[OpenLayers-Users] Vector layer returns entire data set

[Bartłomiej Burkot]

Hi Rohan

1) include the Singapore’s projection proj4js definition :

	<script  src="proj4js/lib/proj4js.js  <view-source:http://mapakrakow.pl/%7Ebbarni/mk4/proj4js/lib/proj4js.js>"></script>
	<script  src="proj4js/lib/defs/EPSG3414.js  <view-source:http://mapakrakow.pl/%7Ebbarni/mk4/proj4js/lib/defs/EPSG2180.js>"></script>

2) Configure proxy server:
	OpenLayers.ProxyHost = "/cgi-bin/proxy.cgi?url=";
	
(geoserver work on port 8080)

3) featureNS - it should be the same URL you provided to GeoServer when you created the namespace.
4) check your stylemap object
5) don't use the namespace prefix in the featuretype.
(http://comments.gmane.org/gmane.comp.gis.openlayers.user/12319)
			{
				url:  "/MyApp/Proxy.ashx",
				featureType: "boundary",
				featurePrefix: "mystore",
				version: "1.1.0"
			})
	

6) use:

srsName: "EPSG:3414",

in Your protocol: new OpenLayers.Protocol.WFS

7) try to add: featurePrefix: and schema: parameters to OpenLayers.Protocol.WFS

BR

Bartek
						

> I have a layer showing buildings in Singapore. I have it set up as a 
> WMS layer, but as I wanted to learn more about vector layers,  am 
> trying to add the same data as a vector layer just as an experiment.
>
> At the initial zoom level, there are about 20 simple polygons, which 
> shouldn’t be too large for the map.
>
> However, the vector version of the layer is very slow to load, and 
> when I checked Fiddler and Firebug, found that is returning almost 3MB 
> of data. Checking the node count in the results against the database 
> confirmed that it’s returning the entire layer.
>
> The code for the vector layer was mostly taken from the OL demo pages. 
> (I found I had to add the geometryName parameter.)
>
> var lyrBuildingsVector = new OpenLayers.Layer.Vector("Buildings Vec", {
>
>         styleMap: ocStyleMap,
>
>         strategies: [new OpenLayers.Strategy.BBOX()],
>
>         protocol: new OpenLayers.Protocol.WFS({
>
>             url:  GeoServerWFSAddress,
>
>             featureType: "building_3414",
>
>             featureNS:"_http://mynamespace/demo_",
>
>             geometryName: 'geom_3414'
>
>         })
>
>     });
>
> //Singapore’s projection:
>
> var options = {projection: 'EPSG:3414',
>
>                 displayProjection: 'EPSG:4326',
>
> numZoomLevels: 10,
>
>                 maxExtent: new OpenLayers.Bounds(0, 14482.03459, 
> 54313.2955286349, 60381.0195956435),
>
>                 units: 'm'
>
> }
>
> This is the  base layer:
>
> var ags_map_service = new OpenLayers.Layer.ArcGIS93Rest(
>
> "SNG",
>
> SNG_Server,
>
>                 {
>
>                     LAYERS: 'all:0',
>
>                     IMAGESR: '3414',
>
>                     BBOXSR: '3414',
>
>                     FORMAT: 'jpg',
>
>                     TRANSPARENT: false
>
>                 },
>
>                 {
>
>                     maxExtent: new OpenLayers.Bounds(0, 14482.03459, 
> 54313.2955286349, 60381.0195956435),
>
>                     units:'m',
>
>                     maxScale: 255104,
>
>                     minScale: 498,
>
>                     projection: proSNG,
>
>                     buffer: 1
>
>                 }
>
>             );
>
> The data is in a PostGIS database and runs on GeoServer. However, I 
> was using SHP files previously, and had the same problem.
>
> *Rohan Parkes*
>
>
> _______________________________________________
> Users mailing list
> Users at openlayers.org
> http://openlayers.org/mailman/listinfo/users
>    

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.osgeo.org/pipermail/openlayers-users/attachments/20100730/a36dccbf/attachment.html