org.axonframework.eventhandling
Class DefaultClusterSelector

java.lang.Object
  org.axonframework.eventhandling.DefaultClusterSelector

All Implemented Interfaces:

ClusterSelector

public class DefaultClusterSelector
extends Object
implements ClusterSelector

ClusterSelector implementation that always selects the same cluster. This implementation can serve as delegate for other cluster selectors for event listeners that do not belong to a specific cluster.

Since:

1.2

Author:

Allard Buijze

Constructor Summary

DefaultClusterSelector()
Initializes the DefaultClusterSelector using a SimpleCluster with identifier "default", to which this instance will assign all Event Listeners.

DefaultClusterSelector(Cluster defaultCluster)
Initializes the DefaultClusterSelector to assign the given defaultCluster to each listener.

Method Summary

Cluster

selectCluster(EventListener eventListener) Selects the cluster instance that the given eventListener should be member of.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultClusterSelector

public DefaultClusterSelector()

Initializes the DefaultClusterSelector using a SimpleCluster with identifier "default", to which this instance will assign all Event Listeners.

DefaultClusterSelector

public DefaultClusterSelector(Cluster defaultCluster)

Initializes the DefaultClusterSelector to assign the given defaultCluster to each listener.

Parameters:

defaultCluster - The Cluster to assign to each listener

Method Detail

selectCluster

public Cluster selectCluster(EventListener eventListener)

Selects the cluster instance that the given eventListener should be member of. This may be an existing (or pre-configured) cluster, as well as a newly created cluster.

When null is returned, this may cause the Event Listener not to be subscribed to any cluster at all.

This implementation always returns the same instance of SimpleCluster.

Specified by:

selectCluster in interface ClusterSelector

Parameters:

eventListener - the event listener to select a cluster for

Returns:

The Cluster assigned to the listener