static public void Main(string[] args)
{
int i, j;
Storage db = StorageFactory.Instance.CreateStorage();
db.SetProperty("perst.concurrent.iterator", true);
db.Open("testrnd.dbs", pagePoolSize);
#if USE_GENERICS
FieldIndex <int, Record> root = (FieldIndex <int, Record>)db.Root;
if (root == null)
{
root = db.CreateRandomAccessFieldIndex <int, Record>("i", true);
db.Root = root;
}
#else
FieldIndex root = (FieldIndex)db.Root;
if (root == null)
{
root = db.CreateRandomAccessFieldIndex(typeof(Record), "i", true);
db.Root = root;
}
#endif
DateTime start = DateTime.Now;
for (i = 0, j = 0; i < nRecords; i++, j += step)
{
Record rec = new Record();
rec.i = j % nRecords;
root.Put(rec);
}
db.Commit();
Console.WriteLine("Elapsed time for inserting " + nRecords + " records: " + (DateTime.Now - start));
start = DateTime.Now;
for (i = 0; i < nRecords; i++)
{
#if USE_GENERICS
Record rec = root[i];
#else
Record rec = (Record)root[i];
#endif
Debug.Assert(rec.i == i);
Debug.Assert(root.IndexOf(new Key(i)) == i);
}
Console.WriteLine("Elapsed time for performing " + nRecords + " Get operations: " + (DateTime.Now - start));
start = DateTime.Now;
for (i = 0; i < nRecords; i++)
{
#if USE_GENERICS
Record rec = root.GetAt(i);
#else
Record rec = (Record)root.GetAt(i);
#endif
Debug.Assert(rec.i == i);
}
Console.WriteLine("Elapsed time for performing " + nRecords + " GetAt operations: " + (DateTime.Now - start));
start = DateTime.Now;
i = nRecords / 2;
IDictionaryEnumerator e = root.GetDictionaryEnumerator(nRecords / 2, IterationOrder.AscentOrder);
while (e.MoveNext())
{
Debug.Assert((int)e.Key == i && ((Record)e.Value).i == i);
i += 1;
}
Debug.Assert(i == nRecords);
i = nRecords / 2 - 1;
e = root.GetDictionaryEnumerator(nRecords / 2 - 1, IterationOrder.DescentOrder);
while (e.MoveNext())
{
Debug.Assert((int)e.Key == i && ((Record)e.Value).i == i);
i -= 1;
}
Debug.Assert(i == -1);
Console.WriteLine("Elapsed time for iteration through " + nRecords + " records: " + (DateTime.Now - start));
start = DateTime.Now;
for (i = 0, j = 0; i < nRecords; i += step, j++)
{
#if USE_GENERICS
Record rec = root.GetAt(i - j);
#else
Record rec = (Record)root.GetAt(i - j);
#endif
Debug.Assert(rec.i == i);
root.Remove(rec);
rec.Deallocate();
}
Console.WriteLine("Elapsed time for deleting " + nRecords / step + " records: " + (DateTime.Now - start));
root.Clear();
Debug.Assert(!root.GetEnumerator().MoveNext());
db.Close();
}