Re: [Gwt-openlayers-users] WFS layers with GWT-OpenLayers

[Jon B. <jon...@go...>]

Hi Alex,

Thanks for the response, that seems to work! Just out of curiosity, is there
a way of displaying a WFS layer without specifying its namespace - with just
a url and a layer name?

Thanks,

Jon

On 20 April 2011 13:36, Alexandre Ascasibar Sequeiros <aas...@gm...>wrote:

> You're missing a CallBack object to populate all the features retrieved
> from geoserver in the layer and a proxy to get data from the server in
> Javascript.
> Have a look to my code, it works for me.
>
>
>  OpenLayers.setProxyHost("gwtOpenLayersProxy?targetURL=");
>
>                   VectorOptions vectorOptions =  new VectorOptions();
>                   Vector eventsLayer = new Vector("Events", vectorOptions);
>
>                    WFSProtocolOptions wfsProtocolOptions = new
> WFSProtocolOptions("http://your-host/geoserver/ows","your-namespace",
> "your-wfs-layer");
>                    wfsProtocolOptions.setGeometryName(your-geometry-field);
>                    wfsProtocolOptions.setSrsName("EPSG:4326");
>                    wfsProtocolOptions.setVersion("1.1.0");
>
>
>                    WFSProtocol wfsProtocol = new
> WFSProtocol(wfsProtocolOptions);
>                    // WFS Protocol is asynchronous, so we need to use a
> callback
>                    Callback callback = new Callback() {
>                            public void computeResponse(Response response) {
>                                try
>                                {
>                                        VectorFeature[] features =
> response.getFeatures();
>                                        for ( VectorFeature feature :
> features ) {
>                                                        //Apply style
> depending on any attribute of you feature
>                                                        Style style = new
> Style();
>
>  style.setPointRadius(5);
>
>  style.setFillColor("#00FF00");
>
>  feature.setStyle(style);
>                                                }
>                                        eventsLayer.addFeatures(features);
>
>                                }
>                                catch (Exception ex)
>                                {
>                                        //ERROR
>                                }
>                                }
>                        };
>                        WFSProtocolCRUDOptions options = new
> WFSProtocolCRUDOptions(callback);
>                        wfsProtocol.read(options);
>
>
> Hope it helps,
> Alex.
> ________________________________________
> De: Jon Britton [jon...@go...]
> Enviado el: miércoles, 20 de abril de 2011 13:12
> Para: gwt-openlayers-users
> Asunto: [Gwt-openlayers-users] WFS layers with GWT-OpenLayers
>
> Hi,
>
> I'm trying to add a WFS layer to my map but it's not displaying. Here is my
> code:
>
>
> WFSProtocolOptions  wfsProtocolOptions = new WFSProtocolOptions();
> wfsProtocolOptions.setUrl(featureType.getServiceUrl());
> wfsProtocolOptions.setFeatureType(featureType.getName());
> WFSProtocol wfsProtocol = new WFSProtocol(wfsProtocolOptions);
> VectorOptions vectorOptions =  new VectorOptions();
> vectorOptions.setProtocol(wfsProtocol);
> vectorOptions.setStrategies(new Strategy[]{new BBoxStrategy()});
>
> mapLayer = new Vector(featureType.getName(), vectorOptions);
>
> SmartWPS.getSmartWPS().getMap().addLayer(mapLayer);
>
>
> Where the url is "http://li199-25.members.linode.com:8080/geoserver/wfs"
> and the layer name is "topp:tasmania_roads".  I got this code from the
> showcase so I assumed it was all I needed.
>
> Am I missing something? BTW the WFS is public if anybody wants to try it
> out :-)
>
> Thanks,
>
> Jon
>
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