    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.expressiongraph;
    022
    023import cascading.flow.planner.iso.expression.ElementCapture;
    024import cascading.flow.planner.iso.expression.ExpressionGraph;
    025import cascading.flow.planner.iso.expression.FlowElementExpression;
    026import cascading.flow.planner.iso.expression.ScopeExpression;
    027import cascading.flow.planner.iso.expression.TypeExpression;
    028import cascading.flow.planner.iso.finder.SearchOrder;
    029import cascading.flow.planner.rule.elementexpression.BoundariesElementExpression;
    030import cascading.pipe.CoGroup;
    031
    032/**
    033 *
    034 */
    035public class BoundarySelJoinCoGroupExpressionGraph extends ExpressionGraph
    036  {
    037  public BoundarySelJoinCoGroupExpressionGraph()
    038    {
    039    super( SearchOrder.ReverseTopological );
    040
    041    this
    042      .arc(
    043        new BoundariesElementExpression( ElementCapture.Primary, TypeExpression.Topo.SplitOnly ),
    044        ScopeExpression.ALL,
    045        new FlowElementExpression( CoGroup.class, TypeExpression.Topo.SpliceOnly )
    046      );
    047    }
    048  }