1 /** 2 * Licensed to the Apache Software Foundation (ASF) under one 3 * or more contributor license agreements. See the NOTICE file 4 * distributed with this work for additional information 5 * regarding copyright ownership. The ASF licenses this file 6 * to you under the Apache License, Version 2.0 (the 7 * "License"); you may not use this file except in compliance 8 * with the License. You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, 13 * software distributed under the License is distributed on an 14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 15 * KIND, either express or implied. See the License for the 16 * specific language governing permissions and limitations 17 * under the License. 18 */ 19 package org.apache.mina.api; 20 21 import java.util.concurrent.Future; 22 23 /** 24 * A simple extension that allows listeners to register and receive results 25 * asynchronously via registered listeners. The listeners will be called from 26 * an event pool and so any amount of significant work should not be done in 27 * this listener. 28 * 29 * @author <a href="http://mina.apache.org">Apache MINA Project</a> 30 */ 31 public interface IoFuture<V> extends Future<V> { 32 /** 33 * Register a listener to asynchronously receive the results of the 34 * future computation. 35 * 36 * @param listener the listener to asynchronously receive the results of the future computation 37 * @return the instance of the future to allow "chaining" of registrations 38 */ 39 IoFuture<V> register(IoFutureListener<V> listener); 40 }