Java tutorial
/* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. */ package org.apache.thrift.async; /** * A handler interface asynchronous clients can implement to receive future * notice of the results of an asynchronous method call. * * @param <T> The return type of the asynchronously invoked method. */ public interface AsyncMethodCallback<T> { /** * This method will be called when the remote side has completed invoking * your method call and the result is fully read. For {@code oneway} method * calls, this method will be called as soon as we have completed writing out * the request. * * @param response The return value of the asynchronously invoked method; * {@code null} for void methods which includes * {@code oneway} methods. */ void onComplete(T response); /** * This method will be called when there is either an unexpected client-side * exception like an IOException or else when the remote method raises an * exception, either declared in the IDL or due to an unexpected server-side * error. * * @param exception The exception encountered processing the the asynchronous * method call, may be a local exception or an unmarshalled * remote exception. */ void onError(Exception exception); }