Package org.infinispan.container.versioning

Class NumericVersionGenerator

java.lang.Object

org.infinispan.container.versioning.NumericVersionGenerator

All Implemented Interfaces:

VersionGenerator

public class NumericVersionGenerator
extends Object
implements VersionGenerator

Generates unique numeric versions for both local and clustered environments. When used on clustered caches, node information is used to guarantee versions are unique cluster-wide. If the cache is configured to be local, the version generated is based around an atomic counter. On the contrary, if the cache is clustered, the generated version is composed of: [view id (2 bytes)][rank (2 bytes)][version counter (4 bytes)], where rank refers to the position of this node within the view.

Since:

5.3

Author:

Galder Zamarreño

Constructor Summary

Constructors

Constructor	Description
NumericVersionGenerator()

Method Summary

Modifier and Type	Method	Description
IncrementableEntryVersion	generateNew()	Generates a new entry version
IncrementableEntryVersion	increment(IncrementableEntryVersion initialVersion)
IncrementableEntryVersion	nonExistingVersion()
void	start()

Methods inherited from class java.lang.Object

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

Constructor Details

NumericVersionGenerator

public NumericVersionGenerator()

Method Details

start

public void start()

generateNew

public IncrementableEntryVersion generateNew()

Description copied from interface: VersionGenerator

Generates a new entry version

Specified by:

generateNew in interface VersionGenerator

Returns:

a new entry version

increment

public IncrementableEntryVersion increment(IncrementableEntryVersion initialVersion)

Specified by:

increment in interface VersionGenerator

nonExistingVersion

public IncrementableEntryVersion nonExistingVersion()

Specified by:

nonExistingVersion in interface VersionGenerator