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/*
* Copyright 2012 - 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 org.traccar.helper.Log;
import javax.json.*;
public class GoogleReverseGeocoder implements ReverseGeocoder {
private final String url = "http://maps.googleapis.com/maps/api/geocode/json?latlng=%f,%f";
@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();
JsonObject result = (JsonObject) json.getJsonArray("results").get(0);
JsonArray components = result.getJsonArray("address_components");
for (JsonObject component : components.getValuesAs(JsonObject.class)) {
String value = component.getString("short_name");
for (JsonString type : component.getJsonArray("types").getValuesAs(JsonString.class)) {
if (type.getString().equals("street_number")) {
address.setHouse(value);
break;
} else if (type.getString().equals("route")) {
address.setStreet(value);
break;
} else if (type.getString().equals("locality")) {
address.setSettlement(value);
break;
} else if (type.getString().equals("administrative_area_level_2")) {
address.setDistrict(value);
break;
} else if (type.getString().equals("administrative_area_level_1")) {
address.setState(value);
break;
} else if (type.getString().equals("country")) {
address.setCountry(value);
break;
} else if (type.getString().equals("postal_code")) {
address.setPostcode(value);
break;
}
}
}
return format.format(address);
} catch(Exception error) {
Log.warning(error);
}
return null;
}
}
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