public async Task <ActionResult> GetFeatureInfo(string serviceName, string layer, string style, string tileMatrixSet, string tileMatrix, int tileRow, int tileCol, int j, int i)
{
GetTile getTile = new GetTile()
{
service = "WMTS",
version = "1.0.0",
Layer = layer,
Style = style,
TileMatrixSet = tileMatrixSet,
TileMatrix = tileMatrix,
TileRow = tileRow,
TileCol = tileCol
};
string infoFormat = "application/xml";
GetFeatureInfo getFeatureInfo = new GetFeatureInfo()
{
service = "WMTS",
version = "1.0.0",
I = i,
J = j,
GetTile = getTile,
InfoFormat = infoFormat
};
var result = await GetFeatureInfo(serviceName, getFeatureInfo);
return(result);
}
static HardwareCapabilities()
{
EmitterContext context = new EmitterContext();
Operand featureInfo = context.CpuId();
context.Return(featureInfo);
ControlFlowGraph cfg = context.GetControlFlowGraph();
OperandType[] argTypes = new OperandType[0];
GetFeatureInfo getFeatureInfo = Compiler.Compile <GetFeatureInfo>(
cfg,
argTypes,
OperandType.I64,
CompilerOptions.HighCq);
_featureInfo = getFeatureInfo();
}
public async Task <JsonResult> Post([FromBody] GetFeatureInfo info)
{
string result = "";
// Create the web request
System.Net.HttpWebRequest request = (System.Net.HttpWebRequest)System.Net.WebRequest.Create(info.address);
// Get response
try
{
using (System.Net.HttpWebResponse response = (System.Net.HttpWebResponse)request.GetResponse())
{
// Get the response stream
System.IO.StreamReader reader = new System.IO.StreamReader(response.GetResponseStream(), System.Text.Encoding.GetEncoding("ISO-8859-1"));
// Read the whole contents and return as a string
result = reader.ReadToEnd();
return(Json(result));
}
}
catch
{
//using (var client = new System.Net.Http.HttpClient())
//{
// client.BaseAddress = new System.Uri(info.address);
// client.DefaultRequestHeaders.Accept.Clear();
// client.DefaultRequestHeaders.Accept.Add(new System.Net.Http.Headers.MediaTypeWithQualityHeaderValue("application/json"));
// System.Net.Http.HttpResponseMessage response = await client.GetAsync(info.address);
// if (response.IsSuccessStatusCode)
// {
// string responseString = response.Content.ReadAsStringAsync().Result;
// return Json(Newtonsoft.Json.JsonConvert.DeserializeObject<dynamic>(responseString));
// }
//}
return(Json(result));
}
}
private async Task <ContentResult> GetFeatureInfo(string serviceName, GetFeatureInfo getFeatureInfo)
{
GetTile getTile = getFeatureInfo.GetTile;
string content = null;
ExceptionReport exception = null;
int statusCode = 200;
#region Validate parameters
if (string.IsNullOrWhiteSpace(serviceName))
{
exception = ExceptionReportHelper.GetExceptionReport("MissingParameterValue", "serviceName", exceptionText: "Bad request");
statusCode = 400;
goto Exception;
}
string serviceType = getTile.service;
if (string.IsNullOrWhiteSpace(serviceType))
{
exception = ExceptionReportHelper.GetExceptionReport("MissingParameterValue", "service", exceptionText: "Bad request");
statusCode = 400;
goto Exception;
}
if (serviceType != "wmts")
{
exception = ExceptionReportHelper.GetExceptionReport("InvalidParameterValue", "version", exceptionText: "Bad request");
statusCode = 400;
goto Exception;
}
string version = getTile.version;
if (string.IsNullOrWhiteSpace(version))
{
exception = ExceptionReportHelper.GetExceptionReport("MissingParameterValue", "version", exceptionText: "Bad request");
statusCode = 400;
goto Exception;
}
if (version != "1.0.0")
{
