    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.assertion;
    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.rule.RuleAssert;
    027import cascading.flow.planner.rule.RuleExpression;
    028import cascading.pipe.HashJoin;
    029
    030import static cascading.flow.planner.rule.PlanPhase.PreBalanceAssembly;
    031
    032/**
    033 * Verifies that there are no {@link cascading.pipe.HashJoin} pipes in the assembly.
    034 */
    035public class NoHashJoinAssert extends RuleAssert
    036  {
    037  public NoHashJoinAssert()
    038    {
    039    super(
    040      PreBalanceAssembly,
    041
    042      new RuleExpression( new ExpressionGraph()
    043        .arcs(
    044          new FlowElementExpression( ElementCapture.Primary, HashJoin.class )
    045        ) ),
    046
    047      "HashJoins not supported by this rule registry, found {Primary}",
    048
    049      AssertionType.Unsupported
    050    );
    051    }
    052  }