xzj7019 commented on code in PR #40878: URL: https://github.com/apache/doris/pull/40878#discussion_r1777970156
########## fe/fe-core/src/main/java/org/apache/doris/nereids/rules/rewrite/ReplacePredicate.java: ########## @@ -0,0 +1,321 @@ +// 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.doris.nereids.rules.rewrite; + +import org.apache.doris.common.Pair; +import org.apache.doris.nereids.CascadesContext; +import org.apache.doris.nereids.analyzer.Scope; +import org.apache.doris.nereids.exceptions.AnalysisException; +import org.apache.doris.nereids.rules.analysis.ExpressionAnalyzer; +import org.apache.doris.nereids.rules.expression.ExpressionRewriteContext; +import org.apache.doris.nereids.trees.expressions.Cast; +import org.apache.doris.nereids.trees.expressions.ComparisonPredicate; +import org.apache.doris.nereids.trees.expressions.EqualTo; +import org.apache.doris.nereids.trees.expressions.Expression; +import org.apache.doris.nereids.trees.expressions.InPredicate; +import org.apache.doris.nereids.trees.expressions.Like; +import org.apache.doris.nereids.trees.expressions.Not; +import org.apache.doris.nereids.trees.expressions.Or; +import org.apache.doris.nereids.trees.expressions.Slot; +import org.apache.doris.nereids.trees.expressions.functions.ExpressionTrait; +import org.apache.doris.nereids.trees.expressions.literal.Literal; +import org.apache.doris.nereids.trees.expressions.visitor.DefaultExpressionRewriter; +import org.apache.doris.nereids.trees.expressions.visitor.ExpressionVisitor; +import org.apache.doris.nereids.trees.plans.Plan; +import org.apache.doris.nereids.types.DecimalV2Type; +import org.apache.doris.nereids.types.DecimalV3Type; +import org.apache.doris.nereids.util.ImmutableEqualSet; +import org.apache.doris.nereids.util.PredicateInferUtils; +import org.apache.doris.nereids.util.TypeCoercionUtils; + +import com.google.common.collect.ImmutableList; +import org.jetbrains.annotations.Nullable; + +import java.util.ArrayList; +import java.util.Comparator; +import java.util.HashMap; +import java.util.HashSet; +import java.util.LinkedHashSet; +import java.util.List; +import java.util.Map; +import java.util.Set; +import java.util.stream.Collectors; + +/**ReplacePredicate*/ +public class ReplacePredicate { + private static List<Expression> getAllSubExpressions(Expression expr) { + List<Expression> subExpressions = new ArrayList<>(); + getAllSubExpressions(expr, subExpressions); + return subExpressions; + } + + private static void getAllSubExpressions(Expression expr, List<Expression> res) { + res.add(expr); + if (expr.children().size() != 1) { + Set<Slot> slots = expr.getInputSlots(); + if (slots.size() == 1) { + res.add(slots.iterator().next()); + } + return; + } + getAllSubExpressions(expr.child(0), res); + } + + /** fill map exprPredicates : expression and all its corresponding predicates */ + private static class PredicatesCollector extends ExpressionVisitor<Void, Map<Expression, Set<Expression>>> { + public static PredicatesCollector INSTANCE = new PredicatesCollector(); + + @Override + public Void visit(Expression expr, Map<Expression, Set<Expression>> context) { + return null; + } + + @Override + public Void visitOr(Or expr, Map<Expression, Set<Expression>> context) { + return null; + } + + @Override + public Void visitInPredicate(InPredicate inPredicate, Map<Expression, Set<Expression>> context) { + if (!validInPredicate(inPredicate)) { + return null; + } + for (Expression expr : getAllSubExpressions(inPredicate.getCompareExpr())) { + context.computeIfAbsent(expr, k -> new LinkedHashSet<>()).add(inPredicate); + } + return null; + } + + @Override + public Void visitComparisonPredicate(ComparisonPredicate comparisonPredicate, + Map<Expression, Set<Expression>> context) { + if (!validComparisonPredicate(comparisonPredicate)) { + return null; + } + // It is believed that 1<a has been rewritten as a>1 + for (Expression expr : getAllSubExpressions(comparisonPredicate.child(0))) { + context.computeIfAbsent(expr, k -> new LinkedHashSet<>()).add(comparisonPredicate); + } + return null; + } + + @Override Review Comment: currently !=, don't open not in/not like -- This is an automated message from the Apache Git Service. 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