[OpenLayers-Users] How to use OpenLayers requesting WFS with Spatial Operations

[Roald de Wit]

Hi Myeonghun Jeong,

Can you explain what you try to do? Do you want to display a WFS layer 
on your map that automatically requests the correct features within the 
BBOX of the viewport or do you want to have control over what BBOX you 
send to the WFS server and send your WFS 'manually'?

Maybe it is good to have a look at some examples (type WFS in the search 
box): [1].

Regards, Roald

[1] http://www.openlayers.org/dev/examples/

Myeong Hun Jeong wrote:
>
> Dear list.
>
> I want to know how to use openlayers when I request WFS with Spatial 
> Operations.
>
> For example, at GeoServer Demo Request page, I can fin 
> WFS_getFeatureBBox01.1.url and WFS_getFeatureBBox01.1.xml samples.
>
> So, the request is that
>
> http://localhost:8888/geoserver/wfs?request=GetFeature&version=1.0.0&typeName=topp:states&propertyName=STATE_NAME,PERSONS&BBOX=-75.102613,40.212597,-72.361859,41.512517 
> <http://localhost:8888/geoserver/wfs?request=GetFeature&version=1.0.0&typeName=topp:states&propertyName=STATE_NAME,PERSONS&BBOX=-75.102613,40.212597,-72.361859,41.512517>
>
> or
>
> http://localhost:8888/geoserver/wfs
>
> <wfs:GetFeature service="WFS" version="1.1.0"
>
>   xmlns:topp="http://www.openplans.org/topp"
>
>   xmlns:wfs="http://www.opengis.net/wfs"
>
>   xmlns:ogc="http://www.opengis.net/ogc"
>
>   xmlns:gml="http://www.opengis.net/gml"
>
>   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 typeName="topp:states">
>
>     <wfs:PropertyName>topp:STATE_NAME</wfs:PropertyName>
>
>     <wfs:PropertyName>topp:PERSONS</wfs:PropertyName>
>
>     <ogc:Filter>
>
>       <ogc:BBOX>
>
>         <ogc:PropertyName>the_geom</ogc:PropertyName>
>
>         <gml:Envelope 
> srsName="http://www.opengis.net/gml/srs/epsg.xml#4326">
>
>            <gml:lowerCorner>-75.102613 40.212597</gml:lowerCorner>
>
>            <gml:upperCorner>-72.361859 41.512517</gml:upperCorner>
>
>         </gml:Envelope>
>
>       </ogc:BBOX>
>
>    </ogc:Filter>
>
>   </wfs:Query>
>
> </wfs:GetFeature>
>
>  
>
> But when I use openlayers, how to request thses requests exactly?
>
> For instance, when I request GetFeatureInfo with openlayers.
>
> // support GetFeatureInfo
>
>             map.events.register('click', map, function (e) {
>
>                 document.getElementById('nodelist').innerHTML = 
> "Loading... please wait...";
>
>                 var url =  map.layers[0].getFullRequestString(
>
>                     {
>
>                         REQUEST: "GetFeatureInfo",
>
>                         EXCEPTIONS: "application/vnd.ogc.se_xml",
>
>                         BBOX: map.getExtent().toBBOX(),
>
>                         X: e.xy.x,
>
>                         Y: e.xy.y,
>
>                         INFO_FORMAT: 'text/html',
>
>                         QUERY_LAYERS: map.layers[0].params.LAYERS,
>
>                         FEATURE_COUNT: 50,
>
>                         WIDTH: map.size.w,
>
>                         HEIGHT: map.size.h
>
>                     },
>
>                     "http://localhost:8888/geoserver/wms"
>
>                 );
>
>                 OpenLayers.loadURL(url, '', this, setHTML, setHTML);
>
>                 OpenLayers.Event.stop(e);
>
>             });
>
>         }
>
>  
>
>  
>
> Please, give me a piece of information.
>
>  
>
> Best regards,
>
> Myeonghun Jeong.
>
>  
>
>  
>