    001/*
    002 * Copyright (c) 2007-2016 Concurrent, Inc. All Rights Reserved.
    003 *
    004 * Project and contact information: http://www.cascading.org/
    005 *
    006 * This file is part of the Cascading project.
    007 *
    008 * Licensed under the Apache License, Version 2.0 (the "License");
    009 * you may not use this file except in compliance with the License.
    010 * You may obtain a copy of the License at
    011 *
    012 *     http://www.apache.org/licenses/LICENSE-2.0
    013 *
    014 * Unless required by applicable law or agreed to in writing, software
    015 * distributed under the License is distributed on an "AS IS" BASIS,
    016 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    017 * See the License for the specific language governing permissions and
    018 * limitations under the License.
    019 */
    020
    021package cascading.management;
    022
    023import java.util.Collection;
    024import java.util.List;
    025import java.util.concurrent.Callable;
    026import java.util.concurrent.Future;
    027import java.util.concurrent.TimeUnit;
    028
    029/**
    030 * The interface UnitOfWorkSpawnStrategy is a strategy for allowing pluggable thread management services into
    031 * any {@link UnitOfWork} class.
    032 * <p/>
    033 * The default strategy is {@link UnitOfWorkExecutorStrategy}.
    034 *
    035 * @see UnitOfWork
    036 * @see cascading.flow.Flow
    037 * @see cascading.cascade.Cascade
    038 */
    039public interface UnitOfWorkSpawnStrategy
    040  {
    041  List<Future<Throwable>> start( UnitOfWork unitOfWork, int maxConcurrentThreads, Collection<Callable<Throwable>> values ) throws InterruptedException;
    042
    043  boolean isCompleted( UnitOfWork unitOfWork );
    044
    045  void complete( UnitOfWork unitOfWork, int duration, TimeUnit unit ) throws InterruptedException;
    046  }