public static long HashToLong(string data)
{
uint hash1;
uint hash2;
PerfectHash.ComputeHash(ASCIIEncoding.ASCII.GetBytes(data.ToUpper(CultureInfo.InvariantCulture)), seed1: 0, seed2: 0, hash1: out hash1, hash2: out hash2);
long hashedValue = ((long)hash1 << 32) | (long)hash2;
return(hashedValue);
}
public static short HashToShort(string data)
{
uint hash1;
uint hash2;
string upper = data.ToUpper(CultureInfo.InvariantCulture);
PerfectHash.ComputeHash(ASCIIEncoding.ASCII.GetBytes(upper), seed1: 0, seed2: 0, hash1: out hash1, hash2: out hash2);
long hashedValue = hash1 ^ hash2;
return((short)hashedValue);
}
public static long HashToLong(string data)
{
uint hash1;
uint hash2;
#if NETSTANDARD1_3
string upper = data.ToUpper();
#else
string upper = data.ToUpper(CultureInfo.InvariantCulture);
#endif
PerfectHash.ComputeHash(ASCIIEncoding.ASCII.GetBytes(upper), seed1: 0, seed2: 0, hash1: out hash1, hash2: out hash2);
long hashedValue = ((long)hash1 << 32) | (long)hash2;
return(hashedValue);
}
public static short HashToShort(string data)
{
uint hash1;
uint hash2;
#if WINDOWS_UWP || NETSTANDARD1_3
string upper = data.ToUpper();
#else
string upper = data.ToUpper(CultureInfo.InvariantCulture);
#endif
PerfectHash.ComputeHash(ASCIIEncoding.ASCII.GetBytes(upper), seed1: 0, seed2: 0, hash1: out hash1, hash2: out hash2);
long hashedValue = hash1 ^ hash2;
return((short)hashedValue);
}
public static long HashToLong(string data)
{
if (data == null)
{
throw new ArgumentNullException(nameof(data), "The data string cannot be null.");
}
uint hash1;
uint hash2;
string upper = data.ToUpper(CultureInfo.InvariantCulture);
PerfectHash.ComputeHash(ASCIIEncoding.ASCII.GetBytes(upper), seed1: 0, seed2: 0, hash1: out hash1, hash2: out hash2);
long hashedValue = ((long)hash1 << 32) | (long)hash2;
return(hashedValue);
}
public static string ResolveToPartition(string partitionKey, int partitionCount)
{
if (string.IsNullOrWhiteSpace(partitionKey))
{
throw new ArgumentNullException(nameof(partitionKey));
}
if (partitionCount < 1 || partitionCount > DefaultLogicalPartitionCount)
{
throw new ArgumentOutOfRangeException(nameof(partitionCount), partitionCount, string.Format(CultureInfo.InvariantCulture, "Should be between {0} and {1}", 1, DefaultLogicalPartitionCount));
}
short logicalPartition = Math.Abs((short)(PerfectHash.HashToShort(partitionKey) % DefaultLogicalPartitionCount));
int shortRangeWidth = (int)Math.Floor((decimal)DefaultLogicalPartitionCount / (decimal)(partitionCount));
int remainingLogicalPartitions = DefaultLogicalPartitionCount - (partitionCount * shortRangeWidth);
int largeRangeWidth = shortRangeWidth + 1;
int largeRangesLogicalPartitions = largeRangeWidth * remainingLogicalPartitions;
int partitionIndex = logicalPartition < largeRangesLogicalPartitions
? logicalPartition / largeRangeWidth
: remainingLogicalPartitions + ((logicalPartition - largeRangesLogicalPartitions) / shortRangeWidth);
return(partitionIndex.ToString(NumberFormatInfo.InvariantInfo));
}
