net.sf.ehcache.transaction.xa
Class EhcacheXAStoreImpl.VersionTable

java.lang.Object
  net.sf.ehcache.transaction.xa.EhcacheXAStoreImpl.VersionTable

Enclosing class:

EhcacheXAStoreImpl

public static class EhcacheXAStoreImpl.VersionTable
extends Object

A table containing element version information

Field Summary

protected ConcurrentMap<Object,EhcacheXAStoreImpl.Version>

versionStore The data underlying structure for the version info for Key (where the version is the Long)

Constructor Summary

EhcacheXAStoreImpl.VersionTable()

Method Summary

void	checkin(Object key, Xid xid, boolean readOnly) Increment versioning information of a mutated and stored information to the store
long	checkout(Object key, Xid xid) Track a version for an element, potentially adding it to the store
boolean	valid(Object key, long currentVersionNumber) Checks whether a version is still up to date

Methods inherited from class java.lang.Object

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

Field Detail

versionStore

protected final ConcurrentMap<Object,EhcacheXAStoreImpl.Version> versionStore

The data underlying structure for the version info for Key (where the version is the Long)

Constructor Detail

EhcacheXAStoreImpl.VersionTable

public EhcacheXAStoreImpl.VersionTable()

Method Detail

valid

public boolean valid(Object key,
                     long currentVersionNumber)

Checks whether a version is still up to date

Parameters:

key - the key to check for

currentVersionNumber - the version checked out

Returns:

true if the version is still up to date

checkout

public long checkout(Object key,
                     Xid xid)

Track a version for an element, potentially adding it to the store

Parameters:

key - the key matching the element in the store

xid - the Xid of the Transaction

Returns:

the version

checkin

public void checkin(Object key,
                    Xid xid,
                    boolean readOnly)

Increment versioning information of a mutated and stored information to the store

Parameters:

key - the key matching the element in the store

xid - the Xid of the Transaction

readOnly - whether the element was mutated in the Store