Package org.apache.flink.table.planner.functions.aggfunctions

Class Sum0AggFunction.DoubleSum0AggFunction

java.lang.Object

org.apache.flink.table.functions.UserDefinedFunction

org.apache.flink.table.functions.DeclarativeAggregateFunction

org.apache.flink.table.planner.functions.aggfunctions.Sum0AggFunction

org.apache.flink.table.planner.functions.aggfunctions.Sum0AggFunction.DoubleSum0AggFunction

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

Nested Class Summary

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

Constructor Summary

Constructors

Constructor	Description
DoubleSum0AggFunction()

Method Summary

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

Methods inherited from class org.apache.flink.table.functions.DeclarativeAggregateFunction

getKind, getTypeInference, mergeOperand, mergeOperands, operand, operands

Methods inherited from class org.apache.flink.table.functions.UserDefinedFunction

close, functionIdentifier, open, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.flink.table.functions.FunctionDefinition

getRequirements, isDeterministic, supportsConstantFolding

Constructor Detail

DoubleSum0AggFunction

public DoubleSum0AggFunction()

Method Detail

getResultType

public DataType getResultType()

Description copied from class: DeclarativeAggregateFunction

The result type of the function.

Specified by:

getResultType in class DeclarativeAggregateFunction

initialValuesExpressions

public Expression[] initialValuesExpressions()

Description copied from class: DeclarativeAggregateFunction

Expressions for initializing empty aggregation buffers.

Specified by:

initialValuesExpressions in class DeclarativeAggregateFunction