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Diffstat (limited to 'src/org/traccar/geocode/JsonReverseGeocoder.java')
-rw-r--r--src/org/traccar/geocode/JsonReverseGeocoder.java58
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diff --git a/src/org/traccar/geocode/JsonReverseGeocoder.java b/src/org/traccar/geocode/JsonReverseGeocoder.java
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+++ b/src/org/traccar/geocode/JsonReverseGeocoder.java
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+/*
+ * Copyright 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 org.traccar.helper.Log;
+
+import javax.json.Json;
+import javax.json.JsonObject;
+import java.io.InputStreamReader;
+import java.io.Reader;
+import java.net.URL;
+import java.net.URLConnection;
+
+public abstract class JsonReverseGeocoder implements ReverseGeocoder {
+
+ private final String url;
+
+ public JsonReverseGeocoder(String url) {
+ this.url = url;
+ }
+
+ @Override
+ public String getAddress(AddressFormat format, double latitude, double longitude) {
+
+ try {
+ URLConnection conn = new URL(String.format(url, latitude, longitude)).openConnection();
+ Reader reader = new InputStreamReader(conn.getInputStream());
+ try {
+ Address address = parseAddress(Json.createReader(reader).readObject());
+ if (address != null) {
+ return format.format(address);
+ }
+ } finally {
+ reader.close();
+ }
+ } catch(Exception error) {
+ Log.warning(error);
+ }
+
+ return null;
+ }
+
+ protected abstract Address parseAddress(JsonObject json);
+
+}