Package org.elasticsearch.xpack.esql.approximation

Class ApproximationPlan.SampleProbabilityPlaceHolder

java.lang.Object

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

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

org.elasticsearch.xpack.esql.core.expression.LeafExpression

org.elasticsearch.xpack.esql.approximation.ApproximationPlan.SampleProbabilityPlaceHolder

All Implemented Interfaces:

NamedWriteable, Writeable, Resolvable

Enclosing class:

ApproximationPlan

public static class ApproximationPlan.SampleProbabilityPlaceHolder
extends LeafExpression

A placeholder expression in the main approximation plan, that is replaced by the actual value after subplan execution.

Nested Class Summary

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

Expression.TypeResolution

Nested classes/interfaces inherited from class org.elasticsearch.xpack.esql.core.tree.Node

Node.NodeStringFormat

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

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

Field Summary

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

TO_STRING_MAX_LINES, TO_STRING_MAX_WIDTH

Constructor Summary

Constructors

Constructor	Description
SampleProbabilityPlaceHolder(Source source)

Method Summary

Modifier and Type	Method	Description
DataType	dataType()	The DataType returned by executing the tree rooted at this expression.
boolean	equals(Object obj)
String	getWriteableName()
int	hashCode()
protected NodeInfo<? extends Expression>	info()	Normally, you want to use one of the static create methods to implement this.
Nullability	nullable()
String	toString()
void	writeTo(StreamOutput out)

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

canonicalize, references, replaceChildren

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

canonical, childrenResolved, fold, foldable, propertiesToString, resolved, resolveType, semanticEquals, semanticHash, toString, typeResolved

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

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

Methods inherited from class java.lang.Object

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

Constructor Details

SampleProbabilityPlaceHolder

public SampleProbabilityPlaceHolder(Source source)

Method Details

nullable

public Nullability nullable()

Specified by:

nullable in class Expression

dataType

public DataType dataType()

Description copied from class: Expression

The DataType returned by executing the tree rooted at this expression. If Expression.typeResolved() returns an error then the behavior of this method is undefined. It may return a valid type. Or it may throw an exception. Or it may return a totally nonsensical type.

Specified by:

dataType in class Expression

getWriteableName

public String getWriteableName()

writeTo

public void writeTo(StreamOutput out)
             throws IOException

Throws:

IOException

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>

toString

public String toString()

Overrides:

toString in class Expression

equals

public boolean equals(Object obj)

Overrides:

equals in class Node<Expression>

hashCode

public int hashCode()

Overrides:

hashCode in class Node<Expression>