/// <summary>
/// operation solve trace
/// </summary>
/// <returns>solve trace</returns>
public override JsonObject Solve()
{
try
{
if ((this.edgeFlags.Length == 0) && (this.junctionFlags.Length == 0))
{
string message = "No input valid flags found";
if (this.flagNotFound.Count == 0)
{
throw new GeometricNetworkException(message);
}
else
{
JsonObject error = (new ObjectError(message)).ToJsonObject();
error.AddArray("flagsNotFound", Helper.GetListJsonObjects(this.flagNotFound));
if (this.barrierNotFound.Count > 0)
{
error.AddArray("barriersNotFound", Helper.GetListJsonObjects(this.barrierNotFound));
}
return(error);
}
}
ITraceFlowSolverGEN traceFlowSolver = new TraceFlowSolverClass() as ITraceFlowSolverGEN;
INetSolver netSolver = traceFlowSolver as INetSolver;
INetwork network = this.geometricNetwork.Network;
netSolver.SourceNetwork = network;
// flag origin
this.SetFlagsOrigin(ref traceFlowSolver);
// barrier
this.SetBarriers(ref traceFlowSolver);
// set disabled layers
foreach (int i in this.DisableLayers)
{
netSolver.DisableElementClass(i);
}
// set weight
this.SetWeights(ref traceFlowSolver);
if ((this.TraceSolverType != TraceSolverType.FindCircuits) && (this.TraceSolverType != TraceSolverType.FindCommonAncestors))
{
// The TraceIndeterminateFlow property affects the trace results of trace solvers whose FlowMethod parameter is esriFMUpstream or esriFMDownstream
if ((this.FlowMethod == esriFlowMethod.esriFMDownstream) || (this.FlowMethod == esriFlowMethod.esriFMUpstream))
{
traceFlowSolver.TraceIndeterminateFlow = this.TraceIndeterminateFlow;
}
}
IEnumNetEID junctionEIDs = null;
IEnumNetEID edgeEIDs = null;
object totalCost;
int count;
object[] segmentCosts;
JsonObject objectJson = new JsonObject();
switch (this.TraceSolverType)
{
case TraceSolverType.FindAccumulation:
traceFlowSolver.FindAccumulation(this.FlowMethod, this.FlowElements, out junctionEIDs, out edgeEIDs, out totalCost);
objectJson.AddDouble("totalCost", (double)totalCost);
break;
case TraceSolverType.FindCircuits:
traceFlowSolver.FindCircuits(this.FlowElements, out junctionEIDs, out edgeEIDs);
break;
case TraceSolverType.FindCommonAncestors:
traceFlowSolver.FindCommonAncestors(this.FlowElements, out junctionEIDs, out edgeEIDs);
break;
case TraceSolverType.FindFlowElements:
traceFlowSolver.FindFlowElements(this.FlowMethod, this.FlowElements, out junctionEIDs, out edgeEIDs);
break;
case TraceSolverType.FindFlowEndElements:
traceFlowSolver.FindFlowEndElements(this.FlowMethod, this.FlowElements, out junctionEIDs, out edgeEIDs);
break;
case TraceSolverType.FindFlowUnreachedElements:
traceFlowSolver.FindFlowUnreachedElements(this.FlowMethod, this.FlowElements, out junctionEIDs, out edgeEIDs);
break;
case TraceSolverType.FindPath:
count = Math.Max(this.junctionFlags.Length, this.edgeFlags.Length);
if (count < 2)
{
throw new GeometricNetworkException("Edge or junction found < 2!");
}
--count;
segmentCosts = new object[count];
traceFlowSolver.FindPath(this.FlowMethod, this.ShortestPathObjFn, out junctionEIDs, out edgeEIDs, count, ref segmentCosts);
objectJson.AddArray("segmentCosts", segmentCosts);
break;
case TraceSolverType.FindSource:
count = this.junctionFlags.Length + this.edgeFlags.Length;
segmentCosts = new object[count];
traceFlowSolver.FindSource(this.FlowMethod, this.ShortestPathObjFn, out junctionEIDs, out edgeEIDs, count, ref segmentCosts);
objectJson.AddArray("segmentCosts", segmentCosts);
break;
case TraceSolverType.FindLongest:
// get end junctions in upstream
IEnumNetEID junctionEIDsFindLongest = null;
IEnumNetEID edgeEIDsFindLongest = null;
traceFlowSolver.FindFlowEndElements(esriFlowMethod.esriFMUpstream, esriFlowElements.esriFEJunctions, out junctionEIDsFindLongest, out edgeEIDsFindLongest);
int? eidLongest = null;
double eidLongestLenght = double.MinValue;
if (junctionEIDsFindLongest.Count > 0)
{
double eidLongestLenghtCurrent = double.NaN;
for (int i = 0; i < junctionEIDsFindLongest.Count; i++)
{
int netEIDCurrent = junctionEIDsFindLongest.Next();
object[] segmentLenghts = new object[1];
IEnumNetEID junctionEIDsLongest = null;
IEnumNetEID edgeEIDsLongest = null;
INetFlag netFlag = new JunctionFlagClass();
INetElements netElements = this.geometricNetwork.Network as INetElements;
int featureClassID, featureID, subID;
netElements.QueryIDs(netEIDCurrent, esriElementType.esriETJunction, out featureClassID, out featureID, out subID);
netFlag.UserClassID = featureClassID;
netFlag.UserID = featureID;
netFlag.UserSubID = subID;
IJunctionFlag[] junctionFlags = new IJunctionFlag[] { this.junctionFlags[0], netFlag as IJunctionFlag };
traceFlowSolver.PutJunctionOrigins(ref junctionFlags);
traceFlowSolver.FindPath(esriFlowMethod.esriFMUpstream, esriShortestPathObjFn.esriSPObjFnMinMax, out junctionEIDsLongest, out edgeEIDsLongest, 1, ref segmentLenghts);
if (segmentLenghts[0] != null)
{
eidLongestLenghtCurrent = Convert.ToDouble(segmentLenghts[0]);
if (eidLongestLenghtCurrent > eidLongestLenght)
{
eidLongestLenght = eidLongestLenghtCurrent;
eidLongest = netEIDCurrent;
edgeEIDs = edgeEIDsLongest;
junctionEIDs = junctionEIDsLongest;
}
}
}
}
else
{
throw new GeometricNetworkException("Junction end not found!");
}
if (eidLongest.HasValue)
{
objectJson.AddDouble("totalCost", eidLongestLenght);
}
else
{
throw new GeometricNetworkException("EID longest not found!");
}
break;
default:
throw new GeometricNetworkException("Trace solver type not found");
}
this.SetResults(ref objectJson, edgeEIDs, junctionEIDs);
objectJson.AddArray("flagsNotFound", Helper.GetListJsonObjects(this.flagNotFound));
objectJson.AddArray("barriersNotFound", Helper.GetListJsonObjects(this.barrierNotFound));
return(objectJson);
}
catch (Exception e)
{
return((new ObjectError(e.Message)).ToJsonObject());
}
}
