org.apache.geronimo.clustering
Class LocalCluster

java.lang.Object
  org.apache.geronimo.clustering.MBeanImpl
      org.apache.geronimo.clustering.NamedMBeanImpl
          org.apache.geronimo.clustering.Cluster
              org.apache.geronimo.clustering.LocalCluster

public class LocalCluster

extends Cluster

A uniquely identifiable n->n intra-vm event-raising communications channel. A number of nodes which are part of the same cluster and reside in the same VM should share a single Cluster object.

Version:

$Revision: 1.15 $ $Date: 2004/03/10 09:58:21 $

Field Summary

protected org.apache.commons.logging.Log	_log
protected List	_members

Fields inherited from class org.apache.geronimo.clustering.MBeanImpl

_objectName, _server

Constructor Summary

LocalCluster()

Method Summary

Data	getData() Get the Cluster's Data - uses an election policy (currently hardwired) to decide which node to get it from.
List	getMembers() Return current Cluster members.
void	join(Object member) Add the given node to this Cluster.
void	leave(Object member) Remove the given node from this Cluster.
void	notifyDataDelta(DataDeltaListener l, DataDelta delta) Apply the given delta to all interested members of the cluster, excluding the member which generated it.
protected void	notifyMembershipChanged(List members) Notify interested Cluster members of a change in membership, including the node which generated it.

Methods inherited from class org.apache.geronimo.clustering.Cluster

doFail, doStart, doStop, makeObjectName

Methods inherited from class org.apache.geronimo.clustering.NamedMBeanImpl

canStart, getName

Methods inherited from class org.apache.geronimo.clustering.MBeanImpl

canStop, getObjectName, getReference

Methods inherited from class java.lang.Object

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

Field Detail

_log

protected org.apache.commons.logging.Log _log

_members

protected List _members

Constructor Detail

LocalCluster

public LocalCluster()

Method Detail

getMembers

public List getMembers()

Description copied from class: Cluster

Return current Cluster members.

Specified by:

getMembers in class Cluster

Returns:

a List value

notifyMembershipChanged

protected void notifyMembershipChanged(List members)

Notify interested Cluster members of a change in membership, including the node which generated it.

Parameters:

members - a List value

join

public void join(Object member)

Description copied from class: Cluster

Add the given node to this Cluster.

Specified by:

join in class Cluster

Parameters:

member - an Object value

leave

public void leave(Object member)

Description copied from class: Cluster

Remove the given node from this Cluster.

Specified by:

leave in class Cluster

Parameters:

member - an Object value

getData

public Data getData()

Get the Cluster's Data - uses an election policy (currently hardwired) to decide which node to get it from.

Specified by:

getData in class Cluster

Returns:

a Data value - The data

notifyDataDelta

public void notifyDataDelta(DataDeltaListener l,
                            DataDelta delta)

Apply the given delta to all interested members of the cluster, excluding the member which generated it.

Parameters:

l - a DataDeltaListener value - The node that generated the delta

delta - a DataDelta value - The delta