Table used by StandardSessionManager to cross reference User
objects and sessions. This table does not hold references to the
user and session objects. Instead it only cross-references the
session keys and user names. An underlying assumption is that the
user name can be used as a unique reference to the user.
N.B. It is assumed that this class is only used by StandardSessionManager
and that it is responsible for providing high level locks instead of
synchronizing
version: $Revision: 1.2 $ author: Kyle Clark