/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.apache.activemq.apollo.util;

import java.util.concurrent.Future;

/** 
 * ListenableFuture
 * <p>
 * Description:
 * </p>
 * @author cmacnaug
 * @version 1.0
 */
public interface ListenableFuture<V> extends Future<V> {

    /**
     * Adds a listener for this future. The listener is called when the
     * Future is cancelled, or executed. 
     * @param listener The listener.
     */
    public void setFutureListener(FutureListener<? super V> listener);
}
