How do I stuff information from a servlet into a Hibernate Interceptor? only, database, purposes, include

amy

Lemme clarify...For auditting purposes, we want to include the username of the logged in user on certain data records that are changed. ie, if I update a Dog record, we want Dog.updateBy() to be set to quot;tremelunequot; in the database. The only layer that knows about who is logged in is the servlet layer (stored in from session). Is there a way I can automagically get the logged in username to any DAOs doing the updates? I would rather not explicitly pass the username around, as it will involve more code and room for error. ie, I don't want to do this:

dogHandler.saveDog( dog, username );

The way I've done it in the past was to pass in a username when the session is created...In a main controller servlet, I would have something like this (session-per-request):

sessionFactory.createSession( new AuditorInterceptor( getLoggedInUsername() ) );

How can I get info from a servlet into Spring such that it will inject an interceptor with this information? For the record, I'm using Wicket for the web tier.

To be clear: The username could change per-request, so the info would have to be injected at runtime for each request, before the Hibernate session is opened.

You could use a request scoped bean.  However, I would go for a Servlet Filter and a Thread Local variable.

You're saying jump over Spring entirely with a request filter and thread local?


Originally Posted by TremeluneYou're saying jump over Spring entirely with a request filter and thread local?

I wouldn't say it's jumping over Spring.  If you look at Acegi security it does a similar thing with the Authentication credentials.