Package org.eclipse.persistence.jpa.jpql.parser

Enum OrderByItem.NullOrdering

java.lang.Object

java.lang.Enum<OrderByItem.NullOrdering>

org.eclipse.persistence.jpa.jpql.parser.OrderByItem.NullOrdering

All Implemented Interfaces:

Serializable, Comparable<OrderByItem.NullOrdering>

Enclosing class:

OrderByItem

public static enum OrderByItem.NullOrdering
extends Enum<OrderByItem.NullOrdering>

This enumeration lists all the possible choices for ordering nulls in an item.

Enum Constant Summary

Enum Constants

Enum Constant	Description
DEFAULT	The constant used when the ordering is not specify.
NULLS_FIRST	The constant for 'NULLS FIRST', which tells to order nulls first.
NULLS_LAST	The constant for 'NULLS LAST', which tells to order nulls last.

Method Summary

Modifier and Type	Method	Description
String	getIdentifier()	Returns the actual JPQL composite identifiers identified by this enum constant.
String	toString()
static OrderByItem.NullOrdering	valueOf(String name)	Returns the enum constant of this type with the specified name.
static OrderByItem.NullOrdering[]	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, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

DEFAULT

public static final OrderByItem.NullOrdering DEFAULT

The constant used when the ordering is not specify.

NULLS_FIRST

public static final OrderByItem.NullOrdering NULLS_FIRST

The constant for 'NULLS FIRST', which tells to order nulls first.

NULLS_LAST

public static final OrderByItem.NullOrdering NULLS_LAST

The constant for 'NULLS LAST', which tells to order nulls last.

Method Detail

values

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

Returns:

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

valueOf

public static OrderByItem.NullOrdering 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

getIdentifier

public String getIdentifier()

Returns the actual JPQL composite identifiers identified by this enum constant.

Returns:

The composite identifiers

toString

public String toString()

Overrides:

toString in class Enum<OrderByItem.NullOrdering>