exception = ExceptionReportHelper.GetExceptionReport("InvalidParameterValue", "version", exceptionText: "Bad request");
statusCode = 400;
goto Exception;
}
string layerName = getTile.Layer;
if (string.IsNullOrWhiteSpace(layerName))
{
exception = ExceptionReportHelper.GetExceptionReport("MissingParameterValue", "layer", exceptionText: "Bad request");
statusCode = 400;
goto Exception;
}
string style = getTile.Style;
if (string.IsNullOrWhiteSpace(style))
{
exception = ExceptionReportHelper.GetExceptionReport("MissingParameterValue", "style", exceptionText: "Bad request");
statusCode = 400;
goto Exception;
}
string format = getTile.Format;
if (string.IsNullOrWhiteSpace(format))
{
exception = ExceptionReportHelper.GetExceptionReport("MissingParameterValue", "format", exceptionText: "Bad request");
statusCode = 400;
goto Exception;
}
string tileMatrixSet = getTile.TileMatrixSet;
if (string.IsNullOrWhiteSpace(tileMatrixSet))
{
exception = ExceptionReportHelper.GetExceptionReport("MissingParameterValue", "tileMatrixSet", exceptionText: "Bad request");
statusCode = 400;
goto Exception;
}
string tileMatrix = getTile.TileMatrix;
if (string.IsNullOrWhiteSpace(tileMatrix))
{
exception = ExceptionReportHelper.GetExceptionReport("MissingParameterValue", "tileMatrix", exceptionText: "Bad request");
statusCode = 400;
goto Exception;
}
ServiceRecord serviceRecord = await GetServiceRecord(serviceName, version);
if (serviceRecord == null)
{
exception = ExceptionReportHelper.GetExceptionReport("InvalidParameterValue", exceptionText: "Bad request");
statusCode = 400;
goto Exception;
}
if (!System.IO.File.Exists(serviceRecord.Path))
{
exception = ExceptionReportHelper.GetExceptionReport("NoApplicableCode", exceptionText: "Internal server error");
statusCode = 500;
goto Exception;
}
LayerRecord layerRecord = await GetLayerRecord(serviceRecord, layerName);
if (layerRecord == null)
{
exception = ExceptionReportHelper.GetExceptionReport("InvalidParameterValue", exceptionText: "Bad request");
statusCode = 400;
goto Exception;
}
if (!System.IO.File.Exists(layerRecord.Path))
{
exception = ExceptionReportHelper.GetExceptionReport("NoApplicableCode", exceptionText: "Internal server error");
statusCode = 500;
goto Exception;
}
#endregion
GetCapabilities getCapabilities = new GetCapabilities();
IWmtsService wmts1Service = GetWmts1Service(version);
Capabilities capabilities = wmts1Service.GetCapabilities(serviceRecord.Path, getCapabilities);
if (capabilities == null)
{
exception = ExceptionReportHelper.GetExceptionReport("NoApplicableCode", exceptionText: "Internal server error");
statusCode = 500;
goto Exception;
}
LayerType layerType = capabilities.Contents?.DatasetDescriptionSummary?.FirstOrDefault(x => x.Identifier?.Value == layerName && x is LayerType) as LayerType;
if (layerType == null)
{
exception = ExceptionReportHelper.GetExceptionReport("NoApplicableCode", exceptionText: "Internal server error");
statusCode = 500;
goto Exception;
}
if (!layerType.Format.Contains(format))
{
exception = ExceptionReportHelper.GetExceptionReport("InvalidParameterValue", "format", exceptionText: "Bad request");
statusCode = 400;
goto Exception;
}
if (layerType.TileMatrixSetLink == null || layerType.TileMatrixSetLink.Length == 0)
{
exception = ExceptionReportHelper.GetExceptionReport("NoApplicableCode", exceptionText: "Internal server error");
statusCode = 500;
goto Exception;
}
string layerTileMatrixSetStr = layerType.TileMatrixSetLink[0].TileMatrixSet;
