org.infinispan.commons.hash
Class MurmurHash2
java.lang.Object
org.infinispan.commons.hash.MurmurHash2
- All Implemented Interfaces:
- Hash
@ThreadSafe
@Immutable
public class MurmurHash2
- extends Object
- implements Hash
An implementation of Austin Appleby's MurmurHash2.0 algorithm, as documented on his website.
This implementation is based on the slower, endian-neutral version of the algorithm as documented on the site,
ported from Austin Appleby's original C++ version MurmurHashNeutral2.cpp.
Other implementations are documented on Wikipedia's MurmurHash page.
- Version:
- 4.1
- Author:
- Manik Surtani
- See Also:
- MurmurHash website,
MurmurHash entry on Wikipedia,
MurmurHash2Compat
Method Summary |
boolean |
equals(Object other)
|
int |
hash(byte[] payload)
Hashes a byte array efficiently. |
int |
hash(int hashcode)
An incremental version of the hash function, that spreads a pre-calculated
hash code, such as one derived from Object.hashCode() . |
int |
hash(Object o)
A helper that calculates the hashcode of an object, choosing the optimal
mechanism of hash calculation after considering the type of the object
(byte array, String or Object). |
String |
toString()
|
MurmurHash2
public MurmurHash2()
hash
public final int hash(byte[] payload)
- Description copied from interface:
Hash
- Hashes a byte array efficiently.
- Specified by:
hash
in interface Hash
- Parameters:
payload
- a byte array to hash
- Returns:
- a hash code for the byte array
hash
public final int hash(int hashcode)
- Description copied from interface:
Hash
- An incremental version of the hash function, that spreads a pre-calculated
hash code, such as one derived from
Object.hashCode()
.
- Specified by:
hash
in interface Hash
- Parameters:
hashcode
- an object's hashcode
- Returns:
- a spread and hashed version of the hashcode
hash
public final int hash(Object o)
- Description copied from interface:
Hash
- A helper that calculates the hashcode of an object, choosing the optimal
mechanism of hash calculation after considering the type of the object
(byte array, String or Object).
- Specified by:
hash
in interface Hash
- Parameters:
o
- object to hash
- Returns:
- a hashcode
equals
public boolean equals(Object other)
- Overrides:
equals
in class Object
toString
public String toString()
- Overrides:
toString
in class Object
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