Get Session Attributes Names

[daniel ccss]

Hi all,

In Struts I get the list of session attributes names like this:

     HttpSession session = request.getSession();
     Enumeration enumeration = session.getAttributeNames();

How I can get the the session attributes names in JSF??? Actually I get the
session like this:

            Map session = FacesContext.getCurrentInstance
().getExternalContext().getSessionMap();

And I can get the values of the attributes like this
           Collection collection = session.values();

But this give me the values of the attributes in session, not the attributes
name, I need the attributes names because i need to delete or not some
attributes depending of the name

thanks