make use of WFS paging backported to WFS 1.1, thanks ahocevar for the improved patch, r=ahocevar (closes #3213)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@11779 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Format/WFST/v1_1_0.js

@@ -109,8 +109,10 @@ OpenLayers.Format.WFST.v1_1_0 = OpenLayers.Class(
         "wfs": OpenLayers.Util.applyDefaults({
             "GetFeature": function(options) {
                 var node = OpenLayers.Format.WFST.v1.prototype.writers["wfs"]["GetFeature"].apply(this, arguments);
-                options && options.resultType && this.setAttributes(node, {
-                    resultType: options.resultType
+                options && this.setAttributes(node, {
+                    resultType: options.resultType,
+                    startIndex: options.startIndex,
+                    count: options.count
                 });
                 return node;
             },

lib/OpenLayers/Protocol/WFS/v1.js

@@ -167,6 +167,16 @@ OpenLayers.Protocol.WFS.v1 = OpenLayers.Class(OpenLayers.Protocol, {
      * });
      * (end)
      *
+     * To use a configured protocol to use WFS paging (if supported by the
+     * server), applications could do the following:
+     *
+     * (code)
+     * protocol.read({
+     *     startIndex: 0,
+     *     count: 50
+     * });
+     * (end)
+     *
      * To limit the attributes returned by the GetFeature request, applications
      * can use the propertyNames option to specify the properties to include in
      * the response:

tests/Format/WFST/v1_1_0.html

@@ -75,6 +75,13 @@
                 resultType: "hits",
                 propertyNames: ["STATE_NAME", "STATE_FIPS", "STATE_ABBR"]
             }
+        }, {
+            id: "getfeature1",
+            writer: "wfs:GetFeature",
+            arg: {
+                count: 10,
+                startIndex: 20
+            }
         }];
         
         t.plan(cases.length);
@@ -150,6 +157,16 @@
     </wfs:Query>
 </wfs:GetFeature>
 --></div>
+<div id="getfeature1"><!--
+<wfs:GetFeature service="WFS" version="1.1.0" startIndex="20" count="10" xmlns:topp="http://www.openplans.org/topp"
+                xmlns:wfs="http://www.opengis.net/wfs"
+                xmlns:ogc="http://www.opengis.net/ogc"
+                xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                xsi:schemaLocation="http://www.opengis.net/wfs http://schemas.opengis.net/wfs/1.1.0/wfs.xsd">
+    <wfs:Query xmlns:wfs="http://www.opengis.net/wfs" typeName="topp:states" srsName="urn:ogc:def:crs:EPSG::4326" xmlns:topp="http://www.openplans.org/topp">
+    </wfs:Query>
+</wfs:GetFeature>
+--></div>
 <div id="boundedBy"><!--
 <?xml version='1.0' encoding="ISO-8859-1" ?>
 <wfs:FeatureCollection