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

Class ReplaceAggregateNestedExpressionWithEval

java.lang.Object

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

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

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

public final class ReplaceAggregateNestedExpressionWithEval
extends OptimizerRules.OptimizerRule<Aggregate>

Replace nested expressions inside a Aggregate with synthetic eval. STATS SUM(a + 1) BY x % 2 becomes EVAL `a + 1` = a + 1, `x % 2` = x % 2 | STATS SUM(`a+1`_ref) BY `x % 2`_ref and INLINE STATS SUM(a + 1) BY x % 2 becomes EVAL `a + 1` = a + 1, `x % 2` = x % 2 | INLINE STATS SUM(`a+1`_ref) BY `x % 2`_ref

Field Summary

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

log

Constructor Summary

Constructors

Constructor	Description
ReplaceAggregateNestedExpressionWithEval()
ReplaceAggregateNestedExpressionWithEval(boolean locallyUniqueNames)

Method Summary

Modifier and Type	Method	Description
protected LogicalPlan	rule(Aggregate aggregate)

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

ReplaceAggregateNestedExpressionWithEval

public ReplaceAggregateNestedExpressionWithEval()

ReplaceAggregateNestedExpressionWithEval

public ReplaceAggregateNestedExpressionWithEval(boolean locallyUniqueNames)

Parameters:

locallyUniqueNames - when true, the synthetic eval names generated for extracted nested expressions are made globally unique instead of being derived deterministically from the extracted expression.

Method Details

rule

protected LogicalPlan rule(Aggregate aggregate)

Specified by:

rule in class OptimizerRules.OptimizerRule<Aggregate>