001/* 002 * Copyright (c) 2007-2017 Xplenty, 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.flow; 022 023import java.io.IOException; 024 025/** 026 * Interface FlowSkipStrategy is used to create new strategies that decide when a {@link Flow} should 027 * be skipped when executed in a {@link cascading.cascade.Cascade}. The default strategy is 028 * {@link FlowSkipIfSinkNotStale}. 029 * 030 * @see cascading.flow.FlowSkipIfSinkExists 031 * @see FlowSkipIfSinkNotStale 032 */ 033public interface FlowSkipStrategy 034 { 035 boolean skipFlow( Flow flow ) throws IOException; 036 }