Package org.elasticsearch.xpack.esql.optimizer.rules.logical

Class CombineLimitTopN

java.lang.Object

org.elasticsearch.xpack.esql.rule.Rule<UnaryPlan,LogicalPlan>

org.elasticsearch.xpack.esql.optimizer.rules.logical.OptimizerRules.OptimizerRule<UnaryPlan>

org.elasticsearch.xpack.esql.optimizer.rules.logical.CombineLimitTopN

public final class CombineLimitTopN
extends OptimizerRules.OptimizerRule<UnaryPlan>

Combines a Limit immediately followed by a TopN into a single TopN. Combines a LimitBy immediately followed by a TopNBy into a single TopNBy. This is needed because HoistRemoteEnrichTopN can create new TopN nodes that are not covered by the previous rules.

Field Summary

Fields inherited from class org.elasticsearch.xpack.esql.rule.Rule

log

Constructor Summary

Constructors

Constructor	Description
CombineLimitTopN()

Method Summary

Modifier and Type	Method	Description
LogicalPlan	rule(UnaryPlan plan)

Methods inherited from class org.elasticsearch.xpack.esql.optimizer.rules.logical.OptimizerRules.OptimizerRule

apply

Methods inherited from class org.elasticsearch.xpack.esql.rule.Rule

name, toString, typeToken

Methods inherited from class java.lang.Object

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

Constructor Details

CombineLimitTopN

public CombineLimitTopN()

Method Details

rule

public LogicalPlan rule(UnaryPlan plan)

Specified by:

rule in class OptimizerRules.OptimizerRule<UnaryPlan>