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

Class LastValueWithRetractAggFunction.IntLastValueWithRetractAggFunction

java.lang.Object

org.apache.flink.table.functions.UserDefinedFunction

org.apache.flink.table.functions.UserDefinedAggregateFunction<T,ACC>

org.apache.flink.table.functions.AggregateFunction<T,GenericRowData>

org.apache.flink.table.planner.functions.aggfunctions.LastValueWithRetractAggFunction<Integer>

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

All Implemented Interfaces:

Serializable, FunctionDefinition

Enclosing class:

LastValueWithRetractAggFunction<T>

public static class LastValueWithRetractAggFunction.IntLastValueWithRetractAggFunction
extends LastValueWithRetractAggFunction<Integer>

Built-in Int LastValue with retract aggregate function.

See Also:

Serialized Form

Nested Class Summary

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

LastValueWithRetractAggFunction.BooleanLastValueWithRetractAggFunction, LastValueWithRetractAggFunction.ByteLastValueWithRetractAggFunction, LastValueWithRetractAggFunction.DecimalLastValueWithRetractAggFunction, LastValueWithRetractAggFunction.DoubleLastValueWithRetractAggFunction, LastValueWithRetractAggFunction.FloatLastValueWithRetractAggFunction, LastValueWithRetractAggFunction.IntLastValueWithRetractAggFunction, LastValueWithRetractAggFunction.LongLastValueWithRetractAggFunction, LastValueWithRetractAggFunction.ShortLastValueWithRetractAggFunction, LastValueWithRetractAggFunction.StringLastValueWithRetractAggFunction

Constructor Summary

Constructors

Constructor and Description
IntLastValueWithRetractAggFunction()

Method Summary

Modifier and Type	Method and Description
protected TypeSerializer<Integer>	createValueSerializer()
TypeInformation<Integer>	getResultType() Returns the TypeInformation of the UserDefinedAggregateFunction's result.

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

accumulate, accumulate, createAccumulator, getAccumulatorType, getValue, resetAccumulator, retract, retract

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

getKind, getRequirements, getTypeInference, requiresOver

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

isDeterministic

Constructor Detail

IntLastValueWithRetractAggFunction

public IntLastValueWithRetractAggFunction()

Method Detail

getResultType

public TypeInformation<Integer> getResultType()

Description copied from class: UserDefinedAggregateFunction

Returns the TypeInformation of the UserDefinedAggregateFunction's result.

Overrides:

getResultType in class UserDefinedAggregateFunction<Integer,GenericRowData>

Returns:

The TypeInformation of the UserDefinedAggregateFunction's result or null if the result type should be automatically inferred.

createValueSerializer

protected TypeSerializer<Integer> createValueSerializer()

Specified by:

createValueSerializer in class LastValueWithRetractAggFunction<Integer>