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.flow.tez.planner.rule.expressiongraph; 022 023import cascading.flow.planner.iso.expression.AnnotationExpression; 024import cascading.flow.planner.iso.expression.ElementCapture; 025import cascading.flow.planner.iso.expression.ExpressionGraph; 026import cascading.flow.planner.iso.expression.FlowElementExpression; 027import cascading.flow.planner.iso.expression.PathScopeExpression; 028import cascading.flow.planner.iso.expression.TypeExpression; 029import cascading.flow.planner.iso.finder.SearchOrder; 030import cascading.flow.planner.rule.elementexpression.BoundariesElementExpression; 031import cascading.flow.stream.graph.IORole; 032import cascading.pipe.Boundary; 033import cascading.pipe.Group; 034import cascading.pipe.HashJoin; 035import cascading.pipe.Merge; 036import cascading.tap.Tap; 037 038import static cascading.flow.planner.iso.expression.AndElementExpression.and; 039import static cascading.flow.planner.iso.expression.NotElementExpression.not; 040import static cascading.flow.planner.iso.expression.OrElementExpression.or; 041 042/** 043 * 044 */ 045public class BottomUpConsecutiveBoundariesExpressionGraph extends ExpressionGraph 046 { 047 public BottomUpConsecutiveBoundariesExpressionGraph() 048 { 049 super( SearchOrder.ReverseTopological ); 050 051 FlowElementExpression shared = new FlowElementExpression( ElementCapture.Secondary, HashJoin.class ); 052 053 this.arc( 054 or( 055 new FlowElementExpression( Boundary.class ), 056 new FlowElementExpression( Tap.class ), 057 new FlowElementExpression( Group.class, TypeExpression.Topo.LinearOut ), 058 new FlowElementExpression( Merge.class, TypeExpression.Topo.LinearOut ) 059 ), 060 061 PathScopeExpression.ANY, 062 063 shared 064 ); 065 066 this.arc( 067 shared, 068 069 PathScopeExpression.ANY, 070 071 or( 072 ElementCapture.Primary, 073 074 and( 075 new BoundariesElementExpression( TypeExpression.Topo.LinearIn ), 076 not( new AnnotationExpression( IORole.sink ) ) 077 ), 078 079 and( 080 new BoundariesElementExpression( TypeExpression.Topo.Splice ) 081 ) 082 ) 083 ); 084 } 085 }