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-rw-r--r--guava/src/com/google/common/util/concurrent/ForwardingExecutorService.java117
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diff --git a/guava/src/com/google/common/util/concurrent/ForwardingExecutorService.java b/guava/src/com/google/common/util/concurrent/ForwardingExecutorService.java
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+/*
+ * 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.collect.ForwardingObject;
+
+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
+ */
+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);
+ }
+
+ 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);
+ }
+}