public void TestQueryTime(string sbnFile)
{
if (!File.Exists(sbnFile))
{
throw new IgnoreException("File '" + sbnFile + "' not found!");
}
var sw = new Stopwatch();
SbnTree sbn = null;
sw.Start();
Assert.DoesNotThrow(() => sbn = SbnTree.Load(sbnFile));
sw.Stop();
Console.WriteLine("SbnTree read in {0:N0} ticks", sw.ElapsedTicks);
var fullExtent = sbn.Extent;
for (var i = 0; i < 10; i++)
{
sw.Restart();
var fids = new List <uint>(sbn.QueryFids(fullExtent));
sw.Stop();
Console.WriteLine("Querying full in {0:N0} ticks ({1} ids)", sw.ElapsedTicks, fids.Count);
}
var partialExtent = ToSbn(new Envelope(
fullExtent.MinX + 0.4 * fullExtent.Width,
fullExtent.MaxX - 0.4 * fullExtent.Width,
fullExtent.MinY + 0.3 * fullExtent.Height,
fullExtent.MaxY - 0.3 * fullExtent.Height));
for (var i = 0; i < 10; i++)
{
sw.Restart();
var fids = new List <uint>(sbn.QueryFids(partialExtent));
sw.Stop();
Console.WriteLine("Querying part in {0:N0} ticks ({1} ids)", sw.ElapsedTicks, fids.Count);
}
}
public Collection <uint> Search(Envelope e)
{
var list = new List <uint>();
foreach (var queryFid in _sbnTree.QueryFids(e))
{
var oid = queryFid - 1;
if (oid < _sbnTree.FeatureCount)
{
list.Add(oid);
}
}
return(new Collection <uint>(list));
}
