Add GML2 serializer for MultiPoint

src/ol/format/gml2.js

@@ -517,7 +517,31 @@ ol.format.GML2.prototype.writePoint_ = function(node, geometry, objectStack) {
  * @param {Array.<*>} objectStack Node stack.
  * @private
  */
-ol.format.GML2.prototype.writeMultiPoint_ = function(node, geometry, objectStack) {
+ol.format.GML2.prototype.writeMultiPoint_ = function(node, geometry,
+    objectStack) {
+  var context = objectStack[objectStack.length - 1];
+  var srsName = context['srsName'];
+  if (srsName) {
+    node.setAttribute('srsName', srsName);
+  }
+  var points = geometry.getPoints();
+  ol.xml.pushSerializeAndPop({node: node, srsName: srsName},
+      ol.format.GML2.POINTMEMBER_SERIALIZERS_,
+      ol.xml.makeSimpleNodeFactory('pointMember'), points,
+      objectStack, undefined, this);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @param {ol.geom.Point} point Point geometry.
+ * @param {Array.<*>} objectStack Node stack.
+ * @private
+ */
+ol.format.GML2.prototype.writePointMember_ = function(node, point, objectStack) {
+  var child = ol.xml.createElementNS(node.namespaceURI, 'Point');
+  node.appendChild(child);
+  this.writePoint_(child, point, objectStack);
 };
 
 
@@ -612,3 +636,15 @@ ol.format.GML2.RING_SERIALIZERS_ = {
     'innerBoundaryIs': ol.xml.makeChildAppender(ol.format.GML2.prototype.writeRing_)
   }
 };
+
+
+/**
+ * @type {Object.<string, Object.<string, ol.XmlSerializer>>}
+ * @private
+ */
+ol.format.GML2.POINTMEMBER_SERIALIZERS_ = {
+  'http://www.opengis.net/gml': {
+    'pointMember': ol.xml.makeChildAppender(
+        ol.format.GML2.prototype.writePointMember_)
+  }
+};

test/spec/ol/format/gml.test.js

@@ -223,6 +223,37 @@ describe('ol.format.GML2', function() {
 
       expect(node).to.xmleql(ol.xml.parse(expected));
     });
+
+    it('can serialize a Multi Point', function() {
+      var expected =
+        '<layer xmlns="http://www.openlayers.org/" fid="1">' +
+        '  <geometry>' +
+        '     <MultiPoint xmlns="http://www.opengis.net/gml" ' +
+        '                 srsName="EPSG:4326">' +
+        '       <pointMember>' +
+        '         <Point srsName="EPSG:4326">' +
+        '           <coordinates ' +
+        '                    decimal="." cs="," ts=" ">' +
+        '              2,1.1' +
+        '           </coordinates>' +
+        '         </Point>' +
+        '       </pointMember>' +
+        '      </MultiPoint>' +
+        '    </geometry>' +
+        '  </layer>';
+
+      var feature = new ol.Feature({
+        geometry: new ol.geom.MultiPoint([[1.1, 2]])
+      });
+      feature.setId(1);
+      var objectStack = [{
+        featureNS: featureNS,
+        srsName: 'EPSG:4326'
+      }];
+      format.writeFeatureElement(node, feature, objectStack);
+
+      expect(node).to.xmleql(ol.xml.parse(expected));
+    });
   });
 });