if (layerTileMatrixSetStr != null)
{
TileMatrixSet layerTileMatrixSet = capabilities.Contents.TileMatrixSet?.FirstOrDefault(x => x.Identifier?.Value == layerTileMatrixSetStr);
if (layerTileMatrixSet != null)
{
TileMatrix layerTileMatrix = layerTileMatrixSet.TileMatrix?.FirstOrDefault(x => x.Identifier.Value == getTile.TileMatrix);
if (layerTileMatrix != null)
{
bool ret = layerTileMatrix.TopLeftCorner.ToPosition(out double left, out double top);
if (!ret)
{
exception = ExceptionReportHelper.GetExceptionReport("NoApplicableCode", exceptionText: "Internal server error");
statusCode = 500;
goto Exception;
}
BoundingBoxType boundingBoxType = layerType.BoundingBox?.Length > 0 ? layerType.BoundingBox[0] : layerType.WGS84BoundingBox?.Length > 0 ? layerType.WGS84BoundingBox[0] : null;
if (boundingBoxType == null)
{
exception = ExceptionReportHelper.GetExceptionReport("NoApplicableCode", exceptionText: "Internal server error");
statusCode = 500;
goto Exception;
}
bool ret1 = boundingBoxType.LowerCorner.ToPosition(out double xMin, out double yMin);
bool ret2 = boundingBoxType.UpperCorner.ToPosition(out double xMax, out double yMax);
if (!ret1 || !ret2)
{
exception = ExceptionReportHelper.GetExceptionReport("NoApplicableCode", exceptionText: "Internal server error");
statusCode = 500;
goto Exception;
}
double tileXMin = 0, tileYMin = 0, tileXMax = 0, tileYMax = 0;
int tileWidth = Convert.ToInt32(layerTileMatrix.TileWidth);
int tileHeight = Convert.ToInt32(layerTileMatrix.TileHeight);
tileXMin = left + getTile.TileCol * tileWidth * layerTileMatrix.ScaleDenominator;
tileXMax = left + (getTile.TileCol + 1) * tileWidth * layerTileMatrix.ScaleDenominator;
tileYMax = top - getTile.TileRow * tileHeight * layerTileMatrix.ScaleDenominator;
tileYMin = top - (getTile.TileRow + 1) * tileHeight * layerTileMatrix.ScaleDenominator;
if (tileXMax <= xMin || tileXMin >= xMax || tileYMax <= yMin || tileYMin >= yMax)
{
exception = ExceptionReportHelper.GetExceptionReport("TileOutOfRange", exceptionText: "Bad request");
statusCode = 400;
goto Exception;
}
if (getFeatureInfo.I < 0 || getFeatureInfo.I >= tileWidth || getFeatureInfo.J < 0 || getFeatureInfo.J >= tileHeight)
{
exception = ExceptionReportHelper.GetExceptionReport("PointIJOutOfRange", exceptionText: "Bad request");
statusCode = 400;
goto Exception;
}
}
}
}
FeatureInfoResponse featureInfoResponse = wmts1Service.GetFeatureInfo(serviceRecord.Path, getFeatureInfo);
content = XmlHelper.XmlSerialize(featureInfoResponse, Encoding, null);
goto Success;
Exception:
content = XmlHelper.XmlSerialize(exception, Encoding, null);
Success:
ContentResult result = new ContentResult()
{
StatusCode = statusCode,
Content = content
};
return(result);
}
internal void Init(string CapabilitiesString, WFSDataset wfsDataset)
{
try
{
_themes = new List <IWebServiceTheme>();
XmlDocument doc = new XmlDocument();
doc.LoadXml(CapabilitiesString);
XmlNode CapabilitiesNode = doc.SelectSingleNode("WMT_MS_Capabilities/Capability");
_getCapabilities = new GetCapabilities(CapabilitiesNode.SelectSingleNode("Request/GetCapabilities"));
_getMap = new GetMap(CapabilitiesNode.SelectSingleNode("Request/GetMap"));
_getFeatureInfo = new GetFeatureInfo(CapabilitiesNode.SelectSingleNode("Request/GetFeatureInfo"));
_describeLayer = new DescribeLayer(CapabilitiesNode.SelectSingleNode("Request/DescribeLayer"));
_getLegendGraphic = new GetLegendGraphic(CapabilitiesNode.SelectSingleNode("Request/GetLegendGraphic"));
