[OpenLayers-Users] OpenLayers.Ajax.getElementsByTagNameNS ???

[Sébastien Geindre]

Sébastien Geindre a écrit :
> hi everybody...
>
> Who could explain to me the OpenLayers.Ajax.getElementsByTagNameNS 
> function ???
>
> I try to parse my own GML polygon structure :
>  <gml:FeatureCollection>
>     <gml:featureMember>
>       <wims:WIMSCAT>
>         <wims:CATPolygon>
>            <wims:shape_major> 
>              <gml:Polygon>
>                <gml:exterior>
>                  <gml:LinearRing>
>                   <gml:coordinates> -2.30,53.80 -2.30,53.80 -1.90,54.20 
> -1.50,54.60 -1.30, ..... </gml:coordinates>
>                </gml:LinearRing>
>             </gml:exterior>
>         </gml:Polygon>
>       </wims:shape_major>
>     <wims:shape_minor>
>     <gml:Polygon><gml:exterior><gml:LinearRing>
>           <gml:coordinates>2.50,47.10 2.50,47.10 2.50,47.40 2.50,47.60 
> 2.60,47.70 2.70,47.70 2.90,47.70 3.00,47.60 3.00,47.40 3.00,47.20 
> 3.00,47.10 2.50,47.10 </gml:coordinates>
>      </gml:LinearRing></gml:exterior></gml:Polygon>
> </wims:shape_minor>
> ....
>
> with the following mosified code of OL/format/GML.js, but it never goes 
> through ....
>
>     parseFeature: function(xmlNode) {
>         var geom, polygon;
>         var p; // [points,bounds]
>
>         var feature = new OpenLayers.Feature.Vector();
>
>         if (xmlNode.firstChild.attributes && 
> xmlNode.firstChild.attributes['fid']) {
>             feature.fid = xmlNode.firstChild.attributes['fid'].nodeValue;
>         }
>           // match WIMSCAT
>         if (OpenLayers.Ajax.getElementsByTagNameNS(xmlNode, this.gmlns, 
> "wims", "WIMSCAT").length != 0) {
>             var WIMSCAT = 
> OpenLayers.Ajax.getElementsByTagNameNS(xmlNode, this.gmlns, "wims", 
> "WIMSCAT")[0];
>             geom = new OpenLayers.Geometry.MultiPolygon();
>            
>             if (OpenLayers.Ajax.getElementsByTagNameNS(WIMSCAT, 
> this.gmlns, "wims", "CATPolygon").length != 0) {
>                var CATPolygon = 
> OpenLayers.Ajax.getElementsByTagNameNS(WIMSCAT,this.gmlns, "wims", 
> "CATPolygon");
>               
>                for (var i = 0; i < CATPolygon.length; i++) {          
>                    if 
> (OpenLayers.Ajax.getElementsByTagNameNS(CATPolygon, this.gmlns, "wims", 
> "shape_major").length != 0) {
>                         var shape_major = 
> OpenLayers.Ajax.getElementsByTagNameNS(CATPolygon,this.gmlns, "wims", 
> "shape_major")[0];
>                         polygon = 
> this.parsePolygonNode(shape_major[0],geom);
>                         geom.addComponents(polygon);   
>                    }                   
>                    if 
> (OpenLayers.Ajax.getElementsByTagNameNS(CATPolygon, this.gmlns, "wims", 
> "shape_minor").length != 0) {
>                         var shape_minor = 
> OpenLayers.Ajax.getElementsByTagNameNS(CATPolygon,this.gmlns, "wims", 
> "shape_minor");
>                         for (var i = 0; i < shape_minor.length; i++) {
>                            polygon = 
> this.parsePolygonNode(shape_minor[i],geom);
>                            geom.addComponents(polygon);   
>                         }
>                    }                       
>                }
>             }
>         } else  .....
>
>   
My code was wrong....
i should give the right namespace to getElementByTagNameNS !!!

        // match WIMSCAT
        if (OpenLayers.Ajax.getElementsByTagNameNS(xmlNode, this.wimsns, 
"wims", "WIMSCAT").length != 0) {
            var WIMSCAT = 
OpenLayers.Ajax.getElementsByTagNameNS(xmlNode, this.wimsns, "wims", 
"WIMSCAT")[0];
            geom = new OpenLayers.Geometry.MultiPolygon();
           
            if (OpenLayers.Ajax.getElementsByTagNameNS(WIMSCAT, 
this.wimsns, "wims", "CATPolygon").length != 0) {
               var CATPolygon = 
OpenLayers.Ajax.getElementsByTagNameNS(WIMSCAT,this.wimsns, "wims", 
"CATPolygon");
              
               for (var i = 0; i < CATPolygon.length; i++) {          
                   if 
(OpenLayers.Ajax.getElementsByTagNameNS(CATPolygon[i], this.wimsns, 
"wims", "shape_major").length != 0) {
                        var shape_major = 
OpenLayers.Ajax.getElementsByTagNameNS(CATPolygon[i],this.wimsns, 
"wims", "shape_major")[0];
                        polygon = this.parsePolygonNode(shape_major,geom);
                        geom.addComponents(polygon);   
                   }                   
                   if 
(OpenLayers.Ajax.getElementsByTagNameNS(CATPolygon[i], this.wimsns, 
"wims", "shape_minor").length != 0) {
                        var shape_minor = 
OpenLayers.Ajax.getElementsByTagNameNS(CATPolygon[i],this.wimsns, 
"wims", "shape_minor");
                        for (var j = 0; j < shape_minor.length; j++) {
                           polygon = 
this.parsePolygonNode(shape_minor[j],geom);
                           geom.addComponents(polygon);   
                        }
                   }                       
               }
            }

-- 
Sébastien Geindre
DPREVI/AERO/DEV
sebastien.geindre at meteo.fr
05 61 07 84 93