Use of WordPress in an application

Hello

I’m not sure if I’ve posted this in the correct forum or not but I have been given the task of incorporating a BBS into an application and am trying to determine if WordPress is the correct one to use.

Basically, the application use Apache Tomcat to host a load of Java servlets and JSPs written using NetBeans with a MySQL database. The application is broken down into communities and a user of the system can be a member of multiple communities.

I have two major questions are as follows:

Can WordPress access be restricted to one community at a time if WordPress is called from a web page? I have to have each community’s BBS completely separate from all others.
If access is directly from a web page, is it necessary for the user to log into WordPress? The user will already have been logged in to the application anyway.

So any advice is welcome.

Thanks

Martin O’Shea.