async static public Task <IFeatureClass> Create(SdeDataset dataset, string name, string multiVersionedViewName)
{
var featureClass = new SdeFeatureClass();
if (dataset.RepoProvider == null)
{
throw new Exception("FeatureClass: Repository not initialized");
}
featureClass._name = name;
featureClass._geomType = await dataset.RepoProvider.FeatureClassGeometryType(featureClass);
featureClass._fields = await dataset.RepoProvider.FeatureClassFields(featureClass);
featureClass._idfield = featureClass._fields.ToEnumerable()
.Where(f => f.type == FieldType.ID)
.FirstOrDefault()?.name;
featureClass._shapefield = featureClass._fields.ToEnumerable()
.Where(f => f.type == FieldType.Shape)
.FirstOrDefault()?.name;
if (!String.IsNullOrEmpty(featureClass._shapefield))
{
switch (featureClass._geomType)
{
case geometryType.Polygon:
featureClass._fields.Add(new Field($"{ featureClass._shapefield }.STArea()", FieldType.Double));
featureClass._fields.Add(new Field($"{ featureClass._shapefield }.STLength()", FieldType.Double));
break;
case geometryType.Polyline:
featureClass._fields.Add(new Field($"{ featureClass._shapefield }.STLength()", FieldType.Double));
break;
}
}
featureClass._dataset = dataset;
if (featureClass._sRef == null && await dataset.RepoProvider.FeatureClassSpatialReference(featureClass) > 0)
{
featureClass._sRef = gView.Framework.Geometry.SpatialReference.FromID("epsg:" + await dataset.RepoProvider.FeatureClassSpatialReference(featureClass));
}
featureClass.MultiVersionedViewName = multiVersionedViewName;
return(featureClass);
}
async public override Task <IDatasetElement> Element(string title)
{
if (RepoProvider == null)
{
throw new Exception("Repository not initialized");
}
title = title.ToLower();
var sdeLayer = RepoProvider.Layers.Where(l => (l.Owner + "." + l.TableName).ToLower() == title).FirstOrDefault();
if (sdeLayer != null)
{
return(new DatasetElement(await SdeFeatureClass.Create(this,
sdeLayer.Owner + "." + sdeLayer.TableName,
String.IsNullOrWhiteSpace(sdeLayer.MultiVersionedViewName) ? null : sdeLayer.Owner + "." + sdeLayer.MultiVersionedViewName)));
}
return(null);
}
async public override Task <List <IDatasetElement> > Elements()
{
if (RepoProvider == null)
{
throw new Exception("Repository not initialized");
}
if (_layers == null || _layers.Count == 0)
{
List <IDatasetElement> layers = new List <IDatasetElement>();
foreach (var sdeLayer in RepoProvider.Layers)
{
layers.Add(new DatasetElement(
await SdeFeatureClass.Create(this, sdeLayer.Owner + "." + sdeLayer.TableName,
String.IsNullOrWhiteSpace(sdeLayer.MultiVersionedViewName) ? null : sdeLayer.Owner + "." + sdeLayer.MultiVersionedViewName)));
}
_layers = layers;
}
return(_layers);
}