protected IFeatureClass CreateTargetFeatureclass(IGeometryDef geomDef, IFields fields)
{
IFeatureClass sFc = SourceFeatureClass;
BinaryTreeDef sDef = null;
if (sFc.Dataset != null && sFc.Dataset.Database is AccessFDB)
{
AccessFDB sFdb = (AccessFDB)sFc.Dataset.Database;
sDef = sFdb.BinaryTreeDef(sFc.Name);
}
TargetDatasetElement e = this.TargetDatasetElement;
IDataset ds = this.TargetDataset;
IFeatureDatabase db = this.TargetFeatureDatabase;
if (db.CreateFeatureClass(ds.DatasetName, e.Title, geomDef, fields) == -1)
{
throw new Exception("Can't create target featureclass:\n" + db.lastErrorMsg);
}
IDatasetElement element = ds[e.Title];
if (element == null || !(element.Class is IFeatureClass))
{
throw new Exception("Can't open created featureclass");
}
IFeatureClass tFc = element.Class as IFeatureClass;
if (db is AccessFDB)
{
int maxAllowedLevel = ((db is SqlFDB) ? 62 : 30);
if (sDef == null)
{
IEnvelope sEnv = sFc.Envelope;
sDef = (sEnv != null) ? new BinaryTreeDef(sFc.Envelope, 10, 200, 0.55) : new BinaryTreeDef(new Envelope());
}
if (sDef.Bounds != null &&
sDef.SpatialReference != null &&
!sDef.SpatialReference.Equals(tFc.SpatialReference))
{
if (!sDef.ProjectTo(tFc.SpatialReference))
{
throw new Exception("Can't project SpatialIndex Boundaries...");
}
}
((AccessFDB)db).SetSpatialIndexBounds(tFc.Name, "BinaryTree2", sDef.Bounds, sDef.SplitRatio, sDef.MaxPerNode, Math.Min(sDef.MaxLevel, maxAllowedLevel));
((AccessFDB)db).SetFeatureclassExtent(tFc.Name, sDef.Bounds);
}
return(tFc);
}
