001/* 002 * Copyright (c) 2016 Chris K Wensel <chris@wensel.net>. All Rights Reserved. 003 * Copyright (c) 2007-2017 Xplenty, Inc. All Rights Reserved. 004 * 005 * Project and contact information: http://www.cascading.org/ 006 * 007 * This file is part of the Cascading project. 008 * 009 * Licensed under the Apache License, Version 2.0 (the "License"); 010 * you may not use this file except in compliance with the License. 011 * You may obtain a copy of the License at 012 * 013 * http://www.apache.org/licenses/LICENSE-2.0 014 * 015 * Unless required by applicable law or agreed to in writing, software 016 * distributed under the License is distributed on an "AS IS" BASIS, 017 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 018 * See the License for the specific language governing permissions and 019 * limitations under the License. 020 */ 021 022package cascading.flow.hadoop.planner.rule.expression; 023 024import cascading.flow.planner.iso.expression.ElementCapture; 025import cascading.flow.planner.iso.expression.ElementExpression; 026import cascading.flow.planner.iso.expression.ExpressionGraph; 027import cascading.flow.planner.iso.expression.FlowElementExpression; 028import cascading.flow.planner.iso.expression.PathScopeExpression; 029import cascading.flow.planner.iso.finder.SearchOrder; 030import cascading.pipe.Group; 031import cascading.tap.Tap; 032 033import static cascading.flow.planner.iso.expression.OrElementExpression.or; 034 035/** 036 * 037 */ 038public class StreamedAccumulatedTapsExpressionGraph extends ExpressionGraph 039 { 040 public StreamedAccumulatedTapsExpressionGraph() 041 { 042 super( SearchOrder.Depth ); 043 044 ElementExpression sink = or( 045 ElementCapture.Secondary, 046 new FlowElementExpression( Tap.class ), 047 new FlowElementExpression( Group.class ) 048 ); 049 050 this.arc( 051 new FlowElementExpression( ElementCapture.Primary, Tap.class ), 052 PathScopeExpression.ALL_NON_BLOCKING, 053 sink 054 ); 055 056 this.arc( 057 new FlowElementExpression( Tap.class ), 058 PathScopeExpression.ALL_BLOCKING, // if ANY_BLOCKING DualStreamedAccumulatedMergePipelineAssert will fire 059 sink 060 ); 061 } 062 }