org.apache.jcs.auxiliary.lateral

Class LateralCache

java.lang.Object

org.apache.jcs.auxiliary.AbstractAuxiliaryCache

org.apache.jcs.auxiliary.AbstractAuxiliaryCacheEventLogging

org.apache.jcs.auxiliary.lateral.LateralCache

All Implemented Interfaces:

java.io.Serializable, AuxiliaryCache, ICache, ICacheType

public class LateralCache
extends AbstractAuxiliaryCacheEventLogging

Lateral distributor. Returns null on get by default. Net search not implemented.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.jcs.auxiliary.AbstractAuxiliaryCache

cacheEventLogger, elementSerializer, keyMatcher

Fields inherited from interface org.apache.jcs.engine.behavior.ICacheType

CACHE_HUB, DISK_CACHE, LATERAL_CACHE, REMOTE_CACHE

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	LateralCache(ILateralCacheAttributes cattr) Constructor for the LateralCache object
	LateralCache(ILateralCacheAttributes cattr, ILateralCacheService lateral, LateralCacheMonitor monitor) Constructor for the LateralCache object

Method Summary

Methods

Modifier and Type	Method and Description
void	fixCache(ILateralCacheService lateral) Replaces the current remote cache service handle with the given handle.
AuxiliaryCacheAttributes	getAuxiliaryCacheAttributes() This returns the generic attributes for an auxiliary cache.
java.lang.String	getCacheName() Gets the cacheName attribute of the LateralCache object
int	getCacheType() Gets the cacheType attribute of the LateralCache object
java.lang.String	getEventLoggingExtraInfo() Gets the extra info for the event log.
java.util.Set	getGroupKeys(java.lang.String groupName) Gets the set of keys of objects currently in the group
int	getSize() Returns the current cache size.
IStats	getStatistics() The NoWait on top does not call out to here yet.
java.lang.String	getStats() getStats
int	getStatus() Returns the cache status.
protected void	processDispose() Synchronously dispose the cache.
protected ICacheElement	processGet(java.io.Serializable key) The performance costs are too great.
protected java.util.Map	processGetMatching(java.lang.String pattern) Implementation of getMatching.
protected java.util.Map	processGetMultiple(java.util.Set keys) Gets multiple items from the cache based on the given set of keys.
protected boolean	processRemove(java.io.Serializable key) Synchronously remove from the remote cache; if failed, replace the remote handle with a zombie.
protected void	processRemoveAll() Synchronously removeAll from the remote cache; if failed, replace the remote handle with a zombie.
protected void	processUpdate(ICacheElement ce) Update lateral.
java.lang.String	toString()

Methods inherited from class org.apache.jcs.auxiliary.AbstractAuxiliaryCacheEventLogging

dispose, disposeWithEventLogging, get, getMatching, getMatchingWithEventLogging, getMultiple, getMultipleWithEventLogging, getWithEventLogging, remove, removeAll, removeAllWithEventLogging, removeWithEventLogging, update, updateWithEventLogging

Methods inherited from class org.apache.jcs.auxiliary.AbstractAuxiliaryCache

createICacheEvent, createICacheEvent, getCacheEventLogger, getElementSerializer, getKeyMatcher, logApplicationEvent, logError, logICacheEvent, setCacheEventLogger, setElementSerializer, setKeyMatcher

Methods inherited from class java.lang.Object

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

Constructor Detail

LateralCache

public LateralCache(ILateralCacheAttributes cattr,
            ILateralCacheService lateral,
            LateralCacheMonitor monitor)

Constructor for the LateralCache object

Parameters:

cattr -

lateral -

monitor -

LateralCache

protected LateralCache(ILateralCacheAttributes cattr)

Constructor for the LateralCache object

Parameters:

cattr -

Method Detail

processUpdate

protected void processUpdate(ICacheElement ce)
                      throws java.io.IOException

Update lateral.

Specified by:

processUpdate in class AbstractAuxiliaryCacheEventLogging

Parameters:

ce -

Throws:

java.io.IOException

processGet

protected ICacheElement processGet(java.io.Serializable key)
                            throws java.io.IOException

The performance costs are too great. It is not recommended that you enable lateral gets.

Specified by:

processGet in class AbstractAuxiliaryCacheEventLogging

Parameters:

key -

Returns:

ICacheElement or null

Throws:

java.io.IOException

processGetMatching

protected java.util.Map processGetMatching(java.lang.String pattern)
                                    throws java.io.IOException

Description copied from class: AbstractAuxiliaryCacheEventLogging

Implementation of getMatching.

Specified by:

processGetMatching in class AbstractAuxiliaryCacheEventLogging

Parameters:

pattern -

Returns:

A map of Serializable key to ICacheElement element, or an empty map if there is no data in cache for any of these keys

Throws:

java.io.IOException

processGetMultiple

protected java.util.Map processGetMultiple(java.util.Set keys)
                                    throws java.io.IOException

Gets multiple items from the cache based on the given set of keys.

Specified by:

processGetMultiple in class AbstractAuxiliaryCacheEventLogging

Parameters:

keys -

Returns:

a map of Serializable key to ICacheElement element, or an empty map if there is no data in cache for any of these keys

Throws:

java.io.IOException

getGroupKeys

public java.util.Set getGroupKeys(java.lang.String groupName)

Description copied from interface: AuxiliaryCache

Gets the set of keys of objects currently in the group

Parameters:

groupName -

Returns:

A set of group keys.

processRemove

protected boolean processRemove(java.io.Serializable key)
                         throws java.io.IOException

Synchronously remove from the remote cache; if failed, replace the remote handle with a zombie.

Specified by:

processRemove in class AbstractAuxiliaryCacheEventLogging

Parameters:

key -

Returns:

false always

Throws:

java.io.IOException

processRemoveAll

protected void processRemoveAll()
                         throws java.io.IOException

Synchronously removeAll from the remote cache; if failed, replace the remote handle with a zombie.

Specified by:

processRemoveAll in class AbstractAuxiliaryCacheEventLogging

Throws:

java.io.IOException

processDispose

protected void processDispose()
                       throws java.io.IOException

Synchronously dispose the cache. Not sure we want this.

Specified by:

processDispose in class AbstractAuxiliaryCacheEventLogging

Throws:

java.io.IOException

getStatus

public int getStatus()

Returns the cache status.

Returns:

The status value

getSize

public int getSize()

Returns the current cache size.

Returns:

The size value

getCacheType

public int getCacheType()

Gets the cacheType attribute of the LateralCache object

Returns:

The cacheType value

getCacheName

public java.lang.String getCacheName()

Gets the cacheName attribute of the LateralCache object

Returns:

The cacheName value

fixCache

public void fixCache(ILateralCacheService lateral)

Replaces the current remote cache service handle with the given handle.

Parameters:

lateral -

getStats

public java.lang.String getStats()

getStats

Returns:

String

getAuxiliaryCacheAttributes

public AuxiliaryCacheAttributes getAuxiliaryCacheAttributes()

Description copied from interface: AuxiliaryCache

This returns the generic attributes for an auxiliary cache. Most implementations will cast this to a more specific type.

Returns:

Returns the AuxiliaryCacheAttributes.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

Returns:

debugging data.

getEventLoggingExtraInfo

public java.lang.String getEventLoggingExtraInfo()

Description copied from class: AbstractAuxiliaryCache

Gets the extra info for the event log.

Specified by:

getEventLoggingExtraInfo in class AbstractAuxiliaryCache

Returns:

extra data.

getStatistics

public IStats getStatistics()

The NoWait on top does not call out to here yet.

Returns:

almost nothing