com.sun.sgs.impl.service.nodemap.policy
Class RoundRobinPolicy

java.lang.Object
  com.sun.sgs.impl.service.nodemap.policy.AbstractNodePolicy
      com.sun.sgs.impl.service.nodemap.policy.RoundRobinPolicy

All Implemented Interfaces:

NodeAssignPolicy

Direct Known Subclasses:

LocalNodePolicy

public class RoundRobinPolicy
extends AbstractNodePolicy

A very simple round robin assignment policy.

Field Summary

Fields inherited from class com.sun.sgs.impl.service.nodemap.policy.AbstractNodePolicy

availableNodes

Fields inherited from interface com.sun.sgs.impl.service.nodemap.NodeAssignPolicy

SERVER_NODE

Constructor Summary

RoundRobinPolicy(Properties props)
Creates a new instance of RoundRobinPolicy.

Method Summary

long	chooseNode(long requestingNode) Choose a node to assign an identity, or set of identities to.

Methods inherited from class com.sun.sgs.impl.service.nodemap.policy.AbstractNodePolicy

chooseNode, nodeAvailable, nodeUnavailable, reset

Methods inherited from class java.lang.Object

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

Constructor Detail

RoundRobinPolicy

public RoundRobinPolicy(Properties props)

Creates a new instance of RoundRobinPolicy.

Parameters:

props - service properties

Method Detail

chooseNode

public long chooseNode(long requestingNode)
                throws NoNodesAvailableException

Choose a node to assign an identity, or set of identities to.

Parameters:

requestingNode - the id of the node making the request, or SERVER_NODE if the system is making the request

Returns:

the chosen node's id

Throws:

NoNodesAvailableException - if there are no live nodes to assign to