/// <summary>
/// This is where actual source-specific geocoding happens. It is called internal because
/// clients use <code>Geocode</code> which sandwiches this call between pre- and post-processing.
/// </summary>
/// <param name="geocodeRequest">The request to be geocoded.</param>
/// <returns>A <code>GeocodeResponse</code> describing the results of the geocode.</returns>
protected override GeocodeResponse InternalGeocode(GeocodeRequest geocodeRequest)
{
const string baseGoogleGeocodeUrl = @"https://maps.googleapis.com/maps/api/geocode/xml";
// For the address, either use the address field or the text string,
// depending on which one has a value. Then, add each following address
// part, one by one, if it has a value.
string address =
(!String.IsNullOrEmpty(geocodeRequest.TextString) ? geocodeRequest.TextString : geocodeRequest.Address) +
(!String.IsNullOrEmpty(geocodeRequest.City) ? (", " + geocodeRequest.City) : "") +
(!String.IsNullOrEmpty(geocodeRequest.State) ? (", " + geocodeRequest.State) : "") +
(!String.IsNullOrEmpty(geocodeRequest.PostalCode) ? (" " + geocodeRequest.PostalCode) : "") +
(!String.IsNullOrEmpty(geocodeRequest.Country) ? (", " + geocodeRequest.Country) : "");
// add oe=utf-8 here for returning valid utf-8, not iso-8859-1
string googleGeocodeUrl = baseGoogleGeocodeUrl +
"?address=" + HttpUtility.UrlEncode(address) +
"&sensor=false" +
"&key=" + _authKey;
string response = InternetSourceUtil.GetRawHTMLFromURL(googleGeocodeUrl);
var responseList = XMLList2GeocodeCandidates(response);
return(new GeocodeResponse(responseList, this));
}
/// <summary>
/// This is where actual source-specific geocoding happens. It is called internal because
/// clients use <code>Geocode</code> which sandwiches this call between pre- and post-processing.
/// </summary>
/// <param name="request">The request to be geocoded.</param>
/// <returns>A <code>GeocodeResponse</code> describing the results of the geocode.</returns>
protected override GeocodeResponse InternalGeocode(GeocodeRequest request)
{
string geocodeURL;
if (_username.Length > 0) //authenticated access
{
geocodeURL = "http://" + _username + ":" + _password + "@geocoder.us/member/service/namedcsv/geocode?address=";
}
else //non-authenticated access
{
geocodeURL = "http://geocoder.us/service/namedcsv/geocode?address=";
}
string queryString;
if (!string.IsNullOrEmpty(request.TextString))
{
queryString = request.TextString;
}
else
{
queryString = request.Address + ", " +
request.City + ", " + request.State + " " +
request.PostalCode + ", " + request.Country;
}
//Geocoder US doesn't understand '&'
queryString = queryString.Replace("&", " and ");
queryString = HttpUtility.UrlEncode(queryString);
string response = InternetSourceUtil.GetRawTextFromURL(geocodeURL + queryString);
IList <GeocodeCandidate> responseList = CSVList2GeocodeCandidates(response);
return(new GeocodeResponse(responseList, this));
}
