com.facebook.presto.operator.aggregation

Class MapAggregationFunction

java.lang.Object

com.facebook.presto.metadata.SqlAggregationFunction

com.facebook.presto.operator.aggregation.MapAggregationFunction

All Implemented Interfaces:

SqlFunction

public class MapAggregationFunction
extends SqlAggregationFunction

Field Summary

Fields

Modifier and Type	Field and Description
static MapAggregationFunction	MAP_AGG
static String	NAME

Constructor Summary

Constructors

Constructor and Description
MapAggregationFunction()

Method Summary

Modifier and Type	Method and Description
static void	combine(KeyValuePairsState state, KeyValuePairsState otherState)
String	getDescription()
static void	input(Type keyType, Type valueType, KeyValuePairsState state, Block key, Block value, int position)
static void	output(KeyValuePairsState state, BlockBuilder out)
InternalAggregationFunction	specialize(BoundVariables boundVariables, int arity, TypeManager typeManager, FunctionRegistry functionRegistry)

Methods inherited from class com.facebook.presto.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

MAP_AGG

public static final MapAggregationFunction MAP_AGG

NAME

public static final String NAME

See Also:

Constant Field Values

Constructor Detail

MapAggregationFunction

public MapAggregationFunction()

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 keyType,
                         Type valueType,
                         KeyValuePairsState state,
                         Block key,
                         Block value,
                         int position)

combine

public static void combine(KeyValuePairsState state,
                           KeyValuePairsState otherState)

output

public static void output(KeyValuePairsState state,
                          BlockBuilder out)