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

Class SingleValueAggFunction.DoubleSingleValueAggFunction

java.lang.Object

org.apache.flink.table.functions.UserDefinedFunction

org.apache.flink.table.functions.DeclarativeAggregateFunction

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

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

All Implemented Interfaces:

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

Enclosing class:

SingleValueAggFunction

public static final class SingleValueAggFunction.DoubleSingleValueAggFunction
extends SingleValueAggFunction

Built-in double single value aggregate function.

See Also:

• Serialized Form

Nested Class Summary

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

SingleValueAggFunction.BooleanSingleValueAggFunction, SingleValueAggFunction.ByteSingleValueAggFunction, SingleValueAggFunction.CharSingleValueAggFunction, SingleValueAggFunction.DateSingleValueAggFunction, SingleValueAggFunction.DecimalSingleValueAggFunction, SingleValueAggFunction.DoubleSingleValueAggFunction, SingleValueAggFunction.FloatSingleValueAggFunction, SingleValueAggFunction.IntSingleValueAggFunction, SingleValueAggFunction.LongSingleValueAggFunction, SingleValueAggFunction.ShortSingleValueAggFunction, SingleValueAggFunction.StringSingleValueAggFunction, SingleValueAggFunction.TimeSingleValueAggFunction, SingleValueAggFunction.TimestampLtzSingleValueAggFunction, SingleValueAggFunction.TimestampSingleValueAggFunction

Constructor Summary

Constructors

Constructor	Description
DoubleSingleValueAggFunction()

Method Summary

Modifier and Type	Method	Description
org.apache.flink.table.types.DataType	getResultType()

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

accumulateExpressions, aggBufferAttributes, getAggBufferTypes, getValueExpression, initialValuesExpressions, 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

DoubleSingleValueAggFunction

public DoubleSingleValueAggFunction()

Method Details

getResultType

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

Specified by:

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