Package org.apache.spark.sql.sources

Class IsNull

Object
org.apache.spark.sql.sources.Filter
org.apache.spark.sql.sources.IsNull
All Implemented Interfaces:
Serializable, scala.Equals, scala.Product
public class IsNull extends Filter implements scala.Product, 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:

  • Constructor Summary

    Constructors
    Constructor
    Description
    IsNull(String attribute)
     

  • Method Summary

    Modifier and Type
    Method
    Description
    abstract static R
    apply(T1 v1)
     
    String
    attribute()
     
    String[]
    references()
    List of columns that are referenced by this filter.
    static String
    toString()
     
    Predicate
    toV2()
     

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

    v2references

    Methods inherited from class java.lang.Object

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

    Methods inherited from interface scala.Equals

    canEqual, equals

    Methods inherited from interface scala.Product

    productArity, productElement, productElementName, productElementNames, productIterator, productPrefix

  • Constructor Details

    • IsNull

      public IsNull(String attribute)

  • Method Details

    • 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 Predicate toV2()