    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.tez.planner.rule.expressiongraph;
    023
    024import cascading.flow.planner.graph.Extent;
    025import cascading.flow.planner.iso.expression.AnnotationExpression;
    026import cascading.flow.planner.iso.expression.ElementCapture;
    027import cascading.flow.planner.iso.expression.ExpressionGraph;
    028import cascading.flow.planner.iso.expression.FlowElementExpression;
    029import cascading.flow.stream.annotations.RoleMode;
    030import cascading.pipe.Boundary;
    031import cascading.pipe.Group;
    032import cascading.pipe.Merge;
    033import cascading.tap.Tap;
    034
    035import static cascading.flow.planner.iso.expression.AndElementExpression.and;
    036import static cascading.flow.planner.iso.expression.NotElementExpression.not;
    037import static cascading.flow.planner.iso.expression.OrElementExpression.or;
    038
    039/**
    040 *
    041 */
    042public class NoGroupMergeBoundaryTapExpressionGraph extends ExpressionGraph
    043  {
    044  public NoGroupMergeBoundaryTapExpressionGraph()
    045    {
    046    super(
    047      not(
    048        or(
    049          ElementCapture.Primary,
    050          new FlowElementExpression( Extent.class ),
    051          new FlowElementExpression( Group.class ),
    052          and( new FlowElementExpression( Merge.class ), not( new AnnotationExpression( RoleMode.Logical ) ) ),
    053          new FlowElementExpression( Boundary.class ),
    054          new FlowElementExpression( Tap.class )
    055        )
    056      )
    057    );
    058    }
    059  }