Package io.prestosql.cost

Class TopNStatsRule

java.lang.Object

io.prestosql.cost.SimpleStatsRule<TopNNode>

io.prestosql.cost.TopNStatsRule

All Implemented Interfaces:

ComposableStatsCalculator.Rule<TopNNode>

public class TopNStatsRule
extends SimpleStatsRule<TopNNode>

Constructor Summary

Constructors

Constructor	Description
TopNStatsRule(StatsNormalizer normalizer)

Method Summary

Modifier and Type	Method	Description
protected Optional<PlanNodeStatsEstimate>	doCalculate(TopNNode node, StatsProvider statsProvider, Lookup lookup, Session session, TypeProvider types)
Pattern<TopNNode>	getPattern()

Methods inherited from class io.prestosql.cost.SimpleStatsRule

calculate

Methods inherited from class java.lang.Object

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

Constructor Detail

TopNStatsRule

public TopNStatsRule(StatsNormalizer normalizer)

Method Detail

getPattern

public Pattern<TopNNode> getPattern()

doCalculate

protected Optional<PlanNodeStatsEstimate> doCalculate(TopNNode node,
                                                      StatsProvider statsProvider,
                                                      Lookup lookup,
                                                      Session session,
                                                      TypeProvider types)

Specified by:

doCalculate in class SimpleStatsRule<TopNNode>