| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.wayang.iejoin.mapping.spark; |
| |
| import org.apache.wayang.basic.data.Record; |
| import org.apache.wayang.core.mapping.Mapping; |
| import org.apache.wayang.core.mapping.OperatorPattern; |
| import org.apache.wayang.core.mapping.PlanTransformation; |
| import org.apache.wayang.core.mapping.ReplacementSubplanFactory; |
| import org.apache.wayang.core.mapping.SubplanMatch; |
| import org.apache.wayang.core.mapping.SubplanPattern; |
| import org.apache.wayang.core.plan.wayangplan.Operator; |
| import org.apache.wayang.core.types.DataSetType; |
| import org.apache.wayang.iejoin.operators.IEJoinMasterOperator; |
| import org.apache.wayang.iejoin.operators.IESelfJoinOperator; |
| import org.apache.wayang.iejoin.operators.SparkIESelfJoinOperator; |
| import org.apache.wayang.spark.platform.SparkPlatform; |
| |
| import java.util.Collection; |
| import java.util.Collections; |
| |
| /** |
| * Mapping from {@link IESelfJoinOperator} to {@link SparkIESelfJoinOperator}. |
| */ |
| public class IESelfJoinMapping implements Mapping { |
| |
| @Override |
| public Collection<PlanTransformation> getTransformations() { |
| return Collections.singleton(new PlanTransformation(this.createSubplanPattern(), new ReplacementFactory(), |
| SparkPlatform.getInstance())); |
| } |
| |
| private SubplanPattern createSubplanPattern() { |
| final OperatorPattern operatorPattern = new OperatorPattern( |
| "ieselfjoin", new IESelfJoinOperator<>(DataSetType.none(), null, IEJoinMasterOperator.JoinCondition.GreaterThan, null, IEJoinMasterOperator.JoinCondition.GreaterThan), false); |
| return SubplanPattern.createSingleton(operatorPattern); |
| } |
| |
| private static class ReplacementFactory<InputType0 extends Record, InputType1 extends Record, |
| Type0 extends Comparable<Type0>, Type1 extends Comparable<Type1>> extends ReplacementSubplanFactory { |
| |
| @Override |
| protected Operator translate(SubplanMatch subplanMatch, int epoch) { |
| final IESelfJoinOperator<?, ?, ?> originalOperator = (IESelfJoinOperator<?, ?, ?>) subplanMatch.getMatch("ieselfjoin").getOperator(); |
| return new SparkIESelfJoinOperator(originalOperator.getInputType(), originalOperator.getGet0Pivot(), originalOperator.getCond0(), originalOperator.getGet0Ref(), originalOperator.getCond1()).at(epoch); |
| } |
| } |
| } |