001/*
002 * Copyright (C) 2011 The Guava Authors
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package com.google.common.util.concurrent;
018
019import com.google.common.annotations.Beta;
020
021import java.util.concurrent.Callable;
022import java.util.concurrent.ScheduledExecutorService;
023import java.util.concurrent.TimeUnit;
024
025/**
026 * A {@link ScheduledExecutorService} that returns {@link ListenableFuture}
027 * instances from its {@code ExecutorService} methods. To create an instance
028 * from an existing {@link ScheduledExecutorService}, call
029 * {@link MoreExecutors#listeningDecorator(ScheduledExecutorService)}.
030 *
031 * @author Chris Povirk
032 * @since 10.0
033 */
034@Beta
035public interface ListeningScheduledExecutorService
036    extends ScheduledExecutorService, ListeningExecutorService {
037
038  /** @since 15.0 (previously returned ScheduledFuture) */
039  @Override
040  ListenableScheduledFuture<?> schedule(
041      Runnable command, long delay, TimeUnit unit);
042
043  /** @since 15.0 (previously returned ScheduledFuture) */
044  @Override
045  <V> ListenableScheduledFuture<V> schedule(
046      Callable<V> callable, long delay, TimeUnit unit);
047
048  /** @since 15.0 (previously returned ScheduledFuture) */
049  @Override
050  ListenableScheduledFuture<?> scheduleAtFixedRate(
051      Runnable command, long initialDelay, long period, TimeUnit unit);
052
053  /** @since 15.0 (previously returned ScheduledFuture) */
054  @Override
055  ListenableScheduledFuture<?> scheduleWithFixedDelay(
056      Runnable command, long initialDelay, long delay, TimeUnit unit);
057}