/// <summary>
/// Retrieves the reuqest URL for the query.
/// </summary>
/// <returns>A string URL for the query.</returns>
public override string GetRequestUrl()
{
string spatialFilter;
double disKm = SpatialTools.ConvertDistance(Distance, DistanceUnits, DistanceUnitType.Kilometers);
if (disKm < 0.16)
{
disKm = 0.16;
}
if (disKm > 1000)
{
disKm = 1000;
}
if (Center != null)
{
spatialFilter = string.Format(CultureInfo.InvariantCulture, "?spatialFilter=nearby({0:0.#####},{1:0.#####},{2})", Center.Latitude, Center.Longitude, disKm);
}
else if (!string.IsNullOrWhiteSpace(Address))
{
spatialFilter = string.Format(CultureInfo.InvariantCulture, "?spatialFilter=nearby('{0}',{1})", Uri.EscapeDataString(Address), disKm);
}
else
{
throw new Exception("Location to search nearby is not specified.");
}
return(string.Format(base.GetBaseRequestUrl(), spatialFilter));
}
private static async Task <QueryResponse> MakeRequest(FindByPropertyRequest request)
{
var result = new QueryResponse();
try
{
string urlRequest = request.GetRequestUrl();
using (var responseStream = await ServiceHelper.GetStreamAsync(new Uri(urlRequest)))
{
XDocument xmlDoc = XDocument.Load(responseStream);
string name;
foreach (XElement element in xmlDoc.Descendants(XmlNamespaces.Atom + "entry"))
{
var r = new QueryResult()
{
EntityUrl = element.Element(XmlNamespaces.Atom + "id").Value,
Location = new GeodataLocation()
};
XElement content = element.Element(XmlNamespaces.Atom + "content");
if (content != null && content.FirstNode != null)
{
XElement properties = (XElement)content.FirstNode;//.Element(XmlNamespaces.m + "properties");
if (properties != null)
{
foreach (var prop in properties.Descendants())
{
name = prop.Name.LocalName;
switch (name.ToLowerInvariant())
{
case "latitude":
r.Location.Latitude = XmlUtilities.GetDouble(prop, 0);
break;
case "longitude":
r.Location.Longitude = XmlUtilities.GetDouble(prop, 0);
break;
case "__distance":
r.Distance = SpatialTools.ConvertDistance(XmlUtilities.GetDouble(prop, 0), DistanceUnitType.Kilometers, request.DistanceUnits);
break;
case "__IntersectedGeom":
var wkt = XmlUtilities.GetString(prop);
if (!string.IsNullOrEmpty(wkt))
{
r.IntersectedGeography = new Geography()
{
WellKnownText = wkt
};
}
break;
default:
if (!r.Properties.ContainsKey(name))
{
var nVal = ParseNodeValue(prop);
r.Properties.Add(name, nVal);
if (nVal is Geography)
{
r.HasGeography = true;
}
}
break;
}
}
}
}
result.Results.Add(r);
}
}
}
catch (Exception ex)
{
result.ErrorMessage = ex.Message;
}
return(result);
}
