org.opentripplanner.geocoder.BackupGeocoder Maven / Gradle / Ivy
package org.opentripplanner.geocoder;
import org.locationtech.jts.geom.Envelope;
/**
* Multiplexe two geocoders: a master and a backup.
*
* Try to get results from the master, if no result is found, or an error occurs, switch to the
* backup. One can chain multiple backup by using again a multiplexer as the backup.
*/
public class BackupGeocoder implements Geocoder {
private Geocoder masterGeocoder;
private Geocoder backupGeocoder;
public BackupGeocoder(Geocoder masterGeocoder, Geocoder backupGeocoder) {
this.masterGeocoder = masterGeocoder;
this.backupGeocoder = backupGeocoder;
}
@Override
public GeocoderResults geocode(String address, Envelope bbox) {
GeocoderResults retval = masterGeocoder.geocode(address, bbox);
if (retval.getCount() == 0 || retval.getError() != null) {
retval = backupGeocoder.geocode(address, bbox);
}
return retval;
}
}