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

Class PartiallyFoldCase

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.OptimizerRules.OptimizerExpressionRule<Case>

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

public final class PartiallyFoldCase
extends OptimizerRules.OptimizerExpressionRule<Case>

Fold the arms of CASE statements.

EVAL c=CASE(true, foo, bar)

becomes

EVAL c=foo

Field Summary

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

log

Constructor Summary

Constructors

Constructor	Description
PartiallyFoldCase()

Method Summary

Modifier and Type	Method	Description
protected Expression	rule(Case c, LogicalOptimizerContext ctx)

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

apply, expressionToken, shouldVisit

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

PartiallyFoldCase

public PartiallyFoldCase()

Method Details

rule

protected Expression rule(Case c,
 LogicalOptimizerContext ctx)

Specified by:

rule in class OptimizerRules.OptimizerExpressionRule<Case>