Package org.apache.flink.table.runtime.functions.aggregate

Class ListAggWithRetractAggFunction

java.lang.Object

org.apache.flink.table.functions.UserDefinedFunction

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

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

org.apache.flink.table.runtime.functions.aggregate.BuiltInAggregateFunction<org.apache.flink.table.data.StringData,ListAggWithRetractAggFunction.ListAggWithRetractAccumulator>

org.apache.flink.table.runtime.functions.aggregate.ListAggWithRetractAggFunction

All Implemented Interfaces:

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

@Internal
public final class ListAggWithRetractAggFunction
extends BuiltInAggregateFunction<org.apache.flink.table.data.StringData,ListAggWithRetractAggFunction.ListAggWithRetractAccumulator>

Built-in LISTAGG with retraction aggregate function.

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	ListAggWithRetractAggFunction.ListAggWithRetractAccumulator	Accumulator for LISTAGG with retraction.

Constructor Summary

Constructors

Constructor	Description
ListAggWithRetractAggFunction()

Method Summary

Modifier and Type	Method	Description
void	accumulate(ListAggWithRetractAggFunction.ListAggWithRetractAccumulator acc, org.apache.flink.table.data.StringData value)
ListAggWithRetractAggFunction.ListAggWithRetractAccumulator	createAccumulator()
org.apache.flink.table.types.DataType	getAccumulatorDataType()
List<org.apache.flink.table.types.DataType>	getArgumentDataTypes()
org.apache.flink.table.types.DataType	getOutputDataType()
org.apache.flink.table.data.StringData	getValue(ListAggWithRetractAggFunction.ListAggWithRetractAccumulator acc)
void	merge(ListAggWithRetractAggFunction.ListAggWithRetractAccumulator acc, Iterable<ListAggWithRetractAggFunction.ListAggWithRetractAccumulator> its)
void	resetAccumulator(ListAggWithRetractAggFunction.ListAggWithRetractAccumulator acc)
void	retract(ListAggWithRetractAggFunction.ListAggWithRetractAccumulator acc, org.apache.flink.table.data.StringData value)

Methods inherited from class org.apache.flink.table.runtime.functions.aggregate.BuiltInAggregateFunction

getRequirements, getTypeInference, isDeterministic

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

getKind

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

getAccumulatorType, getResultType

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

supportsConstantFolding

Constructor Details

ListAggWithRetractAggFunction

public ListAggWithRetractAggFunction()

Method Details

getArgumentDataTypes

public List<org.apache.flink.table.types.DataType> getArgumentDataTypes()

Overrides:

getArgumentDataTypes in class BuiltInAggregateFunction<org.apache.flink.table.data.StringData,ListAggWithRetractAggFunction.ListAggWithRetractAccumulator>

getAccumulatorDataType

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

Overrides:

getAccumulatorDataType in class BuiltInAggregateFunction<org.apache.flink.table.data.StringData,ListAggWithRetractAggFunction.ListAggWithRetractAccumulator>

getOutputDataType

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

Overrides:

getOutputDataType in class BuiltInAggregateFunction<org.apache.flink.table.data.StringData,ListAggWithRetractAggFunction.ListAggWithRetractAccumulator>

createAccumulator

public ListAggWithRetractAggFunction.ListAggWithRetractAccumulator createAccumulator()

Specified by:

createAccumulator in class org.apache.flink.table.functions.ImperativeAggregateFunction<org.apache.flink.table.data.StringData,ListAggWithRetractAggFunction.ListAggWithRetractAccumulator>

accumulate

public void accumulate(ListAggWithRetractAggFunction.ListAggWithRetractAccumulator acc,
 org.apache.flink.table.data.StringData value)
                throws Exception

Throws:

Exception

retract

public void retract(ListAggWithRetractAggFunction.ListAggWithRetractAccumulator acc,
 org.apache.flink.table.data.StringData value)
             throws Exception

Throws:

Exception

merge

public void merge(ListAggWithRetractAggFunction.ListAggWithRetractAccumulator acc,
 Iterable<ListAggWithRetractAggFunction.ListAggWithRetractAccumulator> its)
           throws Exception

Throws:

Exception

getValue

public org.apache.flink.table.data.StringData getValue(ListAggWithRetractAggFunction.ListAggWithRetractAccumulator acc)

Specified by:

getValue in class org.apache.flink.table.functions.AggregateFunction<org.apache.flink.table.data.StringData,ListAggWithRetractAggFunction.ListAggWithRetractAccumulator>

resetAccumulator

public void resetAccumulator(ListAggWithRetractAggFunction.ListAggWithRetractAccumulator acc)