LRUEnterpriseContextCachePolicy (JBoss Server API) - JBoss 4.0.1 sp1 server API Documentation 英文版文档

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org.jboss.ejb.plugins
Class LRUEnterpriseContextCachePolicy

java.lang.Object
  org.jboss.util.LRUCachePolicy
      org.jboss.ejb.plugins.LRUEnterpriseContextCachePolicy

All Implemented Interfaces:: org.jboss.util.CachePolicy, Monitorable, XmlLoadable

Direct Known Subclasses:: LRUStatefulContextCachePolicy

public class LRUEnterpriseContextCachePolicy
extends org.jboss.util.LRUCachePolicy
implements XmlLoadable, Monitorable

Least Recently Used cache policy for EnterpriseContexts.

Version:: $Revision: 1.25 $
Author:: Simone Bordet, Bill Burke
See Also:: AbstractInstanceCache

Nested Class Summary

protected class LRUEnterpriseContextCachePolicy.ContextLRUList
          Subclass that logs list activity events.

protected class LRUEnterpriseContextCachePolicy.OveragerTask
          This TimerTask passivates cached beans that have not been called for a while.

protected class LRUEnterpriseContextCachePolicy.ResizerTask
          This TimerTask resizes the cache capacity using the cache miss frequency algorithm, that is the more cache misses we have, the more the cache size is enlarged, and viceversa.

Nested classes inherited from class org.jboss.util.LRUCachePolicy

org.jboss.util.LRUCachePolicy.LRUCacheEntry, org.jboss.util.LRUCachePolicy.LRUList

Field Summary

protected static org.jboss.logging.Logger log


protected static Timer tasksTimer


Fields inherited from class org.jboss.util.LRUCachePolicy

m_list, m_map, m_maxCapacity, m_minCapacity

Constructor Summary

LRUEnterpriseContextCachePolicy(AbstractInstanceCache eic)
          Creates a LRU cache policy object given the instance cache that use this policy object.

Method Summary

protected void ageOut(org.jboss.util.LRUCachePolicy.LRUCacheEntry entry)


protected void cacheMiss()


protected org.jboss.util.LRUCachePolicy.LRUList createList()


void destroy()


void importXml(Element element)
          Reads from the configuration the parameters for this cache policy, that are all optionals.

void sample(Object s)
          Samples the status of the implementor object and register the status into the snapshot argument.

void start()


void stop()


Methods inherited from class org.jboss.util.LRUCachePolicy

create, createCacheEntry, flush, get, insert, peek, remove, size

Methods inherited from class java.lang.Object

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

Field Detail

log

protected static org.jboss.logging.Logger log

tasksTimer

protected static Timer tasksTimer

Constructor Detail