924060929 commented on code in PR #48502: URL: https://github.com/apache/doris/pull/48502#discussion_r2083963243
########## fe/fe-core/src/main/java/org/apache/doris/nereids/rules/rewrite/SetPreAggStatus.java: ########## @@ -0,0 +1,589 @@ +// 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.catalog.AggregateType; +import org.apache.doris.catalog.KeysType; +import org.apache.doris.catalog.MaterializedIndexMeta; +import org.apache.doris.common.Pair; +import org.apache.doris.nereids.jobs.JobContext; +import org.apache.doris.nereids.trees.expressions.CaseWhen; +import org.apache.doris.nereids.trees.expressions.Cast; +import org.apache.doris.nereids.trees.expressions.Expression; +import org.apache.doris.nereids.trees.expressions.Slot; +import org.apache.doris.nereids.trees.expressions.SlotReference; +import org.apache.doris.nereids.trees.expressions.VirtualSlotReference; +import org.apache.doris.nereids.trees.expressions.WhenClause; +import org.apache.doris.nereids.trees.expressions.functions.agg.AggregateFunction; +import org.apache.doris.nereids.trees.expressions.functions.agg.BitmapUnion; +import org.apache.doris.nereids.trees.expressions.functions.agg.BitmapUnionCount; +import org.apache.doris.nereids.trees.expressions.functions.agg.Count; +import org.apache.doris.nereids.trees.expressions.functions.agg.HllUnion; +import org.apache.doris.nereids.trees.expressions.functions.agg.HllUnionAgg; +import org.apache.doris.nereids.trees.expressions.functions.agg.Max; +import org.apache.doris.nereids.trees.expressions.functions.agg.Min; +import org.apache.doris.nereids.trees.expressions.functions.agg.Sum; +import org.apache.doris.nereids.trees.expressions.functions.scalar.If; +import org.apache.doris.nereids.trees.expressions.literal.NullLiteral; +import org.apache.doris.nereids.trees.expressions.visitor.ExpressionVisitor; +import org.apache.doris.nereids.trees.plans.Plan; +import org.apache.doris.nereids.trees.plans.PreAggStatus; +import org.apache.doris.nereids.trees.plans.RelationId; +import org.apache.doris.nereids.trees.plans.logical.LogicalAggregate; +import org.apache.doris.nereids.trees.plans.logical.LogicalFilter; +import org.apache.doris.nereids.trees.plans.logical.LogicalJoin; +import org.apache.doris.nereids.trees.plans.logical.LogicalOlapScan; +import org.apache.doris.nereids.trees.plans.logical.LogicalProject; +import org.apache.doris.nereids.trees.plans.logical.LogicalRepeat; +import org.apache.doris.nereids.trees.plans.visitor.CustomRewriter; +import org.apache.doris.nereids.trees.plans.visitor.DefaultPlanRewriter; +import org.apache.doris.nereids.util.ExpressionUtils; + +import com.google.common.base.Preconditions; +import com.google.common.collect.ImmutableList; +import com.google.common.collect.Lists; +import com.google.common.collect.Sets; + +import java.util.ArrayList; +import java.util.HashMap; +import java.util.HashSet; +import java.util.List; +import java.util.Map; +import java.util.Set; +import java.util.Stack; + +/** + * SetPreAggStatus + * bottom-up tranverse the plan tree and collect required info into PreAggInfoContext + * when get to the bottom LogicalOlapScan node, we set the preagg status using info in PreAggInfoContext + */ +public class SetPreAggStatus extends DefaultPlanRewriter<Stack<SetPreAggStatus.PreAggInfoContext>> + implements CustomRewriter { + private Map<RelationId, PreAggInfoContext> olapScanPreAggContexts = new HashMap<>(); + + /** + * PreAggInfoContext + */ + public static class PreAggInfoContext { + private List<Expression> filterConjuncts = new ArrayList<>(); + private List<Expression> joinConjuncts = new ArrayList<>(); + private List<Expression> groupByExpresssions = new ArrayList<>(); + private Set<AggregateFunction> aggregateFunctions = new HashSet<>(); + private Set<RelationId> olapScanIds = new HashSet<>(); + + private Map<Slot, Expression> replaceMap = new HashMap<>(); + + private void setReplaceMap(Map<Slot, Expression> replaceMap) { + this.replaceMap = replaceMap; + } + + private void addRelationId(RelationId id) { + olapScanIds.add(id); + } + + private void addJoinInfo(LogicalJoin logicalJoin) { + joinConjuncts.addAll(logicalJoin.getExpressions()); + joinConjuncts = Lists.newArrayList(ExpressionUtils.replace(joinConjuncts, replaceMap)); + } + + private void addFilterConjuncts(List<Expression> conjuncts) { + filterConjuncts.addAll(conjuncts); + filterConjuncts = Lists.newArrayList(ExpressionUtils.replace(filterConjuncts, replaceMap)); + } + + private void addGroupByExpresssions(List<Expression> expressions) { + groupByExpresssions.addAll(expressions); + groupByExpresssions = Lists.newArrayList(ExpressionUtils.replace(groupByExpresssions, replaceMap)); + } + + private void addAggregateFunctions(Set<AggregateFunction> functions) { + aggregateFunctions.addAll(functions); + Set<AggregateFunction> newAggregateFunctions = Sets.newHashSet(); + for (AggregateFunction aggregateFunction : aggregateFunctions) { + newAggregateFunctions + .add((AggregateFunction) ExpressionUtils.replace(aggregateFunction, replaceMap)); + } + aggregateFunctions = newAggregateFunctions; + } + } + + @Override + public Plan rewriteRoot(Plan plan, JobContext jobContext) { + Plan newPlan = plan.accept(this, new Stack<>()); + return newPlan.accept(new SetOlapScanPreAgg(), olapScanPreAggContexts); + } + + @Override + public Plan visit(Plan plan, Stack<PreAggInfoContext> context) { + Plan newPlan = super.visit(plan, context); + context.clear(); Review Comment: can this plan use the preagg? ``` LogicalUnion +-- LogicalAggregate | +-- LogicalOlapScan +-- LogicalAggregate +-- LogicalOlapScan ``` -- This is an automated message from the Apache Git Service. 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