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 package javax.faces.context;

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)
 public abstract class FacesContextFactory implements FacesWrapper<FacesContextFactory> {


If this factory has been decorated, the implementation doing the decorating may override this method to provide access to the implementation being wrapped. A default implementation is provided that returns null.

     public FacesContextFactory getWrapped() {
         return null;


Create (if needed) and return a FacesContext instance that is initialized for the processing of the specified request and response objects, utilizing the specified javax.faces.lifecycle.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.

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 javax.faces.lifecycle.Lifecycle instance being used to process this request
javax.faces.FacesException if a FacesContext cannot be constructed for the specified parameters
java.lang.NullPointerException if any of the parameters are null
    public abstract FacesContext getFacesContext
        (Object contextObject request,
         Object responseLifecycle lifecycle)
        throws FacesException;
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