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

Class PruneConstantSortKeysFromOrderBy

java.lang.Object

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

org.elasticsearch.xpack.esql.rule.ParameterizedRule<LogicalPlan,LogicalPlan,LogicalOptimizerContext>

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

public final class PruneConstantSortKeysFromOrderBy
extends ParameterizedRule<LogicalPlan,LogicalPlan,LogicalOptimizerContext>

Removes sort keys that are provably constant — foldable, or a field missing from every shard — since sorting by a constant conveys no order. Emptying the sort lets the surrounding Limit/LimitBy stay a plain limit instead of becoming a TopN, which is what lets it push down to Lucene.

Field Summary

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

log

Constructor Summary

Constructors

Constructor	Description
PruneConstantSortKeysFromOrderBy()

Method Summary

Modifier and Type	Method	Description
LogicalPlan	apply(LogicalPlan plan, LogicalOptimizerContext ctx)

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

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

PruneConstantSortKeysFromOrderBy

public PruneConstantSortKeysFromOrderBy()

Method Details

apply

public LogicalPlan apply(LogicalPlan plan,
 LogicalOptimizerContext ctx)

Specified by:

apply in class ParameterizedRule<LogicalPlan,LogicalPlan,LogicalOptimizerContext>