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[feature](nereids)use mtmv to match legacy mv (apache#33699)
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194
fe/fe-core/src/main/java/org/apache/doris/nereids/parser/LogicalPlanBuilderForSyncMv.java
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| // 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.parser; | ||
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| import org.apache.doris.catalog.Env; | ||
| import org.apache.doris.catalog.FunctionRegistry; | ||
| import org.apache.doris.common.Pair; | ||
| import org.apache.doris.nereids.DorisParser; | ||
| import org.apache.doris.nereids.analyzer.UnboundFunction; | ||
| import org.apache.doris.nereids.trees.expressions.Expression; | ||
| import org.apache.doris.nereids.trees.expressions.NamedExpression; | ||
| import org.apache.doris.nereids.trees.expressions.functions.AggCombinerFunctionBuilder; | ||
| import org.apache.doris.nereids.trees.expressions.functions.BoundFunction; | ||
| import org.apache.doris.nereids.trees.expressions.functions.BuiltinFunctionBuilder; | ||
| import org.apache.doris.nereids.trees.expressions.functions.FunctionBuilder; | ||
| import org.apache.doris.nereids.trees.expressions.functions.agg.AggregateFunction; | ||
| import org.apache.doris.nereids.trees.expressions.visitor.DefaultExpressionRewriter; | ||
| import org.apache.doris.nereids.trees.plans.Plan; | ||
| import org.apache.doris.nereids.trees.plans.commands.CreateMTMVCommand; | ||
| import org.apache.doris.nereids.trees.plans.logical.LogicalAggregate; | ||
| import org.apache.doris.nereids.trees.plans.logical.LogicalPlan; | ||
| import org.apache.doris.nereids.util.PlanUtils; | ||
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|
||
| import com.google.common.collect.ImmutableList; | ||
|
|
||
| import java.util.List; | ||
| import java.util.Map; | ||
| import java.util.Optional; | ||
| import java.util.TreeMap; | ||
|
|
||
| /** | ||
| * LogicalPlanBuilderForSyncMv | ||
| */ | ||
| public class LogicalPlanBuilderForSyncMv extends LogicalPlanBuilder { | ||
| private Optional<String> querySql; | ||
|
|
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| public LogicalPlanBuilderForSyncMv() { | ||
| super(false); | ||
| } | ||
|
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| @Override | ||
| public Expression visitFunctionCallExpression(DorisParser.FunctionCallExpressionContext ctx) { | ||
| Expression expression = super.visitFunctionCallExpression(ctx); | ||
| if (expression instanceof UnboundFunction) { | ||
| return ((UnboundFunction) expression) | ||
| .withIndexInSqlString(Optional.of(new UnboundFunction.FunctionIndexInSql( | ||
| ctx.functionIdentifier().functionNameIdentifier().start.getStartIndex(), | ||
| ctx.functionIdentifier().functionNameIdentifier().stop.getStopIndex(), | ||
| ctx.stop.getStopIndex()))); | ||
| } else { | ||
| return expression; | ||
| } | ||
| } | ||
|
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| @Override | ||
| public LogicalPlan visitQuery(DorisParser.QueryContext ctx) { | ||
| LogicalPlan logicalPlan = super.visitQuery(ctx); | ||
| PlanUtils.OutermostPlanFinderContext outermostPlanFinderContext = | ||
| new PlanUtils.OutermostPlanFinderContext(); | ||
| logicalPlan.accept(PlanUtils.OutermostPlanFinder.INSTANCE, outermostPlanFinderContext); | ||
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| // find outermost logicalAggregate to rewrite agg_state related function | ||
| Plan outermostAgg = outermostPlanFinderContext.outermostPlan; | ||
| while (!(outermostAgg instanceof LogicalAggregate)) { | ||
| if (!outermostAgg.children().isEmpty()) { | ||
| outermostAgg = outermostAgg.child(0); | ||
| } else { | ||
| break; | ||
| } | ||
| } | ||
| String originSql = getOriginSql(ctx); | ||
| if (outermostAgg instanceof LogicalAggregate) { | ||
| List<NamedExpression> outputs = ((LogicalAggregate) outermostAgg).getOutputs(); | ||
| TreeMap<Pair<Integer, Integer>, String> indexInSqlToString = | ||
| new TreeMap<>(new Pair.PairComparator<>()); | ||
| AggStateFunctionFinder aggStateFunctionFinder = | ||
| new AggStateFunctionFinder(ctx.start.getStartIndex()); | ||
