com.google.common.hash

Class ChecksumHashFunction

java.lang.Object

com.google.common.hash.AbstractStreamingHashFunction

com.google.common.hash.ChecksumHashFunction

All Implemented Interfaces:

HashFunction, java.io.Serializable

final class ChecksumHashFunction
extends AbstractStreamingHashFunction
implements java.io.Serializable

HashFunction adapter for Checksum instances.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private class	ChecksumHashFunction.ChecksumHasher Hasher that updates a checksum.

Nested classes/interfaces inherited from class com.google.common.hash.AbstractStreamingHashFunction

AbstractStreamingHashFunction.AbstractStreamingHasher

Field Summary

Fields

Modifier and Type	Field and Description
private int	bits
private Supplier<? extends java.util.zip.Checksum>	checksumSupplier
private static long	serialVersionUID
private java.lang.String	toString

Constructor Summary

Constructors

Constructor and Description
ChecksumHashFunction(Supplier<? extends java.util.zip.Checksum> checksumSupplier, int bits, java.lang.String toString)

Method Summary

Modifier and Type	Method and Description
int	bits() Returns the number of bits (a multiple of 32) that each hash code produced by this hash function has.
Hasher	newHasher() Begins a new hash code computation by returning an initialized, stateful Hasher instance that is ready to receive data.
java.lang.String	toString()

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

hashBytes, hashBytes, hashInt, hashLong, hashObject, hashString, hashUnencodedChars, newHasher

Methods inherited from class java.lang.Object

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

Field Detail

checksumSupplier

private final Supplier<? extends java.util.zip.Checksum> checksumSupplier

bits

private final int bits

toString

private final java.lang.String toString

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

Constructor Detail

ChecksumHashFunction

ChecksumHashFunction(Supplier<? extends java.util.zip.Checksum> checksumSupplier,
                     int bits,
                     java.lang.String toString)

Method Detail

bits

public int bits()

Description copied from interface: HashFunction

Returns the number of bits (a multiple of 32) that each hash code produced by this hash function has.

Specified by:

bits in interface HashFunction

newHasher

public Hasher newHasher()

Description copied from interface: HashFunction

Begins a new hash code computation by returning an initialized, stateful Hasher instance that is ready to receive data. Example:

   

   HashFunction hf = Hashing.md5();
   HashCode hc = hf.newHasher()
       .putLong(id)
       .putBoolean(isActive)
       .hash();

Specified by:

newHasher in interface HashFunction

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object