private static byte[] ExtractHandler(NameValueCollection boundVariables,
JsonObject operationInput,
string outputFormat,
string requestProperties,
out string responseProperties)
{
responseProperties = null;
const string methodName = "ExtractIntersection";
var errors = new ResponseContainer(HttpStatusCode.BadRequest, "");
double? featureId;
if (!operationInput.TryGetAsDouble("id", out featureId) && featureId.HasValue)
{
errors.AddMessage("The id of the shape is required.");
}
if (errors.HasErrors)
{
return(Json(errors));
}
#if !DEBUG
_logger.LogMessage(ServerLogger.msgType.infoStandard, methodName, MessageCode, "Params received");
#endif
var fireLayerMap = _featureClassIndexMap.First(x => x.LayerName == "Fire Perimeter");
var fireLayer = fireLayerMap.FeatureClass;
var perimeterFeature = fireLayer.GetFeature(Convert.ToInt32(featureId.Value));
var inputGeometry = perimeterFeature.ShapeCopy;
#if !DEBUG
_logger.LogMessage(ServerLogger.msgType.infoStandard, methodName, MessageCode, "Params valid");
#endif
var filterGeometry = (ITopologicalOperator4)inputGeometry;
if (filterGeometry == null)
{
errors.Message = "input geometry could not become a topological operator.";
return(Json(errors));
}
filterGeometry.IsKnownSimple_2 = false;
filterGeometry.Simplify();
var totalArea = ((IArea)inputGeometry).Area;
if (totalArea < 0)
{
((ICurve)inputGeometry).ReverseOrientation();
}
var filter = new SpatialFilter
{
Geometry = inputGeometry,
SpatialRel = esriSpatialRelEnum.esriSpatialRelIntersects
};
var whole = (ITopologicalOperator4)inputGeometry;
whole.Simplify();
var searchResults = new Dictionary <string, IList <IntersectAttributes> >
{
{
"fire", new[]
{
new IntersectAttributes(new[]
{
new KeyValuePair <string, object>("total", "total")
})
{
Intersect = totalArea
}
}
}
};
var criterias = new List <Criteria>
{
new Criteria
{
LayerIndex = _featureClassIndexMap.First(x => x.LayerName == "Municipal Boundary").Index,
Attributes = new[] { "NAME" },
JsonPropertyName = "muni",
CalculationCommand = new CalculateIntersectionCommand(whole, _logger)
},
new Criteria
{
LayerIndex = _featureClassIndexMap.First(x => x.LayerName == "Municipal Boundary").Index,
FeatureClassIndexMap = _featureClassIndexMap,
Attributes = new[] { "NAME" },
JsonPropertyName = "muniPrivate",
CalculationCommand = new CalculateMuniPrivateCommand(whole, _logger)
{
LandOwnership = _featureClassIndexMap.Single(x => x.LayerName == "Land Ownership")
}
},
new Criteria
{
LayerIndex = _featureClassIndexMap.First(x => x.LayerName == "County Boundary").Index,
Attributes = new[] { "NAME" },
JsonPropertyName = "county",
CalculationCommand = new CalculateIntersectionCommand(whole, _logger)
},
new Criteria
{
LayerIndex = _featureClassIndexMap.First(x => x.LayerName == "County Boundary").Index,
Attributes = new[] { "NAME" },
JsonPropertyName = "countyPrivate",
CalculationCommand = new CalculateCountyPrivateCommand(whole, _logger)
{
LandOwnership = _featureClassIndexMap.Single(x => x.LayerName == "Land Ownership"),
Municipalities = _featureClassIndexMap.First(x => x.LayerName == "Municipal Boundary")
}
},
new Criteria
{
LayerIndex = _featureClassIndexMap.Single(x => x.LayerName == "Land Ownership").Index,
Attributes = new[] { "OWNER" },
JsonPropertyName = "owner",
CalculationCommand = new CalculateIntersectionCommand(whole, _logger)
},
new Criteria
{
LayerIndex = _featureClassIndexMap.Single(x => x.LayerName == "Land Ownership").Index,
Attributes = new[] { "ADMIN" },
JsonPropertyName = "admin",
CalculationCommand = new CalculateIntersectionCommand(whole, _logger)
},
new Criteria
{
LayerIndex = _featureClassIndexMap.Single(x => x.LayerName == "States Boundary").Index,
Attributes = new[] { "STATE_NAME" },
JsonPropertyName = "state",
CalculationCommand = new CalculateIntersectionCommand(whole, _logger)
}
};
foreach (var criteria in criterias)
{
// get the IFeatureClass
var container = _featureClassIndexMap.Single(x => x.Index == criteria.LayerIndex);
// get the index of the fields to calculate intersections for
var fieldMap = container.FieldMap.Select(x => x.Value)
.Where(y => criteria.Attributes.Contains(y.Field.ToUpper()))
.ToList();
#if !DEBUG
_logger.LogMessage(ServerLogger.msgType.infoStandard, methodName, MessageCode,
string.Format("Querying {0} at index {1}", container.LayerName, container.Index));
#endif
var cursor = container.FeatureClass.Search(filter, true);
IFeature feature;
while ((feature = cursor.NextFeature()) != null)
{
var values = new GetValueAtIndexCommand(fieldMap, feature).Execute();
var attributes = new IntersectAttributes(values);
#if !DEBUG
_logger.LogMessage(ServerLogger.msgType.infoStandard, methodName, MessageCode,
"intersecting " + container.LayerName);
#endif
IntersectionPart intersectionPart;
try
{
intersectionPart = criteria.GetIntersectionWith(feature);
}
catch (Exception ex)
{
return(Json(new ResponseContainer(HttpStatusCode.InternalServerError, ex.Message)));
}
attributes.Intersect = intersectionPart.Size;
if (searchResults.ContainsKey(criteria.JsonPropertyName))
{
if (searchResults[criteria.JsonPropertyName].Any(x => new MultiSetComparer <object>().Equals(x.Attributes, attributes.Attributes)))
{
var duplicate = searchResults[criteria.JsonPropertyName]
.Single(x => new MultiSetComparer <object>().Equals(x.Attributes, attributes.Attributes));
duplicate.Intersect += attributes.Intersect;
}
else
{
searchResults[criteria.JsonPropertyName].Add(attributes);
}
}
else
{
searchResults[criteria.JsonPropertyName] = new Collection <IntersectAttributes> {
attributes
};
}
}
}
var response = new IntersectResult(searchResults);
#if !DEBUG
_logger.LogMessage(ServerLogger.msgType.infoStandard, methodName, MessageCode, string.Format("Returning results {0}", searchResults.Count));
#endif
return(Json(new ResponseContainer <IntersectResult>(response)));
}