protected override TValue TryGetInternal(TKey key)
{
var val = snapshot.GetValue(new byte[] { }, (new byte[] { prefix }).Concat(key.ToArray()).ToArray())?.value;
if (val == null || val.Length == 0)
{
return(null);
}
return(val.AsSerializable <TValue>());
}
public static IEnumerable <T> Find <T>(this DB db, LTISnapshot snapshot, Slice prefix, Func <Slice, Slice, T> resultSelector)
{
LTIKeyIterator it = snapshot.CreateKeyIterator(new byte[] { }, prefix.buffer);
{
while (it.MoveNext())
{
byte[] key = it.Current;
byte[] y = prefix.ToArray();
if (key.Length < y.Length)
{
break;
}
if (!key.Take(y.Length).SequenceEqual(y))
{
break;
}
byte[] value = snapshot.GetValue(new byte[] { }, key).value;
yield return(resultSelector(new Slice(key), new Slice(value)));
}
}
}