Rio Project 4.2 API Documentation

org.rioproject.monitor
Class RoundRobinSelector

java.lang.Object
  org.rioproject.monitor.ServiceResourceSelector
      org.rioproject.monitor.RoundRobinSelector

All Implemented Interfaces:

LeaseListener

public class RoundRobinSelector
extends ServiceResourceSelector

This class provides an implementation of a ServiceResourceSelector which manages a LinkedList of ServiceResource objects which reflect the resources being leased. This class organizes list items in a round robin fashion, putting a used elements last in the list one they are selected. This class must be registered with the LandlordLessor, and will be notified as resources are lease, updated or removed

Author:

Dennis Reedy

See Also:

LandlordLessor, ResourceLessor

Field Summary

Fields inherited from class org.rioproject.monitor.ServiceResourceSelector

collection, collectionLock, landlord

Constructor Summary

RoundRobinSelector()
Construct a RoundRobinSelector

Method Summary

void	serviceResourceSelected(ServiceResource svcResource) This method allows concrete implementations of this class to order the Collection of ServiceResource instances based on a ServiceResource being selected
protected void	update(LeasedResource resource) Override parent's update method to provide proper LinkedList behavior

Methods inherited from class org.rioproject.monitor.ServiceResourceSelector

add, expired, getServiceResource, getServiceResource, getServiceResources, register, remove, removed, renewed, selectServiceResource, setLandlordLessor

Methods inherited from class java.lang.Object

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

Constructor Detail

RoundRobinSelector

public RoundRobinSelector()

Construct a RoundRobinSelector

Method Detail

serviceResourceSelected

public void serviceResourceSelected(ServiceResource svcResource)

Description copied from class: ServiceResourceSelector

This method allows concrete implementations of this class to order the Collection of ServiceResource instances based on a ServiceResource being selected

Specified by:

serviceResourceSelected in class ServiceResourceSelector

Parameters:

svcResource - A ServiceResource instance selected for provisioning a ServiceBean

See Also:

ServiceResourceSelector.serviceResourceSelected(org.rioproject.resources.servicecore.ServiceResource)

update

protected void update(LeasedResource resource)

Override parent's update method to provide proper LinkedList behavior

Overrides:

update in class ServiceResourceSelector

Parameters:

resource - The LeasedResource