HashAlgorithm (xmemcached 1.4.3 API)

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

所有已实现的接口:

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.

枚举常量概要

枚举常量
枚举常量和说明
`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`

方法概要

方法
限定符和类型	方法和说明
`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)` 返回带有指定名称的该类型的枚举常量。
`static HashAlgorithm[]`	`values()` 按照声明该枚举类型的常量的顺序, 返回包含这些常量的数组。

从类继承的方法 java.lang.Enum
clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

从类继承的方法 java.lang.Object
getClass, notify, notifyAll, wait, wait, wait

- 枚举常量详细资料
  - 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.
    
    另请参阅:
    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
- 方法详细资料
  - values
```
public static HashAlgorithm[] values()
```
    按照声明该枚举类型的常量的顺序, 返回包含这些常量的数组。该方法可用于迭代常量, 如下所示:
```
for (HashAlgorithm c : HashAlgorithm.values())
    System.out.println(c);
```
  - valueOf
```
public static HashAlgorithm valueOf(String name)
```
    返回带有指定名称的该类型的枚举常量。字符串必须与用于声明该类型的枚举常量的标识符完全匹配。(不允许有多余的空格字符。)
    
    参数:
    name - 要返回的枚举常量的名称。
  - hash
```
public long hash(String k)
```
    Compute the hash for the given key.
    
    返回:
    a positive integer hash
  - computeMd5
```
public static byte[] computeMd5(String k)
```
    Get the md5 of the given key.

枚举 HashAlgorithm

枚举常量概要

方法概要

从类继承的方法 java.lang.Enum

从类继承的方法 java.lang.Object

枚举常量详细资料

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

方法详细资料

values

valueOf

hash

computeMd5