public override string QueryMapFeatures(RuntimeMap rtMap, int maxFeatures, string wkt, bool persist, string selectionVariant, QueryMapOptions extraOptions)
{
string runtimeMapName = rtMap.Name;
MgRenderingService rs = this.Connection.CreateService(MgServiceType.RenderingService) as MgRenderingService;
MgResourceService res = this.Connection.CreateService(MgServiceType.ResourceService) as MgResourceService;
MgMap map = new MgMap();
string mapname = runtimeMapName.IndexOf(":") > 0 ? new ResourceIdentifier(runtimeMapName).Path : runtimeMapName;
map.Open(res, mapname);
MgWktReaderWriter r = new MgWktReaderWriter();
MgStringCollection layerNames = null;
string featureFilter = "";
int layerAttributeFilter = 0;
int op = MgFeatureSpatialOperations.Intersects;
if (selectionVariant == "TOUCHES")
op = MgFeatureSpatialOperations.Touches;
else if (selectionVariant == "INTERSECTS")
op = MgFeatureSpatialOperations.Intersects;
else if (selectionVariant == "WITHIN")
op = MgFeatureSpatialOperations.Within;
else if (selectionVariant == "ENVELOPEINTERSECTS")
op = MgFeatureSpatialOperations.EnvelopeIntersects;
else
throw new ArgumentException("Unknown or unsupported selection variant: " + selectionVariant);
if (extraOptions != null)
{
if (!string.IsNullOrEmpty(extraOptions.FeatureFilter))
featureFilter = extraOptions.FeatureFilter;
if (extraOptions.LayerNames != null && extraOptions.LayerNames.Length > 0)
{
layerNames = new MgStringCollection();
foreach (var name in extraOptions.LayerNames)
layerNames.Add(name);
}
layerAttributeFilter = (int)extraOptions.LayerAttributeFilter;
}
MgFeatureInformation info = rs.QueryFeatures(map, layerNames, r.Read(wkt), op, featureFilter, maxFeatures, layerAttributeFilter);
string xml = "";
GetByteReaderMethod fetch = () => { return info.ToXml(); };
using (var sr = new StreamReader(new MgReadOnlyStream(fetch)))
{
xml = sr.ReadToEnd();
}
//We only want the FeatureSet element
var doc = new System.Xml.XmlDocument();
doc.LoadXml(xml);
xml = doc.DocumentElement["FeatureSet"].OuterXml;
MgSelection sel = new MgSelection(map, xml);
sel.Save(res, mapname);
LogMethodCall("QueryMapFeatures", true, runtimeMapName, wkt, persist, selectionVariant, extraOptions == null ? "null" : "QueryMapOptions");
return xml;
}
public IActionResult SelectFeature(SelectInputModel input)
{
MgSiteConnection conn = CreateConnection(input);
MgMap map = new MgMap(conn);
map.Open(input.MapName);
MgLayerCollection layers = map.GetLayers();
int lidx = layers.IndexOf("Parcels");
if (lidx < 0)
{
throw new Exception("Layer not found on map: Parcels");
}
MgLayerBase layer = layers.GetItem(lidx);
MgClassDefinition clsDef = layer.GetClassDefinition();
MgPropertyDefinitionCollection props = clsDef.GetProperties();
MgPropertyDefinition idProp = props.GetItem(0);
string idPropName = idProp.Name;
MgFeatureQueryOptions query = new MgFeatureQueryOptions();
query.SetFilter(idPropName + " = " + input.id);
MgFeatureReader reader = layer.SelectFeatures(query);
MgSelection selection = new MgSelection(map, "");
MgResourceService resSvc = (MgResourceService)conn.CreateService(MgServiceType.ResourceService);
string result = "";
try
{
selection.Open(resSvc, input.MapName);
selection.FromXml(""); //Clear existing
selection.AddFeatures(layer, reader, 0);
result = selection.ToXml();
selection.Save(resSvc);
}
finally
{
reader.Close();
}
return Content(result, MgMimeType.Xml);
}