com.facebook.presto.operator

Class AggregationOperator.AggregationOperatorFactory

java.lang.Object

com.facebook.presto.operator.AggregationOperator.AggregationOperatorFactory

All Implemented Interfaces:

OperatorFactory

Enclosing class:

AggregationOperator

public static class AggregationOperator.AggregationOperatorFactory
extends Object
implements OperatorFactory

Constructor Summary

Constructors

Constructor and Description
AggregationOperatorFactory(int operatorId, PlanNodeId planNodeId, AggregationNode.Step step, List<AccumulatorFactory> accumulatorFactories, boolean useSystemMemory)

Method Summary

Modifier and Type	Method and Description
Operator	createOperator(DriverContext driverContext)
OperatorFactory	duplicate()
void	noMoreOperators() Declare that createOperator will not be called any more and release any resources associated with this factory.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.facebook.presto.operator.OperatorFactory

noMoreOperators

Constructor Detail

AggregationOperatorFactory

public AggregationOperatorFactory(int operatorId,
                                  PlanNodeId planNodeId,
                                  AggregationNode.Step step,
                                  List<AccumulatorFactory> accumulatorFactories,
                                  boolean useSystemMemory)

Method Detail

createOperator

public Operator createOperator(DriverContext driverContext)

Specified by:

createOperator in interface OperatorFactory

noMoreOperators

public void noMoreOperators()

Description copied from interface: OperatorFactory

Declare that createOperator will not be called any more and release any resources associated with this factory.

This method will be called only once. Implementation doesn't need to worry about duplicate invocations.

It is guaranteed that this will only be invoked after OperatorFactory.noMoreOperators(Lifespan) has been invoked for all applicable driver groups.

Specified by:

noMoreOperators in interface OperatorFactory

duplicate

public OperatorFactory duplicate()

Specified by:

duplicate in interface OperatorFactory