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, org.apache.flink.table.functions.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(org.apache.flink.table.types.logical.DecimalType decimalType)

Method Summary

Modifier and Type	Method and Description
org.apache.flink.table.types.DataType	getResultType() The result type of the function.
protected org.apache.flink.table.expressions.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(org.apache.flink.table.types.logical.DecimalType decimalType)

Method Detail

getResultType

public org.apache.flink.table.types.DataType getResultType()

Description copied from class: DeclarativeAggregateFunction

The result type of the function.

Specified by:

getResultType in class DeclarativeAggregateFunction

zeroLiteral

protected org.apache.flink.table.expressions.Expression zeroLiteral()

Specified by:

zeroLiteral in class IncrSumWithRetractAggFunction