HashAlgorithm (xmemcached 2.4.0 API)

java.lang.Object
- java.lang.Enum<HashAlgorithm>
- - net.rubyeye.xmemcached.HashAlgorithm

All Implemented Interfaces:

Serializable, Comparable<HashAlgorithm>
```
public enum HashAlgorithm
extends Enum<HashAlgorithm>
```
Known hashing algorithms for locating a server for a key. Note that all hash algorithms return 64-bits of hash, but only the lower 32-bits are significant. This allows a positive 32-bit number to be returned for all cases.

Enum Constant Summary

Enum Constants
Enum Constant and Description
`CRC32_HASH` CRC32_HASH as used by the perl API.
`ELECTION_HASH`
`ELF_HASH`
`FNV1_32_HASH` 32-bit FNV1.
`FNV1_64_HASH` FNV hashes are designed to be fast while maintaining a low collision rate.
`FNV1A_32_HASH` 32-bit FNV1a.
`FNV1A_64_HASH` Variation of FNV.
`KETAMA_HASH` MD5-based hash algorithm used by ketama.
`LUA_HASH` From lua source,it is used for long key
`MYSQL_HASH` From mysql source
`NATIVE_HASH` Native hash (String.hashCode()).
`ONE_AT_A_TIME` The Jenkins One-at-a-time hash ,please see http://www.burtleburtle.net/bob/hash/doobs.html
`RS_HASH`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`static byte[]`	`computeMd5(String k)` Get the md5 of the given key.
`long`	`hash(String k)` Compute the hash for the given key.
`static HashAlgorithm`	`valueOf(String name)` Returns the enum constant of this type with the specified name.
`static HashAlgorithm[]`	`values()` Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum
clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait

- Enum Constant Detail
  - NATIVE_HASH
```
public static final HashAlgorithm NATIVE_HASH
```
    Native hash (String.hashCode()).
  - CRC32_HASH
```
public static final HashAlgorithm CRC32_HASH
```
    CRC32_HASH as used by the perl API. This will be more consistent both across multiple API users as well as java versions, but is mostly likely significantly slower.
  - FNV1_64_HASH
```
public static final HashAlgorithm FNV1_64_HASH
```
    FNV hashes are designed to be fast while maintaining a low collision rate. The FNV speed allows one to quickly hash lots of data while maintaining a reasonable collision rate.
    
    See Also:
    
    http://www.isthe.com/chongo/tech/comp/fnv/, http://en.wikipedia.org/wiki/Fowler_Noll_Vo_hash
  - FNV1A_64_HASH
```
public static final HashAlgorithm FNV1A_64_HASH
```
    Variation of FNV.
  - FNV1_32_HASH
```
public static final HashAlgorithm FNV1_32_HASH
```
    32-bit FNV1.
  - FNV1A_32_HASH
```
public static final HashAlgorithm FNV1A_32_HASH
```
    32-bit FNV1a.
  - KETAMA_HASH
```
public static final HashAlgorithm KETAMA_HASH
```
    MD5-based hash algorithm used by ketama.
  - MYSQL_HASH
```
public static final HashAlgorithm MYSQL_HASH
```
    From mysql source
  - ELF_HASH
```
public static final HashAlgorithm ELF_HASH
```
  - RS_HASH
```
public static final HashAlgorithm RS_HASH
```
  - LUA_HASH
```
public static final HashAlgorithm LUA_HASH
```
    From lua source,it is used for long key
  - ELECTION_HASH
```
public static final HashAlgorithm ELECTION_HASH
```
  - ONE_AT_A_TIME
```
public static final HashAlgorithm ONE_AT_A_TIME
```
    The Jenkins One-at-a-time hash ,please see http://www.burtleburtle.net/bob/hash/doobs.html
- Method Detail
  - values
```
public static HashAlgorithm[] values()
```
    Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:
```
for (HashAlgorithm c : HashAlgorithm.values())
    System.out.println(c);
```
    Returns:
    
    an array containing the constants of this enum type, in the order they are declared
  - valueOf
```
public static HashAlgorithm valueOf(String name)
```
    Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
    
    Parameters:
    
    name - the name of the enum constant to be returned.
    
    Returns:
    
    the enum constant with the specified name
    
    Throws:
    
    IllegalArgumentException - if this enum type has no constant with the specified name
    
    NullPointerException - if the argument is null
  - hash
```
public long hash(String k)
```
    Compute the hash for the given key.
    
    Returns:
    
    a positive integer hash
  - computeMd5
```
public static byte[] computeMd5(String k)
```
    Get the md5 of the given key.

Enum HashAlgorithm

Enum Constant Summary

Method Summary

Methods inherited from class java.lang.Enum

Methods inherited from class java.lang.Object

Enum Constant Detail

NATIVE_HASH

CRC32_HASH

FNV1_64_HASH

FNV1A_64_HASH

FNV1_32_HASH

FNV1A_32_HASH

KETAMA_HASH

MYSQL_HASH

ELF_HASH

RS_HASH

LUA_HASH

ELECTION_HASH

ONE_AT_A_TIME

Method Detail

values

valueOf

hash

computeMd5