org.springframework.webflow.engine
Class FlowVariable

java.lang.Object
  org.springframework.webflow.core.AnnotatedObject
      org.springframework.webflow.engine.FlowVariable

All Implemented Interfaces:

Annotated

public class FlowVariable
extends AnnotatedObject

A value object that defines a specification for a flow variable. Such a variable is allocated when a flow starts and destroyed when that flow ends. This class encapsulates information about the variable and the behavior necessary to allocate the variable instance in flow scope.

Author:

Keith Donald

Field Summary

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

CAPTION_PROPERTY, DESCRIPTION_PROPERTY

Constructor Summary

FlowVariable(String name, VariableValueFactory valueFactory)
Creates a new flow variable.

Method Summary

void	create(RequestContext context) Creates this flow variable.
Object	destroy(RequestContext context) Destroys this flow variable.
boolean	equals(Object o)
String	getName() Returns the name of this variable.
int	hashCode()
void	restore(RequestContext context) Restores this variable's dependencies.
String	toString()

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

getAttributes, getCaption, getDescription, setCaption, setDescription

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

FlowVariable

public FlowVariable(String name,
                    VariableValueFactory valueFactory)

Creates a new flow variable.

Parameters:

name - the variable name

Method Detail

getName

public String getName()

Returns the name of this variable.

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 flow variable. This method allocates the variable's value in the correct flow scope.

Parameters:

context - the executing flow

restore

public void restore(RequestContext context)

Restores this 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)

Destroys this flow variable. This method removes the variable's value in the correct flow scope.

Parameters:

context - the executing flow

toString

public String toString()

Overrides:

toString in class Object