[OpenLayers-Users] How to extract "fid" from GML

Thu, 07 Oct 2010 02:38:03 -0700 

Hi
David Alda Fernandez de Lezea wrote:

Hi,

I'm using geoserver in back-end, and the problem was that when I made the 
getfeaureinfo request the returned response contained the '1' character (maybe 
is the number of matched results) so when I was parsing the gml I got no 
features and no errors. When I realized what the problema was, I could make it 
work with the following code:

data = data.substring(0,data.length-1);

var theParser = new OpenLayers.Format.GML();
theParser.internalProjection = null;
theParser.externalProjection = null;
theParser.extractStyles      = false;
theParser.extractAttributes  = true;
var features = theParser.read(data);

//Iterate through features
...


Yup, just before I read your post ... I solved my problem to.
Attached is 2 xml file
1. gml21.xml : This is the original saved from GetFeatureInfo call
2. gml21a.xml : Same as above but manualy rearranged just for human readability factor 

Curently my parsing fungtion is :
//------START Function
           function setHTML(req) {
                g =  new OpenLayers.Format.GML();
               html = ""
               features = g.read(req.responseText);
               for(var feat in features) {
html += "Feature: Geometry: "+ features[feat].geometry+","; 
                   html += "<ul>";
                   for (var j in features[feat].attributes) {
html += "<li>"+j+":"+features[feat].attributes[j]+"</li>"; 
                   }
                   html += "</ul>"
               }
               document.getElementById('nodeList').innerHTML = html;
           };

//------STOP Function
The current result is :
//----START result
Feature: Geometry: POINT(110.36599 -7.80068),

   * label:NGUPASAN
   * type:0xd00
   * level:1

//----STOP result

Part of the GML says :
//--START GML
   <gml:featureMember>
       <spoin:points fid="points.205508">
           <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=" ">110.36599,-7.80068 110.36599,-7.80068</gml:coordinates> 
               </gml:Box>
           </gml:boundedBy>
           <spoin:label>NGUPASAN</spoin:label>
           <spoin:type>0xd00</spoin:type>
           <spoin:level>1</spoin:level>
           <spoin:the_geom>
<gml:Point srsName="http://www.opengis.net/gml/srs/epsg.xml#4326";> <gml:coordinates xmlns:gml="http://www.opengis.net/gml"; decimal="." cs="," ts=" ">110.36599,-7.80068</gml:coordinates> 
               </gml:Point>
           </spoin:the_geom>
       </spoin:points>
   </gml:featureMember>
//--START GML


My Question is :
How to extract "FID" from the GML (inside <spoin:points fid="points.205508">) ? 
Specialy that "205508" number.

Sincerely
-bino-


<?xml version="1.0" encoding="UTF-8"?><wfs:FeatureCollection xmlns="http://www.opengis.net/wfs"; xmlns:wfs="http://www.opengis.net/wfs"; xmlns:gml="http://www.opengis.net/gml"; xmlns:spoin="http://jabber.int/spoin"; xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; xsi:schemaLocation="http://jabber.int/spoin http://192.168.10.233:8080/geoserver/wfs?service=WFS&amp;version=1.0.0&amp;request=DescribeFeatureType&amp;typeName=spoin%3Apoints http://www.opengis.net/wfs http://192.168.10.233:8080/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=" ">-1,-1 0,0</gml:coordinates></gml:Box></gml:boundedBy></wfs:FeatureCollection>
<?xml version="1.0" encoding="UTF-8"?>
<wfs:FeatureCollection xmlns="http://www.opengis.net/wfs"; 
		xmlns:wfs="http://www.opengis.net/wfs"; 
		xmlns:gml="http://www.opengis.net/gml"; 
		xmlns:spoin="http://jabber.int/spoin"; 
		xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; 
		xsi:schemaLocation="http://jabber.int/spoin 
			http://192.168.10.233:8080/geoserver/wfs?service=WFS&amp;version=1.0.0&amp;request=DescribeFeatureType&amp;typeName=spoin%3Apoints 
			http://www.opengis.net/wfs http://192.168.10.233:8080/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=" ">110.36599,-7.80068 110.36599,-7.80068</gml:coordinates>
		</gml:Box>
	</gml:boundedBy>
	<gml:featureMember>
		<spoin:points fid="points.205508">
			<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=" ">110.36599,-7.80068 110.36599,-7.80068</gml:coordinates>
				</gml:Box>
			</gml:boundedBy>
			<spoin:label>NGUPASAN</spoin:label>
			<spoin:type>0xd00</spoin:type>
			<spoin:level>1</spoin:level>
			<spoin:the_geom>
				<gml:Point srsName="http://www.opengis.net/gml/srs/epsg.xml#4326";>
					<gml:coordinates xmlns:gml="http://www.opengis.net/gml"; decimal="." cs="," ts=" ">110.36599,-7.80068</gml:coordinates>
				</gml:Point>
			</spoin:the_geom>
		</spoin:points>
	</gml:featureMember>
</wfs:FeatureCollection>

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