/// <summary>
/// The long hashcode is computed by using MD5 in order to prevent problems with poorly
/// implemented predicate object hashcodes.
/// </summary>
/// <returns>The long hashcode of the predicate.</returns>
public override long GetLongHashCode()
{
int hashCode = GetType().GetHashCode() ^ Value.GetHashCode();
// bug #1086498, solved by mwherman2000
byte[] dataArray = new byte[] { (byte)(hashCode & 0xFF),
(byte)((hashCode >> 8) & 0xFF),
(byte)((hashCode >> 16) & 0xFF),
(byte)((hashCode >> 24) & 0xFF) };
byte[] result = HA.ComputeHash(dataArray);
long longHashCode = 0;
for (int i = 0; i < 16; i += 8)
{
longHashCode ^= ((long)result[i] |
((long)result[i + 1] << 8) |
((long)result[i + 2] << 16) |
((long)result[i + 3] << 24) |
((long)result[i + 4] << 32) |
((long)result[i + 5] << 40) |
((long)result[i + 6] << 48) |
((long)result[i + 7] << 56));
}
return(longHashCode);
}
protected virtual byte[] GetKey(string key)
{
return(HA.ComputeHash(key.FromUTF8String()));
}