com.scaleout.client.caching

Class VersionToken

java.lang.Object

com.scaleout.client.caching.VersionToken

public abstract class VersionToken
extends java.lang.Object

The VersionToken is an identifier for the version of an object stored in the ScaleOut in-memory data grid.

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	_hasValue Flag to indicate if this version token has a value.
protected int	_version The value of this version token.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	VersionToken() Default constructor.

Method Summary

Modifier and Type	Method and Description
static VersionToken	emptyVersionToken() Retrieve an empty version token.
boolean	hasValue() Check to see if this VersionToken has a value.
int	version() Retrieve the version number of this VersionToken

Methods inherited from class java.lang.Object

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

Field Detail

_version

protected int _version

The value of this version token.

_hasValue

protected boolean _hasValue

Flag to indicate if this version token has a value.

Constructor Detail

VersionToken

protected VersionToken()

Default constructor.

Method Detail

version

public int version()

Retrieve the version number of this VersionToken

Returns:

the version number

hasValue

public boolean hasValue()

Check to see if this VersionToken has a value.

Returns:

true if the VersionToken has a value, false if this VersionToken has no value

emptyVersionToken

public static VersionToken emptyVersionToken()

Retrieve an empty version token.

Returns:

an empty version token where hasValue() will always return false.