async public Task <IFeatureCursor> NetworkPathEdges(Dijkstra.Nodes nodes, string fields)
{
if (_nfc == null)
{
return(null);
}
//StringBuilder sb = new StringBuilder();
//sb.Append("FDB_OID in (");
//foreach (Dijkstra.Node node in nodes)
//{
// //if (node.Dist > maxDistance)
// // continue;
// if (sb.Length > 12)
// sb.Append(",");
// sb.Append(node.EId);
//}
//sb.Append(")");
//QueryFilter filter = new QueryFilter();
//filter.AddField("FDB_OID");
//filter.AddField("FDB_SHAPE");
//if (!String.IsNullOrEmpty(fields))
//{
// foreach (string field in fields.Split(','))
// filter.AddField(field);
//}
//filter.WhereClause = sb.ToString();
RowIDFilter filter = new RowIDFilter(String.Empty);
foreach (Dijkstra.Node node in nodes)
{
filter.IDs.Add(node.EId);
}
if (!String.IsNullOrEmpty(fields))
{
foreach (string field in fields.Split(','))
{
filter.AddField(field);
}
}
return(await _nfc.GetEdgeFeatures(filter));
}
async public Task <IFeature> GetEdgeFeature(int eid)
{
RowIDFilter filter = new RowIDFilter(String.Empty);
filter.IDs.Add(eid);
filter.AddField("*");
IFeatureCursor cursor = await GetEdgeFeatures(filter);
if (cursor == null)
{
return(null);
}
IFeature feature = await cursor.NextFeature();
cursor.Dispose();
if (feature != null && feature.FindField("FCID") != null && feature.FindField("OID") != null &&
_edgeFcs.ContainsKey((int)feature["FCID"]))
{
IGraphEdge edge = _pageManager.GetEdge(eid);
try
{
if (edge != null && edge.FcId == -1) // Complex Edge
{
filter = new RowIDFilter("FDB_OID");
filter.IDs.Add((int)feature["OID"]);
filter.AddField("*");
IFeatureClass fc = _edgeFcs[(int)feature["FCID"]];
using (IFeatureCursor c = await fc.GetFeatures(filter))
{
return(await c.NextFeature());
}
}
}
catch { }
}
return(feature);
}
public IFeature GetEdgeFeature(int eid)
{
RowIDFilter filter = new RowIDFilter(String.Empty);
filter.IDs.Add(eid);
filter.AddField("*");
IFeature feature = null;
using (IFeatureCursor cursor = GetEdgeFeatures(filter))
{
feature = cursor.NextFeature;
}
if (feature != null && feature.FindField("FCID") != null && feature.FindField("OID") != null &&
_edgeFcs.ContainsKey(Convert.ToInt32(feature["FCID"])))
{
IGraphEdge edge = _pageManager.GetEdge(eid);
try
{
if (edge != null && edge.FcId == -1) // Complex Edge
{
filter = new RowIDFilter("FDB_OID");
filter.IDs.Add(Convert.ToInt32(feature["OID"]));
filter.AddField("*");
IFeatureClass fc = _edgeFcs[Convert.ToInt32(feature["FCID"])];
using (IFeatureCursor c = fc.GetFeatures(filter))
{
return(c.NextFeature);
}
}
}
catch { }
}
return(feature);
}
public IFeatureCursor GetEdgeFeatures(IQueryFilter filter)
{
if (_edgeFcs.Count == 0)
{
return(null);
}
if (filter is SpatialFilter)
{
List <IFeatureClass> edgeFcs = new List <IFeatureClass>();
if (_edgeFcs != null)
{
foreach (IFeatureClass fc in _edgeFcs.Values)
{
edgeFcs.Add(fc);
}
}
return(new NetworkFeatureCursor(_fdb, _name, edgeFcs, null, filter));
}
if (filter is RowIDFilter)
{
RowIDFilter idFilter = (RowIDFilter)filter;
Dictionary <int, QueryFilter> rfilters = new Dictionary <int, QueryFilter>();
Dictionary <int, Dictionary <int, List <FieldValue> > > additionalFields = new Dictionary <int, Dictionary <int, List <FieldValue> > >();
foreach (int eid in idFilter.IDs)
{
IGraphEdge edge = _pageManager.GetEdge(eid);
if (edge == null || _edgeFcs.ContainsKey(edge.FcId) == false)
{
continue;
}
if (!rfilters.ContainsKey(edge.FcId))
{
string idFieldName = "FDB_OID";
string shapeFieldName = "FDB_SHAPE";
IFeatureClass fc = edge.FcId >= 0 ? _fdb.GetFeatureclass(edge.FcId) : null;
if (fc != null)
{
idFieldName = fc.IDFieldName;
shapeFieldName = fc.ShapeFieldName;
}
RowIDFilter rfilter = new RowIDFilter(edge.FcId >= 0 ? idFieldName : "EID");
rfilter.fieldPostfix = rfilter.fieldPrefix = "\"";
rfilters.Add(edge.FcId, rfilter);
additionalFields.Add(edge.FcId, new Dictionary <int, List <FieldValue> >());
rfilter.IgnoreUndefinedFields = true;
rfilters[edge.FcId].AddField(shapeFieldName);
if (filter.SubFields.IndexOf("*") != -1 || fc == null)
{
rfilters[edge.FcId].AddField("*");
}
else
{
foreach (string field in filter.SubFields.Split(' '))
{
if (field == shapeFieldName)
{
continue;
}
if (fc.Fields.FindField(field) != null)
{
rfilter.AddField(fc.Fields.FindField(field).name);
}
}
}
}
((RowIDFilter)rfilters[edge.FcId]).IDs.Add(edge.FcId >= 0 ? edge.Oid : edge.Eid);
additionalFields[edge.FcId].Add(edge.FcId >= 0 ? edge.Oid : edge.Eid, new List <FieldValue>()
{
new FieldValue("_eid", edge.Eid)
});
}
if (rfilters.ContainsKey(-1))
{
RowIDFilter complexEdgeFilter = (RowIDFilter)rfilters[-1];
QueryFilter ceFilter = new QueryFilter(complexEdgeFilter);
ceFilter.WhereClause = complexEdgeFilter.RowIDWhereClause;
rfilters[-1] = ceFilter;
}
return(new CursorCollection <int>(_edgeFcs, rfilters, additionalFields));
}
return(null);
}