001/**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.camel.util.concurrent;
018
019import java.util.concurrent.Callable;
020import java.util.concurrent.FutureTask;
021
022import org.apache.camel.Rejectable;
023
024/**
025 * A {@link Rejectable} {@link FutureTask} used by {@link RejectableThreadPoolExecutor}.
026 *
027 * @see RejectableThreadPoolExecutor
028 */
029public class RejectableFutureTask<V> extends FutureTask<V> implements Rejectable {
030
031    private final Rejectable rejectable;
032
033    public RejectableFutureTask(Callable<V> callable) {
034        super(callable);
035        this.rejectable = callable instanceof Rejectable ? (Rejectable) callable : null;
036    }
037
038    public RejectableFutureTask(Runnable runnable, V result) {
039        super(runnable, result);
040        this.rejectable = runnable instanceof Rejectable ? (Rejectable) runnable : null;
041    }
042
043    @Override
044    public void reject() {
045        if (rejectable != null) {
046            rejectable.reject();
047        }
048    }
049
050}