My understanding is that this web application will be deployed on some application server and you need to implement the SSO using OpenSSO for it. For this purpose, you will need to have folliwng modules:
- Idenitity Provider (IdP) that will provide SSO service to your application.
- Service Provider (SP) module that will interact with IdP and your application.
OpenSSO can be used to define both IdP and SP. While configuring IdP is easy but the SP part is a bit complicated as you will have to also use the Policy Agent to protect your application and interface with the SP part of OpenSSO. Once you configure the IdP and SP, you will need to configure the Policy Agent specific for the application server on which your application is deployed. For WebLogic, here is the link:
There may be other easier solutions (in terms of architecture) which I'm not aware of. And maybe this is why I was destined to follow up on one of the issues at http://forums.sun.com/thread.jspa?threadID=5436607