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

Method Summary

Modifier and Type	Method and Description
static void	combine(MinMaxNState state, MinMaxNState otherState)
protected InternalAggregationFunction	generateAggregation(Type type)
static void	input(BlockComparator comparator, Type type, MinMaxNState state, Block block, long n, int blockIndex)
static void	output(ArrayType outputType, MinMaxNState 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

AbstractMinMaxNAggregationFunction

protected AbstractMinMaxNAggregationFunction(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

generateAggregation

protected InternalAggregationFunction generateAggregation(Type type)

input

public static void input(BlockComparator comparator,
                         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)