/*
* 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 java.util.concurrent.Callable;
/**
* A listening executor service which forwards all its method calls to another
* listening 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 Isaac Shum
* @since 10.0
*/
public abstract class ForwardingListeningExecutorService
extends ForwardingExecutorService implements ListeningExecutorService {
/** Constructor for use by subclasses. */
protected ForwardingListeningExecutorService() {}
@Override
protected abstract ListeningExecutorService delegate();
@Override
public <T> ListenableFuture<T> submit(Callable<T> task) {
return delegate().submit(task);
}
@Override
public ListenableFuture<?> submit(Runnable task) {
return delegate().submit(task);
}
@Override
public <T> ListenableFuture<T> submit(Runnable task, T result) {
return delegate().submit(task, result);
}
}
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