io.vertx.core.spi.cluster.ChoosableIterable Maven / Gradle / Ivy
/*
* Copyright (c) 2011-2013 The original author or authors
* ------------------------------------------------------
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* and Apache License v2.0 which accompanies this distribution.
*
* The Eclipse Public License is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* The Apache License v2.0 is available at
* http://www.opensource.org/licenses/apache2.0.php
*
* You may elect to redistribute this code under either of these licenses.
*/
package io.vertx.core.spi.cluster;
/**
*
* An extension of Iterable which allows keeps track of an iterator internally to allow the next element to be chosen
*
* @author Tim Fox
*
*/
public interface ChoosableIterable extends Iterable{
/**
* Is it empty?
*/
boolean isEmpty();
/**
* Return the next element T in a round robin fashion. The implementation should internally maintain some state
* which allows the next element to be returned
* @return The next element
*/
T choose();
}