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[feature](nereids) Materialized view rewrite basic util implementation
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108 changes: 108 additions & 0 deletions
108
...-core/src/main/java/org/apache/doris/nereids/rules/exploration/mv/PredicatesSplitter.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,108 @@ | ||
| // 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. | ||
|
|
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| package org.apache.doris.nereids.rules.exploration.mv; | ||
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| import org.apache.doris.nereids.trees.expressions.Alias; | ||
| import org.apache.doris.nereids.trees.expressions.Cast; | ||
| import org.apache.doris.nereids.trees.expressions.ComparisonPredicate; | ||
| import org.apache.doris.nereids.trees.expressions.CompoundPredicate; | ||
| import org.apache.doris.nereids.trees.expressions.EqualTo; | ||
| import org.apache.doris.nereids.trees.expressions.Expression; | ||
| import org.apache.doris.nereids.trees.expressions.NullSafeEqual; | ||
| import org.apache.doris.nereids.trees.expressions.Or; | ||
| import org.apache.doris.nereids.trees.expressions.SlotReference; | ||
| import org.apache.doris.nereids.trees.expressions.literal.Literal; | ||
| import org.apache.doris.nereids.trees.expressions.visitor.DefaultExpressionVisitor; | ||
| import org.apache.doris.nereids.util.ExpressionUtils; | ||
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| import java.util.ArrayList; | ||
| import java.util.List; | ||
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| /** | ||
| * Split the expression to equal, range and residual predicate. | ||
| * Should instance when used. | ||
| */ | ||
| public class PredicatesSplitter { | ||
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| private List<Expression> equalPredicates = new ArrayList<>(); | ||
| private List<Expression> rangePredicates = new ArrayList<>(); | ||
| private List<Expression> residualPredicates = new ArrayList<>(); | ||
| private List<Expression> conjunctExpressions; | ||
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| private final PredicateExtract instance = new PredicateExtract(); | ||
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| public PredicatesSplitter(Expression target) { | ||
| this.conjunctExpressions = ExpressionUtils.extractConjunction(target); | ||
| for (Expression expression : conjunctExpressions) { | ||
| expression.accept(instance, expression); | ||
| } | ||
| } | ||
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| /**PredicateExtract*/ | ||
| public class PredicateExtract extends DefaultExpressionVisitor<Void, Expression> { | ||
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| @Override | ||
| public Void visitComparisonPredicate(ComparisonPredicate comparisonPredicate, Expression sourceExpression) { | ||
| Expression leftArg = comparisonPredicate.getArgument(0); | ||
| Expression rightArg = comparisonPredicate.getArgument(1); | ||
| boolean leftArgOnlyContainsColumnRef = containOnlyColumnRef(leftArg, true); | ||
| boolean rightArgOnlyContainsColumnRef = containOnlyColumnRef(rightArg, true); | ||
| if (comparisonPredicate instanceof EqualTo || comparisonPredicate instanceof NullSafeEqual) { | ||
| if (leftArgOnlyContainsColumnRef && rightArgOnlyContainsColumnRef) { | ||
| equalPredicates.add(comparisonPredicate); | ||
| return null; | ||
| } | ||
| } else if ((leftArgOnlyContainsColumnRef && rightArg instanceof Literal) | ||
| || (rightArgOnlyContainsColumnRef && leftArg instanceof Literal)) { | ||
| rangePredicates.add(comparisonPredicate); | ||
| } else { | ||
| residualPredicates.add(comparisonPredicate); | ||
| } | ||
| return null; | ||
| } | ||
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| @Override | ||
| public Void visitCompoundPredicate(CompoundPredicate compoundPredicate, Expression context) { | ||
| if (compoundPredicate instanceof Or) { | ||
| residualPredicates.add(compoundPredicate); | ||
| return null; | ||
| } | ||
| return super.visitCompoundPredicate(compoundPredicate, context); | ||
| } | ||
| } | ||
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| public Predicates.SplitPredicate getSplitPredicate() { | ||
| return Predicates.SplitPredicate.of( | ||
| equalPredicates.isEmpty() ? null : ExpressionUtils.and(equalPredicates), | ||
| rangePredicates.isEmpty() ? null : ExpressionUtils.and(rangePredicates), | ||
| residualPredicates.isEmpty() ? null : ExpressionUtils.and(residualPredicates)); | ||
| } | ||
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| private static boolean containOnlyColumnRef(Expression expression, boolean allowCast) { | ||
| if (expression instanceof SlotReference && ((SlotReference) expression).isColumnFromTable()) { | ||
| return true; | ||
| } | ||
| if (allowCast && expression instanceof Cast) { | ||
| return containOnlyColumnRef(((Cast) expression).child(), true); | ||
| } | ||
| if (expression instanceof Alias) { | ||
| return containOnlyColumnRef(((Alias) expression).child(), true); | ||
| } | ||
| return false; | ||
| } | ||
| } |
63 changes: 0 additions & 63 deletions
63
fe/fe-core/src/main/java/org/apache/doris/nereids/rules/exploration/mv/RelationMapping.java
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48 changes: 48 additions & 0 deletions
48
...in/java/org/apache/doris/nereids/rules/exploration/mv/mapping/ExpressionIndexMapping.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,48 @@ | ||
| // 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. | ||
|
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| package org.apache.doris.nereids.rules.exploration.mv.mapping; | ||
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| import org.apache.doris.nereids.trees.expressions.Expression; | ||
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| import com.google.common.collect.ArrayListMultimap; | ||
| import com.google.common.collect.Multimap; | ||
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| import java.util.List; | ||
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| /** | ||
| * Expression and it's index mapping | ||
| */ | ||
| public class ExpressionIndexMapping extends Mapping { | ||
| private final Multimap<Expression, Integer> expressionIndexMapping; | ||
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| public ExpressionIndexMapping(Multimap<Expression, Integer> expressionIndexMapping) { | ||
| this.expressionIndexMapping = expressionIndexMapping; | ||
| } | ||
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| public Multimap<Expression, Integer> getExpressionIndexMapping() { | ||
| return expressionIndexMapping; | ||
| } | ||
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| public static ExpressionIndexMapping generate(List<? extends Expression> expressions) { | ||
| Multimap<Expression, Integer> expressionIndexMapping = ArrayListMultimap.create(); | ||
| for (int i = 0; i < expressions.size(); i++) { | ||
| expressionIndexMapping.put(expressions.get(i), i); | ||
| } | ||
| return new ExpressionIndexMapping(expressionIndexMapping); | ||
| } | ||
| } |
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