authentication in database instead of container

[Ajay Mallik <am...@mortgagehub.com>]

Hi All,
I am using webdav servlet and my requirement is that I can't use container
based authentication. The username and password information is stored in
another database (not the slide one), and i have to authenticate against
that database.

Any request coming to slide servlet first has to be forwarded to our
authentication module, which if authenticated, forwards the request to slide
servlet. Authorization needs to be taken care by slide. How can I achieve
this? 
Do I need to write some kind of request intercepting filter? How can I
modify Request object so that slide knows the user is authenticated? When I
send the request to slide servlet, all I know is the name of the user, and
whether the user is authenticated or not. I cannot pass the password
information to slide.

I would highly appreciate any insight about how to proceed.

Thanks
Ajay