_getStyles = new GetStyles(CapabilitiesNode.SelectSingleNode("Request/GetStyles"));
_exceptions = new WMSExceptions(CapabilitiesNode.SelectSingleNode("Exception"));
_userDefinedSymbolization = new UserDefinedSymbolization(CapabilitiesNode.SelectSingleNode("UserDefinedSymbolization"));
XmlNode service = CapabilitiesNode.SelectSingleNode("Layer");
XmlNode title = service.SelectSingleNode("Title");
if (title != null)
{
_name = title.InnerText;
}
_srs = new SRS(service);
this.SRSCode = _srs.Srs[_srs.SRSIndex];
foreach (XmlNode layer in service.SelectNodes("Layer"))
{
string name = "", Title = "";
XmlNode nameNode = layer.SelectSingleNode("Name");
XmlNode titleNode = layer.SelectSingleNode("Title");
if (nameNode == null)
{
continue;
}
name = Title = nameNode.InnerText;
if (titleNode != null)
{
Title = titleNode.InnerText;
}
XmlNodeList styles = layer.SelectNodes("Style");
WFSFeatureClass wfsFc = null;
if (wfsDataset != null)
{
IDatasetElement wfsElement = wfsDataset[name];
if (wfsElement != null && wfsElement.Class is WFSFeatureClass)
{
wfsFc = wfsElement.Class as WFSFeatureClass;
}
}
if (styles.Count == 0)
{
IClass wClass = null;
if (wfsFc != null)
{
wClass = wfsFc;
}
else if (layer.Attributes["queryable"] != null && layer.Attributes["queryable"].Value == "1")
{
wClass = new WMSQueryableThemeClass(_dataset, name, String.Empty, layer, _getFeatureInfo, _srs, _exceptions);
}
else
{
wClass = new WMSThemeClass(_dataset, name, String.Empty, layer);
}
IWebServiceTheme theme;
if (wClass is WFSFeatureClass)
{
theme = new WebServiceTheme2(
wClass, Title, name, true, this);
}
else
{
theme = new WebServiceTheme(
wClass, Title, name, true, this
);
}
_themes.Add(theme);
}
else
{
foreach (XmlNode style in styles)
{
string sName = "", sTitle = "";
XmlNode sNameNode = style.SelectSingleNode("Name");
XmlNode sTitleNode = style.SelectSingleNode("Title");
if (sNameNode == null)
{
continue;
}
sName = sTitle = sNameNode.InnerText;
if (sTitleNode != null)
{
sTitle = sTitleNode.InnerText;
}
IClass wClass = null;
if (wfsFc is WFSFeatureClass)
{
wClass = wfsFc;
((WFSFeatureClass)wClass).Style = sName;
}
else if (layer.Attributes["queryable"] != null && layer.Attributes["queryable"].Value == "1")
{
wClass = new WMSQueryableThemeClass(_dataset, name, sName, layer, _getFeatureInfo, _srs, _exceptions);
}
else
{
wClass = new WMSThemeClass(_dataset, name, sName, layer);
}
IWebServiceTheme theme;
if (wClass is WFSFeatureClass)
{
theme = new WebServiceTheme2(
wClass, Title + " (Style=" + sTitle + ")", name, true, this);
}
else
{
theme = new WebServiceTheme(
wClass, Title + " (Style=" + sTitle + ")", name, true, this
);
}
_themes.Add(theme);
}
}
}
doc = null;
}
catch (Exception ex)
{
string errMsg = ex.Message;
}
}
public override FeatureInfoResponse GetFeatureInfo(Capabilities capabilities, string path, GetFeatureInfo getFeatureInfo)
{
FeatureInfoResponse featureInfoResponse = null;
if (capabilities == null || string.IsNullOrEmpty(path) || getFeatureInfo == null)
{
return(featureInfoResponse);
}
LayerFactory layerFactory = new LayerFactory();
#region 验证getTile参数
GetTile getTile = getFeatureInfo.GetTile;
LayerType layerType = capabilities.GetLayerType(getTile.Layer);
if (layerType == null)
{
return(featureInfoResponse);
}
TileMatrixSet tileMatrixSet = capabilities.GetTileMatrixSet(getTile.TileMatrixSet);
if (tileMatrixSet == null)
{
return(featureInfoResponse);
}
