org.springframework.webflow.engine

Class ViewVariable

java.lang.Object

org.springframework.webflow.core.AnnotatedObject

org.springframework.webflow.engine.ViewVariable

All Implemented Interfaces:

Annotated

public class ViewVariable
extends AnnotatedObject

A variable scoped to a particular view. Such a variable is allocated when a view-state is entered and destroyed when that view-state exits. The flow scope map is used as the backing variable store.

Author:

Keith Donald

Field Summary

Fields inherited from class org.springframework.webflow.core.AnnotatedObject

CAPTION_PROPERTY, DESCRIPTION_PROPERTY

Constructor Summary

Constructors

Constructor and Description
ViewVariable(String name, VariableValueFactory valueFactory) Creates a new view variable.

Method Summary

Methods

Modifier and Type	Method and Description
void	create(RequestContext context) Creates this view variable.
Object	destroy(RequestContext context) Destroy this view variable.
boolean	equals(Object o)
String	getName() Returns the name of this view variable.
VariableValueFactory	getValueFactory() Returns the source of the variable's initial value.
int	hashCode()
void	restore(RequestContext context) Restores this view variable's dependencies.

Methods inherited from class org.springframework.webflow.core.AnnotatedObject

getAttributes, getCaption, getDescription, setCaption, setDescription

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ViewVariable

public ViewVariable(String name,
            VariableValueFactory valueFactory)

Creates a new view variable.

Parameters:

name - the name of the variable

valueFactory - the source for the variable value

Method Detail

getName

public String getName()

Returns the name of this view variable.

getValueFactory

public VariableValueFactory getValueFactory()

Returns the source of the variable's initial value.

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

create

public void create(RequestContext context)

Creates this view variable. This method allocates the variable's value in flow scope.

Parameters:

context - the executing flow

restore

public void restore(RequestContext context)

Restores this view variable's dependencies. This method asks the variable's value factory to restore any references the variable has to transient objects.

Parameters:

context - the executing flow

destroy

public Object destroy(RequestContext context)

Destroy this view variable. This method removes the variable's value in flow scope.

Parameters:

context - the executing flow