Add Nominatim reverse geocoding (fix #615)

1 files changed, 54 insertions, 0 deletions

diff --git a/src/org/traccar/geocode/NominatimReverseGeocoder.java b/src/org/traccar/geocode/NominatimReverseGeocoder.java
new file mode 100644
index 000000000..c9393da42
--- /dev/null
+++ b/src/org/traccar/geocode/NominatimReverseGeocoder.java
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2014 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.net.URL;
+import java.net.URLConnection;
+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(String url) {
+        this.url = url + "?format=xml&lat=%f&lon=%f&zoom=18&addressdetails=0";
+    }
+
+    @Override
+    public String getAddress(double latitude, double longitude) {
+        
+        try {
+
+            URLConnection conn = new URL(String.format(url, latitude, longitude)).openConnection();
+
+            DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
+            DocumentBuilder builder = factory.newDocumentBuilder();
+            Document doc = builder.parse(conn.getInputStream());
+            
+            return doc.getFirstChild().getLastChild().getFirstChild().getNodeValue();
+
+        } catch(Exception error) {
+            Log.warning(error);
+        }
+
+        return null;
+    }
+
+}