    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.hadoop.planner.rule.assertion;
    023
    024import cascading.flow.hadoop.planner.rule.expression.DualStreamedAccumulatedExpression;
    025import cascading.flow.planner.rule.RuleAssert;
    026
    027import static cascading.flow.planner.rule.PlanPhase.PostPipelines;
    028
    029/**
    030 * Throws a planner failure if a Tap, both accumulating and streamed, flows into a single merge within a given
    031 * pipeline.
    032 */
    033public class DualStreamedAccumulatedMergePipelineAssert extends RuleAssert
    034  {
    035  public DualStreamedAccumulatedMergePipelineAssert()
    036    {
    037    super(
    038      PostPipelines,
    039      new DualStreamedAccumulatedExpression(),
    040      "may not merge accumulated and streamed in same pipeline: {Secondary}"
    041    );
    042    }
    043  }