    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.tez.planner.rule.partitioner;
    022
    023import cascading.flow.planner.iso.ElementAnnotation;
    024import cascading.flow.planner.iso.expression.ElementCapture;
    025import cascading.flow.planner.rule.RuleExpression;
    026import cascading.flow.planner.rule.expressiongraph.NoGroupJoinMergeBoundaryTapExpressionGraph;
    027import cascading.flow.planner.rule.partitioner.ExpressionRulePartitioner;
    028import cascading.flow.stream.graph.IORole;
    029import cascading.flow.tez.planner.rule.expressiongraph.TopDownConsecutiveBoundariesExpressionGraph;
    030
    031import static cascading.flow.planner.rule.PlanPhase.PartitionNodes;
    032
    033/**
    034 *
    035 */
    036public class TopDownBoundariesNodePartitioner extends ExpressionRulePartitioner
    037  {
    038  public TopDownBoundariesNodePartitioner()
    039    {
    040    super(
    041      PartitionNodes,
    042
    043      new RuleExpression(
    044        new NoGroupJoinMergeBoundaryTapExpressionGraph(),
    045        new TopDownConsecutiveBoundariesExpressionGraph()
    046      ),
    047
    048      new ElementAnnotation( ElementCapture.Include, IORole.sink )
    049    );
    050    }
    051  }