Package org.apache.spark.sql.sources

Class Filter

Object

org.apache.spark.sql.sources.Filter

Direct Known Subclasses:

AlwaysFalse, AlwaysTrue, And, EqualNullSafe, EqualTo, GreaterThan, GreaterThanOrEqual, In, IsNotNull, IsNull, LessThan, LessThanOrEqual, Not, Or, StringContains, StringEndsWith, StringStartsWith

public abstract class Filter
extends Object

A filter predicate for data sources. Mapping between Spark SQL types and filter value types follow the convention for return type of Row.get(int).

Since:

1.3.0

Constructor Summary

Constructors

Constructor	Description
Filter()

Method Summary

Modifier and Type	Method	Description
abstract String[]	references()	List of columns that are referenced by this filter.
String[][]	v2references()	List of columns that are referenced by this filter.

Methods inherited from class java.lang.Object

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

Constructor Details

Filter

public Filter()

Method Details

references

public abstract String[] references()

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.

Returns:

(undocumented)

Since:

2.1.0

v2references

public String[][] v2references()

List of columns that are referenced by this filter.

Returns:

each element is a column name as an array of string multi-identifier

Since:

3.0.0