I'm writing a custom user manager for Orion. I need to access a file in the J2EE application structure (such as app/META-INF/um.xml or app/webapp/WEB-INF/um.xml) that contains additional settings for the user manager for a specific application. How can I find the application root (or the deployment directory) for the application where the user manager is installed? The default orion user manager seems to do this with principals.xml... /Magnus