Package org.opends.server.replication.plugin

Class GenerationIdChecksum

java.lang.Object

org.opends.server.replication.plugin.GenerationIdChecksum

All Implemented Interfaces:

Checksum

public final class GenerationIdChecksum
extends Object
implements Checksum

This class computes the generation id used for a replication domain. It is a checksum based on some special entries/attributes of the domain. The written stream to this class is the LDIF representation of the entries we are interested in for computing the generation id. The current implementation simply does the sum of each written byte and stores the value in a long. We do not care about the cycling long as the probability of 2 data sets having the same checksum is very low.

Constructor Summary

Constructors

Constructor	Description
GenerationIdChecksum()

Method Summary

Modifier and Type	Method	Description
long	getValue()
void	reset()
void	update(byte[] b, int off, int len)
void	update(int b)

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.zip.Checksum

update, update

Constructor Details

GenerationIdChecksum

public GenerationIdChecksum()

Method Details

update

public void update(int b)

Specified by:

update in interface Checksum

update

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

Specified by:

update in interface Checksum

getValue

public long getValue()

Specified by:

getValue in interface Checksum

reset

public void reset()

Specified by:

reset in interface Checksum