org.jboss.cache.optimistic
Class DefaultDataVersion

java.lang.Object
  org.jboss.cache.optimistic.DefaultDataVersion

All Implemented Interfaces:

java.io.Serializable, DataVersion

public class DefaultDataVersion
extends java.lang.Object
implements DataVersion

The default implementation of a DataVersion, uses a long to compare versions. This class is immutable.

Author:

Manik Surtani (manik@jboss.org)

See Also:

Serialized Form

Field Summary

static DataVersion

ZERO Version zero.

Constructor Summary

DefaultDataVersion()
Deprecated. use ZERO constant

DefaultDataVersion(long version)
Constructs with a version number.

Method Summary

boolean	equals(java.lang.Object other)
int	hashCode()
DataVersion	increment() Returns a new DataVersion with a newer version number.
boolean	newerThan(DataVersion other) Returns true if this is a newer version than other.
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

ZERO

public static final DataVersion ZERO

Version zero. Assign this as the first version to your data.

Constructor Detail

DefaultDataVersion

public DefaultDataVersion()

Deprecated. use ZERO constant

Constructs with version 0.

DefaultDataVersion

public DefaultDataVersion(long version)

Constructs with a version number.

Method Detail

increment

public DataVersion increment()

Returns a new DataVersion with a newer version number.

newerThan

public boolean newerThan(DataVersion other)

Description copied from interface: DataVersion

Returns true if this is a newer version than other.

Specified by:

newerThan in interface DataVersion

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

equals

public boolean equals(java.lang.Object other)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object