| /* |
| * 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.asterix.bad.lang; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.apache.asterix.bad.rules.InsertBrokerNotifierForChannelRule; |
| import org.apache.asterix.compiler.provider.DefaultRuleSetFactory; |
| import org.apache.asterix.compiler.provider.IRuleSetFactory; |
| import org.apache.asterix.optimizer.base.RuleCollections; |
| import org.apache.asterix.optimizer.rules.UnnestToDataScanRule; |
| import org.apache.hyracks.algebricks.common.exceptions.AlgebricksException; |
| import org.apache.hyracks.algebricks.common.utils.Pair; |
| import org.apache.hyracks.algebricks.compiler.rewriter.rulecontrollers.SequentialOnceRuleController; |
| import org.apache.hyracks.algebricks.core.rewriter.base.AbstractRuleController; |
| import org.apache.hyracks.algebricks.core.rewriter.base.IAlgebraicRewriteRule; |
| |
| public class BADRuleSetFactory implements IRuleSetFactory { |
| |
| @Override |
| public List<Pair<AbstractRuleController, List<IAlgebraicRewriteRule>>> getLogicalRewrites() |
| throws AlgebricksException { |
| List<Pair<AbstractRuleController, List<IAlgebraicRewriteRule>>> logicalRuleSet = DefaultRuleSetFactory.buildLogical(); |
| |
| List<IAlgebraicRewriteRule> normalizationCollection = RuleCollections.buildNormalizationRuleCollection(); |
| List<IAlgebraicRewriteRule> alteredNormalizationCollection = new ArrayList<>(); |
| alteredNormalizationCollection.addAll(normalizationCollection); |
| |
| //Create a normalization collection that includes the broker rule |
| for (int i = 0; i < alteredNormalizationCollection.size(); i++) { |
| IAlgebraicRewriteRule rule = alteredNormalizationCollection.get(i); |
| if (rule instanceof UnnestToDataScanRule) { |
| alteredNormalizationCollection.add(i + 1, new InsertBrokerNotifierForChannelRule()); |
| break; |
| } |
| } |
| |
| //Find instances of the normalization collection and replace them with the new one |
| SequentialOnceRuleController seqOnceCtrl = new SequentialOnceRuleController(true); |
| for (int i =0; i < logicalRuleSet.size(); i++){ |
| List<IAlgebraicRewriteRule> collection = logicalRuleSet.get(i).second; |
| if (collection.size() == normalizationCollection.size()) { |
| boolean isNormalizationCollection = true; |
| for (int j = 0; j < collection.size(); j++) { |
| //Make sure the set of rules is the same |
| if (!collection.get(j).getClass().equals(normalizationCollection.get(j).getClass())) { |
| isNormalizationCollection = false; |
| break; |
| } |
| } |
| if (isNormalizationCollection) { |
| //replace with the new collection |
| logicalRuleSet.set(i, new Pair<>(seqOnceCtrl, alteredNormalizationCollection)); |
| } |
| } |
| } |
| return logicalRuleSet; |
| } |
| |
| @Override |
| public List<Pair<AbstractRuleController, List<IAlgebraicRewriteRule>>> getPhysicalRewrites() { |
| return DefaultRuleSetFactory.buildPhysical(); |
| } |
| } |