io.prestosql.operator.aggregation.histogram

Class Histogram

java.lang.Object

io.prestosql.metadata.SqlAggregationFunction

io.prestosql.operator.aggregation.histogram.Histogram

All Implemented Interfaces:

SqlFunction

public class Histogram
extends SqlAggregationFunction

Field Summary

Fields

Modifier and Type	Field and Description
static int	EXPECTED_SIZE_FOR_HASHING
static String	NAME

Constructor Summary

Constructors

Constructor and Description
Histogram(HistogramGroupImplementation groupMode)

Method Summary

Modifier and Type	Method and Description
static void	combine(HistogramState state, HistogramState otherState)
String	getDescription()
static void	input(Type type, HistogramState state, Block key, int position)
static void	output(Type type, HistogramState 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

Field Detail

NAME

public static final String NAME

See Also:

Constant Field Values

EXPECTED_SIZE_FOR_HASHING

public static final int EXPECTED_SIZE_FOR_HASHING

See Also:

Constant Field Values

Constructor Detail

Histogram

public Histogram(HistogramGroupImplementation groupMode)

Method Detail

getDescription

public String getDescription()

specialize

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

Specified by:

specialize in class SqlAggregationFunction

input

public static void input(Type type,
                         HistogramState state,
                         Block key,
                         int position)

combine

public static void combine(HistogramState state,
                           HistogramState otherState)

output

public static void output(Type type,
                          HistogramState state,
                          BlockBuilder out)