org.jboss.cache.interceptors
Class ActivationInterceptor

java.lang.Object
  org.jboss.cache.commands.AbstractVisitor
      org.jboss.cache.interceptors.base.CommandInterceptor
          org.jboss.cache.interceptors.base.JmxStatsCommandInterceptor
              org.jboss.cache.interceptors.CacheLoaderInterceptor
                  org.jboss.cache.interceptors.ActivationInterceptor

All Implemented Interfaces:

Visitor, JmxStatisticsExposer

public class ActivationInterceptor
extends CacheLoaderInterceptor

Loads nodes that don't exist at the time of the call into memory from the CacheLoader. If the nodes were evicted earlier then we remove them from the cache loader after their attributes have been initialized and their children have been loaded in memory.

Version:

$Id: ActivationInterceptor.java 8169 2009-08-07 12:01:23Z manik.surtani@jboss.com $

Author:

{Hany Mesha}

Field Summary

protected static java.lang.Object	NULL
protected java.util.concurrent.ConcurrentHashMap	transactions List that we have registered for
protected javax.transaction.TransactionManager	txMgr

Fields inherited from class org.jboss.cache.interceptors.CacheLoaderInterceptor

dataContainer, helper, isActivation, loader, notifier, txTable, useCacheStore

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

configuration, log, trace

Constructor Summary

ActivationInterceptor()

Method Summary

java.util.Map<java.lang.String,java.lang.Object>	dumpStatistics() Returns a map of statistics.
long	getActivations()
void	injectTransactionManager(javax.transaction.TransactionManager txMgr)
protected void	recordNodeLoaded(InvocationContext ctx, Fqn fqn)
void	resetStatistics() Resets statistics gathered.
java.lang.Object	visitClearDataCommand(InvocationContext ctx, ClearDataCommand command) Visits a RemoveDataCommand.
java.lang.Object	visitGetChildrenNamesCommand(InvocationContext ctx, GetChildrenNamesCommand command) Visits a GetChildrenNamesCommand.
java.lang.Object	visitGetKeysCommand(InvocationContext ctx, GetKeysCommand command) Visits a GetKeysCommand.
java.lang.Object	visitGetKeyValueCommand(InvocationContext ctx, GetKeyValueCommand command) Visits a GetKeyValueCommand.
java.lang.Object	visitGetNodeCommand(InvocationContext ctx, GetNodeCommand command) Visits a GetNodeCommand.
java.lang.Object	visitMoveCommand(InvocationContext ctx, MoveCommand command) Visits a MoveCommand.
java.lang.Object	visitPutDataMapCommand(InvocationContext ctx, PutDataMapCommand command) Visits a PutDataMapCommand.
java.lang.Object	visitPutForExternalReadCommand(InvocationContext ctx, PutForExternalReadCommand command) Visits a PutForExternalReadCommand.
java.lang.Object	visitPutKeyValueCommand(InvocationContext ctx, PutKeyValueCommand command) Visits a PutKeyValueCommand.
java.lang.Object	visitRemoveKeyCommand(InvocationContext ctx, RemoveKeyCommand command) Visits a RemoveKeyCommand.
java.lang.Object	visitRemoveNodeCommand(InvocationContext ctx, RemoveNodeCommand command) Visits a RemoveNodeCommand.

Methods inherited from class org.jboss.cache.interceptors.CacheLoaderInterceptor

getCacheLoaderLoads, getCacheLoaderMisses, injectDependencies, startInterceptor, visitGetDataMapCommand, visitRollbackCommand

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

getStatisticsEnabled, checkStatisticsUsed, 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

visitCollection, visitCommitCommand, visitCreateNodeCommand, visitEvictFqnCommand, visitExistsNodeCommand, visitGravitateDataCommand, visitInvalidateCommand, visitOptimisticPrepareCommand, visitPrepareCommand

Methods inherited from class java.lang.Object

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

Field Detail

txMgr

protected javax.transaction.TransactionManager txMgr

transactions

protected java.util.concurrent.ConcurrentHashMap transactions

List that we have registered for

NULL

protected static final java.lang.Object NULL

Constructor Detail

ActivationInterceptor

public ActivationInterceptor()

Method Detail

injectTransactionManager

public void injectTransactionManager(javax.transaction.TransactionManager txMgr)

visitClearDataCommand

public java.lang.Object visitClearDataCommand(InvocationContext ctx,
                                              ClearDataCommand command)
                                       throws java.lang.Throwable

Description copied from interface: Visitor

Visits a RemoveDataCommand.

Specified by:

visitClearDataCommand in interface Visitor

Overrides:

visitClearDataCommand in class CacheLoaderInterceptor

Parameters:

ctx - invocation context

command - command to visit

Returns:

response from the visit

Throws:

java.lang.Throwable - in the event of problems.

visitRemoveNodeCommand

public java.lang.Object visitRemoveNodeCommand(InvocationContext ctx,
                                               RemoveNodeCommand command)
                                        throws java.lang.Throwable

Description copied from interface: Visitor

Visits a RemoveNodeCommand.

