giving the WFST format a multi option, which makes sure that Multi geometries are written in transactions. r=bartvde (closes #3407)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@12168 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Format/WFST/v1.js

@@ -190,6 +190,10 @@ OpenLayers.Format.WFST.v1 = OpenLayers.Class(OpenLayers.Format.XML, {
      *     in *modified.attributes* will be included. If *modified.geometry*
      *     is not set, the geometry will not be included.
      *
+     * Valid options include:
+     * - *multi* {Boolean} If set to true, geometries will be casted to
+     *   Multi geometries before writing.
+     *
      * Returns:
      * {String} A serialized WFS transaction.
      */
@@ -246,11 +250,23 @@ OpenLayers.Format.WFST.v1 = OpenLayers.Class(OpenLayers.Format.XML, {
                 var features = obj && obj.features;
                 var options = obj && obj.options;
                 if(features) {
-                    var name, feature;
+                    var name, feature, geometry;
                     for(i=0, len=features.length; i<len; ++i) {
                         feature = features[i];
                         name = this.stateName[feature.state];
                         if(name) {
+                            geometry = feature.geometry;
+                            if (options && options.multi === true && geometry) {
+                                var type = geometry.CLASS_NAME.split(".").pop();
+                                if (type.indexOf("Multi") != 0) {
+                                    var Cls = OpenLayers.Geometry["Multi" + type];
+                                    if (Cls) {
+                                        feature = OpenLayers.Util.applyDefaults({
+                                            geometry: new Cls([geometry])
+                                        }, feature);
+                                    }
+                                }
+                            }
                             this.writeNode(name, feature, node);
                         }
                     }

lib/OpenLayers/Protocol/WFS/v1.js

@@ -105,6 +105,9 @@ OpenLayers.Protocol.WFS.v1 = OpenLayers.Class(OpenLayers.Protocol, {
      * geometryName - {String} Name of geometry attribute.  If featureNS is not
      *     configured, the default is null to avoid failing on BBOX filters,
      *     and it will be set on <read>. Otherwise, the default is 'the_geom'.
+     * multi - {Boolean} If set to true, geometries will be casted to Multi
+     *     geometries before they are written in a transaction. No casting will
+     *     be done when reading features.
      */
     initialize: function(options) {
         OpenLayers.Protocol.prototype.initialize.apply(this, [options]);