate()) {
if (row == null) {
stmt.setString(12, trip.getStartDate());
} else {
row.add(trip.getStartDate());
}
} else {
if (row == null) {
stmt.setNull(12, Types.VARCHAR);
} else {
row.addNull();
}
}
if (trip.hasStartTime()) {
if (row == null) {
stmt.setString(13, trip.getStartTime());
} else {
row.add(trip.getStartTime());
}
} else {
if (row == null) {
stmt.setNull(13, Types.VARCHAR);
} else {
row.addNull();
}
}
if (trip.hasTripId()) {
if (row == null) {
stmt.setString(14, trip.getTripId());
} else {
row.add(trip.getTripId());
}
} else {
if (row == null) {
stmt.setNull(14, Types.VARCHAR);
} else {
row.addNull();
}
}
if (trip.hasRouteId()) {
if (row == null) {
stmt.setString(15, trip.getRouteId());
} else {
row.add(trip.getRouteId());
}
} else {
if (row == null) {
stmt.setNull(15, Types.VARCHAR);
} else {
row.addNull();
}
}
} else {
if (row == null) {
stmt.setNull(11, Types.INTEGER);
stmt.setNull(12, Types.VARCHAR);
stmt.setNull(13, Types.VARCHAR);
stmt.setNull(14, Types.VARCHAR);
stmt.setNull(15, Types.VARCHAR);
} else {
row.addNull(5);
}
}
if (vehicle.hasVehicle()) {
VehicleDescriptor vd = vehicle.getVehicle();
if (vd.hasId()) {
if (row == null) {
stmt.setString(16, vd.getId());
} else {
row.add(vd.getId());
}
} else {
if (row == null) {
stmt.setNull(16, Types.VARCHAR);
} else {
row.addNull();
}
}
if (vd.hasLabel()) {
if (row == null) {
stmt.setString(17, vd.getLabel());
} else {
row.add(vd.getLabel());
}
} else {
if (row == null) {
stmt.setNull(17, Types.VARCHAR);
} else {
row.addNull();
}
}
if (vd.hasLicensePlate()) {
if (row == null) {
stmt.setString(18, vd.getLicensePlate());
} else {
row.add(vd.getLicensePlate());
}
} else {
if (row == null) {
stmt.setNull(18, Types.VARCHAR);
} else {
row.addNull();
}
}
} else {
if (row == null) {
stmt.setNull(16, Types.VARCHAR);
stmt.setNull(17, Types.VARCHAR);
stmt.setNull(18, Types.VARCHAR);
} else {
row.addNull(3);
}
}
Date recorded = new Date();
if (row == null) {
stmt.setInt(19, (int) (recorded.getTime() / 1000));
} else {
row.add((int) (recorded.getTime() / 1000));
}
if (stmt == null) {
copier.add(row);
} else {
stmt.execute();
}
}
/**
* This method downloads the latest vehicle data, processes each vehicle in turn, and create a
* GTFS-realtime feed of trip updates and vehicle positions as a result.
*/
private void refreshVehicles() throws IOException, JSONException {
/** We download the vehicle details as an array of JSON objects. */
JSONArray vehicleArray = downloadVehicleDetails();
/**
* The FeedMessage.Builder is what we will use to build up our GTFS-realtime feeds. We create a
* feed for both trip updates and vehicle positions.
*/
FeedMessage.Builder tripUpdates = GtfsRealtimeLibrary.createFeedMessageBuilder();
FeedMessage.Builder vehiclePositions = GtfsRealtimeLibrary.createFeedMessageBuilder();
/** We iterate over every JSON vehicle object. */
for (int i = 0; i < vehicleArray.length(); ++i) {
JSONObject obj = vehicleArray.getJSONObject(i);
String trainNumber = obj.getString("trainno");
String route = obj.getString("dest");
String stopId = obj.getString("nextstop");
double lat = obj.getDouble("lat");
double lon = obj.getDouble("lon");
int delay = obj.getInt("late");
/**
* We construct a TripDescriptor and VehicleDescriptor, which will be used in both trip
* updates and vehicle positions to identify the trip and vehicle. Ideally, we would have a
* trip id to use for the trip descriptor, but the SEPTA api doesn't include it, so we settle
* for a route id instead.
*/
TripDescriptor.Builder tripDescriptor = TripDescriptor.newBuilder();
tripDescriptor.setRouteId(route);
VehicleDescriptor.Builder vehicleDescriptor = VehicleDescriptor.newBuilder();
vehicleDescriptor.setId(trainNumber);
/**
* To construct our TripUpdate, we create a stop-time arrival event for the next stop for the
* vehicle, with the specified arrival delay. We add the stop-time update to a TripUpdate
* builder, along with the trip and vehicle descriptors.
*/
StopTimeEvent.Builder arrival = StopTimeEvent.newBuilder();
arrival.setDelay(delay * 60);
StopTimeUpdate.Builder stopTimeUpdate = StopTimeUpdate.newBuilder();
stopTimeUpdate.setArrival(arrival);
stopTimeUpdate.setStopId(stopId);
TripUpdate.Builder tripUpdate = TripUpdate.newBuilder();
tripUpdate.addStopTimeUpdate(stopTimeUpdate);
tripUpdate.setTrip(tripDescriptor);
tripUpdate.setVehicle(vehicleDescriptor);
/**
* Create a new feed entity to wrap the trip update and add it to the GTFS-realtime trip
* updates feed.
*/
FeedEntity.Builder tripUpdateEntity = FeedEntity.newBuilder();
tripUpdateEntity.setId(trainNumber);
tripUpdateEntity.setTripUpdate(tripUpdate);
tripUpdates.addEntity(tripUpdateEntity);
/**
* To construct our VehiclePosition, we create a position for the vehicle. We add the position
* to a VehiclePosition builder, along with the trip and vehicle descriptors.
*/
Position.Builder position = Position.newBuilder();
position.setLatitude((float) lat);
position.setLongitude((float) lon);
VehiclePosition.Builder vehiclePosition = VehiclePosition.newBuilder();
vehiclePosition.setPosition(position);
vehiclePosition.setTrip(tripDescriptor);
vehiclePosition.setVehicle(vehicleDescriptor);
/**
* Create a new feed entity to wrap the vehicle position and add it to the GTFS-realtime
* vehicle positions feed.
*/
FeedEntity.Builder vehiclePositionEntity = FeedEntity.newBuilder();
vehiclePositionEntity.setId(trainNumber);
vehiclePositionEntity.setVehicle(vehiclePosition);
vehiclePositions.addEntity(vehiclePositionEntity);
}
/** Build out the final GTFS-realtime feed messagse and save them. */
_gtfsRealtimeProvider.setTripUpdates(tripUpdates.build());
_gtfsRealtimeProvider.setVehiclePositions(vehiclePositions.build());
_log.info("vehicles extracted: " + tripUpdates.getEntityCount());
}
