Merge pull request #729 from tschaub/date

WFS date filter literal not sent as ISO format

lib/OpenLayers/Format/Filter/v1.js

@@ -6,6 +6,7 @@
  * @requires OpenLayers/Format/Filter.js
  * @requires OpenLayers/Format/XML.js
  * @requires OpenLayers/Filter/Function.js
+ * @requires OpenLayers/BaseTypes/Date.js
  */
 
 /**
@@ -246,6 +247,25 @@ OpenLayers.Format.Filter.v1 = OpenLayers.Class(OpenLayers.Format.XML, {
         obj.filters.push(filter);
     },
 
+    /**
+     * APIMethod: encodeLiteral
+     * Generates the string representation of a value for use in <Literal> 
+     *     elements.  The default encoder writes Date values as ISO 8601 
+     *     strings.
+     *
+     * Parameters:
+     * value - {Object} Literal value to encode
+     *
+     * Returns:
+     * {String} String representation of the provided value.
+     */
+    encodeLiteral: function(value) {
+        if (value instanceof Date) {
+            value = OpenLayers.Date.toISOString(value);
+        }
+        return value;
+    },
+
     /**
      * Method: writeOgcExpression
      * Limited support for writing OGC expressions. Currently it supports
@@ -405,9 +425,10 @@ OpenLayers.Format.Filter.v1 = OpenLayers.Class(OpenLayers.Format.XML, {
                 });
             },
             "Literal": function(value) {
-                // no ogc:expression handling for now
+                var encode = this.encodeLiteral ||
+                    OpenLayers.Format.Filter.v1.prototype.encodeLiteral;
                 return this.createElementNSPlus("ogc:Literal", {
-                    value: value
+                    value: encode(value)
                 });
             },
             "LowerBoundary": function(filter) {