Add support for features with multiples geometries

src/ol/feature.exports

@@ -1,4 +1,6 @@
 @exportSymbol ol.Feature
 @exportProperty ol.Feature.prototype.getGeometry
+@exportProperty ol.Feature.prototype.getGeometryName
+@exportProperty ol.Feature.prototype.setGeometryName
 @exportProperty ol.Feature.prototype.getId
 @exportProperty ol.Feature.prototype.setId

src/ol/feature.js

@@ -40,6 +40,12 @@ ol.Feature = function(opt_geometryOrValues) {
    */
   this.id_ = undefined;
 
+  /**
+   * @type {string}
+   * @private
+   */
+  this.geometryName_ = ol.FeatureProperty.GEOMETRY;
+
   /**
    * @private
    * @type {number}
@@ -89,7 +95,7 @@ ol.Feature.prototype.dispatchChangeEvent = function() {
  */
 ol.Feature.prototype.getGeometry = function() {
   return /** @type {ol.geom.Geometry|undefined} */ (
-      this.get(ol.FeatureProperty.GEOMETRY));
+      this.get(this.geometryName_));
 };
 goog.exportProperty(
     ol.Feature.prototype,
@@ -105,6 +111,14 @@ ol.Feature.prototype.getId = function() {
 };
 
 
+/**
+ * @return {string} Geometry property name.
+ */
+ol.Feature.prototype.getGeometryName = function() {
+  return this.geometryName_;
+};
+
+
 /**
  * @return {number} Revision.
  */
@@ -163,7 +177,7 @@ ol.Feature.prototype.handleStyleFunctionChange_ = function() {
  * @param {ol.geom.Geometry|undefined} geometry Geometry.
  */
 ol.Feature.prototype.setGeometry = function(geometry) {
-  this.set(ol.FeatureProperty.GEOMETRY, geometry);
+  this.set(this.geometryName_, geometry);
 };
 goog.exportProperty(
     ol.Feature.prototype,
@@ -189,3 +203,12 @@ goog.exportProperty(
 ol.Feature.prototype.setId = function(id) {
   this.id_ = id;
 };
+
+
+/**
+ * @param {string} name Geometry property name.
+ */
+ol.Feature.prototype.setGeometryName = function(name) {
+  this.geometryName_ = name;
+  this.handleGeometryChanged_();
+};