org.apache.spark.sql.connector.expressions

Interface Transform

All Superinterfaces:

Expression

All Known Subinterfaces:

RewritableTransform

@Evolving
public interface Transform
extends Expression

Represents a transform function in the public logical expression API.

For example, the transform date(ts) is used to derive a date value from a timestamp column. The transform name is "date" and its argument is a reference to the "ts" column.

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
Expression[]	arguments() Returns the arguments passed to the transform function.
default Expression[]	children() Returns an array of the children of this node.
String	name() Returns the transform function name.

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

describe, references

Method Detail

name

String name()

Returns the transform function name.

arguments

Expression[] arguments()

Returns the arguments passed to the transform function.

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