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

Class PercentileAggFunction<T>

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<T,PercentileAggFunction.PercentileAccumulator>

org.apache.flink.table.runtime.functions.aggregate.PercentileAggFunction<T>

All Implemented Interfaces:

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

Direct Known Subclasses:

PercentileAggFunction.MultiPercentileAggFunction, PercentileAggFunction.SinglePercentileAggFunction

@Internal
public abstract class PercentileAggFunction<T>
extends BuiltInAggregateFunction<T,PercentileAggFunction.PercentileAccumulator>

Built-in PERCENTILE aggregate function.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	PercentileAggFunction.MultiPercentileAggFunction	Percentile agg function with multiple percentage parameters.
static class	PercentileAggFunction.PercentileAccumulator	Accumulator for PERCENTILE.
static class	PercentileAggFunction.SinglePercentileAggFunction	Percentile agg function with only one percentage parameter.

Field Summary

Fields

Modifier and Type	Field	Description
protected org.apache.flink.table.types.DataType	frequencyType
protected org.apache.flink.table.types.DataType	valueType

Constructor Summary

Constructors

Constructor	Description
PercentileAggFunction(org.apache.flink.table.types.logical.LogicalType inputType, org.apache.flink.table.types.logical.LogicalType frequencyType)

Method Summary

Modifier and Type	Method	Description
void	accumulate(PercentileAggFunction.PercentileAccumulator acc, Object value, Double percentage)
void	accumulate(PercentileAggFunction.PercentileAccumulator acc, Object value, Double[] percentage)
void	accumulate(PercentileAggFunction.PercentileAccumulator acc, Object value, Double[] percentage, Number frequency)
void	accumulate(PercentileAggFunction.PercentileAccumulator acc, Object value, Double percentage, Number frequency)
PercentileAggFunction.PercentileAccumulator	createAccumulator()
org.apache.flink.table.types.DataType	getAccumulatorDataType()
void	merge(PercentileAggFunction.PercentileAccumulator acc, Iterable<PercentileAggFunction.PercentileAccumulator> its)
void	retract(PercentileAggFunction.PercentileAccumulator acc, Object value, Double percentage)
void	retract(PercentileAggFunction.PercentileAccumulator acc, Object value, Double[] percentage)
void	retract(PercentileAggFunction.PercentileAccumulator acc, Object value, Double[] percentage, Number frequency)
void	retract(PercentileAggFunction.PercentileAccumulator acc, Object value, Double percentage, Number frequency)

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

getArgumentDataTypes, getOutputDataType, getRequirements, getTypeInference, isDeterministic

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

getKind, getValue

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

Field Detail

valueType

protected final transient org.apache.flink.table.types.DataType valueType

frequencyType

protected final transient org.apache.flink.table.types.DataType frequencyType

Constructor Detail

PercentileAggFunction

public PercentileAggFunction(org.apache.flink.table.types.logical.LogicalType inputType,
                             org.apache.flink.table.types.logical.LogicalType frequencyType)

Method Detail

getAccumulatorDataType

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

Overrides:

getAccumulatorDataType in class BuiltInAggregateFunction<T,PercentileAggFunction.PercentileAccumulator>

createAccumulator

public PercentileAggFunction.PercentileAccumulator createAccumulator()

Specified by:

createAccumulator in class org.apache.flink.table.functions.ImperativeAggregateFunction<T,PercentileAggFunction.PercentileAccumulator>

accumulate

public void accumulate(PercentileAggFunction.PercentileAccumulator acc,
                       @Nullable
                       Object value,
                       Double percentage)
                throws Exception

Throws:

Exception

accumulate

public void accumulate(PercentileAggFunction.PercentileAccumulator acc,
                       @Nullable
                       Object value,
                       Double percentage,
                       @Nullable
                       Number frequency)
                throws Exception

Throws:

Exception

accumulate

public void accumulate(PercentileAggFunction.PercentileAccumulator acc,
                       @Nullable
                       Object value,
                       Double[] percentage)
                throws Exception

Throws:

Exception

accumulate

public void accumulate(PercentileAggFunction.PercentileAccumulator acc,
                       @Nullable
                       Object value,
                       Double[] percentage,
                       @Nullable
                       Number frequency)
                throws Exception

Throws:

Exception

retract

public void retract(PercentileAggFunction.PercentileAccumulator acc,
                    @Nullable
                    Object value,
                    Double percentage)
             throws Exception

Throws:

Exception

retract

public void retract(PercentileAggFunction.PercentileAccumulator acc,
                    @Nullable
                    Object value,
                    Double percentage,
                    @Nullable
                    Number frequency)
             throws Exception

Throws:

Exception

retract

public void retract(PercentileAggFunction.PercentileAccumulator acc,
                    @Nullable
                    Object value,
                    Double[] percentage)
             throws Exception

Throws:

Exception

retract

public void retract(PercentileAggFunction.PercentileAccumulator acc,
                    @Nullable
                    Object value,
                    Double[] percentage,
                    @Nullable
                    Number frequency)
             throws Exception

Throws:

Exception

merge

public void merge(PercentileAggFunction.PercentileAccumulator acc,
                  Iterable<PercentileAggFunction.PercentileAccumulator> its)
           throws Exception

Throws:

Exception