| /* |
| * Copyright (C) 2011 The Guava 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 com.google.common.util.concurrent; |
| |
| import com.google.common.annotations.GwtIncompatible; |
| import com.google.common.collect.ForwardingObject; |
| import com.google.errorprone.annotations.CanIgnoreReturnValue; |
| import java.util.Collection; |
| import java.util.List; |
| import java.util.concurrent.Callable; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Future; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.TimeoutException; |
| |
| /** |
| * An executor service which forwards all its method calls to another executor service. Subclasses |
| * should override one or more methods to modify the behavior of the backing executor service as |
| * desired per the <a href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator pattern</a>. |
| * |
| * @author Kurt Alfred Kluever |
| * @since 10.0 |
| */ |
| @CanIgnoreReturnValue // TODO(cpovirk): Consider being more strict. |
| @GwtIncompatible |
| public abstract class ForwardingExecutorService extends ForwardingObject |
| implements ExecutorService { |
| /** Constructor for use by subclasses. */ |
| protected ForwardingExecutorService() {} |
| |
| @Override |
| protected abstract ExecutorService delegate(); |
| |
| @Override |
| public boolean awaitTermination(long timeout, TimeUnit unit) throws InterruptedException { |
| return delegate().awaitTermination(timeout, unit); |
| } |
| |
| @Override |
| public <T> List<Future<T>> invokeAll(Collection<? extends Callable<T>> tasks) |
| throws InterruptedException { |
| return delegate().invokeAll(tasks); |
| } |
| |
| @Override |
| public <T> List<Future<T>> invokeAll( |
| Collection<? extends Callable<T>> tasks, long timeout, TimeUnit unit) |
| throws InterruptedException { |
| return delegate().invokeAll(tasks, timeout, unit); |
| } |
| |
| @Override |
| public <T> T invokeAny(Collection<? extends Callable<T>> tasks) |
| throws InterruptedException, ExecutionException { |
| return delegate().invokeAny(tasks); |
| } |
| |
| @Override |
| public <T> T invokeAny(Collection<? extends Callable<T>> tasks, long timeout, TimeUnit unit) |
| throws InterruptedException, ExecutionException, TimeoutException { |
| return delegate().invokeAny(tasks, timeout, unit); |
| } |
| |
| @Override |
| public boolean isShutdown() { |
| return delegate().isShutdown(); |
| } |
| |
| @Override |
| public boolean isTerminated() { |
| return delegate().isTerminated(); |
| } |
| |
| @Override |
| public void shutdown() { |
| delegate().shutdown(); |
| } |
| |
| @Override |
| public List<Runnable> shutdownNow() { |
| return delegate().shutdownNow(); |
| } |
| |
| @Override |
| public void execute(Runnable command) { |
| delegate().execute(command); |
| } |
| |
| @Override |
| public <T> Future<T> submit(Callable<T> task) { |
| return delegate().submit(task); |
| } |
| |
| @Override |
| public Future<?> submit(Runnable task) { |
| return delegate().submit(task); |
| } |
| |
| @Override |
| public <T> Future<T> submit(Runnable task, T result) { |
| return delegate().submit(task, result); |
| } |
| } |