A general question about writing servlets... I would like to have a class or object in my servlet where I can go to find out misc. information - the HttpServletRequest object - authentication information (userid, permissions) - database connection information - audit management objects, and objects for loggin activity etc. If this was written as an application (instead of a servlet), then I could do this using the 'Singleton' design pattern, and create a single instance of a class. Or as static methods and variables of a class. But this won't work for a servlet, because what's really needed is one instance for each 'request/session' that is being processed. I know that I can tie things together with cookies or HttpSession objects. But the problem is that I can't figure out a way around the fact that I will need a handle to at least one object (for example, a handle to an HttpSession object that could lead me to the other objects). I don't think this is elegant, because I'd still have to pass an instance of that object to every object/method that might need to get some information. There doesn't seem to be a global way to get it. This also means that many of my methods wouldn't even directly use the object, but would have to carry that handle around as a parameter anyway, in case the lower level methods need it. Imagine, for example, if every method you write in any Java application would need to have "System.out" passed to it, in case there is some method that might need to print to the terminal. Does anyone else feel this way? Is there a preferred solution to this? Or do people write simple servlets where this isn't much of an issue? Thanks Alok Mehta, Research Scientist Wadsworth Center, NYS Dept. of Health ___________________________________________________________________________ To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff SERVLET-INTEREST". Archives: http://archives.java.sun.com/archives/servlet-interest.html Resources: http://java.sun.com/products/servlet/external-resources.html LISTSERV Help: http://www.lsoft.com/manuals/user/user.html
