io.prestosql.cost

Class RowNumberStatsRule

java.lang.Object

io.prestosql.cost.SimpleStatsRule<RowNumberNode>

io.prestosql.cost.RowNumberStatsRule

All Implemented Interfaces:

ComposableStatsCalculator.Rule<RowNumberNode>

public class RowNumberStatsRule
extends SimpleStatsRule<RowNumberNode>

Constructor Summary

Constructors

Constructor and Description
RowNumberStatsRule(StatsNormalizer normalizer)

Method Summary

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

RowNumberStatsRule

public RowNumberStatsRule(StatsNormalizer normalizer)

Method Detail

getPattern

public Pattern<RowNumberNode> getPattern()

doCalculate

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

Specified by:

doCalculate in class SimpleStatsRule<RowNumberNode>