org.jboss.cache.interceptors
Class CacheLoaderInterceptor

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

All Implemented Interfaces:

Visitor, CacheLoaderInterceptorMBean, InterceptorMBean

Direct Known Subclasses:

ActivationInterceptor

public class CacheLoaderInterceptor
extends CommandInterceptor
implements CacheLoaderInterceptorMBean

Loads nodes that don't exist at the time of the call into memory from the CacheLoader

Version:

$Id: CacheLoaderInterceptor.java 6909 2008-10-13 14:02:29Z bstansberry@jboss.com $

Author:

Bela Ban

Field Summary

protected DataContainer	dataContainer
protected boolean	isActivation
protected CacheLoader	loader
protected Notifier	notifier
protected TransactionTable	txTable
protected boolean	useCacheStore True if CacheStoreInterceptor is in place.
protected boolean	usingOptimisticInvalidation

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

configuration, log, trace

Constructor Summary

CacheLoaderInterceptor()

Method Summary

Map<String,Object>	dumpStatistics() Returns a map of statistics.
long	getCacheLoaderLoads() Returns the number of cache loader node loads
long	getCacheLoaderMisses() Returns the number of cache loader node misses
protected void	injectDependencies(TransactionTable txTable, CacheLoaderManager clm, Configuration configuration, DataContainer dataContainer, LockManager lockManager, Notifier notifier)
protected void	lock(Fqn fqn, LockType lockType, boolean recursive, InvocationContext ctx)
void	resetStatistics() Resets statistics gathered.
protected void	startInterceptor()
Object	visitClearDataCommand(InvocationContext ctx, ClearDataCommand command) Visits a RemoveDataCommand.
Object	visitGetChildrenNamesCommand(InvocationContext ctx, GetChildrenNamesCommand command) Visits a GetChildrenNamesCommand.
Object	visitGetDataMapCommand(InvocationContext ctx, GetDataMapCommand command) Visits a GetDataMapCommand.
Object	visitGetKeysCommand(InvocationContext ctx, GetKeysCommand command) Visits a GetKeysCommand.
Object	visitGetKeyValueCommand(InvocationContext ctx, GetKeyValueCommand command) Visits a GetKeyValueCommand.
Object	visitGetNodeCommand(InvocationContext ctx, GetNodeCommand command) Visits a GetNodeCommand.
Object	visitMoveCommand(InvocationContext ctx, MoveCommand command) Visits a MoveCommand.
Object	visitPutDataMapCommand(InvocationContext ctx, PutDataMapCommand command) Visits a PutDataMapCommand.
Object	visitPutForExternalReadCommand(InvocationContext ctx, PutForExternalReadCommand command) Visits a PutForExternalReadCommand.
Object	visitPutKeyValueCommand(InvocationContext ctx, PutKeyValueCommand command) Visits a PutKeyValueCommand.
Object	visitRemoveKeyCommand(InvocationContext ctx, RemoveKeyCommand command) Visits a RemoveKeyCommand.
Object	visitRemoveNodeCommand(InvocationContext ctx, RemoveNodeCommand command) Visits a RemoveNodeCommand.
Object	visitRollbackCommand(InvocationContext ctx, RollbackCommand command) Visits a RollbackCommand.

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

getNext, getStatisticsEnabled, handleDefault, hasNext, invokeNextInterceptor, setNext, setStatisticsEnabled

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

Methods inherited from interface org.jboss.cache.interceptors.InterceptorMBean

getStatisticsEnabled, setStatisticsEnabled

Field Detail

txTable

protected TransactionTable txTable

loader

protected CacheLoader loader

dataContainer

protected DataContainer dataContainer

notifier

protected Notifier notifier

isActivation

protected boolean isActivation

usingOptimisticInvalidation

protected boolean usingOptimisticInvalidation

useCacheStore

protected boolean useCacheStore

True if CacheStoreInterceptor is in place. This allows us to skip loading keys for remove(Fqn, key) and put(Fqn, key). It also affects removal of node data and listing children.

Constructor Detail

CacheLoaderInterceptor

public CacheLoaderInterceptor()

Method Detail

injectDependencies

protected void injectDependencies(TransactionTable txTable,
                                  CacheLoaderManager clm,
                                  Configuration configuration,
                                  DataContainer dataContainer,
                                  LockManager lockManager,
                                  Notifier notifier)

startInterceptor

protected void startInterceptor()

visitPutDataMapCommand

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

Description copied from interface: Visitor

Visits a PutDataMapCommand.

Specified by:

visitPutDataMapCommand in interface Visitor

Overrides:

visitPutDataMapCommand in class AbstractVisitor

Parameters:

ctx - invocation context

command - command to visit

Returns:

response from the visit

Throws:

Throwable - in the event of problems.

visitPutKeyValueCommand

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

Description copied from interface: Visitor

Visits a PutKeyValueCommand.

Specified by:

visitPutKeyValueCommand in interface Visitor

Overrides:

visitPutKeyValueCommand in class AbstractVisitor

Parameters:

ctx - invocation context

command - command to visit

Returns:

response from the visit

Throws:

Throwable - in the event of problems.

visitPutForExternalReadCommand

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

Description copied from interface: Visitor

Visits a PutForExternalReadCommand.

