Package org.springframework.webflow.engine

Enum Class History

java.lang.Object

java.lang.Enum<History>

org.springframework.webflow.engine.History

All Implemented Interfaces:

Serializable, Comparable<History>, Constable

public enum History
extends Enum<History>

View state history policies.

Author:

Keith Donald

See Also:

• ViewState

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
DISCARD	The history of the view state should be discarded when the view state exits to prevent back-tracking.
INVALIDATE	The history of the view state and all previous view state should be invalidated to completely restrict back tracking.
PRESERVE	The history of the view state should be preserved when the view state exits to support back-tracking.

Method Summary

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

Methods inherited from class java.lang.Enum

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

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

PRESERVE

public static final History PRESERVE

The history of the view state should be preserved when the view state exits to support back-tracking.

DISCARD

public static final History DISCARD

The history of the view state should be discarded when the view state exits to prevent back-tracking.

INVALIDATE

public static final History INVALIDATE

The history of the view state and all previous view state should be invalidated to completely restrict back tracking.

Method Details

values

public static History[] 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 History 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