object session in playframework

Question

How I can store an instance object foreach user session?

I have a class to modeling a complex algorithm. This algorithm is designed to run step-by-step. I need to instantiate objects of this class for each user. Each user should be able to advance step by step their instance.

Answer 1

You can only store the objects in the Cache. The objects must be serializable for this. In the session you can store a key (which must be a String) to the Cache. Make sure that your code still works if the object was removed from the cache (same as a session-timeout). It's explained in http://www.playframework.org/documentation/1.0.3/cache. Hope that solve your problem.

Answer 2

To store values in the session:

//first get the user's session
//if your class extends play.mvc.Controller you can access directly to the session object
Session session = Scope.Session.current();
//to store values into the session
session.put("name", object);

If you want to invalidate / clear the session object

session.clear()