Package com.google.common.hash

Class Murmur3_32HashFunction.Murmur3_32Hasher

java.lang.Object

com.google.common.hash.AbstractHasher

com.google.common.hash.Murmur3_32HashFunction.Murmur3_32Hasher

All Implemented Interfaces:

Hasher, PrimitiveSink

Enclosing class:

Murmur3_32HashFunction

private static final class Murmur3_32HashFunction.Murmur3_32Hasher
extends AbstractHasher

Field Summary

Fields

Modifier and Type	Field	Description
private long	buffer
private int	h1
private boolean	isDone
private int	length
private int	shift

Constructor Summary

Constructors

Constructor	Description
Murmur3_32Hasher(int seed)

Method Summary

Modifier and Type	Method	Description
HashCode	hash()	Computes a hash code based on the data that have been provided to this hasher.
Hasher	putByte(byte b)	Puts a byte into this sink.
Hasher	putBytes(byte[] bytes, int off, int len)	Puts a chunk of an array of bytes into this sink.
Hasher	putBytes(java.nio.ByteBuffer buffer)	Puts the remaining bytes of a byte buffer into this sink.
Hasher	putChar(char c)	Puts a character into this sink.
Hasher	putInt(int i)	Puts an int into this sink.
Hasher	putLong(long l)	Puts a long into this sink.
Hasher	putString(java.lang.CharSequence input, java.nio.charset.Charset charset)	Equivalent to putBytes(charSequence.toString().getBytes(charset)).
private void	update(int nBytes, long update)

Methods inherited from class com.google.common.hash.AbstractHasher

putBoolean, putBytes, putDouble, putFloat, putObject, putShort, putUnencodedChars

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.google.common.hash.Hasher

hashCode

Field Detail

h1

private int h1

buffer

private long buffer

shift

private int shift

length

private int length

isDone

private boolean isDone

Constructor Detail

Murmur3_32Hasher

Murmur3_32Hasher(int seed)

Method Detail

update

private void update(int nBytes,
                    long update)

putByte

public Hasher putByte(byte b)

Description copied from interface: PrimitiveSink

Puts a byte into this sink.

Parameters:

b - a byte

Returns:

this instance

putBytes

public Hasher putBytes(byte[] bytes,
                       int off,
                       int len)

Description copied from interface: PrimitiveSink

Puts a chunk of an array of bytes into this sink. bytes[off] is the first byte written, bytes[off + len - 1] is the last.

Specified by:

putBytes in interface Hasher

Specified by:

putBytes in interface PrimitiveSink

Overrides:

putBytes in class AbstractHasher

Parameters:

bytes - a byte array

off - the start offset in the array

len - the number of bytes to write

Returns:

this instance

putBytes

public Hasher putBytes(java.nio.ByteBuffer buffer)

Description copied from interface: PrimitiveSink

Puts the remaining bytes of a byte buffer into this sink. bytes.position() is the first byte written, bytes.limit() - 1 is the last. The position of the buffer will be equal to the limit when this method returns.

Specified by:

putBytes in interface Hasher

Specified by:

putBytes in interface PrimitiveSink

Overrides:

putBytes in class AbstractHasher

Parameters:

buffer - a byte buffer

Returns:

this instance

putInt

public Hasher putInt(int i)

Description copied from interface: PrimitiveSink

Puts an int into this sink.

Specified by:

putInt in interface Hasher

Specified by:

putInt in interface PrimitiveSink

Overrides:

putInt in class AbstractHasher

putLong

public Hasher putLong(long l)

Description copied from interface: PrimitiveSink

Puts a long into this sink.

Specified by:

putLong in interface Hasher

Specified by:

putLong in interface PrimitiveSink

Overrides:

putLong in class AbstractHasher

putChar

public Hasher putChar(char c)

Description copied from interface: PrimitiveSink

Puts a character into this sink.

Specified by:

putChar in interface Hasher

Specified by:

putChar in interface PrimitiveSink

Overrides:

putChar in class AbstractHasher

putString

public Hasher putString(java.lang.CharSequence input,
                        java.nio.charset.Charset charset)

Description copied from interface: Hasher

Equivalent to putBytes(charSequence.toString().getBytes(charset)).

Warning: This method, which reencodes the input before hashing it, is useful only for cross-language compatibility. For other use cases, prefer Hasher.putUnencodedChars(java.lang.CharSequence), which is faster, produces the same output across Java releases, and hashes every char in the input, even if some are invalid.

Specified by:

putString in interface Hasher

Specified by:

putString in interface PrimitiveSink

Overrides:

putString in class AbstractHasher

hash

public HashCode hash()

Description copied from interface: Hasher

Computes a hash code based on the data that have been provided to this hasher. The result is unspecified if this method is called more than once on the same instance.