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/**
 * Copyright (C) 2012 Ness Computing, Inc.
 *
 * 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.nesscomputing.concurrent;

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;

/**
 * Abstract delegating ExecutorService implementation.
 */
public abstract class DelegatingExecutorService implements ExecutorService
{

    private final ExecutorService delegate;

    DelegatingExecutorService(ExecutorService delegate)
    {
        this.delegate = delegate;
    }

    protected ExecutorService getDelegate()
    {
        return delegate;
    }

    // DELEGATES

    @Override
    public void execute(Runnable command)
    {
        delegate.execute(command);
    }

    @Override
    public void shutdown()
    {
        delegate.shutdown();
    }

    @Override
    public List shutdownNow()
    {
        return delegate.shutdownNow();
    }

    @Override
    public boolean isShutdown()
    {
        return delegate.isShutdown();
    }

    @Override
    public boolean isTerminated()
    {
        return delegate.isTerminated();
    }

    @Override
    public boolean awaitTermination(long timeout, TimeUnit unit)
    throws InterruptedException
    {
        return delegate.awaitTermination(timeout, unit);
    }

    @Override
    public  Future submit(Callable task)
    {
        return delegate.submit(task);
    }

    @Override
    public  Future submit(Runnable task, T result)
    {
        return delegate.submit(task, result);
    }

    @Override
    public Future submit(Runnable task)
    {
        return delegate.submit(task);
    }

    @Override
    public  List> invokeAll(Collection> tasks)
    throws InterruptedException
    {
        return delegate.invokeAll(tasks);
    }

    @Override
    public  List> invokeAll(Collection> tasks, long timeout, TimeUnit unit)
    throws InterruptedException
    {
        return delegate.invokeAll(tasks, timeout, unit);
    }

    @Override
    public  T invokeAny(Collection> tasks)
    throws InterruptedException, ExecutionException
    {
        return delegate.invokeAny(tasks);
    }

    @Override
    public  T invokeAny(Collection> tasks, long timeout, TimeUnit unit)
    throws InterruptedException, ExecutionException, TimeoutException
    {
        return delegate.invokeAny(tasks, timeout, unit);
    }
}