TileMatrix tileMatrix = tileMatrixSet.GetTileMatrix(getTile.TileMatrix);
if (tileMatrix == null)
{
return(featureInfoResponse);
}
BoundingBoxType boundingBoxType = layerType.BoundingBox.FirstOrDefault();
if (boundingBoxType == null)
{
return(featureInfoResponse);
}
bool ret = boundingBoxType.LowerCorner.ToPosition(out double xMin, out double yMin);
if (!ret)
{
return(featureInfoResponse);
}
ret = boundingBoxType.UpperCorner.ToPosition(out double xMax, out double yMax);
if (!ret)
{
return(featureInfoResponse);
}
bool isDegree = tileMatrixSet.GetIsDegreeByLocalDb();
tileMatrix.GetTileIndex(isDegree, xMin, yMax, out int startCol, out int startRow);
int matrixWidth = Convert.ToInt32(tileMatrix.MatrixWidth);
int matrixHeight = Convert.ToInt32(tileMatrix.MatrixHeight);
if (getTile.TileCol < startCol || getTile.TileCol >= startCol + matrixWidth || getTile.TileRow < startRow || getTile.TileRow >= startRow + matrixHeight)
{
return(featureInfoResponse);
}
if (!layerType.Style.Any(x => x.Identifier.Value == getTile.Style))
{
return(featureInfoResponse);
}
#endregion
#region 验证getFeatureInfo参数
int tileWidth = Convert.ToInt32(tileMatrix.TileWidth);
int tileHeight = Convert.ToInt32(tileMatrix.TileHeight);
if (getFeatureInfo.J < 0 || getFeatureInfo.J >= tileHeight || getFeatureInfo.I < 0 || getFeatureInfo.I >= tileWidth)
{
return(featureInfoResponse);
}
#endregion
using (var dataSource = LayerFactory.OpenDataSource(path))
{
if (dataSource == null)
{
return(featureInfoResponse);
}
using (var layer = dataSource.GetLayerByName(getTile.Layer))
{
if (layer == null)
{
return(featureInfoResponse);
}
tileMatrix.GetFeatureInfoBoundary(isDegree, getTile.TileRow, getTile.TileCol, getFeatureInfo.J, getFeatureInfo.I, out double ftInfoXMin, out double ftInfoYMin, out double ftInfoXMax, out double ftInfoYMax);
layer.SetSpatialFilterRect(ftInfoXMin, ftInfoYMin, ftInfoXMax, ftInfoYMax);
FeatureCollectionType featureCollectionType = new FeatureCollectionType();
featureInfoResponse = new FeatureInfoResponse()
{
Item = featureCollectionType
};
var ft = layer.GetNextFeature();
while (ft != null)
{
ft = layer.GetNextFeature();
//todo添加查询的feature
}
}
}
return(featureInfoResponse);
}
/// <summary>
/// Generates a WMS 1.3.0 compliant response based on a <see cref="SharpMap.Map"/> and the current HttpRequest.
/// </summary>
/// <remarks>
/// <para>
/// The Web Map Server implementation in SharpMap requires v1.3.0 compatible clients,
/// and support the basic operations "GetCapabilities" and "GetMap"
/// as required by the WMS v1.3.0 specification. SharpMap does not support the optional
/// GetFeatureInfo operation for querying.
/// </para>
/// <example>
/// Creating a WMS server in ASP.NET is very simple using the classes in the SharpMap.Web.Wms namespace.
/// <code lang="C#">
/// void page_load(object o, EventArgs e)
/// {
/// //Get the path of this page
/// string url = (Request.Url.Query.Length>0?Request.Url.AbsoluteUri.Replace(Request.Url.Query,""):Request.Url.AbsoluteUri);
/// SharpMap.Web.Wms.Capabilities.WmsServiceDescription description =
/// new SharpMap.Web.Wms.Capabilities.WmsServiceDescription("Acme Corp. Map Server", url);
///
/// // The following service descriptions below are not strictly required by the WMS specification.
///
/// // Narrative description and keywords providing additional information
/// description.Abstract = "Map Server maintained by Acme Corporation. Contact: [email protected].