Specified by:

visitRemoveNodeCommand in interface Visitor

Overrides:

visitRemoveNodeCommand in class CacheLoaderInterceptor

Parameters:

ctx - invocation context

command - command to visit

Returns:

response from the visit

Throws:

java.lang.Throwable - in the event of problems.

visitGetChildrenNamesCommand

public java.lang.Object visitGetChildrenNamesCommand(InvocationContext ctx,
                                                     GetChildrenNamesCommand command)
                                              throws java.lang.Throwable

Description copied from interface: Visitor

Visits a GetChildrenNamesCommand.

Specified by:

visitGetChildrenNamesCommand in interface Visitor

Overrides:

visitGetChildrenNamesCommand in class CacheLoaderInterceptor

Parameters:

ctx - invocation context

command - command to visit

Returns:

response from the visit

Throws:

java.lang.Throwable - in the event of problems.

visitGetKeysCommand

public java.lang.Object visitGetKeysCommand(InvocationContext ctx,
                                            GetKeysCommand command)
                                     throws java.lang.Throwable

Description copied from interface: Visitor

Visits a GetKeysCommand.

Specified by:

visitGetKeysCommand in interface Visitor

Overrides:

visitGetKeysCommand in class CacheLoaderInterceptor

Parameters:

ctx - invocation context

command - command to visit

Returns:

response from the visit

Throws:

java.lang.Throwable - in the event of problems.

visitGetNodeCommand

public java.lang.Object visitGetNodeCommand(InvocationContext ctx,
                                            GetNodeCommand command)
                                     throws java.lang.Throwable

Description copied from interface: Visitor

Visits a GetNodeCommand.

Specified by:

visitGetNodeCommand in interface Visitor

Overrides:

visitGetNodeCommand in class CacheLoaderInterceptor

Parameters:

ctx - invocation context

command - command to visit

Returns:

response from the visit

Throws:

java.lang.Throwable - in the event of problems.

visitGetKeyValueCommand

public java.lang.Object visitGetKeyValueCommand(InvocationContext ctx,
                                                GetKeyValueCommand command)
                                         throws java.lang.Throwable

Description copied from interface: Visitor

Visits a GetKeyValueCommand.

Specified by:

visitGetKeyValueCommand in interface Visitor

Overrides:

visitGetKeyValueCommand in class CacheLoaderInterceptor

Parameters:

ctx - invocation context

command - command to visit

Returns:

response from the visit

Throws:

java.lang.Throwable - in the event of problems.

visitPutForExternalReadCommand

public java.lang.Object visitPutForExternalReadCommand(InvocationContext ctx,
                                                       PutForExternalReadCommand command)
                                                throws java.lang.Throwable

Description copied from interface: Visitor

Visits a PutForExternalReadCommand.

Specified by:

visitPutForExternalReadCommand in interface Visitor

Overrides:

visitPutForExternalReadCommand in class CacheLoaderInterceptor

Parameters:

ctx - invocation context

command - command to visit

Returns:

response from the visit

Throws:

java.lang.Throwable - in the event of problems.

visitPutKeyValueCommand

public java.lang.Object visitPutKeyValueCommand(InvocationContext ctx,
                                                PutKeyValueCommand command)
                                         throws java.lang.Throwable

Description copied from interface: Visitor

Visits a PutKeyValueCommand.

Specified by:

visitPutKeyValueCommand in interface Visitor

Overrides:

visitPutKeyValueCommand in class CacheLoaderInterceptor

Parameters:

ctx - invocation context

command - command to visit

Returns:

response from the visit

Throws:

java.lang.Throwable - in the event of problems.

visitPutDataMapCommand

public java.lang.Object visitPutDataMapCommand(InvocationContext ctx,
                                               PutDataMapCommand command)
                                        throws java.lang.Throwable

Description copied from interface: Visitor

Visits a PutDataMapCommand.

Specified by:

visitPutDataMapCommand in interface Visitor

Overrides:

visitPutDataMapCommand in class CacheLoaderInterceptor

Parameters:

ctx - invocation context

command - command to visit

Returns:

response from the visit

Throws:

java.lang.Throwable - in the event of problems.

visitRemoveKeyCommand

public java.lang.Object visitRemoveKeyCommand(InvocationContext ctx,
                                              RemoveKeyCommand command)
                                       throws java.lang.Throwable

Description copied from interface: Visitor

Visits a RemoveKeyCommand.

Specified by:

visitRemoveKeyCommand in interface Visitor

Overrides:

visitRemoveKeyCommand in class CacheLoaderInterceptor

Parameters:

ctx - invocation context

command - command to visit

Returns:

response from the visit

Throws:

java.lang.Throwable - in the event of problems.

visitMoveCommand

public java.lang.Object visitMoveCommand(InvocationContext ctx,
                                         MoveCommand command)
                                  throws java.lang.Throwable

Description copied from interface: Visitor

Visits a MoveCommand.

Specified by:

visitMoveCommand in interface Visitor

Overrides:

visitMoveCommand in class CacheLoaderInterceptor

Parameters:

ctx - invocation context

command - command to visit

Returns:

response from the visit

Throws:

java.lang.Throwable - in the event of problems.

getActivations

public long getActivations()

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 CacheLoaderInterceptor

dumpStatistics

public java.util.Map<java.lang.String,java.lang.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 CacheLoaderInterceptor

Returns:

an empty map

recordNodeLoaded

protected void recordNodeLoaded(InvocationContext ctx,
                                Fqn fqn)

Overrides:

recordNodeLoaded in class CacheLoaderInterceptor