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

Class ListAggWsWithRetractAggFunction

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,ListAggWsWithRetractAggFunction.ListAggWsWithRetractAccumulator>

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

All Implemented Interfaces:

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

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

Built-in LISTAGGWS with retraction aggregate function.

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	ListAggWsWithRetractAggFunction.ListAggWsWithRetractAccumulator	Accumulator for LISTAGGWS with retraction.

Constructor Summary

Constructors

Constructor	Description
ListAggWsWithRetractAggFunction()

Method Summary

Modifier and Type	Method	Description
void	accumulate(ListAggWsWithRetractAggFunction.ListAggWsWithRetractAccumulator acc, org.apache.flink.table.data.StringData value, org.apache.flink.table.data.StringData lineDelimiter)
ListAggWsWithRetractAggFunction.ListAggWsWithRetractAccumulator	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(ListAggWsWithRetractAggFunction.ListAggWsWithRetractAccumulator acc)
void	merge(ListAggWsWithRetractAggFunction.ListAggWsWithRetractAccumulator acc, Iterable<ListAggWsWithRetractAggFunction.ListAggWsWithRetractAccumulator> its)
void	resetAccumulator(ListAggWsWithRetractAggFunction.ListAggWsWithRetractAccumulator acc)
void	retract(ListAggWsWithRetractAggFunction.ListAggWsWithRetractAccumulator acc, org.apache.flink.table.data.StringData value, org.apache.flink.table.data.StringData lineDelimiter)

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

ListAggWsWithRetractAggFunction

public ListAggWsWithRetractAggFunction()

Method Details

getArgumentDataTypes

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

Overrides:

getArgumentDataTypes in class BuiltInAggregateFunction<org.apache.flink.table.data.StringData,ListAggWsWithRetractAggFunction.ListAggWsWithRetractAccumulator>

getAccumulatorDataType

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

Overrides:

getAccumulatorDataType in class BuiltInAggregateFunction<org.apache.flink.table.data.StringData,ListAggWsWithRetractAggFunction.ListAggWsWithRetractAccumulator>

getOutputDataType

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

Overrides:

getOutputDataType in class BuiltInAggregateFunction<org.apache.flink.table.data.StringData,ListAggWsWithRetractAggFunction.ListAggWsWithRetractAccumulator>

createAccumulator

public ListAggWsWithRetractAggFunction.ListAggWsWithRetractAccumulator createAccumulator()

Specified by:

createAccumulator in class org.apache.flink.table.functions.ImperativeAggregateFunction<org.apache.flink.table.data.StringData,ListAggWsWithRetractAggFunction.ListAggWsWithRetractAccumulator>

accumulate

public void accumulate(ListAggWsWithRetractAggFunction.ListAggWsWithRetractAccumulator acc,
 org.apache.flink.table.data.StringData value,
 org.apache.flink.table.data.StringData lineDelimiter)
                throws Exception

Throws:

Exception

retract

public void retract(ListAggWsWithRetractAggFunction.ListAggWsWithRetractAccumulator acc,
 org.apache.flink.table.data.StringData value,
 org.apache.flink.table.data.StringData lineDelimiter)
             throws Exception

Throws:

Exception

merge

public void merge(ListAggWsWithRetractAggFunction.ListAggWsWithRetractAccumulator acc,
 Iterable<ListAggWsWithRetractAggFunction.ListAggWsWithRetractAccumulator> its)
           throws Exception

Throws:

Exception

getValue

public org.apache.flink.table.data.StringData getValue(ListAggWsWithRetractAggFunction.ListAggWsWithRetractAccumulator acc)

Specified by:

getValue in class org.apache.flink.table.functions.AggregateFunction<org.apache.flink.table.data.StringData,ListAggWsWithRetractAggFunction.ListAggWsWithRetractAccumulator>

resetAccumulator

public void resetAccumulator(ListAggWsWithRetractAggFunction.ListAggWsWithRetractAccumulator acc)