[OpenLayers-Dev] WFS layer and filter - more

[SWEYKAM at telefonica.net]

I have asked this before but probably should have provided more information. Please find below the data returned by the service.
I need to get hold on ‘geometria’, ‘nombre’ and ‘provincia’. So far, either with or without prefix, in lower case or camelcase I always get back a ‘ property name xxx could not be resolved’.

Hi list,
I have a particular WFS layer here which is giving me trouble and I need some help on identifying the correct geometryName and the filter property.

It’s gazetteer service and I want to apply comparison filters eventually. 

var myFilter = new OpenLayers.Filter.Comparison({
         type: "~",
         property: "nombreEntidad", //no
         value: "Madrid" 
});


So far I’ve managed to display points on my map using Strategy.Fixed without any filter:  

var myLayer = new OpenLayers.Layer.Vector( "my title",   {              
   strategies: [new OpenLayers.Strategy.Fixed()],
   protocol: new OpenLayers.Protocol.WFS({
      url: "http://www.idee.es/IDEE-WFS-Nomenclator-NGC/services?",
      featureType: 'Entidad', 
      featurePrefix: 'mne',
      featureNS :  "http://www.idee.es/mne",
      readFormat: new OpenLayers.Format.GML(),
      srsName: "EPSG:4230",
      version: '1.1.0',    
      maxFeatures: 10,
      extractAttributes: true
   }),
   projection: new OpenLayers.Projection("EPSG:4230"),
   // filter: myFilter;
});

I tried setting the filter property to "nombre" or "nombreEntidad" – with and without prefix, but no luck. ("PropertyName " nombreEntidad" cannot be resolved”).
For applying any spatial filters or just the BBOX strategy I’d have to indicate additionally the geometryName which I haven’t figured out either.

Besides, I can select features but the attribute values are null (feature.attributes have the expected keys but their values are null). 

Does anybody have a clue? I could post some XML if it’s of help.

I’d also like to know if there is any difference in terms of performance between 
1) filterStrategy, 2) filter, and 3) style with a rule and a filter. I guess the third option is slowest but what about the other 2 options?

Best regards

Any advice would be highly appreciated. Here comes the string of one point:

<wfs:FeatureCollection numberOfFeatures='1' xmlns:gml="http://www.opengis.net/gml" xmlns:wfs="http://www.opengis.net/wfs" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mne="http://www.idee.es/mne" xmlns:xlink="http://www.w3.org/1999/xlink" xsi:schemaLocation="http://www.idee.es/mne http://www.idee.es:80/IDEE-WFS-Nomenclator-NGC/services?SERVICE=WFS&amp;amp;VERSION=1.1.0&amp;amp;REQUEST=DescribeFeatureType&amp;amp;TYPENAME=mne:Entidad&amp;amp;NAMESPACE=xmlns(mne=http://www.idee.es/mne) http://www.opengis.net/wfs http://schemas.opengis.net/wfs/1.1.0/wfs.xsd"><gml:boundedBy><gml:Envelope srsName='EPSG:4230'><gml:pos srsDimension='2'>-4.9 38.2333333333333</gml:pos><gml:pos srsDimension='2'>-4.9 38.2333333333333</gml:pos></gml:Envelope></gml:boundedBy><gml:featureMember><mne:Entidad gml:id="ES.IGN.NGC_1018"><gml:boundedBy><gml:Envelope srsName='EPSG:4230'><gml:pos srsDimension='2'>-4.9 38.2333333333333</gml:pos><gml:pos srsDimension="2">-4.9 38.2333333333333</gml:pos></gml:Envelope></gml:boundedBy><mne:nombreEntidad><mne:NombreEntidad gml:id="ES.IGN.NGC_1018.GM2TENQ171644"><mne:nombre>Sierra Chimorra</mne:nombre><mne:idioma>spa</mne:idioma><mne:claseNombre>preferente</mne:claseNombre><mne:estatus>oficial</mne:estatus><mne:fuente>1:1 millón: Mapa de la Península Ibérica, Baleares y Canarias, escala 1:1.000.000. Instituto Geográfico Nacional, 2000</mne:fuente></mne:NombreEntidad>

</mne:nombreEntidad><mne:tipoEntidad><mne:TipoEntidad gml:id="ES.IGN.NGC.TP.J5JE6R2S171644"><mne:tipo>OROGR</mne:tipo><mne:catalogoEntidades>URL:http://www.idee.es/show.do?to=pideep_conciso.ES</mne:catalogoEntidades></mne:TipoEntidad>

</mne:tipoEntidad><mne:tipoEntidad><mne:TipoEntidad gml:id="ES.IGN.NGC.TP.KNUWK4TSME171644"><mne:tipo>Sierra</mne:tipo><mne:catalogoEntidades>URL:http://www.idee.es/show.do?to=pideep_conciso.ES</mne:catalogoEntidades></mne:TipoEntidad>

</mne:tipoEntidad><mne:posicionEspacial><mne:PosicionEspacial gml:id="ES.IGN.NGC.PS.GEYDKNBUHA171644"><gml:boundedBy><gml:Envelope srsName='EPSG:4230'><gml:pos srsDimension='2'>-4.9 38.2333333333333</gml:pos><gml:pos srsDimension="2">-4.9 38.2333333333333</gml:pos></gml:Envelope></gml:boundedBy><mne:geometria><gml:Point srsName="EPSG:4230">

<gml:pos srsDimension="2">-4.9 38.2333333333333</gml:pos>

</gml:Point></mne:geometria></mne:PosicionEspacial>

</mne:posicionEspacial><mne:entidadLocal><mne:EntidadLocal gml:id="ES.IGN.NGC.EL.IPZXEZDPMJQQ171644"><mne:comunidadAutonoma>Andalucía</mne:comunidadAutonoma><mne:provincia>Córdoba</mne:provincia></mne:EntidadLocal>

</mne:entidadLocal><mne:codificacion><mne:Codificacion gml:id="ES.IGN.NGC.CO.NGC_1018171644"><mne:codigo>NGC_1018</mne:codigo><mne:sistemaCodificacion>Nomenclátor Geográfico Conciso 1.0. Instituto Geográfico Nacional</mne:sistemaCodificacion></mne:Codificacion>

</mne:codificacion><mne:mapa><mne:Mapa gml:id="ES.IGN.NGC.MA.JVKE4NJQ.GA4DQMA171644"><mne:serie>MTN50</mne:serie><mne:hoja>0880</mne:hoja></mne:Mapa>

</mne:mapa></mne:Entidad>

</gml:featureMember></wfs:FeatureCollection>
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