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.../java/org/apache/doris/nereids/rules/expression/rules/RewriteRangePartitionPredicate.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.rules.expression.rules; | ||
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| import org.apache.doris.nereids.CascadesContext; | ||
| import org.apache.doris.nereids.trees.expressions.And; | ||
| import org.apache.doris.nereids.trees.expressions.Expression; | ||
| import org.apache.doris.nereids.trees.expressions.GreaterThanEqual; | ||
| import org.apache.doris.nereids.trees.expressions.InPredicate; | ||
| import org.apache.doris.nereids.trees.expressions.LessThanEqual; | ||
| import org.apache.doris.nereids.trees.expressions.literal.DateLiteral; | ||
| import org.apache.doris.nereids.trees.expressions.literal.DateTimeLiteral; | ||
| import org.apache.doris.nereids.trees.expressions.literal.Literal; | ||
| import org.apache.doris.nereids.trees.expressions.visitor.DefaultExpressionRewriter; | ||
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| /** | ||
| * F = '2022-01-01 00:01:01' or F = 'date2' or ... | ||
| * => | ||
| * min_date <= F <= max_date | ||
| */ | ||
| public class RewriteRangePartitionPredicate extends | ||
| DefaultExpressionRewriter<CascadesContext> { | ||
| private final double rangeLength; | ||
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| public RewriteRangePartitionPredicate(double rangeLength) { | ||
| this.rangeLength = rangeLength; | ||
| } | ||
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| public static Expression rewrite(Expression expression, double rangeLength, CascadesContext ctx) { | ||
| return expression.accept(new RewriteRangePartitionPredicate(rangeLength), ctx); | ||
| } | ||
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| @Override | ||
| public Expression visitInPredicate(InPredicate inPredicate, CascadesContext ctx) { | ||
| if (inPredicate.getOptions().size() > 10) { | ||
| Expression opt0 = inPredicate.getOptions().get(0); | ||
| if (opt0 instanceof DateLiteral || opt0 instanceof DateTimeLiteral) { | ||
| Literal minOpt = (Literal) inPredicate.getOptions().get(0); | ||
| Double minVal = minOpt.getDouble(); | ||
| Literal maxOpt = (Literal) inPredicate.getOptions().get(0); | ||
| Double maxVal = maxOpt.getDouble(); | ||
| for (int i = 1; i < inPredicate.getOptions().size(); i++) { | ||
| Expression opt = inPredicate.getOptions().get(i); | ||
| if (!(opt instanceof Literal)) { | ||
| return inPredicate; | ||
| } | ||
| double optValue = ((Literal) opt).getDouble(); | ||
| if (optValue < minVal) { | ||
| minVal = optValue; | ||
| minOpt = (Literal) opt; | ||
| } else if (optValue > maxVal) { | ||
| maxVal = optValue; | ||
| maxOpt = (Literal) opt; | ||
| } | ||
| } | ||
| double inToMinMaxThreshold = ctx.getConnectContext() | ||
| .getSessionVariable().inToMinmaxParitionRewriteThreshold; | ||
| if (((maxVal - minVal) / rangeLength) < inToMinMaxThreshold) { | ||
| return new And( | ||
| new GreaterThanEqual(inPredicate.getCompareExpr(), minOpt), | ||
| new LessThanEqual(inPredicate.getCompareExpr(), maxOpt)); | ||
| } | ||
| } | ||
| } | ||
| return inPredicate; | ||
| } | ||
| } |
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