org.softamis.cluster4spring.support.invocation
Class ShuffleEndpointSelectionPolicy<E extends Endpoint<SI>,SI extends ServiceMoniker>

java.lang.Object
  org.softamis.cluster4spring.support.invocation.ShuffleEndpointSelectionPolicy<E,SI>

Type Parameters:

SI - type of data used to invoke remote service (such as remote service URL)

E - type of endpoints that could be created by this factory

All Implemented Interfaces:

EndpointSelectionPolicy<E,SI>

public class ShuffleEndpointSelectionPolicy<E extends Endpoint<SI>,SI extends ServiceMoniker>
extends java.lang.Object
implements EndpointSelectionPolicy<E,SI>

Policy that performs selection of endpoint for invocation from the given list of available endpoints. This implementation creates copy of given list, shuffle it and selects first endpoint from resulting list.

Author:

Andrew Sazonov

See Also:

Collections.shuffle(java.util.List)

Field Summary

protected static org.apache.commons.logging.Log

fLog

Constructor Summary

ShuffleEndpointSelectionPolicy()

Method Summary

E	selectServiceEndpoint(java.util.List<E> aEndpoints) Selects endpoint for invocation from the given list of endpoints.

Methods inherited from class java.lang.Object

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

Field Detail

fLog

protected static final org.apache.commons.logging.Log fLog

Constructor Detail

ShuffleEndpointSelectionPolicy

public ShuffleEndpointSelectionPolicy()

Method Detail

selectServiceEndpoint

public E selectServiceEndpoint(java.util.List<E> aEndpoints)
                                             throws org.springframework.remoting.RemoteAccessException

Selects endpoint for invocation from the given list of endpoints. This implementation creates copy of given list, shuffle it and selects firstendpoint from resulting list.

Specified by:

selectServiceEndpoint in interface EndpointSelectionPolicy<E extends Endpoint<SI>,SI extends ServiceMoniker>

Parameters:

aEndpoints - list of endpoints available for invocation of remote service

Returns:

selected endpoints

Throws:

org.springframework.remoting.RemoteAccessException - throw if some error occured during seleting endpoint for invocation

See Also:

Collections.shuffle(java.util.List)