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Java Enterprise Edition (EE)

ExternalContextFactory


javax.faces.context
Class ExternalContextFactory

java.lang.Object
  javax.faces.context.ExternalContextFactory
All Implemented Interfaces:
FacesWrapper<ExternalContextFactory>
public abstract class ExternalContextFactory
extends java.lang.Object
implements FacesWrapper<ExternalContextFactory>

ExternalContextFactory is a factory object that creates (if needed) and returns new ExternalContext instances, initialized for the processing of the specified request and response objects.

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

   ExternalContextFactory factory = (ExternalContextFactory)
    FactoryFinder.getFactory(FactoryFinder.EXTERNAL_CONTEXT_FACTORY);
 

Constructor Summary
ExternalContextFactory()
           
 
Method Summary
abstract  ExternalContext getExternalContext(java.lang.Object context, java.lang.Object request, java.lang.Object response)
          Create (if needed) and return an ExternalContext instance that is initialized for the processing of the specified request and response objects, for this web application.
 ExternalContextFactory 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

ExternalContextFactory

public ExternalContextFactory()
Method Detail

getWrapped

public ExternalContextFactory getWrapped()

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.

Specified by:
getWrapped in interface FacesWrapper<ExternalContextFactory>
Since:
2.0

getExternalContext

public abstract ExternalContext getExternalContext(java.lang.Object context,
                                                   java.lang.Object request,
                                                   java.lang.Object response)
                                            throws FacesException

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

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
Throws:
FacesException - if a ExternalContext cannot be constructed for the specified parameters
java.lang.NullPointerException - if any of the parameters are null


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