001 /* 002 * Copyright (c) 2007-2015 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 */ 020 021 package cascading.management; 022 023 import java.util.Collection; 024 import java.util.List; 025 import java.util.concurrent.Callable; 026 import java.util.concurrent.Future; 027 import 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 */ 039 public 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 }