[OpenLayers-Users] boundedBy undefined with GML with defined boundedBy

[bartvde at osgis.nl]

Hi,

IIRC OpenLayers does not read the boundedBy of the whole
FeatureCollection, only of individual features. I've added my own custom
patch but it's only for GML v3, maybe you can do something similar for
GML.v2.

--- lib/OpenLayers/Format/GML/v3.js     2009-06-12 14:12:20.000000000 +0200
+++ v3.js       2009-06-12 14:17:46.000000000 +0200
@@ -229,6 +229,15 @@
                 var obj = {};
                 this.readers.gml.pos.apply(this, [node, obj]);
                 container.points[1] = obj.points[0];
+            },
+            "boundedBy": function(node, container) {
+                if (!this.boundedBy) {
+                    var obj = {};
+                    this.readChildNodes(node, obj);
+                    if (obj.components && obj.components.length > 0) {
+                        this.boundedBy = obj.components[0];
+                    }
+                }
             }
         }, OpenLayers.Format.GML.Base.prototype.readers["gml"]),
         "feature": OpenLayers.Format.GML.Base.prototype.readers["feature"],

Best regards,
Bart

>
> Hello,
>
> I'm trying to get the boundedBy of a whole feature collection (in this
> example
> there is only on feature).
>
> I follow this exemple http://trac.openlayers.org/ticket/1613
>     var g =  new OpenLayers.Format.GML.v2(options);
>     var features = g.read(response.responseXML || response.responseText);
>     // boundedBy will contain the boundary of the whole feature collection
>     // easy for zooming to the selection / collection
>     console.log(g.boundedBy);
>
> The result in my log is: undefined
>
> here is my script:
>     <script type="text/javascript">
>         function parseData(req) {
>
>         var format = new OpenLayers.Format.GML.v2({
>             featureType: "states",
>             featureNS: "http://www.openplans.org/topp",
>             geometryName: "the_geom",
>             xy: false
>         });
>
> 	    var features = format.read(req.responseXML || req.responseText);
> 		console.log(features.boundedBy);
>
>         }
>         function load() {
>             OpenLayers.loadURL("owls1.xml", "", null, parseData);
>         }
>     </script>
>
> The beginning of my owls1.xml:
> "<?xml version="1.0" encoding="utf-8"?>
> <wfs:FeatureCollection xmlns="http://www.opengis.net/wfs"
> xmlns:wfs="http://www.opengis.net/wfs"
> xmlns:topp="http://www.openplans.org/topp"
> xmlns:gml="http://www.opengis.net/gml"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
> xsi:schemaLocation="http://www.openplans.org/topp
> http://localhost:8080/geoserver/wfs?service=WFS&amp;version=1.0.0&amp;request=DescribeFeatureType&amp;typeName=topp:states
> http://www.opengis.net/wfs
> http://localhost:8080/geoserver/schemas/wfs/1.0.0/WFS-basic.xsd">
>
>   <gml:boundedBy>
>     <gml:Box srsName="http://www.opengis.net/gml/srs/epsg.xml#4326">
>
>       <gml:coordinates xmlns:gml="http://www.opengis.net/gml"
>       decimal="." cs="," ts="">-75.791435,38.44949
>       -75.045998,39.840008</gml:coordinates>
>     </gml:Box>
>   </gml:boundedBy>
>   <gml:featureMember>
>     <topp:states fid="states.3">
>       <gml:boundedBy>
>         <gml:Box srsName="http://www.opengis.net/gml/srs/epsg.xml#4326">
>
>           <gml:coordinates xmlns:gml="http://www.opengis.net/gml"
>           decimal="." cs="," ts="">-75.791435,38.44949
>           -75.045998,39.840008</gml:coordinates>
>         </gml:Box>
>       </gml:boundedBy>
> ... "
>
> Thanks for your help,
>
> Spirifer
> --
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