    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.transformer;
    023
    024import cascading.flow.planner.iso.transformer.RemoveBranchGraphTransformer;
    025import cascading.flow.planner.rule.PlanPhase;
    026import cascading.flow.planner.rule.RuleExpression;
    027import cascading.flow.planner.rule.RuleTransformer;
    028import cascading.flow.planner.rule.util.LogLevel;
    029
    030/**
    031 *
    032 */
    033public class RuleRemoveBranchTransformer extends RuleTransformer
    034  {
    035  public RuleRemoveBranchTransformer( PlanPhase phase, RuleExpression ruleExpression )
    036    {
    037    this( null, phase, ruleExpression );
    038    }
    039
    040  public RuleRemoveBranchTransformer( LogLevel logLevel, PlanPhase phase, RuleExpression ruleExpression )
    041    {
    042    super( logLevel, phase, ruleExpression );
    043
    044    if( subGraphTransformer != null )
    045      graphTransformer = new RemoveBranchGraphTransformer( subGraphTransformer, ruleExpression.getMatchExpression() );
    046    else if( contractedTransformer != null )
    047      graphTransformer = new RemoveBranchGraphTransformer( contractedTransformer, ruleExpression.getMatchExpression() );
    048    else
    049      graphTransformer = new RemoveBranchGraphTransformer( ruleExpression.getMatchExpression() );
    050    }
    051  }