Package io.trino.cost

Class ComposableStatsCalculator

java.lang.Object

io.trino.cost.ComposableStatsCalculator

All Implemented Interfaces:

StatsCalculator

public class ComposableStatsCalculator
extends Object
implements StatsCalculator

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	ComposableStatsCalculator.Rule<T extends PlanNode>

Nested classes/interfaces inherited from interface io.trino.cost.StatsCalculator

StatsCalculator.Context

Constructor Summary

Constructors

Constructor	Description
ComposableStatsCalculator(List<ComposableStatsCalculator.Rule<?>> rules)

Method Summary

Modifier and Type	Method	Description
PlanNodeStatsEstimate	calculateStats(PlanNode node, StatsCalculator.Context context)	Calculate stats for the node.

Methods inherited from class java.lang.Object

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

Constructor Details

ComposableStatsCalculator

@Inject
public ComposableStatsCalculator(List<ComposableStatsCalculator.Rule<?>> rules)

Method Details

calculateStats

public PlanNodeStatsEstimate calculateStats(PlanNode node,
 StatsCalculator.Context context)

Description copied from interface: StatsCalculator

Calculate stats for the node.

Specified by:

calculateStats in interface StatsCalculator

Parameters:

node - The node to compute stats for.

context - The context required to calculate stats.