Package javax.faces.context

Class FacesContextFactory

java.lang.Object

javax.faces.context.FacesContextFactory

All Implemented Interfaces:

FacesWrapper<FacesContextFactory>

public abstract class FacesContextFactory
extends java.lang.Object
implements FacesWrapper<FacesContextFactory>

FacesContextFactory is a factory object that creates (if needed) and returns new FacesContext instances, initialized for the processing of the specified request and response objects. Implementations may take advantage of the calls to the release() method of the allocated FacesContext instances to pool and recycle them, rather than creating a new instance every time.

There must be one FacesContextFactory instance per web application that is utilizing JavaServer Faces. This instance can be acquired, in a portable manner, by calling:

   FacesContextFactory factory = (FacesContextFactory)
    FactoryFinder.getFactory(FactoryFinder.FACES_CONTEXT_FACTORY);
 

Usage: extend this class and push the implementation being wrapped to the constructor and use getWrapped() to access the instance being wrapped.

Constructor Summary

Constructors

Constructor	Description
FacesContextFactory()	Deprecated. Use the other constructor taking the implementation being wrapped.
FacesContextFactory(FacesContextFactory wrapped)	If this factory has been decorated, the implementation doing the decorating should push the implementation being wrapped to this constructor.

Method Summary

Modifier and Type	Method	Description
abstract FacesContext	getFacesContext(java.lang.Object context, java.lang.Object request, java.lang.Object response, Lifecycle lifecycle)	Create (if needed) and return a FacesContext instance that is initialized for the processing of the specified request and response objects, utilizing the specified Lifecycle instance, for this web application.
FacesContextFactory	getWrapped()	If this factory has been decorated, the implementation doing the decorating may override this method to provide access to the implementation being wrapped.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FacesContextFactory

@Deprecated
public FacesContextFactory()

Deprecated. Use the other constructor taking the implementation being wrapped.

FacesContextFactory

public FacesContextFactory(FacesContextFactory 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.

Parameters:

wrapped - The implementation being wrapped.

Method Detail

getWrapped

public FacesContextFactory getWrapped()

If this factory has been decorated, the implementation doing the decorating may override this method to provide access to the implementation being wrapped.

Specified by:

getWrapped in interface FacesWrapper<FacesContextFactory>

Returns:

the wrapped instance.

Since:

2.0

getFacesContext

public abstract FacesContext getFacesContext(java.lang.Object context,
                                             java.lang.Object request,
                                             java.lang.Object response,
                                             Lifecycle lifecycle)
                                      throws FacesException

Create (if needed) and return a FacesContext instance that is initialized for the processing of the specified request and response objects, utilizing the specified Lifecycle instance, for this web application.

The implementation of this method must ensure that calls to the getCurrentInstance() method of FacesContext, from the same thread that called this method, will return the same FacesContext instance until the release() method is called on that instance.

The implementation must call ExternalContextFactory.getExternalContext(java.lang.Object, java.lang.Object, java.lang.Object) to produce the ExternalContext for the FacesContext instance.

The default implementation must call ExceptionHandlerFactory.getExceptionHandler() and make it so the return from that method is what gets returned from a call to FacesContext.getExceptionHandler() on the returned FacesContext instance.

The default implementation must call ClientWindowFactory.getClientWindow(javax.faces.context.FacesContext) and make it so the return from that method is what gets returned from a call to ExternalContext.getClientWindow() on the returned ExternalContext instance.

Parameters:

context - In servlet environments, the ServletContext that is associated with this web application

request - In servlet environments, the ServletRequest that is to be processed

response - In servlet environments, the ServletResponse that is to be processed

lifecycle - The Lifecycle instance being used to process this request

Returns:

the instance of FacesContext.

Throws:

FacesException - if a FacesContext cannot be constructed for the specified parameters

java.lang.NullPointerException - if any of the parameters are null