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

Class IncrSumWithRetractAggFunction.DecimalIncrSumWithRetractAggFunction

java.lang.Object

org.apache.flink.table.functions.UserDefinedFunction

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

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

org.apache.flink.table.planner.functions.aggfunctions.IncrSumWithRetractAggFunction.DecimalIncrSumWithRetractAggFunction

All Implemented Interfaces:

Serializable, FunctionDefinition

Enclosing class:

IncrSumWithRetractAggFunction

public static class IncrSumWithRetractAggFunction.DecimalIncrSumWithRetractAggFunction
extends IncrSumWithRetractAggFunction

Built-in Decimal IncrSum with retract aggregate function.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.flink.table.planner.functions.aggfunctions.IncrSumWithRetractAggFunction

IncrSumWithRetractAggFunction.ByteIncrSumWithRetractAggFunction, IncrSumWithRetractAggFunction.DecimalIncrSumWithRetractAggFunction, IncrSumWithRetractAggFunction.DoubleIncrSumWithRetractAggFunction, IncrSumWithRetractAggFunction.FloatIncrSumWithRetractAggFunction, IncrSumWithRetractAggFunction.IntIncrSumWithRetractAggFunction, IncrSumWithRetractAggFunction.LongIncrSumWithRetractAggFunction, IncrSumWithRetractAggFunction.ShortIncrSumWithRetractAggFunction

Constructor Summary

Constructors

Constructor and Description
DecimalIncrSumWithRetractAggFunction(DecimalType decimalType)

Method Summary

Modifier and Type	Method and Description
DataType	getResultType() The result type of the function.
protected Expression	zeroLiteral()

Methods inherited from class org.apache.flink.table.planner.functions.aggfunctions.IncrSumWithRetractAggFunction

accumulateExpressions, aggBufferAttributes, getAggBufferTypes, getValueExpression, initialValuesExpressions, mergeExpressions, operandCount, retractExpressions

Methods inherited from class org.apache.flink.table.planner.functions.aggfunctions.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

Constructor Detail

DecimalIncrSumWithRetractAggFunction

public DecimalIncrSumWithRetractAggFunction(DecimalType decimalType)

Method Detail

getResultType

public DataType getResultType()

Description copied from class: DeclarativeAggregateFunction

The result type of the function.

Specified by:

getResultType in class DeclarativeAggregateFunction

zeroLiteral

protected Expression zeroLiteral()

Specified by:

zeroLiteral in class IncrSumWithRetractAggFunction