org.apache.spark.sql.sources

Class IsNull

Object

org.apache.spark.sql.sources.Filter

org.apache.spark.sql.sources.IsNull

All Implemented Interfaces:

java.io.Serializable, scala.Equals, scala.Product

public class IsNull
extends Filter
implements scala.Product, scala.Serializable

A filter that evaluates to true iff the attribute evaluates to null.

param: attribute of the column to be evaluated; dots are used as separators for nested columns. If any part of the names contains dots, it is quoted to avoid confusion.

Since:

1.3.0

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
IsNull(String attribute)

Method Summary

Modifier and Type	Method and Description
abstract static R	apply(T1 v1)
String	attribute()
String[]	references() List of columns that are referenced by this filter.
static String	toString()
org.apache.spark.sql.connector.expressions.filter.Predicate	toV2() Converts V1 filter to V2 filter

Methods inherited from class org.apache.spark.sql.sources.Filter

v2references

Methods inherited from class Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface scala.Product

$init$, productArity, productElement, productIterator, productPrefix

Methods inherited from interface scala.Equals

canEqual, equals

Constructor Detail

IsNull

public IsNull(String attribute)

Method Detail

apply

public abstract static R apply(T1 v1)

toString

public static String toString()

attribute

public String attribute()

references

public String[] references()

Description copied from class: Filter

List of columns that are referenced by this filter.

Note that, each element in references represents a column. The column name follows ANSI SQL names and identifiers: dots are used as separators for nested columns, name will be quoted if it contains special chars.

Specified by:

references in class Filter

Returns:

(undocumented)

toV2

public org.apache.spark.sql.connector.expressions.filter.Predicate toV2()

Description copied from class: Filter

Converts V1 filter to V2 filter

Returns:

(undocumented)