io.prestosql.cost

Class ProjectStatsRule

java.lang.Object

io.prestosql.cost.SimpleStatsRule<ProjectNode>

io.prestosql.cost.ProjectStatsRule

All Implemented Interfaces:

ComposableStatsCalculator.Rule<ProjectNode>

public class ProjectStatsRule
extends SimpleStatsRule<ProjectNode>

Constructor Summary

Constructors

Constructor and Description
ProjectStatsRule(ScalarStatsCalculator scalarStatsCalculator, StatsNormalizer normalizer)

Method Summary

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

ProjectStatsRule

public ProjectStatsRule(ScalarStatsCalculator scalarStatsCalculator,
                        StatsNormalizer normalizer)

Method Detail

getPattern

public Pattern<ProjectNode> getPattern()

doCalculate

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

Specified by:

doCalculate in class SimpleStatsRule<ProjectNode>