/* * Copyright (c) 2012 the original author or authors. * * Licensed 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.eclipse.jetty.spdy.api; /** * <p>A callback abstraction that handles completed/failed events of asynchronous operations.</p> * <p>Instances of this class capture a context that is made available on the completion callback.</p> * * @param <C> the type of the context object */ public interface Handler<C> { /** * <p>Callback invoked when the operation completes.</p> * * @param context the context * @see #failed(Throwable) */ public abstract void completed(C context); /** * <p>Callback invoked when the operation fails.</p> * * @param x the reason for the operation failure */ public void failed(Throwable x); /** * <p>Empty implementation of {@link Handler}</p> * * @param <C> the type of the context object */ public static class Adapter<C> implements Handler<C> { @Override public void completed(C context) { } @Override public void failed(Throwable x) { throw new SPDYException(x); } } }