implement Serializable

src/main/java/fr/dudie/nominatim/model/Address.java

@@ -24,6 +24,7 @@
 
 import com.google.gson.annotations.SerializedName;
 import com.vividsolutions.jts.geom.Geometry;
+import java.io.Serializable;
 
 /**
  * Represents a search result.
@@ -72,7 +73,7 @@
  * 
  * @author Jérémie Huchet
  */
-public final class Address {
+public final class Address implements Serializable {
 
     /** The OpenStreetMap place id. */
     @SerializedName("place_id")

src/main/java/fr/dudie/nominatim/model/BoundingBox.java

@@ -22,6 +22,8 @@
  * [/license]
  */
 
+import java.io.Serializable;
+
 /**
  * Represents a viewport.
  * 
@@ -36,7 +38,7 @@
  * 
  * @author Jérémie Huchet
  */
-public class BoundingBox {
+public class BoundingBox implements Serializable {
 
     /** The north bound of the boundingbox. */
     private double north;

src/main/java/fr/dudie/nominatim/model/Element.java

@@ -22,6 +22,8 @@
  * [/license]
  */
 
+import java.io.Serializable;
+
 /**
  * Represents an address element or nameDetails element.
  * <p>
@@ -57,7 +59,7 @@
  * 
  * @author Jérémie Huchet
  */
-public class Element {
+public class Element implements Serializable {
 
     /** The element key. */
     private String key;

src/main/java/fr/dudie/nominatim/model/PolygonPoint.java

@@ -22,12 +22,14 @@
  * [/license]
  */
 
+import java.io.Serializable;
+
 /**
  * Represents a geographical location.
  * 
  * @author Jérémie Huchet
  */
-public class PolygonPoint {
+public class PolygonPoint implements Serializable {
 
     /** The point's longitude. */
     private double longitude;