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125
fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/agg/Sum0.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. | ||
|
|
||
| package org.apache.doris.nereids.trees.expressions.functions.agg; | ||
|
|
||
| import org.apache.doris.catalog.FunctionSignature; | ||
| import org.apache.doris.nereids.exceptions.AnalysisException; | ||
| import org.apache.doris.nereids.trees.expressions.Expression; | ||
| import org.apache.doris.nereids.trees.expressions.functions.AlwaysNotNullable; | ||
| import org.apache.doris.nereids.trees.expressions.functions.ComputePrecisionForSum; | ||
| import org.apache.doris.nereids.trees.expressions.functions.ExplicitlyCastableSignature; | ||
| import org.apache.doris.nereids.trees.expressions.functions.Function; | ||
| import org.apache.doris.nereids.trees.expressions.functions.window.SupportWindowAnalytic; | ||
| import org.apache.doris.nereids.trees.expressions.shape.UnaryExpression; | ||
| import org.apache.doris.nereids.trees.expressions.visitor.ExpressionVisitor; | ||
| import org.apache.doris.nereids.types.BigIntType; | ||
| import org.apache.doris.nereids.types.BooleanType; | ||
| import org.apache.doris.nereids.types.DataType; | ||
| import org.apache.doris.nereids.types.DecimalV3Type; | ||
| import org.apache.doris.nereids.types.DoubleType; | ||
| import org.apache.doris.nereids.types.FloatType; | ||
| import org.apache.doris.nereids.types.IntegerType; | ||
| import org.apache.doris.nereids.types.LargeIntType; | ||
| import org.apache.doris.nereids.types.SmallIntType; | ||
| import org.apache.doris.nereids.types.TinyIntType; | ||
|
|
||
| import com.google.common.base.Preconditions; | ||
| import com.google.common.collect.ImmutableList; | ||
|
|
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| import java.util.List; | ||
|
|
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| /** | ||
| * AggregateFunction 'sum0'. sum0 returns the sum of the values which go into it like sum. | ||
| * It differs in that when no non null values are applied zero is returned instead of null. | ||
| */ | ||
| public class Sum0 extends AggregateFunction | ||
| implements UnaryExpression, AlwaysNotNullable, ExplicitlyCastableSignature, ComputePrecisionForSum, | ||
| SupportWindowAnalytic, CouldRollUp { | ||
|
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| public static final List<FunctionSignature> SIGNATURES = ImmutableList.of( | ||
| FunctionSignature.ret(BigIntType.INSTANCE).args(BooleanType.INSTANCE), | ||
| FunctionSignature.ret(BigIntType.INSTANCE).args(TinyIntType.INSTANCE), | ||
| FunctionSignature.ret(BigIntType.INSTANCE).args(SmallIntType.INSTANCE), | ||
| FunctionSignature.ret(BigIntType.INSTANCE).args(IntegerType.INSTANCE), | ||
| FunctionSignature.ret(BigIntType.INSTANCE).args(BigIntType.INSTANCE), | ||
| FunctionSignature.ret(LargeIntType.INSTANCE).args(LargeIntType.INSTANCE), | ||
| FunctionSignature.ret(DecimalV3Type.WILDCARD).args(DecimalV3Type.WILDCARD), | ||
| FunctionSignature.ret(DoubleType.INSTANCE).args(DoubleType.INSTANCE) | ||
| ); | ||
|
|
||
| /** | ||
| * constructor with 1 argument. | ||
| */ | ||
| public Sum0(Expression arg) { | ||
| this(false, arg); | ||
| } | ||
|
|
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| /** | ||
| * constructor with 2 argument. | ||
| */ | ||
| public Sum0(boolean distinct, Expression arg) { | ||
| super("sum0", distinct, arg); | ||
| } | ||
|
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| public MultiDistinctSum convertToMultiDistinct() { | ||
| Preconditions.checkArgument(distinct, | ||
| "can't convert to multi_distinct_sum because there is no distinct args"); | ||
| return new MultiDistinctSum(false, child()); | ||
| } | ||
|
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| @Override | ||
| public void checkLegalityBeforeTypeCoercion() { | ||
| DataType argType = child().getDataType(); | ||
| if ((!argType.isNumericType() && !argType.isBooleanType() && !argType.isNullType()) | ||
| || argType.isOnlyMetricType()) { | ||
| throw new AnalysisException("sum requires a numeric or boolean parameter: " + this.toSql()); | ||
| } | ||
| } | ||
|
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||
| /** | ||
| * withDistinctAndChildren. | ||
| */ | ||
| @Override | ||
| public Sum0 withDistinctAndChildren(boolean distinct, List<Expression> children) { | ||
| Preconditions.checkArgument(children.size() == 1); | ||
| return new Sum0(distinct, children.get(0)); | ||
| } | ||
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| @Override | ||
| public <R, C> R accept(ExpressionVisitor<R, C> visitor, C context) { | ||
| return visitor.visitSum0(this, context); | ||
| } | ||
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| @Override | ||
| public List<FunctionSignature> getSignatures() { | ||
| return SIGNATURES; | ||
| } | ||
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| @Override | ||
| public FunctionSignature searchSignature(List<FunctionSignature> signatures) { | ||
| if (getArgument(0).getDataType() instanceof FloatType) { | ||
| return FunctionSignature.ret(DoubleType.INSTANCE).args(FloatType.INSTANCE); | ||
| } | ||
| return ExplicitlyCastableSignature.super.searchSignature(signatures); | ||
| } | ||
|
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| @Override | ||
| public Function constructRollUp(Expression param, Expression... varParams) { | ||
| return new Sum0(this.distinct, param); | ||
| } | ||
| } |
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