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/*
* Copyright 2014 - 2015 Anton Tananaev (anton.tananaev@gmail.com)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.traccar.geocode;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;
import javax.json.Json;
import javax.json.JsonArray;
import javax.json.JsonObject;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.traccar.helper.Log;
import org.w3c.dom.Document;
public class NominatimReverseGeocoder implements ReverseGeocoder {
private final String url;
public NominatimReverseGeocoder() {
this("http://nominatim.openstreetmap.org/reverse");
}
public NominatimReverseGeocoder(String url) {
this.url = url + "?format=json&lat=%f&lon=%f&zoom=18&addressdetails=1";
}
@Override
public String getAddress(AddressFormat format, double latitude, double longitude) {
try {
Address address = new Address();
URLConnection conn = new URL(String.format(url, latitude, longitude)).openConnection();
JsonObject json = Json.createReader(new InputStreamReader(conn.getInputStream())).readObject().getJsonObject("address");
if (json.containsKey("house_number")) {
address.setHouse(json.getString("house_number"));
}
if (json.containsKey("road")) {
address.setStreet(json.getString("road"));
}
if (json.containsKey("village")) {
address.setSettlement(json.getString("village"));
}
if (json.containsKey("city")) {
address.setSettlement(json.getString("city"));
}
if (json.containsKey("state_district")) {
address.setDistrict(json.getString("state_district"));
}
if (json.containsKey("state")) {
address.setState(json.getString("state"));
}
if (json.containsKey("country_code")) {
address.setCountry(json.getString("country_code").toUpperCase());
}
if (json.containsKey("postcode")) {
address.setPostcode(json.getString("postcode"));
}
return format.format(address);
} catch(Exception error) {
Log.warning(error);
}
return null;
}
}
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