public void RemoveUpdatedValuesFromIndex2()
{
string path = Path.GetFullPath ("TestData\\RemoveUpdatedValuesFromIndex2");
var timer = new Stopwatch ();
using (var db = new KeyValueStore(path)) {
db.Truncate ();
int totalSize = 0;
db.Manifest.Logger = msg => Console.WriteLine (msg);
var indexed = new SortedDictionary<string, byte[]> ();
int num_items = 1000;
timer.Start ();
for (int i = 0; i < num_items; i++) {
indexed ["Mod"] = BitConverter.GetBytes (i % 100);
db.Set (BitConverter.GetBytes (i), BitConverter.GetBytes (i), indexed);
totalSize += 8 + 4;
}
timer.Stop ();
Console.WriteLine ("Wrote data (with indexing) at a throughput of {0} MB/s", (double)totalSize / timer.Elapsed.TotalSeconds / (1024.0 * 1024.0));
timer.Reset ();
timer.Start ();
var ctModZeros = db.Find ("Mod", BitConverter.GetBytes ((int)0)).Count ();
timer.Stop ();
Assert.AreEqual (10, ctModZeros);
Console.WriteLine ("Scanned index at a throughput of {0} items/s", (double)ctModZeros / timer.Elapsed.TotalSeconds);
}
// Open the index directly and see if the data is there
using (var db = new KeyValueStore(Path.Combine(path, "Mod"))) {
int num_vals = db.EnumerateFromKey (BitConverter.GetBytes ((int)0)).Count (pair => pair.Key.Take (4).All (b => b == 0));
Assert.AreEqual (10, num_vals);
}
// Re-open the main key-value store and update the value at 30
using (var db = new KeyValueStore(path)) {
var indexed = new SortedDictionary<string, byte[]> ();
indexed ["Mod"] = BitConverter.GetBytes (201 % 100);
db.Set (BitConverter.GetBytes (200), BitConverter.GetBytes (200), indexed);
// Clean the data from the index
db.RemoveFromIndex (BitConverter.GetBytes (200), new Dictionary<string, byte[]> { { "Mod", BitConverter.GetBytes(200 % 100) } });
}
// Open the index again directly and confirm that the lookup key is gone now as well
using (var db = new KeyValueStore(Path.Combine(path, "Mod"))) {
int num_vals = db.EnumerateFromKey (BitConverter.GetBytes ((int)0)).Count (pair => pair.Key.Take (4).All (b => b == 0));
Assert.AreEqual (9, num_vals);
}
}
public void LookupOldDataFromIndex()
{
string path = Path.GetFullPath ("TestData\\LookupOldDataFromIndex");
using (var db = new KeyValueStore(path)) {
db.Truncate ();
db.Manifest.Logger = msg => Console.WriteLine (msg);
db.Set (Encoding.UTF8.GetBytes ("KeyA"), Encoding.UTF8.GetBytes ("ValueA:1"), new Dictionary<string, byte[]> { { "Idx", Encoding.UTF8.GetBytes("1") } });
db.Set (Encoding.UTF8.GetBytes ("KeyB"), Encoding.UTF8.GetBytes ("ValueB:2"), new Dictionary<string, byte[]> { { "Idx", Encoding.UTF8.GetBytes("2") } });
db.Set (Encoding.UTF8.GetBytes ("KeyC"), Encoding.UTF8.GetBytes ("ValueC:3"), new Dictionary<string, byte[]> { { "Idx", Encoding.UTF8.GetBytes("3") } });
var lookupValue = db.Find ("Idx", Encoding.UTF8.GetBytes ("3")).Single ();
Assert.AreEqual ("ValueC:3", Encoding.UTF8.GetString (lookupValue.Value));
Assert.AreEqual ("KeyC", Encoding.UTF8.GetString (lookupValue.Key));
db.Set (Encoding.UTF8.GetBytes ("KeyC"), Encoding.UTF8.GetBytes ("ValueC:4"), new Dictionary<string, byte[]> { { "Idx", Encoding.UTF8.GetBytes("4") } });
lookupValue = db.Find ("Idx", Encoding.UTF8.GetBytes ("4")).Single ();
Assert.AreEqual ("ValueC:4", Encoding.UTF8.GetString (lookupValue.Value));
Assert.AreEqual ("KeyC", Encoding.UTF8.GetString (lookupValue.Key));
Assert.True (db.Find ("Idx", Encoding.UTF8.GetBytes ("3")).Any ());
db.RemoveFromIndex (Encoding.UTF8.GetBytes ("KeyC"), new Dictionary<string, byte[]> { { "Idx", Encoding.UTF8.GetBytes("3") } });
Assert.False (db.Find ("Idx", Encoding.UTF8.GetBytes ("3")).Any ());
}
}
