org.jboss.cache.interceptors

Class PassivationInterceptor

java.lang.Object

org.jboss.cache.commands.AbstractVisitor

org.jboss.cache.interceptors.base.CommandInterceptor

org.jboss.cache.interceptors.base.JmxStatsCommandInterceptor

org.jboss.cache.interceptors.PassivationInterceptor

All Implemented Interfaces:

Visitor, JmxStatisticsExposer

Direct Known Subclasses:

LegacyPassivationInterceptor

public class PassivationInterceptor
extends JmxStatsCommandInterceptor

Writes evicted nodes back to the store on the way in through the CacheLoader, either before each method call (no TXs), or at TX commit.

Version:

$Id: PassivationInterceptor.java 8462 2011-08-14 23:11:17Z dereed $

Author:

{Hany Mesha}

Field Summary

Fields

Modifier and Type	Field and Description
protected CacheLoader	loader

Fields inherited from class org.jboss.cache.interceptors.base.CommandInterceptor

configuration, log, trace

Constructor Summary

Constructors

Constructor and Description
PassivationInterceptor()

Method Summary

Methods

Modifier and Type	Method and Description
Map<String,Object>	dumpStatistics() Returns a map of statistics.
long	getPassivations()
protected void	passivate(InvocationContext ctx, Fqn fqn)
void	resetStatistics() Resets statistics gathered.
void	setDependencies(Notifier notifier, CacheLoaderManager loaderManager)
Object	visitEvictFqnCommand(InvocationContext ctx, EvictCommand command) Notifies the cache instance listeners that the evicted node is about to be passivated and stores the evicted node and its attributes back to the store using the CacheLoader.

Methods inherited from class org.jboss.cache.interceptors.base.JmxStatsCommandInterceptor

checkStatisticsUsed, getStatisticsEnabled, setStatisticsEnabled

Methods inherited from class org.jboss.cache.interceptors.base.CommandInterceptor

getNext, handleDefault, hasNext, invokeNextInterceptor, setNext

Methods inherited from class org.jboss.cache.commands.AbstractVisitor

visitClearDataCommand, visitCollection, visitCommitCommand, visitCreateNodeCommand, visitExistsNodeCommand, visitGetChildrenNamesCommand, visitGetDataMapCommand, visitGetKeysCommand, visitGetKeyValueCommand, visitGetNodeCommand, visitGravitateDataCommand, visitInvalidateCommand, visitMoveCommand, visitOptimisticPrepareCommand, visitPrepareCommand, visitPutDataMapCommand, visitPutForExternalReadCommand, visitPutKeyValueCommand, visitRemoveKeyCommand, visitRemoveNodeCommand, visitRollbackCommand

Methods inherited from class java.lang.Object

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

Field Detail

loader

protected CacheLoader loader

Constructor Detail

PassivationInterceptor

public PassivationInterceptor()

Method Detail

setDependencies

public void setDependencies(Notifier notifier,
                   CacheLoaderManager loaderManager)

visitEvictFqnCommand

public Object visitEvictFqnCommand(InvocationContext ctx,
                          EvictCommand command)
                            throws Throwable

Notifies the cache instance listeners that the evicted node is about to be passivated and stores the evicted node and its attributes back to the store using the CacheLoader.

Specified by:

visitEvictFqnCommand in interface Visitor

Overrides:

visitEvictFqnCommand in class AbstractVisitor

Parameters:

ctx - invocation context

command - command to visit

Returns:

response from the visit

Throws:

Throwable - in the event of problems.

passivate

protected void passivate(InvocationContext ctx,
             Fqn fqn)
                  throws Throwable

Throws:

Throwable

resetStatistics

public void resetStatistics()

Description copied from class: JmxStatsCommandInterceptor

Resets statistics gathered. Is a no-op, and should be overridden if it is to be meaningful.

Specified by:

resetStatistics in interface JmxStatisticsExposer

Overrides:

resetStatistics in class JmxStatsCommandInterceptor

dumpStatistics

public Map<String,Object> dumpStatistics()

Description copied from class: JmxStatsCommandInterceptor

Returns a map of statistics. This is a default implementation which returns an empty map and should be overridden if it is to be meaningful.

Specified by:

dumpStatistics in interface JmxStatisticsExposer

Overrides:

dumpStatistics in class JmxStatsCommandInterceptor

Returns:

an empty map

getPassivations

public long getPassivations()