eu.etrap.medusa.hash.function

Class CRC32HashFunctionImpl

java.lang.Object

eu.etrap.medusa.config.ClassConfig

eu.etrap.medusa.hash.function.AbstractHashFunction

eu.etrap.medusa.hash.function.CRC32HashFunctionImpl

All Implemented Interfaces:

HashFunction

public class CRC32HashFunctionImpl
extends AbstractHashFunction

Author:

development

Field Summary

Fields

Modifier and Type	Field and Description
private byte[]	aryKeys
private int	BLOCKS
(package private) int	intDataSetsPerBucket
private boolean	isFirstHashValue
(package private) long	longHashValue
private java.util.zip.CRC32	objCRC32

Fields inherited from class eu.etrap.medusa.hash.function.AbstractHashFunction

calcBucketID, calcBucketIDSize, calcHashValue, calcHashValueSize

Fields inherited from class eu.etrap.medusa.config.ClassConfig

BOOLEAN_DEFAULT, DOUBLE_DEFAULT, FORMAT_IMPL, INT_DEFAULT, LONG_DEFAULT, objConf, objConfCategory, objFormat, strBackupConfFile, STRING_DEFAULT

Constructor Summary

Constructors

Constructor and Description
CRC32HashFunctionImpl() Creates a new instance of CRC32HashFunctionImpl

Method Summary

Modifier and Type	Method and Description
int	calcBucketID(byte[] aryKeys)
int	calcHashValue()
void	init(java.util.Properties objProperties)

Methods inherited from class eu.etrap.medusa.hash.function.AbstractHashFunction

calcBufferSize, calcKeySuffixes, clear, getInt, getIntAsByteArray, getLongAsByteArray, getOriginalHashValue, getProperties, printBitTable

Methods inherited from class eu.etrap.medusa.config.ClassConfig

config, getConfiguration, getGlobalProperty, getProperty, getProperty, getStatisticsProperty, loadFormatImpl, selfconfig, setGlobalProperty, setProperty, setProperty, setStatisticsProperty, setStatisticsProperty

Methods inherited from class java.lang.Object

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

Field Detail

BLOCKS

private int BLOCKS

objCRC32

private java.util.zip.CRC32 objCRC32

isFirstHashValue

private boolean isFirstHashValue

aryKeys

private byte[] aryKeys

longHashValue

long longHashValue

intDataSetsPerBucket

int intDataSetsPerBucket

Constructor Detail

CRC32HashFunctionImpl

public CRC32HashFunctionImpl()

Creates a new instance of CRC32HashFunctionImpl

Method Detail

init

public void init(java.util.Properties objProperties)
          throws ConfigurationException,
                 HashException

Specified by:

init in interface HashFunction

Overrides:

init in class AbstractHashFunction

Throws:

ConfigurationException

HashException

calcBucketID

public int calcBucketID(byte[] aryKeys)
                 throws HashException

Specified by:

calcBucketID in interface HashFunction

Overrides:

calcBucketID in class AbstractHashFunction

Throws:

HashException

calcHashValue

public int calcHashValue()
                  throws HashException

Specified by:

calcHashValue in interface HashFunction

Overrides:

calcHashValue in class AbstractHashFunction

Throws:

HashException