Class FacesRequestAttributes

java.lang.Object
org.springframework.web.context.request.FacesRequestAttributes
All Implemented Interfaces:
RequestAttributes
Direct Known Subclasses:
FacesWebRequest
public class FacesRequestAttributes extends Object implements RequestAttributes
RequestAttributes adapter for a JSF FacesContext. Used as default in a JSF environment, wrapping the current FacesContext.

NOTE: In contrast to ServletRequestAttributes, this variant does not support destruction callbacks for scoped attributes, neither for the request scope nor for the session scope. If you rely on such implicit destruction callbacks, consider defining a Spring RequestContextListener in your web.xml.

Requires JSF 2.0 or higher, as of Spring 4.0.

Since:
2.5.2
Author:
Juergen Hoeller
See Also:

  • Constructor Details

    • FacesRequestAttributes

      public FacesRequestAttributes(FacesContext facesContext)
      Create a new FacesRequestAttributes adapter for the given FacesContext.
      Parameters:
      facesContext - the current FacesContext
      See Also:

  • Method Details

    • getFacesContext

      protected final FacesContext getFacesContext()
      Return the JSF FacesContext that this adapter operates on.

    • getExternalContext

      protected final ExternalContext getExternalContext()
      Return the JSF ExternalContext that this adapter operates on.
      See Also:

    • getAttributeMap

      protected Map<String,Object> getAttributeMap(int scope)
      Return the JSF attribute Map for the specified scope.
      Parameters:
      scope - constant indicating request or session scope
      Returns:
      the Map representation of the attributes in the specified scope
      See Also:

    • getAttribute

      public @Nullable Object getAttribute(String name, int scope)
      Description copied from interface: RequestAttributes
      Return the value for the scoped attribute of the given name, if any.
      Specified by:
      getAttribute in interface RequestAttributes
      Parameters:
      name - the name of the attribute
      scope - the scope identifier
      Returns:
      the current attribute value, or null if not found

    • setAttribute

      public void setAttribute(String name, Object value, int scope)
      Description copied from interface: RequestAttributes
      Set the value for the scoped attribute of the given name, replacing an existing value (if any).
      Specified by:
      setAttribute in interface RequestAttributes
      Parameters:
      name - the name of the attribute
      value - the value for the attribute
      scope - the scope identifier

    • removeAttribute

      public void removeAttribute(String name, int scope)
      Description copied from interface: RequestAttributes
      Remove the scoped attribute of the given name, if it exists.

      Note that an implementation should also remove a registered destruction callback for the specified attribute, if any. It does, however, not need to execute a registered destruction callback in this case, since the object will be destroyed by the caller (if appropriate).

      Specified by:
      removeAttribute in interface RequestAttributes
      Parameters:
      name - the name of the attribute
      scope - the scope identifier

    • getAttributeNames

      public String[] getAttributeNames(int scope)
      Description copied from interface: RequestAttributes
      Retrieve the names of all attributes in the scope.
      Specified by:
      getAttributeNames in interface RequestAttributes
      Parameters:
      scope - the scope identifier
      Returns:
      the attribute names as String array

    • registerDestructionCallback

      public void registerDestructionCallback(String name, Runnable callback, int scope)
      Description copied from interface: RequestAttributes
      Register a callback to be executed on destruction of the specified attribute in the given scope.

      Implementations should do their best to execute the callback at the appropriate time: that is, at request completion or session termination, respectively. If such a callback is not supported by the underlying runtime environment, the callback must be ignored and a corresponding warning should be logged.

      Note that 'destruction' usually corresponds to destruction of the entire scope, not to the individual attribute having been explicitly removed by the application. If an attribute gets removed via this facade's RequestAttributes.removeAttribute(String, int) method, any registered destruction callback should be disabled as well, assuming that the removed object will be reused or manually destroyed.

      NOTE: Callback objects should generally be serializable if they are being registered for a session scope. Otherwise the callback (or even the entire session) might not survive web app restarts.

      Specified by:
      registerDestructionCallback in interface RequestAttributes
      Parameters:
      name - the name of the attribute to register the callback for
      callback - the destruction callback to be executed
      scope - the scope identifier

    • resolveReference

      public @Nullable Object resolveReference(String key)
      Description copied from interface: RequestAttributes
      Resolve the contextual reference for the given key, if any.

      At a minimum: the HttpServletRequest reference for key "request", and the HttpSession reference for key "session".

      Specified by:
      resolveReference in interface RequestAttributes
      Parameters:
      key - the contextual key
      Returns:
      the corresponding object, or null if none found

    • getSessionId

      public String getSessionId()
      Description copied from interface: RequestAttributes
      Return an id for the current underlying session.
      Specified by:
      getSessionId in interface RequestAttributes
      Returns:
      the session id as String (never null)

    • getSessionMutex

      public Object getSessionMutex()
      Description copied from interface: RequestAttributes
      Expose the best available mutex for the underlying session: that is, an object to synchronize on for the underlying session.
      Specified by:
      getSessionMutex in interface RequestAttributes
      Returns:
      the session mutex to use (never null)