| for (Expression expr : outputs) { | ||
| aggStateFunctionFinder.find(expr, indexInSqlToString); | ||
| } | ||
| querySql = Optional.of(rewriteSql(originSql, indexInSqlToString)); | ||
| } else { | ||
| querySql = Optional.of(originSql); | ||
| } | ||
| return logicalPlan; | ||
| } | ||
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| @Override | ||
| public CreateMTMVCommand visitCreateMTMV(DorisParser.CreateMTMVContext ctx) { | ||
| visitQuery(ctx.query()); | ||
| return null; | ||
| } | ||
|
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| public Optional<String> getQuerySql() { | ||
| return querySql; | ||
| } | ||
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| private static class AggStateFunctionFinder | ||
| extends DefaultExpressionRewriter<TreeMap<Pair<Integer, Integer>, String>> { | ||
| private int sqlBeginIndex; | ||
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| private FunctionRegistry functionRegistry; | ||
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| public AggStateFunctionFinder(int sqlBeginIndex) { | ||
| this.sqlBeginIndex = sqlBeginIndex; | ||
| this.functionRegistry = Env.getCurrentEnv().getFunctionRegistry(); | ||
| } | ||
|
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| public Expression find(Expression expression, | ||
| TreeMap<Pair<Integer, Integer>, String> indexInSqlToNewString) { | ||
| return expression.accept(this, indexInSqlToNewString); | ||
| } | ||
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| @Override | ||
| public Expression visitUnboundFunction(UnboundFunction unboundFunction, | ||
| TreeMap<Pair<Integer, Integer>, String> indexInSqlToNewString) { | ||
| if (unboundFunction.getFunctionIndexInSql().isPresent()) { | ||
| // try bind agg function | ||
| List<Object> arguments = unboundFunction.isDistinct() | ||
| ? ImmutableList.builder().add(unboundFunction.isDistinct()) | ||
| .addAll(unboundFunction.getArguments()).build() | ||
| : (List) unboundFunction.getArguments(); | ||
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| String functionName = unboundFunction.getName(); | ||
| FunctionBuilder builder = functionRegistry | ||
| .findFunctionBuilder(unboundFunction.getDbName(), functionName, arguments); | ||
| if (builder instanceof BuiltinFunctionBuilder) { | ||
| BoundFunction boundFunction = | ||
| (BoundFunction) builder.build(functionName, arguments).first; | ||
| if (boundFunction instanceof AggregateFunction) { | ||
| // rewrite to agg_state | ||
| UnboundFunction.FunctionIndexInSql functionIndexInSql = unboundFunction | ||
| .getFunctionIndexInSql().get().indexInQueryPart(sqlBeginIndex); | ||
| functionName = boundFunction.getName(); | ||
| switch (functionName) { | ||
| case "min": | ||
| case "max": | ||
| case "sum": | ||
| case "count": | ||
| case "bitmap_union": | ||
| case "hll_union": { | ||
| // no need rewrite | ||
| break; | ||
| } | ||
| default: { | ||
| indexInSqlToNewString.put( | ||
| Pair.of(functionIndexInSql.functionNameBegin, | ||
| functionIndexInSql.functionNameEnd), | ||
| String.format("%s%s(%s%s", functionName, | ||
| AggCombinerFunctionBuilder.UNION_SUFFIX, | ||
| functionName, | ||
| AggCombinerFunctionBuilder.STATE_SUFFIX)); | ||
| indexInSqlToNewString | ||
| .put(Pair.of(functionIndexInSql.functionExpressionEnd, | ||
| functionIndexInSql.functionExpressionEnd), "))"); | ||
| break; | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
| return unboundFunction; | ||
| } | ||
| } | ||
|
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||
| private static String rewriteSql(String querySql, | ||
| Map<Pair<Integer, Integer>, String> indexStringSqlMap) { | ||
| StringBuilder builder = new StringBuilder(); | ||
| int beg = 0; | ||
| for (Map.Entry<Pair<Integer, Integer>, String> entry : indexStringSqlMap.entrySet()) { | ||
| Pair<Integer, Integer> index = entry.getKey(); | ||
| builder.append(querySql, beg, index.first); | ||
| builder.append(entry.getValue()); | ||
| beg = index.second + 1; | ||
| } | ||
| builder.append(querySql, beg, querySql.length()); | ||
| return builder.toString(); | ||
| } | ||
| } |
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