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

Class AvgAggFunction.DoubleAvgAggFunction

java.lang.Object

org.apache.flink.table.functions.UserDefinedFunction

org.apache.flink.table.functions.DeclarativeAggregateFunction

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

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

All Implemented Interfaces:

Serializable, org.apache.flink.table.functions.FunctionDefinition

Enclosing class:

AvgAggFunction

public static class AvgAggFunction.DoubleAvgAggFunction
extends AvgAggFunction

Built-in Double Avg aggregate function.

See Also:

• Serialized Form

Nested Class Summary

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

AvgAggFunction.ByteAvgAggFunction, AvgAggFunction.DecimalAvgAggFunction, AvgAggFunction.DoubleAvgAggFunction, AvgAggFunction.FloatAvgAggFunction, AvgAggFunction.IntAvgAggFunction, AvgAggFunction.LongAvgAggFunction, AvgAggFunction.ShortAvgAggFunction

Constructor Summary

Constructors

Constructor	Description
DoubleAvgAggFunction()

Method Summary

Modifier and Type	Method	Description
org.apache.flink.table.types.DataType	getResultType()
org.apache.flink.table.types.DataType	getSumType()
org.apache.flink.table.expressions.Expression[]	initialValuesExpressions()

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

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 Details

DoubleAvgAggFunction

public DoubleAvgAggFunction()

Method Details

getResultType

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

Specified by:

getResultType in class org.apache.flink.table.functions.DeclarativeAggregateFunction

getSumType

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

Specified by:

getSumType in class AvgAggFunction

initialValuesExpressions

public org.apache.flink.table.expressions.Expression[] initialValuesExpressions()

Overrides:

initialValuesExpressions in class AvgAggFunction