public IEnumerable <object> GetBySubject(int subj)
{
long start = 0;
long number = index_spo.Count();
var res = index_spo.BinarySearchAll(start, number, subj, new object[] { subj, null, null })
.Select(off => table.GetElement(off))
.ToArray()
;
return(res);
}
public void Look()
{
foreach (long offset in index_spo.ElementValues().Select(pair => ((object[])pair)[1]).Take(10))
{
var v = table.GetElement(offset);
Console.Write($"{tp_triple.Interpret(v)} ");
}
Console.WriteLine();
int nprobe = 1000;
Random rnd = new Random();
System.Diagnostics.Stopwatch sw = new System.Diagnostics.Stopwatch();
//sw.Restart();
//for (int i = 0; i < nprobe; i++)
//{
// int subj = rnd.Next((int)(index_spo.Count() / 2));
// long offset = index_spo.BinarySearchOffsetAny(new object[] { subj, null, null });
// if (offset == long.MinValue) throw new Exception("not found");
// var v = table.GetElement(offset);
// //Console.WriteLine($"subj={subj} triple={tp_triple.Interpret(v)}");
//}
//sw.Stop();
//Console.WriteLine($"{nprobe} GetAny search ok. duration={sw.ElapsedMilliseconds}");
sw.Restart();
for (int i = 0; i < nprobe; i++)
{
int subj = rnd.Next((int)(index_spo.Count() / 2));
object sample = new object[] { subj, null, null };
int key = keyFunc(sample);
long start = 0L, number = index_spo.Count();
if (scaleFunc != null)
{
Diapason dia = scaleFunc(key);
start = dia.start;
number = dia.numb;
}
var res = index_spo.BinarySearchAll(start, number, key, sample)
.Select(off => table.GetElement(off))
;
if (res.Count() != 2)
{
//var arr = res.ToArray();
//foreach (object ob in res)
//{
// Console.WriteLine($"ok. {tp_triple.Interpret(ob)}");
//}
//Console.WriteLine();
//var offs = index_spo.BinarySearchAllInside(0, index_spo.Count(), new object[] { subj, null, null }).ToArray();
//foreach (var off in offs)
//{
//}
Console.WriteLine($"res.Count()={res.Count()}");
}
}
sw.Stop();
Console.WriteLine($"{nprobe} GetAll search ok. duration={sw.ElapsedMilliseconds}");
}