Package io.prestosql.operator.aggregation

Class AbstractMinMaxNAggregationFunction

java.lang.Object

io.prestosql.metadata.SqlAggregationFunction

io.prestosql.operator.aggregation.AbstractMinMaxNAggregationFunction

All Implemented Interfaces:

SqlFunction

Direct Known Subclasses:

MaxNAggregationFunction, MinNAggregationFunction

public abstract class AbstractMinMaxNAggregationFunction
extends SqlAggregationFunction

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method	Description
static void	combine(MinMaxNState state, MinMaxNState otherState)
protected InternalAggregationFunction	generateAggregation(Type type)
List<TypeSignature>	getIntermediateTypes(FunctionBinding functionBinding)
static void	input(BlockTypeOperators.BlockPositionComparison comparison, Type type, MinMaxNState state, Block block, long n, int blockIndex)
static void	output(ArrayType outputType, MinMaxNState 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

AbstractMinMaxNAggregationFunction

protected AbstractMinMaxNAggregationFunction(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

generateAggregation

protected InternalAggregationFunction generateAggregation(Type type)

input

public static void input(BlockTypeOperators.BlockPositionComparison comparison,
                         Type type,
                         MinMaxNState state,
                         Block block,
                         long n,
                         int blockIndex)

combine

public static void combine(MinMaxNState state,
                           MinMaxNState otherState)

output

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