    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.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.HashJoin;
    033import cascading.pipe.Merge;
    034import cascading.tap.Tap;
    035
    036import static cascading.flow.planner.iso.expression.AndElementExpression.and;
    037import static cascading.flow.planner.iso.expression.NotElementExpression.not;
    038import static cascading.flow.planner.iso.expression.OrElementExpression.or;
    039
    040/**
    041 *
    042 */
    043public class NoGroupJoinMergeBoundaryTapExpressionGraph extends ExpressionGraph
    044  {
    045  public NoGroupJoinMergeBoundaryTapExpressionGraph()
    046    {
    047    super(
    048      not(
    049        or(
    050          ElementCapture.Primary,
    051          new FlowElementExpression( Extent.class ),
    052          new FlowElementExpression( Group.class ),
    053          new FlowElementExpression( HashJoin.class ),
    054          and( new FlowElementExpression( Merge.class ), not( new AnnotationExpression( RoleMode.Logical ) ) ),
    055          new FlowElementExpression( Boundary.class ),
    056          new FlowElementExpression( Tap.class )
    057        )
    058      )
    059    );
    060    }
    061  }