com.facebook.presto.cost

Class OutputStatsRule

java.lang.Object

com.facebook.presto.cost.OutputStatsRule

All Implemented Interfaces:

ComposableStatsCalculator.Rule<OutputNode>

public class OutputStatsRule
extends Object
implements ComposableStatsCalculator.Rule<OutputNode>

Constructor Summary

Constructors

Constructor and Description
OutputStatsRule()

Method Summary

Modifier and Type	Method and Description
Optional<PlanNodeStatsEstimate>	calculate(OutputNode node, StatsProvider sourceStats, Lookup lookup, Session session, TypeProvider types)
Pattern<OutputNode>	getPattern()

Methods inherited from class java.lang.Object

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

Constructor Detail

OutputStatsRule

public OutputStatsRule()

Method Detail

getPattern

public Pattern<OutputNode> getPattern()

Specified by:

getPattern in interface ComposableStatsCalculator.Rule<OutputNode>

calculate

public Optional<PlanNodeStatsEstimate> calculate(OutputNode node,
                                                 StatsProvider sourceStats,
                                                 Lookup lookup,
                                                 Session session,
                                                 TypeProvider types)

Specified by:

calculate in interface ComposableStatsCalculator.Rule<OutputNode>