Package io.prestosql.operator.aggregation.minmaxby

Class AbstractMinMaxByNAggregationFunction

java.lang.Object

io.prestosql.metadata.SqlAggregationFunction

io.prestosql.operator.aggregation.minmaxby.AbstractMinMaxByNAggregationFunction

All Implemented Interfaces:

SqlFunction

Direct Known Subclasses:

MaxByNAggregationFunction, MinByNAggregationFunction

public abstract class AbstractMinMaxByNAggregationFunction
extends SqlAggregationFunction

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractMinMaxByNAggregationFunction(String name, Function<Type,BlockTypeOperators.BlockPositionComparison> typeToComparison, String description)

Method Summary

Modifier and Type	Method	Description
static void	combine(MinMaxByNState state, MinMaxByNState otherState)
protected InternalAggregationFunction	generateAggregation(Type valueType, Type keyType)
List<TypeSignature>	getIntermediateTypes(FunctionBinding functionBinding)
static void	input(BlockTypeOperators.BlockPositionComparison comparison, Type valueType, Type keyType, MinMaxByNState state, Block value, Block key, int blockIndex, long n)
static void	output(ArrayType outputType, MinMaxByNState state, BlockBuilder out)
InternalAggregationFunction	specialize(FunctionBinding functionBinding)

Methods inherited from class io.prestosql.metadata.SqlAggregationFunction

createFunctionByAnnotations, createFunctionsByAnnotations, getAggregationMetadata, getFunctionMetadata, specialize

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface io.prestosql.metadata.SqlFunction

getFunctionDependencies, getFunctionDependencies

Constructor Detail

AbstractMinMaxByNAggregationFunction

protected AbstractMinMaxByNAggregationFunction(String name,
                                               Function<Type,BlockTypeOperators.BlockPositionComparison> typeToComparison,
                                               String description)

Method Detail

getIntermediateTypes

public List<TypeSignature> getIntermediateTypes(FunctionBinding functionBinding)

Overrides:

getIntermediateTypes in class SqlAggregationFunction

specialize

public InternalAggregationFunction specialize(FunctionBinding functionBinding)

Overrides:

specialize in class SqlAggregationFunction

input

public static void input(BlockTypeOperators.BlockPositionComparison comparison,
                         Type valueType,
                         Type keyType,
                         MinMaxByNState state,
                         Block value,
                         Block key,
                         int blockIndex,
                         long n)

combine

public static void combine(MinMaxByNState state,
                           MinMaxByNState otherState)

output

public static void output(ArrayType outputType,
                          MinMaxByNState state,
                          BlockBuilder out)

generateAggregation

protected InternalAggregationFunction generateAggregation(Type valueType,
                                                          Type keyType)