voldemort.store.readonly.checksum
Class CheckSum

java.lang.Object
  voldemort.store.readonly.checksum.CheckSum

Direct Known Subclasses:

Adler32CheckSum, CRC32CheckSum, MD5CheckSum

public abstract class CheckSum
extends java.lang.Object

Nested Class Summary

static class

CheckSum.CheckSumType

Constructor Summary

CheckSum()

Method Summary

static int	checkSumLength(CheckSum.CheckSumType type)
static CheckSum.CheckSumType	fromString(java.lang.String input)
abstract byte[]	getCheckSum() Get the checkSum of the buffer till now, after which buffer is reset
static CheckSum	getInstance(CheckSum.CheckSumType type)
static CheckSum	getInstance(java.lang.String algorithm)
abstract void	reset() Reset the checksum generator
static java.lang.String	toString(CheckSum.CheckSumType type)
void	update(byte[] input) Update the checksum buffer to include input
abstract void	update(byte[] input, int startIndex, int length) Update the checksum buffer to include input with startIndex and length.
void	update(int number) Update the underlying buffer using the integer
void	update(short number) Update the underlying buffer using the short
byte[]	updateAndGetCheckSum(byte[] input, int startIndex, int length) Update and get checksum + reset the digest for next use

Methods inherited from class java.lang.Object

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

Constructor Detail

CheckSum

public CheckSum()

Method Detail

update

public abstract void update(byte[] input,
                            int startIndex,
                            int length)

Update the checksum buffer to include input with startIndex and length. Following calls to multiple 'update's you need to call 'getCheckSum' which will reset the buffer as well

Parameters:

input -

startIndex -

length -

getCheckSum

public abstract byte[] getCheckSum()

Get the checkSum of the buffer till now, after which buffer is reset

reset

public abstract void reset()

Reset the checksum generator

updateAndGetCheckSum

public byte[] updateAndGetCheckSum(byte[] input,
                                   int startIndex,
                                   int length)

Update and get checksum + reset the digest for next use

Parameters:

input - The input byte array

startIndex - The index to start reading from

length - The number of bytes to read

Returns:

Returns the checksum byte array

update

public void update(int number)

Update the underlying buffer using the integer

Parameters:

number - number to be stored in checksum buffer

update

public void update(short number)

Update the underlying buffer using the short

Parameters:

number - number to be stored in checksum buffer

update

public void update(byte[] input)

Update the checksum buffer to include input

Parameters:

input - bytes added to the buffer

getInstance

public static CheckSum getInstance(CheckSum.CheckSumType type)

checkSumLength

public static int checkSumLength(CheckSum.CheckSumType type)

toString

public static java.lang.String toString(CheckSum.CheckSumType type)

fromString

public static CheckSum.CheckSumType fromString(java.lang.String input)

getInstance

public static CheckSum getInstance(java.lang.String algorithm)