org.datanucleus.query

Enum NullOrderingType

java.lang.Object

java.lang.Enum<NullOrderingType>

org.datanucleus.query.NullOrderingType

All Implemented Interfaces:

Serializable, Comparable<NullOrderingType>

public enum NullOrderingType
extends Enum<NullOrderingType>

Enum for how to handle null values when ordering a query based on a column.

Enum Constant Summary

Enum Constants

Enum Constant and Description
NULLS_FIRST
NULLS_LAST

Method Summary

Modifier and Type	Method and Description
static NullOrderingType	valueOf(String name) Returns the enum constant of this type with the specified name.
static NullOrderingType[]	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

NULLS_FIRST

public static final NullOrderingType NULLS_FIRST

NULLS_LAST

public static final NullOrderingType NULLS_LAST

Method Detail

values

public static NullOrderingType[] 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 (NullOrderingType c : NullOrderingType.values())
    System.out.println(c);

Returns:

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

valueOf

public static NullOrderingType 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