    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.planner.rule.transformer;
    022
    023import cascading.flow.planner.iso.transformer.ContractedGraphTransformer;
    024import cascading.flow.planner.rule.PlanPhase;
    025import cascading.flow.planner.rule.RuleExpression;
    026import cascading.flow.planner.rule.RuleTransformer;
    027
    028/**
    029 *
    030 */
    031public class RuleContractedTransformer extends RuleTransformer
    032  {
    033  public RuleContractedTransformer( PlanPhase phase, RuleExpression ruleExpression )
    034    {
    035    super( phase, ruleExpression );
    036
    037    if( subGraphTransformer != null )
    038      graphTransformer = new ContractedGraphTransformer( subGraphTransformer, ruleExpression.getMatchExpression() );
    039    else if( contractedTransformer != null )
    040      graphTransformer = new ContractedGraphTransformer( contractedTransformer, ruleExpression.getMatchExpression() );
    041    else
    042      graphTransformer = new ContractedGraphTransformer( ruleExpression.getMatchExpression() );
    043    }
    044  }