Package io.prestosql.sql.planner.iterative.rule

Class EvaluateZeroSample

java.lang.Object

io.prestosql.sql.planner.iterative.rule.EvaluateZeroSample

All Implemented Interfaces:

Rule<SampleNode>

public class EvaluateZeroSample
extends Object
implements Rule<SampleNode>

Replaces 0% sample node with empty values node.

Nested Class Summary

Nested classes/interfaces inherited from interface io.prestosql.sql.planner.iterative.Rule

Rule.Context, Rule.Result

Constructor Summary

Constructors

Constructor	Description
EvaluateZeroSample()

Method Summary

Modifier and Type	Method	Description
Rule.Result	apply(SampleNode sample, Captures captures, Rule.Context context)
Pattern<SampleNode>	getPattern()	Returns a pattern to which plan nodes this rule applies.

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.prestosql.sql.planner.iterative.Rule

isEnabled

Constructor Detail

EvaluateZeroSample

public EvaluateZeroSample()

Method Detail

getPattern

public Pattern<SampleNode> getPattern()

Description copied from interface: Rule

Returns a pattern to which plan nodes this rule applies.

Specified by:

getPattern in interface Rule<SampleNode>

apply

public Rule.Result apply(SampleNode sample,
                         Captures captures,
                         Rule.Context context)

Specified by:

apply in interface Rule<SampleNode>