Enum Class SelectItemReferenceStrategy

java.lang.Object

java.lang.Enum<SelectItemReferenceStrategy>

org.hibernate.dialect.sql.ast.spi.SelectItemReferenceStrategy

All Implemented Interfaces:

Serializable, Comparable<SelectItemReferenceStrategy>, Constable

@SPI({USE,SUPPLY})
public enum SelectItemReferenceStrategy
extends Enum<SelectItemReferenceStrategy>

How a SQL AST translator refers to a select item from a group by clause.

Supply the least database-specific form which preserves the rendered select semantics. The translator defaults to repeating the expression.

See Also:

• AbstractSqlAstTranslator.getGroupBySelectItemReferenceStrategy()

Nested Class Summary

Nested classes/interfaces inherited from class Enum

Enum.EnumDesc<E>

Enum Constant Summary

Enum Constants

Enum Constant	Description
ALIAS	Refer to the item by its select alias.
EXPRESSION	Render the selected expression again.
POSITION	Refer to the item by its one-based select-list position.

Method Summary

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

Methods inherited from class Enum

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

Methods inherited from class Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

EXPRESSION

public static final SelectItemReferenceStrategy EXPRESSION

Render the selected expression again.

ALIAS

public static final SelectItemReferenceStrategy ALIAS

Refer to the item by its select alias.

POSITION

public static final SelectItemReferenceStrategy POSITION

Refer to the item by its one-based select-list position.

Method Details

values

public static SelectItemReferenceStrategy[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

Returns:

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

valueOf

public static SelectItemReferenceStrategy valueOf(String name)

Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (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 class has no constant with the specified name

NullPointerException - if the argument is null