Package org.elasticsearch.xpack.esql.expression.function.scalar.string

Class ToLower

java.lang.Object

org.elasticsearch.xpack.esql.core.tree.Node<Expression>

org.elasticsearch.xpack.esql.core.expression.Expression

org.elasticsearch.xpack.esql.core.expression.function.Function

org.elasticsearch.xpack.esql.core.expression.function.scalar.ScalarFunction

org.elasticsearch.xpack.esql.expression.function.scalar.EsqlScalarFunction

org.elasticsearch.xpack.esql.expression.function.scalar.EsqlConfigurationFunction

org.elasticsearch.xpack.esql.expression.function.scalar.string.ChangeCase

org.elasticsearch.xpack.esql.expression.function.scalar.string.ToLower

All Implemented Interfaces:

NamedWriteable, Writeable, Resolvable, EvaluatorMapper, ConfigurationFunction

public class ToLower
extends ChangeCase

Nested Class Summary

Nested classes/interfaces inherited from class org.elasticsearch.xpack.esql.expression.function.scalar.string.ChangeCase

ChangeCase.Case

Nested classes/interfaces inherited from class org.elasticsearch.xpack.esql.core.expression.Expression

Expression.TypeResolution

Nested classes/interfaces inherited from interface org.elasticsearch.xpack.esql.evaluator.mapper.EvaluatorMapper

EvaluatorMapper.ToEvaluator

Nested classes/interfaces inherited from interface org.elasticsearch.common.io.stream.Writeable

Writeable.Reader<V>, Writeable.Writer<V>

Field Summary

Fields

Modifier and Type	Field	Description
static final NamedWriteableRegistry.Entry	ENTRY

Fields inherited from class org.elasticsearch.xpack.esql.core.expression.function.scalar.ScalarFunction

MAX_BYTES_REF_RESULT_SIZE

Fields inherited from class org.elasticsearch.xpack.esql.core.tree.Node

TO_STRING_MAX_WIDTH

Constructor Summary

Constructors

Constructor	Description
ToLower(Source source, Expression field, Configuration configuration)

Method Summary

Modifier and Type	Method	Description
String	getWriteableName()
protected NodeInfo<? extends Expression>	info()	Normally, you want to use one of the static create methods to implement this.
ToLower	replaceChild(Expression child)
void	writeTo(StreamOutput out)

Methods inherited from class org.elasticsearch.xpack.esql.expression.function.scalar.string.ChangeCase

caseType, dataType, field, foldable, replaceChildren, resolveType, toEvaluator

Methods inherited from class org.elasticsearch.xpack.esql.expression.function.scalar.EsqlConfigurationFunction

configuration, equals, hashCode

Methods inherited from class org.elasticsearch.xpack.esql.expression.function.scalar.EsqlScalarFunction

fold

Methods inherited from class org.elasticsearch.xpack.esql.core.expression.function.Function

arguments, functionName, nodeString, nullable

Methods inherited from class org.elasticsearch.xpack.esql.core.expression.Expression

canonical, canonicalize, childrenResolved, propertiesToString, references, resolved, semanticEquals, semanticHash, toString, typeResolved

Methods inherited from class org.elasticsearch.xpack.esql.core.tree.Node

anyMatch, children, collect, collect, collect, collectFirstChildren, collectLeaves, doCollectFirst, forEachDown, forEachDown, forEachDownMayReturnEarly, forEachProperty, forEachPropertyDown, forEachPropertyOnly, forEachPropertyUp, forEachUp, forEachUp, nodeName, nodeProperties, replaceChildrenSameSize, source, sourceLocation, sourceText, transformChildren, transformDown, transformDown, transformDown, transformNodeProps, transformPropertiesDown, transformPropertiesOnly, transformPropertiesUp, transformUp, transformUp, transformUp

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.elasticsearch.xpack.esql.evaluator.mapper.EvaluatorMapper

fold

Field Details

ENTRY

public static final NamedWriteableRegistry.Entry ENTRY

Constructor Details

ToLower

public ToLower(Source source,
 Expression field,
 Configuration configuration)

Method Details

writeTo

public void writeTo(StreamOutput out)
             throws IOException

Throws:

IOException

getWriteableName

public String getWriteableName()

replaceChild

public ToLower replaceChild(Expression child)

Specified by:

replaceChild in class ChangeCase

info

protected NodeInfo<? extends Expression> info()

Description copied from class: Node

Normally, you want to use one of the static create methods to implement this.

For QueryPlans, it is very important that the properties contain all of the expressions and references relevant to this node, and that all the properties are used in the provided constructor; otherwise query plan transformations like QueryPlan#transformExpressionsOnly(Function) will not have an effect.

Specified by:

info in class Node<Expression>