org.apache.cocoon.caching.impl
Class DefaultEventRegistryImpl

java.lang.Object
  org.apache.avalon.framework.logger.AbstractLogEnabled
      org.apache.cocoon.caching.impl.AbstractDoubleMapEventRegistry
          org.apache.cocoon.caching.impl.DefaultEventRegistryImpl

All Implemented Interfaces:

Disposable, Initializable, Component, Contextualizable, LogEnabled, ThreadSafe, EventRegistry

public class DefaultEventRegistryImpl
extends AbstractDoubleMapEventRegistry
implements EventRegistry, Contextualizable

This implementation of EventRegistry handles persistence by serializing an EventRegistryDataWrapper to disk.

Since:

2.1

Version:

$Id: DefaultEventRegistryImpl.html 1304258 2012-03-23 10:09:27Z ilgrosso $

Author:

Geoff Howard

Field Summary

Fields inherited from interface org.apache.cocoon.caching.EventRegistry

ROLE

Constructor Summary

DefaultEventRegistryImpl()

Method Summary

void	contextualize(Context context) Set up the persistence file.
protected void	persist(EventRegistryDataWrapper registryWrapper) Persist by simple object serialization.
protected boolean	recover() An EventRegistry must recover its persisted data.

Methods inherited from class org.apache.cocoon.caching.impl.AbstractDoubleMapEventRegistry

allKeys, clear, createBlankCache, createMultiMaps, dispose, initialize, keysForEvent, register, removeKey, unwrapRegistry, wasRecoverySuccessful, wrapRegistry

Methods inherited from class org.apache.avalon.framework.logger.AbstractLogEnabled

enableLogging, getLogger, setupLogger, setupLogger, setupLogger

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.cocoon.caching.EventRegistry

allKeys, clear, keysForEvent, register, removeKey, wasRecoverySuccessful

Constructor Detail

DefaultEventRegistryImpl

public DefaultEventRegistryImpl()

Method Detail

contextualize

public void contextualize(Context context)
                   throws ContextException

Set up the persistence file.

Specified by:

contextualize in interface Contextualizable

Throws:

ContextException

persist

protected void persist(EventRegistryDataWrapper registryWrapper)

Persist by simple object serialization. If the serialization fails, an error is logged but not thrown because missing/invalid state is handled at startup.

Specified by:

persist in class AbstractDoubleMapEventRegistry

recover

protected boolean recover()

Description copied from class: AbstractDoubleMapEventRegistry

An EventRegistry must recover its persisted data. Failed recovery must be signaled so that the Cache will know not to serve potentially stale content. Of course, at first start up failed recovery is a normal state.

Specified by:

recover in class AbstractDoubleMapEventRegistry

Returns:

boolean to signal success or failure of recovery.