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);
}
}