async protected override Task <IFeatureCursor> FeatureCursor(IQueryFilter filter)
{
string response = "";
string srsName = _sRef != null ? _sRef.Name : String.Empty;
if (filter is ISpatialFilter)
{
filter = SpatialFilter.Project(filter as ISpatialFilter, this.SpatialReference);
((ISpatialFilter)filter).FilterSpatialReference = this.SpatialReference;
}
if (_dataset._getCapabilities.Post_OnlineResource == String.Empty &&
_dataset._getCapabilities.Get_OnlineResource != String.Empty)
{
string param = "VERSION=1.0.0&REQUEST=GetFeature&TYPENAME=" + this.Name + "&MAXFEATURES=10&FILTER=";
if (_dataset._getCapabilities.Get_OnlineResource.IndexOf("&SERVICE=") == -1 &&
_dataset._getCapabilities.Get_OnlineResource.IndexOf("?SERVICE=") == -1)
{
param = "SERVICE=WFS&" + param;
}
string wfsFilter = await Filter.ToWFS(this, filter, _dataset._filter_capabilites, _dataset._gmlVersion);
string url = _dataset._getFeature.Get_OnlineResource;
response = WebFunctions.HttpSendRequest(url, "GET", null);
}
else if (_dataset._getCapabilities.Post_OnlineResource != String.Empty)
{
string url = _dataset._getFeature.Post_OnlineResource;
if (_dataset._getCapabilities.Get_OnlineResource.IndexOf("&SERVICE=") == -1 &&
_dataset._getCapabilities.Get_OnlineResource.IndexOf("?SERVICE=") == -1)
{
url = WMSDataset.Append2Url(url, "SERVICE=WFS");
}
string wfsFilter = GetFeatureRequest.Create(this, this.Name, filter, srsName, _dataset._filter_capabilites, _dataset._gmlVersion);
response = WebFunctions.HttpSendRequest(url, "POST",
Encoding.UTF8.GetBytes(wfsFilter));
}
if (response == String.Empty)
{
return(null);
}
try
{
StringReader stringReader = new StringReader(response);
XmlTextReader xmlReader = new XmlTextReader(stringReader);
XmlDocument doc = new XmlDocument();
//doc.LoadXml(response);
XmlNamespaceManager ns = new XmlNamespaceManager(doc.NameTable);
ns.AddNamespace("GML", "http://www.opengis.net/gml");
ns.AddNamespace("WFS", "http://www.opengis.net/wfs");
ns.AddNamespace("OGC", "http://www.opengis.net/ogc");
ns.AddNamespace("myns", _targetNamespace);
//XmlNode featureCollection = doc.SelectSingleNode("WFS:FeatureCollection", ns);
//if (featureCollection == null)
// featureCollection = doc.SelectSingleNode("GML:FeatureCollection", ns);
//if (featureCollection == null) return null;
return(new gView.Framework.OGC.GML.FeatureCursor2(this, xmlReader, ns, filter, _dataset._gmlVersion, _dataset._filter_capabilites));
}
catch { }
return(null);
}
