Listener interface for changes to a session.
An event is fired for every object added, every object
deleted, and every change made to the scalar properties
of an object.
For each change, only one of the methods below will be
called. The sessionChanged method is for use
in all situations where none of the other three methods
apply. There are currently no known situations where none
of the other three methods apply so the sessionChanged
method may need to be removed.
author: Nigel Westbury |