public abstract class FlashFactory extends java.lang.Object implements FacesWrapper<FlashFactory>
FlashFactory is a factory object that creates (if
needed) and returns Flash instances. Implementations of Jakarta Faces must provide at least a default
implementation of Flash.
There must be one FlashFactory instance per web application that is utilizing Jakarta Faces. This
instance can be acquired, in a portable manner, by calling:
FlashFactory factory = (FlashFactory) FactoryFinder.getFactory(FactoryFinder.FLASH_FACTORY);
The common way to access the flash instance from Java code is still via ExternalContext.getFlash(). The common
way to access the flash from Faces views is the implicit Jakarta Expression Language object "flash". The runtime must
ensure that the FlashFactory is used to instantiate the flash.
Usage: extend this class and push the implementation being wrapped to the constructor and use getWrapped() to
access the instance being wrapped.
| Constructor and Description |
|---|
FlashFactory()
Deprecated.
Use the other constructor taking the implementation being wrapped.
|
FlashFactory(FlashFactory wrapped)
If this factory has been decorated, the implementation doing the decorating should push the implementation being wrapped to this constructor. |
| Modifier and Type | Method and Description |
|---|---|
abstract Flash |
getFlash(boolean create)
Create (if needed) and return a |
FlashFactory |
getWrapped()
If this factory has been decorated, the implementation doing the decorating may override this method to provide access to the implementation being wrapped. |
@Deprecated public FlashFactory()
public FlashFactory(FlashFactory wrapped)
If this factory has been decorated, the implementation doing the decorating should push the implementation being
wrapped to this constructor. The getWrapped() will then return the implementation being wrapped.
wrapped - The implementation being wrapped.public FlashFactory getWrapped()
If this factory has been decorated, the implementation doing the decorating may override this method to provide access to the implementation being wrapped.
getWrapped in interface FacesWrapper<FlashFactory>public abstract Flash getFlash(boolean create)
Create (if needed) and return a Flash instance for this web application.
create - true to create a new instance for this request if necessary; false to return
null if there's no instance in the current session.Flash.