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/**
*
*/
package org.traccar;
import org.traccar.helper.DistanceCalculator;
import org.traccar.helper.Log;
import org.traccar.model.Position;
/**
* <p>
* Odometer - total mileage calculation handler
* </p>
*
* @author Amila Silva
*
*/
public class OdometerHandler extends BaseDataHandler {
public OdometerHandler() {
Log.debug("System based odometer calculation enabled for all devices");
}
private Position getLastPosition(long deviceId) {
if (Context.getConnectionManager() != null) {
return Context.getConnectionManager().getLastPosition(deviceId);
}
return null;
}
private Position calculateDistance(Position position) {
Position last = getLastPosition(position.getDeviceId());
if (last != null) {
// set odometer only on movement
double odometer = 0.0;
if (last.getSpeed() == 0 && position.getSpeed() == 0) {
odometer = last.getOdometer();
} else {
double distance = DistanceCalculator.distance(
position.getLatitude(), position.getLongitude(),
last.getLatitude(), last.getLongitude());
distance = Math.round((distance) * 100.0) / 100.0;
odometer = distance + last.getOdometer();
}
position.setOdometer(odometer);
}
return position;
}
@Override
protected Position handlePosition(Position position) {
return calculateDistance(position);
}
}
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