[OpenLayers-Users] Re: Get Features from a WMS Layer

IvanBell Ivan.Bell at CCA.com
Mon May 23 23:49:24 EDT 2011


One final thing before I sleep.  The following query (typed directly into the
browser) returns the layer's features:




http://localhost:8081/geoserver/wfs?service=wfs&version=1.1.0&request=GetFeature&typeName=MyMap:MyLayer



Executing the query above returns the following:




<wfs:FeatureCollection numberOfFeatures="22"
timeStamp="2011-05-23T23:26:16.950-04:00"
xsi:schemaLocation="http://localhost:8081/MyMap
http://localhost:8081/geoserver/wfs?service=WFS&version=1.1.0&request=DescribeFeatureType&typeName=MyMap%3AMyLayer
http://www.opengis.net/wfs
http://localhost:8081/geoserver/schemas/wfs/1.1.0/wfs.xsd">
   <gml:featureMembers>
      <MyMap:MyLayer gml:id="MyLayer.1">
         <MyMap:the_geom>
            <gml:MultiSurface srsDimension="2"
srsName="urn:x-ogc:def:crs:EPSG:68156405">
               <gml:surfaceMember>
                  <gml:Polygon>
                     <gml:exterior>
                        <gml:LinearRing>
                           <gml:posList>3492.0015869140625
-3363.049072265625 2556.0007934570312 -3363.0496215820312 2566.0004272460938
-4540.960388183594 1848.4064331054688 -4534.499755859375 1848.4064331054688
-5648.319641113281 2556.0016479492188 -5648.319641113281 2556.0016479492188
-6855.0450439453125 3478.28564453125 -6845.04638671875 3492.0015869140625
-6846.075744628906 3503.0972900390625 -5607.562316894531 4951.1680908203125
-5596.262756347656 4938.001708984375 -4642.6566162109375 3512.1845703125
-4641.047546386719 3492.0015869140625 -3363.049072265625</gml:posList>
                        </gml:LinearRing><
                     /gml:exterior>
                  </gml:Polygon>
               </gml:surfaceMember>
            </gml:MultiSurface>
         </MyMap:the_geom>
         <MyMap:Id>2</MyMap:Id>
      </MyMap:MyLayer>
   <MyMap:MyLayer gml:id="MyLayer.2">
      <MyMap:the_geom>
         <gml:MultiSurface srsDimension="2"
srsName="urn:x-ogc:def:crs:EPSG:68156405">
            <gml:surfaceMember>
               <gml:Polygon>
                  <gml:exterior>
                     <gml:LinearRing>
                        <gml:posList>
                           3522.3305053710938 1036.248291015625
2586.3297119140625 1036.2476806640625 2596.3291015625 -141.6632080078125
1878.7352905273438 -135.20257568359375 1878.7352905273438
-1249.0225830078125 2586.330322265625 -1249.0225830078125 2586.330322265625
-2455.747802734375 3508.6143188476562 -2445.7493286132812 3522.3305053710938
-2446.7785034179688 3533.4263305664062 -1208.2650756835938 4981.4970703125
-1196.965576171875 4968.330505371094 -243.359375 3542.5133056640625
-241.75048828125 3522.3305053710938 1036.248291015625</gml:posList>
                        </gml:LinearRing>
                     </gml:exterior>
                  </gml:Polygon>
               </gml:surfaceMember>
            </gml:MultiSurface>
         </MyMap:the_geom>
         <MyMap:Id>2</MyMap:Id>
      </MyMap:MyLayer>
   <MyMap:MyLayer gml:id="MyLayer.3">
      <MyMap:the_geom>
         <gml:MultiSurface srsDimension="2"
srsName="urn:x-ogc:def:crs:EPSG:68156405">
            <gml:surfaceMember>
               <gml:Polygon>
                  <gml:exterior>
                     <gml:LinearRing>
                        <gml:posList>
                           -734.0172119140625 5564.245300292969
-2226.5150146484375 5537.9622802734375 -2226.0020751953125 4616.246276855469
-749.6724853515625 4581.516906738281 -749.6724853515625 3374.7916870117188
-557.3804931640625 3364.8572998046875 140.07470703125 3363.828125
151.17047119140625 4473.9202880859375 915.5023193359375 4485.219909667969
902.335693359375 5642.824890136719 168.80548095703125 5643.652526855469
149.22967529296875 6830.244079589844 -543.664306640625 6846.854919433594
-733.727294921875 6869.757080078125 -734.0172119140625
5564.245300292969</gml:posList>
                        </gml:LinearRing>
                     </gml:exterior>
                  </gml:Polygon>
               </gml:surfaceMember>
            </gml:MultiSurface>
         </MyMap:the_geom>
         <MyMap:Id>2</MyMap:Id>
      </MyMap:MyLayer>
   </gml:featureMembers>
</wfs:FeatureCollection>



So, executing the query directly to the map server (i.e., GeoServer) works. 
What is the equivalent "new OpenLayers.Layer.Vector" call and the
corresponding "featureType" and "featureNS"?



-----
Up the Irons!!!
--
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