jrunx.cluster
Class StickyRoundRobinAlgorithm

java.lang.Object
  |
  +--jrunx.cluster.ClusterAlgorithm
        |
        +--jrunx.cluster.RoundRobinAlgorithm
              |
              +--jrunx.cluster.StickyRoundRobinAlgorithm

All Implemented Interfaces:

ClusterConstants, java.io.Serializable

Direct Known Subclasses:

BroadcastAlgorithm

public class StickyRoundRobinAlgorithm

extends RoundRobinAlgorithm

This extension of the RoundRobin algorithm differs from its superclass in that it randomly selects a ClusterableService only when it needs to, such as on a recoverable failure or on the first invocation, and otherwise pins invocations to the same service it has selected previously.

Author:

PS Neville

See Also:

Serialized Form

Field Summary

ClusterableService

stickyServer

Fields inherited from class jrunx.cluster.RoundRobinAlgorithm

cursor

Fields inherited from class jrunx.cluster.ClusterAlgorithm

rand

Fields inherited from interface jrunx.cluster.ClusterConstants

AVAILABLE_SERVICES, CLUSTER_MANAGER_JNDI, DEFAULT_CLUSTER_DOMAIN, DEFAULT_ENABLED, JINI_CODE_BASE_JAR, PRIMARY_SERVICE, SECONDARY_SERVICE

Constructor Summary

StickyRoundRobinAlgorithm()

StickyRoundRobinAlgorithm(ClusterableService primary)

Method Summary

ClusterableService

selectService(java.util.ArrayList services)

Methods inherited from class jrunx.cluster.ClusterAlgorithm

chooseRandom, chooseRandom, chooseStub, getPrefered, invokeService, invokeService

Methods inherited from class java.lang.Object

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

Field Detail

stickyServer

public ClusterableService stickyServer

Constructor Detail

StickyRoundRobinAlgorithm

public StickyRoundRobinAlgorithm()

StickyRoundRobinAlgorithm

public StickyRoundRobinAlgorithm(ClusterableService primary)

Method Detail

selectService

public ClusterableService selectService(java.util.ArrayList services)
                                 throws java.rmi.RemoteException

Overrides:

selectService in class RoundRobinAlgorithm