Class Sum0AggFunction.DoubleSum0AggFunction
- java.lang.Object
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- org.apache.flink.table.functions.UserDefinedFunction
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- org.apache.flink.table.functions.DeclarativeAggregateFunction
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- org.apache.flink.table.planner.functions.aggfunctions.Sum0AggFunction
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- org.apache.flink.table.planner.functions.aggfunctions.Sum0AggFunction.DoubleSum0AggFunction
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- All Implemented Interfaces:
Serializable
,FunctionDefinition
- Enclosing class:
- Sum0AggFunction
public static class Sum0AggFunction.DoubleSum0AggFunction extends Sum0AggFunction
Built-in Double Sum0 aggregate function.- See Also:
- Serialized Form
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Nested Class Summary
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Nested classes/interfaces inherited from class org.apache.flink.table.planner.functions.aggfunctions.Sum0AggFunction
Sum0AggFunction.ByteSum0AggFunction, Sum0AggFunction.DecimalSum0AggFunction, Sum0AggFunction.DoubleSum0AggFunction, Sum0AggFunction.FloatSum0AggFunction, Sum0AggFunction.IntSum0AggFunction, Sum0AggFunction.LongSum0AggFunction, Sum0AggFunction.ShortSum0AggFunction
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Constructor Summary
Constructors Constructor Description DoubleSum0AggFunction()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description DataType
getResultType()
The result type of the function.Expression[]
initialValuesExpressions()
Expressions for initializing empty aggregation buffers.-
Methods inherited from class org.apache.flink.table.planner.functions.aggfunctions.Sum0AggFunction
accumulateExpressions, adjustedMinus, adjustedPlus, aggBufferAttributes, getAggBufferTypes, getValueExpression, mergeExpressions, operandCount, retractExpressions
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Methods inherited from class org.apache.flink.table.functions.DeclarativeAggregateFunction
getKind, getTypeInference, mergeOperand, mergeOperands, operand, operands
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Methods inherited from class org.apache.flink.table.functions.UserDefinedFunction
close, functionIdentifier, open, toString
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
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Methods inherited from interface org.apache.flink.table.functions.FunctionDefinition
getRequirements, isDeterministic, supportsConstantFolding
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Method Detail
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getResultType
public DataType getResultType()
Description copied from class:DeclarativeAggregateFunction
The result type of the function.- Specified by:
getResultType
in classDeclarativeAggregateFunction
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initialValuesExpressions
public Expression[] initialValuesExpressions()
Description copied from class:DeclarativeAggregateFunction
Expressions for initializing empty aggregation buffers.- Specified by:
initialValuesExpressions
in classDeclarativeAggregateFunction
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