Specified by:

visitPutForExternalReadCommand in interface Visitor

Overrides:

visitPutForExternalReadCommand in class AbstractVisitor

Parameters:

ctx - invocation context

command - command to visit

Returns:

response from the visit

Throws:

Throwable - in the event of problems.

visitMoveCommand

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

Description copied from interface: Visitor

Visits a MoveCommand.

Specified by:

visitMoveCommand in interface Visitor

Overrides:

visitMoveCommand in class AbstractVisitor

Parameters:

ctx - invocation context

command - command to visit

Returns:

response from the visit

Throws:

Throwable - in the event of problems.

visitGetKeyValueCommand

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

Description copied from interface: Visitor

Visits a GetKeyValueCommand.

Specified by:

visitGetKeyValueCommand in interface Visitor

Overrides:

visitGetKeyValueCommand in class AbstractVisitor

Parameters:

ctx - invocation context

command - command to visit

Returns:

response from the visit

Throws:

Throwable - in the event of problems.

visitGetNodeCommand

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

Description copied from interface: Visitor

Visits a GetNodeCommand.

Specified by:

visitGetNodeCommand in interface Visitor

Overrides:

visitGetNodeCommand in class AbstractVisitor

Parameters:

ctx - invocation context

command - command to visit

Returns:

response from the visit

Throws:

Throwable - in the event of problems.

visitGetChildrenNamesCommand

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

Description copied from interface: Visitor

Visits a GetChildrenNamesCommand.

Specified by:

visitGetChildrenNamesCommand in interface Visitor

Overrides:

visitGetChildrenNamesCommand in class AbstractVisitor

Parameters:

ctx - invocation context

command - command to visit

Returns:

response from the visit

Throws:

Throwable - in the event of problems.

visitGetKeysCommand

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

Description copied from interface: Visitor

Visits a GetKeysCommand.

Specified by:

visitGetKeysCommand in interface Visitor

Overrides:

visitGetKeysCommand in class AbstractVisitor

Parameters:

ctx - invocation context

command - command to visit

Returns:

response from the visit

Throws:

Throwable - in the event of problems.

visitGetDataMapCommand

public Object visitGetDataMapCommand(InvocationContext ctx,
                                     GetDataMapCommand command)
                              throws Throwable

Description copied from interface: Visitor

Visits a GetDataMapCommand.

Specified by:

visitGetDataMapCommand in interface Visitor

Overrides:

visitGetDataMapCommand in class AbstractVisitor

Parameters:

ctx - invocation context

command - command to visit

Returns:

response from the visit

Throws:

Throwable - in the event of problems.

visitRollbackCommand

public Object visitRollbackCommand(InvocationContext ctx,
                                   RollbackCommand command)
                            throws Throwable

Description copied from interface: Visitor

Visits a RollbackCommand.

Specified by:

visitRollbackCommand in interface Visitor

Overrides:

visitRollbackCommand in class AbstractVisitor

Parameters:

ctx - invocation context

command - command to visit

Returns:

response from the visit

Throws:

Throwable - in the event of problems.

visitRemoveNodeCommand

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

Description copied from interface: Visitor

Visits a RemoveNodeCommand.

Specified by:

visitRemoveNodeCommand in interface Visitor

Overrides:

visitRemoveNodeCommand in class AbstractVisitor

Parameters:

ctx - invocation context

command - command to visit

Returns:

response from the visit

Throws:

Throwable - in the event of problems.

visitRemoveKeyCommand

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

Description copied from interface: Visitor

Visits a RemoveKeyCommand.

Specified by:

visitRemoveKeyCommand in interface Visitor

Overrides:

visitRemoveKeyCommand in class AbstractVisitor

Parameters:

ctx - invocation context

command - command to visit

Returns:

response from the visit

Throws:

Throwable - in the event of problems.

visitClearDataCommand

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

Description copied from interface: Visitor

Visits a RemoveDataCommand.

Specified by:

visitClearDataCommand in interface Visitor

Overrides:

visitClearDataCommand in class AbstractVisitor

Parameters:

ctx - invocation context

command - command to visit

Returns:

response from the visit

Throws:

Throwable - in the event of problems.

getCacheLoaderLoads

public long getCacheLoaderLoads()

Description copied from interface: CacheLoaderInterceptorMBean

Returns the number of cache loader node loads

Specified by:

getCacheLoaderLoads in interface CacheLoaderInterceptorMBean

Returns:

the number of cache loader node loads

getCacheLoaderMisses

public long getCacheLoaderMisses()

Description copied from interface: CacheLoaderInterceptorMBean

Returns the number of cache loader node misses

Specified by:

getCacheLoaderMisses in interface CacheLoaderInterceptorMBean

Returns:

the number of cache loader node misses

resetStatistics

public void resetStatistics()

Description copied from class: CommandInterceptor

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

Specified by:

resetStatistics in interface InterceptorMBean

Overrides:

resetStatistics in class CommandInterceptor

dumpStatistics

public Map<String,Object> dumpStatistics()

Description copied from class: CommandInterceptor

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 InterceptorMBean

Overrides:

dumpStatistics in class CommandInterceptor

Returns:

an empty map

lock

protected void lock(Fqn fqn,
                    LockType lockType,
                    boolean recursive,
                    InvocationContext ctx)
             throws Throwable

Throws:

Throwable