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    
017    package com.google.common.util.concurrent;
018    
019    import com.google.common.annotations.Beta;
020    
021    import java.util.concurrent.ScheduledExecutorService;
022    
023    /**
024     * A {@link ScheduledExecutorService} that returns {@link ListenableFuture}
025     * instances from its {@code ExecutorService} methods.  Futures returned by the
026     * {@code schedule*} methods, by contrast, need not implement {@code
027     * ListenableFuture}.  (To create an instance from an existing {@link
028     * ScheduledExecutorService}, call {@link
029     * MoreExecutors#listeningDecorator(ScheduledExecutorService)}.
030     *
031     * <p>TODO(cpovirk): make at least the one-time schedule() methods return a
032     * ListenableFuture, too? But then we'll need ListenableScheduledFuture...
033     *
034     * @author Chris Povirk
035     * @since 10.0
036     */
037    @Beta
038    public interface ListeningScheduledExecutorService
039        extends ScheduledExecutorService, ListeningExecutorService {
040    }