static public void Main(string[] args) { int i; Storage db = StorageFactory.Instance.CreateStorage(); for (i = 0; i < args.Length; i++) { if ("altbtree" == args[i]) { db.SetProperty("perst.alternative.btree", true); } } db.Open("testcidx.dbs", pagePoolSize); #if USE_GENERICS MultiFieldIndex <Record> root = (MultiFieldIndex <Record>)db.Root; if (root == null) { root = db.CreateFieldIndex <Record>(new string[] { "intKey", "strKey" }, true); #else FieldIndex root = (FieldIndex)db.Root; if (root == null) { root = db.CreateFieldIndex(typeof(Record), new string[] { "intKey", "strKey" }, true); #endif db.Root = root; } DateTime start = DateTime.Now; long key = 1999; for (i = 0; i < nRecords; i++) { Record rec = new Record(); key = (3141592621L * key + 2718281829L) % 1000000007L; rec.intKey = (int)((ulong)key >> 32); rec.strKey = Convert.ToString((int)key); root.Put(rec); } db.Commit(); Console.WriteLine("Elapsed time for inserting " + nRecords + " records: " + (DateTime.Now - start)); start = DateTime.Now; key = 1999; int minKey = Int32.MaxValue; int maxKey = Int32.MinValue; for (i = 0; i < nRecords; i++) { key = (3141592621L * key + 2718281829L) % 1000000007L; int intKey = (int)((ulong)key >> 32); String strKey = Convert.ToString((int)key); #if USE_GENERICS Record rec = root.Get(new Key(new Object[] { intKey, strKey })); #else Record rec = (Record)root.Get(new Key(new Object[] { intKey, strKey })); #endif Debug.Assert(rec != null && rec.intKey == intKey && rec.strKey.Equals(strKey)); if (intKey < minKey) { minKey = intKey; } if (intKey > maxKey) { maxKey = intKey; } } Console.WriteLine("Elapsed time for performing " + nRecords + " index searches: " + (DateTime.Now - start)); start = DateTime.Now; int n = 0; string prevStr = ""; int prevInt = minKey; foreach (Record rec in root.Range(new Key(minKey, ""), new Key(maxKey + 1, "???"), IterationOrder.AscentOrder)) { Debug.Assert(rec.intKey > prevInt || rec.intKey == prevInt && rec.strKey.CompareTo(prevStr) > 0); prevStr = rec.strKey; prevInt = rec.intKey; n += 1; } Debug.Assert(n == nRecords); n = 0; prevInt = maxKey + 1; foreach (Record rec in root.Range(new Key(minKey, "", false), new Key(maxKey + 1, "???", false), IterationOrder.DescentOrder)) { Debug.Assert(rec.intKey < prevInt || rec.intKey == prevInt && rec.strKey.CompareTo(prevStr) < 0); prevStr = rec.strKey; prevInt = rec.intKey; n += 1; } Debug.Assert(n == nRecords); Console.WriteLine("Elapsed time for iterating through " + (nRecords * 2) + " records: " + (DateTime.Now - start)); start = DateTime.Now; key = 1999; for (i = 0; i < nRecords; i++) { key = (3141592621L * key + 2718281829L) % 1000000007L; int intKey = (int)((ulong)key >> 32); String strKey = Convert.ToString((int)key); #if USE_GENERICS Record rec = root.Get(new Key(new Object[] { intKey, strKey })); #else Record rec = (Record)root.Get(new Key(new Object[] { intKey, strKey })); #endif Debug.Assert(rec != null && rec.intKey == intKey && rec.strKey.Equals(strKey)); Debug.Assert(root.Contains(rec)); root.Remove(rec); rec.Deallocate(); } Debug.Assert(!root.GetEnumerator().MoveNext()); Debug.Assert(!root.Reverse().GetEnumerator().MoveNext()); Console.WriteLine("Elapsed time for deleting " + nRecords + " records: " + (DateTime.Now - start)); db.Close(); } }
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(); }