924060929 commented on code in PR #11454: URL: https://github.com/apache/doris/pull/11454#discussion_r936235006
########## fe/fe-core/src/main/java/org/apache/doris/nereids/rules/analysis/AnalyzeSubquery.java: ########## @@ -0,0 +1,172 @@ +// 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.analysis; + +import org.apache.doris.nereids.PlannerContext; +import org.apache.doris.nereids.rules.Rule; +import org.apache.doris.nereids.rules.RuleType; +import org.apache.doris.nereids.trees.expressions.BooleanLiteral; +import org.apache.doris.nereids.trees.expressions.Exists; +import org.apache.doris.nereids.trees.expressions.Expression; +import org.apache.doris.nereids.trees.expressions.InSubquery; +import org.apache.doris.nereids.trees.expressions.ScalarSubquery; +import org.apache.doris.nereids.trees.expressions.Slot; +import org.apache.doris.nereids.trees.expressions.SubqueryExpr; +import org.apache.doris.nereids.trees.plans.GroupPlan; +import org.apache.doris.nereids.trees.plans.JoinType; +import org.apache.doris.nereids.trees.plans.logical.LogicalAggregate; +import org.apache.doris.nereids.trees.plans.logical.LogicalApply; +import org.apache.doris.nereids.trees.plans.logical.LogicalCorrelatedJoin; +import org.apache.doris.nereids.trees.plans.logical.LogicalEnforceSingleRow; +import org.apache.doris.nereids.trees.plans.logical.LogicalFilter; +import org.apache.doris.nereids.trees.plans.logical.LogicalPlan; +import org.apache.doris.nereids.trees.plans.logical.LogicalProject; +import org.apache.doris.nereids.trees.plans.logical.LogicalSort; + +import com.google.common.collect.ImmutableList; +import com.google.common.collect.ImmutableList.Builder; + +import java.util.ArrayList; +import java.util.List; +import java.util.Optional; + +/** + * AnalyzeSubquery. translate from subquery to apply/correlatedJoin. + */ +public class AnalyzeSubquery implements AnalysisRuleFactory { + @Override + public List<Rule> buildRules() { + return ImmutableList.of( + RuleType.ANALYZE_PROJECT_SUBQUERY.build( + logicalProject().thenApply(ctx -> { + LogicalProject<GroupPlan> project = ctx.root; + List<SubqueryExpr> subqueryExprs = new ArrayList<>(); + project.getProjects() + .forEach(expr -> subqueryExprs.addAll(extractSubquery(expr))); + if (subqueryExprs.size() == 0) { + return project; + } + return new LogicalProject(project.getProjects(), + analyzedSubquery(subqueryExprs, + project.child(), ctx.plannerContext)); + }) + ), + RuleType.ANALYZE_FILTER_SUBQUERY.build( + logicalFilter().thenApply(ctx -> { + LogicalFilter<GroupPlan> filter = ctx.root; + List<SubqueryExpr> subqueryExprs = extractSubquery(filter.getPredicates()); + if (subqueryExprs.size() == 0) { + return filter; + } + return new LogicalFilter<>(filter.getPredicates(), + analyzedSubquery(subqueryExprs, + filter.child(), ctx.plannerContext)); + }) + ), + RuleType.ANALYZE_AGGREGATE_SUBQUERY.build( + logicalAggregate().thenApply(ctx -> { + LogicalAggregate<GroupPlan> agg = ctx.root; + List<SubqueryExpr> subqueryExprs = new ArrayList<>(); + agg.getGroupByExpressions().forEach(expr -> subqueryExprs.addAll(extractSubquery(expr))); + agg.getOutputExpressions().forEach(expr -> subqueryExprs.addAll(extractSubquery(expr))); + if (subqueryExprs.size() == 0) { + return agg; + } + return new LogicalAggregate<>(agg.getGroupByExpressions(), agg.getOutputExpressions(), + agg.isDisassembled(), agg.getAggPhase(), + analyzedSubquery(subqueryExprs, agg.child(), ctx.plannerContext)); + }) + ), + RuleType.ANALYZE_SORT_SUBQUERY.build( + logicalSort().thenApply(ctx -> { + LogicalSort<GroupPlan> sort = ctx.root; + List<SubqueryExpr> subqueryExprs = new ArrayList<>(); + sort.getOrderKeys().forEach(orderKey -> subqueryExprs.addAll(extractSubquery( + orderKey.getExpr()))); + if (subqueryExprs.size() == 0) { + return sort; + } + return new LogicalSort<>(sort.getOrderKeys(), + analyzedSubquery(subqueryExprs, sort.child(), ctx.plannerContext)); + }) + ) + ); + } + + private List<SubqueryExpr> extractSubquery(Expression expression) { + if (expression instanceof SubqueryExpr) { + return ImmutableList.of((SubqueryExpr) expression); + } + Builder<SubqueryExpr> builder = ImmutableList.<SubqueryExpr>builder(); + getAllSubquery(expression, builder); + return builder.build(); + } + + private void getAllSubquery(Expression expression, Builder builder) { + for (Expression expr : expression.children()) { + if (expr instanceof SubqueryExpr) { + builder.add(expr); + } else { + getAllSubquery(expr, builder); + } + } + } + + private LogicalPlan analyzedSubquery(List<SubqueryExpr> subqueryExprs, LogicalPlan childPlan, PlannerContext ctx) { + for (SubqueryExpr subqueryExpr : subqueryExprs) { + if (!subqueryExpr.isAnalyzed()) { + if (subqueryExpr instanceof InSubquery) { + return addInSubqueryApplyNodes((InSubquery) subqueryExpr, childPlan, ctx); + } else if (subqueryExpr instanceof ScalarSubquery) { + return addScalarSubqueryCorrelatedJoins((ScalarSubquery) subqueryExpr, childPlan, ctx); + } else if (subqueryExpr instanceof Exists) { + return addExistsApplyNodes((Exists) subqueryExpr, childPlan, ctx); + } + } + } + return childPlan; + } + + private LogicalPlan addScalarSubqueryCorrelatedJoins(ScalarSubquery scalarSubquery, + LogicalPlan childPlan, PlannerContext ctx) { + LogicalPlan enforce = new LogicalEnforceSingleRow<>(scalarSubquery.getQueryPlan()); + scalarSubquery.setAnalyzed(true); Review Comment: Immutable plan should not has mutable field. if we need some mutable state, we should depend the plan type to compute state, and change it when replace children e.g. UnboundExression.isAnalyzed() = false. other expression.isAnalyzed() = Suppliers.memoized(() -> children().allMatch(Expression::isAnalyzed)). -- This is an automated message from the Apache Git Service. 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