org.apache.spark.sql.sources

Class EqualNullSafe

Object

org.apache.spark.sql.sources.Filter

org.apache.spark.sql.sources.EqualNullSafe

All Implemented Interfaces:

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

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

Performs equality comparison, similar to EqualTo. However, this differs from EqualTo in that it returns true (rather than NULL) if both inputs are NULL, and false (rather than NULL) if one of the input is NULL and the other is not 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:

1.5.0

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
EqualNullSafe(String attribute, Object value)

Method Summary

Modifier and Type	Method and Description
abstract static R	apply(T1 v1, T2 v2)
String	attribute()
String[]	references() List of columns that are referenced by this filter.
static String	toString()
Predicate	toV2() Converts V1 filter to V2 filter
Object	value()

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

EqualNullSafe

public EqualNullSafe(String attribute,
                     Object value)

Method Detail

apply

public abstract static R apply(T1 v1,
                               T2 v2)

toString

public static String toString()

attribute

public String attribute()

value

public Object value()

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 Predicate toV2()

Description copied from class: Filter

Converts V1 filter to V2 filter

Returns:

(undocumented)