com.facebook.presto.operator.aggregation

Class ReduceAggregationFunction

java.lang.Object

com.facebook.presto.metadata.BuiltInFunction

com.facebook.presto.metadata.SqlAggregationFunction

com.facebook.presto.operator.aggregation.ReduceAggregationFunction

All Implemented Interfaces:

SqlFunction

public class ReduceAggregationFunction
extends SqlAggregationFunction

Constructor Summary

Constructors

Constructor and Description
ReduceAggregationFunction(boolean supportsComplexTypes)

Method Summary

Modifier and Type	Method and Description
static void	combine(ReduceAggregationState state, ReduceAggregationState otherState, BinaryFunctionInterface inputFunction, BinaryFunctionInterface combineFunction)
String	getDescription()
static void	input(Type type, ReduceAggregationState state, Object value, Object initialStateValue, BinaryFunctionInterface inputFunction, BinaryFunctionInterface combineFunction)
boolean	isDeterministic()
BuiltInAggregationFunctionImplementation	specialize(BoundVariables boundVariables, int arity, FunctionAndTypeManager functionAndTypeManager)
static void	write(Type type, ReduceAggregationState state, BlockBuilder blockBuilder)

Methods inherited from class com.facebook.presto.metadata.SqlAggregationFunction

createFunctionByAnnotations, createFunctionsByAnnotations, getSignature, getVisibility

Methods inherited from class com.facebook.presto.metadata.BuiltInFunction

isCalledOnNullInput

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ReduceAggregationFunction

public ReduceAggregationFunction(boolean supportsComplexTypes)

Method Detail

isDeterministic

public boolean isDeterministic()

Specified by:

isDeterministic in interface SqlFunction

Overrides:

isDeterministic in class SqlAggregationFunction

getDescription

public String getDescription()

specialize

public BuiltInAggregationFunctionImplementation specialize(BoundVariables boundVariables,
                                                           int arity,
                                                           FunctionAndTypeManager functionAndTypeManager)

Specified by:

specialize in class SqlAggregationFunction

input

public static void input(Type type,
                         ReduceAggregationState state,
                         Object value,
                         Object initialStateValue,
                         BinaryFunctionInterface inputFunction,
                         BinaryFunctionInterface combineFunction)

combine

public static void combine(ReduceAggregationState state,
                           ReduceAggregationState otherState,
                           BinaryFunctionInterface inputFunction,
                           BinaryFunctionInterface combineFunction)

write

public static void write(Type type,
                         ReduceAggregationState state,
                         BlockBuilder blockBuilder)