/// High-quality maps showing roadrunner nests and possible ambush locations.";
/// description.Keywords.Add("bird");
/// description.Keywords.Add("roadrunner");
/// description.Keywords.Add("ambush");
///
/// //Contact information
/// description.ContactInformation.PersonPrimary.Person = "John Doe";
/// description.ContactInformation.PersonPrimary.Organisation = "Acme Inc";
/// description.ContactInformation.Address.AddressType = "postal";
/// description.ContactInformation.Address.Country = "Neverland";
/// description.ContactInformation.VoiceTelephone = "1-800-WE DO MAPS";
/// //Impose WMS constraints
/// description.MaxWidth = 1000; //Set image request size width
/// description.MaxHeight = 500; //Set image request size height
///
/// //Call method that sets up the map
/// //We just add a dummy-size, since the wms requests will set the image-size
/// SharpMap.Map myMap = MapHelper.InitializeMap(new System.Drawing.Size(1,1));
///
/// //Parse the request and create a response
/// SharpMap.Web.Wms.WmsServer.ParseQueryString(myMap,description);
/// }
/// </code>
/// </example>
/// </remarks>
/// <param name="map">Map to serve on WMS</param>
/// <param name="description">Description of map service</param>
///<param name="pixelSensitivity">Tolerance for GetFeatureInfo requests</param>
///<param name="intersectDelegate">Delegate for Getfeatureinfo intersecting, when null, the WMS will default to ICanQueryLayer implementation</param>
public static void ParseQueryString(Map map, Capabilities.WmsServiceDescription description, int pixelSensitivity, InterSectDelegate intersectDelegate)
{
_pixelSensitivity = pixelSensitivity;
_intersectDelegate = intersectDelegate;
if (map == null)
throw (new ArgumentException("Map for WMS is null"));
if (map.Layers.Count == 0)
throw (new ArgumentException("Map doesn't contain any layers for WMS service"));
if (HttpContext.Current == null)
throw new ApplicationException("An attempt was made to access the WMS server outside a valid HttpContext");
HttpContext context = HttpContext.Current;
//IgnoreCase value should be set according to the VERSION parameter
//v1.3.0 is case sensitive, but since it causes a lot of problems with several WMS clients, we ignore casing anyway.
const bool ignorecase = true;
//Collect parameters
string request = context.Request.Params["REQUEST"];
string version = context.Request.Params["VERSION"];
//Check for required parameters
//Request parameter is mandatory
if (request == null)
{
WmsException.ThrowWmsException("Required parameter REQUEST not specified");
return;
}
//Check if version is supported
if (version != null)
{
if (String.Compare(version, "1.3.0", ignorecase) != 0)
{
WmsException.ThrowWmsException("Only version 1.3.0 supported");
return;
}
}
else
{
//Version is mandatory if REQUEST!=GetCapabilities. Check if this is a capabilities request, since VERSION is null
if (String.Compare(request, "GetCapabilities", ignorecase) != 0)
{
WmsException.ThrowWmsException("VERSION parameter not supplied");
return;
}
}
HandlerParams @params = new HandlerParams(context, map, description, ignorecase);
GetFeatureInfoParams infoParams = new GetFeatureInfoParams(_pixelSensitivity, _intersectDelegate);
IWmsHandler handler = null;
if (String.Compare(request, "GetCapabilities", ignorecase) == 0)
handler = new GetCapabilities(@params);
else if (String.Compare(request, "GetFeatureInfo", ignorecase) == 0)
handler = new GetFeatureInfo(@params, infoParams);
else if (String.Compare(request, "GetMap", ignorecase) == 0)
handler = new GetMap(@params);
if (handler == null)
{
WmsException.ThrowWmsException(
WmsException.WmsExceptionCode.OperationNotSupported, String.Format("Invalid request: {0}", request));
}
else handler.Handle();
}
public abstract FeatureInfoResponse GetFeatureInfo(string path, GetFeatureInfo getFeatureInfo);
public override FeatureInfoResponse GetFeatureInfo(string path, GetFeatureInfo getFeatureInfo)
{
throw new NotImplementedException();
}
public abstract FeatureInfoResponse GetFeatureInfo(Capabilities capabilities, string path, GetFeatureInfo getFeatureInfo);
/// <summary>
/// Generates a WMS 1.3.0 compliant response based on a <see cref="SharpMap.Map"/> and the current HttpRequest.
/// </summary>
/// <remarks>
/// <para>
/// The Web Map Server implementation in SharpMap requires v1.3.0 compatible clients,
/// and support the basic operations "GetCapabilities" and "GetMap"
/// as required by the WMS v1.3.0 specification. SharpMap does not support the optional
/// GetFeatureInfo operation for querying.
/// </para>
/// <example>
/// Creating a WMS server in ASP.NET is very simple using the classes in the SharpMap.Web.Wms namespace.
/// <code lang="C#">
/// void page_load(object o, EventArgs e)
/// {
/// //Get the path of this page
/// string url = (Request.Url.Query.Length>0?Request.Url.AbsoluteUri.Replace(Request.Url.Query,""):Request.Url.AbsoluteUri);
/// SharpMap.Web.Wms.Capabilities.WmsServiceDescription description =
/// new SharpMap.Web.Wms.Capabilities.WmsServiceDescription("Acme Corp. Map Server", url);
///
/// // The following service descriptions below are not strictly required by the WMS specification.
