no.feide.moria.store
Class TicketTTLEvictionAlgorithm

java.lang.Object
  no.feide.moria.store.TicketTTLEvictionAlgorithm

All Implemented Interfaces:

org.jboss.cache.eviction.EvictionAlgorithm

public final class TicketTTLEvictionAlgorithm
extends java.lang.Object
implements org.jboss.cache.eviction.EvictionAlgorithm

This eviction algorithm expires cache elements after a fixed period, aka Time To Live.

Version:

$Revision: 1.10 $

Author:

Bjørn Ola Smievoll <b.o.smievoll@conduct.no>

Nested Class Summary

private static class

TicketTTLEvictionAlgorithm.NodeEntry Represents a cache node.

Field Summary

private no.feide.moria.log.MessageLogger	messageLogger The logger used by this class.
private EDU.oswego.cs.dl.util.concurrent.SyncList	nodeList Synchronized list of nodes.
private EDU.oswego.cs.dl.util.concurrent.SyncMap	nodeMap Synchronized hash map of nodes.

Constructor Summary

TicketTTLEvictionAlgorithm()
Constructs a new instance.

Method Summary

void	process(org.jboss.cache.eviction.Region region) Perfoms the eviction algorithm.
private void	processAddedNodes(org.jboss.cache.eviction.Region region, org.jboss.cache.Fqn fqn) Adds nodes to eviction data structures.
private void	processRemovedNodes(org.jboss.cache.Fqn fqn) Removes nodes from eviction data structures.
private void	prune(org.jboss.cache.eviction.Region region) Prunes a region of the tree.
void	resetEvictionQueue(org.jboss.cache.eviction.Region region)

Methods inherited from class java.lang.Object

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

Field Detail

messageLogger

private final no.feide.moria.log.MessageLogger messageLogger

The logger used by this class.

nodeList

private EDU.oswego.cs.dl.util.concurrent.SyncList nodeList

Synchronized list of nodes.

nodeMap

private EDU.oswego.cs.dl.util.concurrent.SyncMap nodeMap

Synchronized hash map of nodes.

Constructor Detail

TicketTTLEvictionAlgorithm

public TicketTTLEvictionAlgorithm()

Constructs a new instance.

Method Detail

process

public void process(org.jboss.cache.eviction.Region region)
             throws org.jboss.cache.eviction.EvictionException

Perfoms the eviction algorithm. Called periodically.

Specified by:

process in interface org.jboss.cache.eviction.EvictionAlgorithm

Throws:

org.jboss.cache.eviction.EvictionException

See Also:

EvictionAlgorithm.process(org.jboss.cache.eviction.Region)

resetEvictionQueue

public void resetEvictionQueue(org.jboss.cache.eviction.Region region)

Specified by:

resetEvictionQueue in interface org.jboss.cache.eviction.EvictionAlgorithm

processAddedNodes

private void processAddedNodes(org.jboss.cache.eviction.Region region,
                               org.jboss.cache.Fqn fqn)

Adds nodes to eviction data structures.

Parameters:

region - Region of tree.

fqn - Fully qualified name.

processRemovedNodes

private void processRemovedNodes(org.jboss.cache.Fqn fqn)

Removes nodes from eviction data structures.

Parameters:

fqn - Fully qualified name.

prune

private void prune(org.jboss.cache.eviction.Region region)
            throws org.jboss.cache.eviction.EvictionException

Prunes a region of the tree.

Parameters:

region - Region of tree.

Throws:

org.jboss.cache.eviction.EvictionException - If eviction is interrupted or fails.