Class Murmur3F

java.lang.Object

org.greenrobot.essentials.hash.Murmur3F

All Implemented Interfaces:

Checksum, Checksum128

public class Murmur3F
extends Object
implements Checksum128

Murmur3F (MurmurHash3_x64_128)

Field Summary

Fields

Modifier and Type	Field	Description
private static final long	C1
private static final long	C2
private boolean	finished
private long	finishedH1
private long	finishedH2
private long	h1
private long	h2
private int	length
private long	partialK1
private long	partialK2
private int	partialPos
private static PrimitiveArrayUtils	primitiveArrayUtils
private final long	seed

Constructor Summary

Constructors

Constructor	Description
Murmur3F()
Murmur3F(int seed)

Method Summary

Modifier and Type	Method	Description
private void	applyKs(long k1, long k2)
private void	checkFinished()
private long	fmix64(long k)
private String	getPaddedHexString(long value)
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 Object

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

Methods inherited from interface Checksum

update

Field Details

primitiveArrayUtils

private static PrimitiveArrayUtils primitiveArrayUtils

C1

private static final long C1

See Also:

• Constant Field Values

C2

private static final long C2

See Also:

• Constant Field Values

seed

private final long seed

h1

private long h1

h2

private long h2

length

private int length

partialPos

private int partialPos

partialK1

private long partialK1

partialK2

private long partialK2

finished

private boolean finished

finishedH1

private long finishedH1

finishedH2

private long finishedH2

Constructor Details

Murmur3F

public Murmur3F()

Murmur3F

public Murmur3F(int seed)

Method Details

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)

Specified by:

update in interface Checksum

update

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

Specified by:

update in interface Checksum

applyKs

private void applyKs(long k1,
 long k2)

checkFinished

private void checkFinished()

fmix64

private long fmix64(long k)

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

getPaddedHexString

private String getPaddedHexString(long value)

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