de.greenrobot.common.hash

Class Murmur3F

java.lang.Object

de.greenrobot.common.hash.Murmur3F

All Implemented Interfaces:

Checksum128, Checksum

public class Murmur3F
extends Object
implements Checksum128

Murmur3F (MurmurHash3_x64_128)

Constructor Summary

Constructors

Constructor and Description
Murmur3F()
Murmur3F(int seed)

Method Summary

Methods

Modifier and Type	Method and Description
long	getValue()
BigInteger	getValueBigInteger() Positive value.
byte[]	getValueBytesBigEndian() Big endian is the default in Java / network byte order.
byte[]	getValueBytesLittleEndian() Big endian is used by most machines natively.
String	getValueHexString() Padded with leading 0s to ensure length of 32.
long	getValueHigh() Returns the higher 64 bits of the 128 bit hash.
void	reset()
void	update(byte[] b)
void	update(byte[] b, int off, int len)
void	update(int b)
void	updateLongBE(long value) Consider updateLongLE(long) for better performance if you do not rely on big endian (BE) byte order.
void	updateLongLE(long value) Special update method to hash long values very efficiently using Java's native little endian (LE) byte order.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Murmur3F

public Murmur3F()

Murmur3F

public Murmur3F(int seed)

Method Detail

update

public void update(int b)

Specified by:

update in interface Checksum

updateLongLE

public void updateLongLE(long value)

Special update method to hash long values very efficiently using Java's native little endian (LE) byte order. Note, that you cannot mix this with other (previous) hash updates, because it only supports 8-bytes alignment.

updateLongBE

public void updateLongBE(long value)

Consider updateLongLE(long) for better performance if you do not rely on big endian (BE) byte order.

update

public void update(byte[] b)

update

public void update(byte[] b,
          int off,
          int len)

Specified by:

update in interface Checksum

getValue

public long getValue()

Specified by:

getValue in interface Checksum

getValueHigh

public long getValueHigh()

Returns the higher 64 bits of the 128 bit hash.

Specified by:

getValueHigh in interface Checksum128

getValueBigInteger

public BigInteger getValueBigInteger()

Positive value.

Specified by:

getValueBigInteger in interface Checksum128

getValueHexString

public String getValueHexString()

Padded with leading 0s to ensure length of 32.

Specified by:

getValueHexString in interface Checksum128

getValueBytesBigEndian

public byte[] getValueBytesBigEndian()

Description copied from interface: Checksum128

Big endian is the default in Java / network byte order.

Specified by:

getValueBytesBigEndian in interface Checksum128

getValueBytesLittleEndian

public byte[] getValueBytesLittleEndian()

Description copied from interface: Checksum128

Big endian is used by most machines natively.

Specified by:

getValueBytesLittleEndian in interface Checksum128

reset

public void reset()

Specified by:

reset in interface Checksum