///
/// // Narrative description and keywords providing additional information
/// description.Abstract = "Map Server maintained by Acme Corporation. Contact: [email protected].
/// High-quality maps showing roadrunner nests and possible ambush locations.";
/// description.Keywords.Add("bird");
/// description.Keywords.Add("roadrunner");
/// description.Keywords.Add("ambush");
///
/// //Contact information
/// description.ContactInformation.PersonPrimary.Person = "John Doe";
/// description.ContactInformation.PersonPrimary.Organisation = "Acme Inc";
/// description.ContactInformation.Address.AddressType = "postal";
/// description.ContactInformation.Address.Country = "Neverland";
/// description.ContactInformation.VoiceTelephone = "1-800-WE DO MAPS";
/// //Impose WMS constraints
/// description.MaxWidth = 1000; //Set image request size width
/// description.MaxHeight = 500; //Set image request size height
///
/// //Call method that sets up the map
/// //We just add a dummy-size, since the wms requests will set the image-size
/// SharpMap.Map myMap = MapHelper.InitializeMap(new System.Drawing.Size(1,1));
///
/// //Parse the request and create a response
/// SharpMap.Web.Wms.WmsServer.ParseQueryString(myMap,description);
/// }
/// </code>
/// </example>
/// </remarks>
/// <param name="map">Map to serve on WMS</param>
/// <param name="description">Description of map service</param>
///<param name="pixelSensitivity">Tolerance for GetFeatureInfo requests</param>
///<param name="intersectDelegate">Delegate for Getfeatureinfo intersecting, when null, the WMS will default to ICanQueryLayer implementation</param>
public static void ParseQueryString(Map map, Capabilities.WmsServiceDescription description, int pixelSensitivity, InterSectDelegate intersectDelegate)
{
_pixelSensitivity = pixelSensitivity;
_intersectDelegate = intersectDelegate;
if (map == null)
{
throw (new ArgumentException("Map for WMS is null"));
}
if (map.Layers.Count == 0)
{
throw (new ArgumentException("Map doesn't contain any layers for WMS service"));
}
if (HttpContext.Current == null)
{
throw new ApplicationException("An attempt was made to access the WMS server outside a valid HttpContext");
}
HttpContext context = HttpContext.Current;
//IgnoreCase value should be set according to the VERSION parameter
//v1.3.0 is case sensitive, but since it causes a lot of problems with several WMS clients, we ignore casing anyway.
const bool ignorecase = true;
//Collect parameters
string request = context.Request.Params["REQUEST"];
string version = context.Request.Params["VERSION"];
//Check for required parameters
//Request parameter is mandatory
if (request == null)
{
WmsException.ThrowWmsException("Required parameter REQUEST not specified");
return;
}
//Check if version is supported
if (version != null)
{
if (String.Compare(version, "1.3.0", ignorecase) != 0)
{
WmsException.ThrowWmsException("Only version 1.3.0 supported");
return;
}
}
else
{
//Version is mandatory if REQUEST!=GetCapabilities. Check if this is a capabilities request, since VERSION is null
if (String.Compare(request, "GetCapabilities", ignorecase) != 0)
{
WmsException.ThrowWmsException("VERSION parameter not supplied");
return;
}
}
HandlerParams @params = new HandlerParams(context, map, description, ignorecase);
GetFeatureInfoParams infoParams = new GetFeatureInfoParams(_pixelSensitivity, _intersectDelegate);
IWmsHandler handler = null;
if (String.Compare(request, "GetCapabilities", ignorecase) == 0)
{
handler = new GetCapabilities(@params);
}
else if (String.Compare(request, "GetFeatureInfo", ignorecase) == 0)
{
handler = new GetFeatureInfo(@params, infoParams);
}
else if (String.Compare(request, "GetMap", ignorecase) == 0)
{
handler = new GetMap(@params);
}
if (handler == null)
{
WmsException.ThrowWmsException(
WmsException.WmsExceptionCode.OperationNotSupported, String.Format("Invalid request: {0}", request));
}
else
{
handler.Handle();
}
}
