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 and Description
protected	AbstractMinMaxByNAggregationFunction(String name, Function<Type,BlockComparator> typeToComparator)

Method Summary

Modifier and Type	Method and Description
static void	combine(MinMaxByNState state, MinMaxByNState otherState)
protected InternalAggregationFunction	generateAggregation(Type valueType, Type keyType)
static void	input(BlockComparator comparator, 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(BoundVariables boundVariables, int arity, TypeManager typeManager, FunctionRegistry functionRegistry)

Methods inherited from class io.prestosql.metadata.SqlAggregationFunction

createFunctionByAnnotations, createFunctionsByAnnotations, getSignature, isDeterministic, isHidden

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

getDescription

Constructor Detail

AbstractMinMaxByNAggregationFunction

protected AbstractMinMaxByNAggregationFunction(String name,
                                               Function<Type,BlockComparator> typeToComparator)

Method Detail

specialize

public InternalAggregationFunction specialize(BoundVariables boundVariables,
                                              int arity,
                                              TypeManager typeManager,
                                              FunctionRegistry functionRegistry)

Specified by:

specialize in class SqlAggregationFunction

input

public static void input(BlockComparator comparator,
                         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)