org.apache.spark.sql.connector.expressions

Interface NamedReference

All Superinterfaces:

Expression

@Evolving
public interface NamedReference
extends Expression

Represents a field or column reference in the public logical expression API.

Since:

3.0.0

Field Summary

Fields inherited from interface org.apache.spark.sql.connector.expressions.Expression

EMPTY_EXPRESSION, EMPTY_NAMED_REFERENCE

Method Summary

Modifier and Type	Method and Description
default Expression[]	children() Returns an array of the children of this node.
String[]	fieldNames() Returns the referenced field name as an array of String parts.
default NamedReference[]	references() List of fields or columns that are referenced by this expression.

Methods inherited from interface org.apache.spark.sql.connector.expressions.Expression

describe

Method Detail

fieldNames

String[] fieldNames()

Returns the referenced field name as an array of String parts.

Each string in the returned array represents a field name.

children

default Expression[] children()

Description copied from interface: Expression

Returns an array of the children of this node. Children should not change.

Specified by:

children in interface Expression

references

default NamedReference[] references()

Description copied from interface: Expression

List of fields or columns that are referenced by this expression.

Specified by:

references in interface Expression