001/* 002 * Copyright (c) 2007-2015 Concurrent, 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.expression.ElementCapture; 024import cascading.flow.planner.iso.transformer.InsertionGraphTransformer; 025import cascading.flow.planner.rule.PlanPhase; 026import cascading.flow.planner.rule.RuleExpression; 027import cascading.flow.planner.rule.RuleTransformer; 028 029/** 030 * 031 */ 032public class RuleInsertionTransformer extends RuleTransformer 033 { 034 public RuleInsertionTransformer( PlanPhase phase, RuleExpression ruleExpression, String factoryName ) 035 { 036 this( phase, ruleExpression, null, factoryName ); 037 } 038 039 public RuleInsertionTransformer( PlanPhase phase, RuleExpression ruleExpression, String factoryName, InsertionGraphTransformer.Insertion insertAfter ) 040 { 041 this( phase, ruleExpression, null, factoryName, insertAfter ); 042 } 043 044 public RuleInsertionTransformer( PlanPhase phase, RuleExpression ruleExpression, ElementCapture capture, String factoryName ) 045 { 046 this( phase, ruleExpression, capture, factoryName, InsertionGraphTransformer.Insertion.After ); 047 } 048 049 public RuleInsertionTransformer( PlanPhase phase, RuleExpression ruleExpression, ElementCapture capture, String factoryName, InsertionGraphTransformer.Insertion insertion ) 050 { 051 super( phase, ruleExpression ); 052 053 if( subGraphTransformer != null ) 054 graphTransformer = new InsertionGraphTransformer( subGraphTransformer, ruleExpression.getMatchExpression(), capture, factoryName, insertion ); 055 else if( contractedTransformer != null ) 056 graphTransformer = new InsertionGraphTransformer( contractedTransformer, ruleExpression.getMatchExpression(), capture, factoryName, insertion ); 057 else 058 graphTransformer = new InsertionGraphTransformer( ruleExpression.getMatchExpression(), capture, factoryName, insertion ); 059 } 060 }