io.prestosql.cost

Class EnforceSingleRowStatsRule

java.lang.Object

io.prestosql.cost.SimpleStatsRule<EnforceSingleRowNode>

io.prestosql.cost.EnforceSingleRowStatsRule

All Implemented Interfaces:

ComposableStatsCalculator.Rule<EnforceSingleRowNode>

public class EnforceSingleRowStatsRule
extends SimpleStatsRule<EnforceSingleRowNode>

Constructor Summary

Constructors

Constructor and Description
EnforceSingleRowStatsRule(StatsNormalizer normalizer)

Method Summary

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

EnforceSingleRowStatsRule

public EnforceSingleRowStatsRule(StatsNormalizer normalizer)

Method Detail

getPattern

public Pattern<EnforceSingleRowNode> getPattern()

doCalculate

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

Specified by:

doCalculate in class SimpleStatsRule<EnforceSingleRowNode>