org.apache.calcite.rel

Enum RelFieldCollation.NullDirection

java.lang.Object

java.lang.Enum<RelFieldCollation.NullDirection>

org.apache.calcite.rel.RelFieldCollation.NullDirection

All Implemented Interfaces:

Serializable, Comparable<RelFieldCollation.NullDirection>

Enclosing class:

RelFieldCollation

public static enum RelFieldCollation.NullDirection
extends Enum<RelFieldCollation.NullDirection>

Ordering of nulls.

Enum Constant Summary

Enum Constants

Enum Constant and Description
FIRST
LAST
UNSPECIFIED

Field Summary

Fields

Modifier and Type	Field and Description
int	nullComparison

Method Summary

Methods

Modifier and Type	Method and Description
static RelFieldCollation.NullDirection	valueOf(String name) Returns the enum constant of this type with the specified name.
static RelFieldCollation.NullDirection[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

FIRST

public static final RelFieldCollation.NullDirection FIRST

LAST

public static final RelFieldCollation.NullDirection LAST

UNSPECIFIED

public static final RelFieldCollation.NullDirection UNSPECIFIED

Field Detail

nullComparison

public final int nullComparison

Method Detail

values

public static RelFieldCollation.NullDirection[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (RelFieldCollation.NullDirection c : RelFieldCollation.NullDirection.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static RelFieldCollation.NullDirection valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null