I am not sure to have fully understood you last requirement, nor if you set the global inside or outside the rules. Anyway, I see these options : - declare your globals for all packages, but it seems that this is not what you want - enclose the global setting in a try...catch and just forget the thrown exception. It does not harm the session at all. - use kSession.getGlobals() that returns all the globals' ID, and only set if the ID is there (but it is the same thing done in the setGlobal(String) anyway). I am using this last way to set 'as much globals as I can', according to their names/types and my 'config' POJO attributes names (something close to spring auto-injection idea). Hope this helps ----- Mail original ----- De: "gqmulligan" <gqmulligan(a)gmail.com&gt; À: rules-users(a)lists.jboss.org Envoyé: Jeudi 21 Juin 2012 21:46:37 Objet: [rules-users] Setting unused globals on a session I save many different knowledge packages for different accounts to a database. Most accounts use a particular service to pull data from the database but not all of them. Because of this I wanted to set this service as a global on the session. However, because not all accounts use the service I get an exception when I try to set it on the session for an account that does not use the service anywhere in its rules. Does an exception really need to be thrown in this case? Also, do I have any options to work around this exception without having some sort of "master" rule that is automatically put into all accounts and declares all globals? The service is being pulled from a bean so I would like to stay away from having to find it by name and keep to injecting any global services if possible. Thanks. -- View this message in context: http://drools.46999.n3.nabble.com/Setting-unused-globals-on-a-session-tp4... Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

Vincent, I am looking at using your third option but when I call kSession.getGlobals() but there aren't any global variables set in there. I looked at the source to see what setGlobal was doing and that looks like it checks the Globals on the internal session which gets it from its internal rule base. I don't have access to the internal rule base's globals from the StatefulKnowledgeSession interface and would have to do a cast in order to get the internal rule base to get the global list I need. Does this sound like the right answer or am I missing something simple? I am using Drools 5.3 by the way in case that makes a difference. -- View this message in context: http://drools.46999.n3.nabble.com/Setting-unused-globals-on-a-session-tp4... Sent from the Drools: User forum mailing list archive at Nabble.com.

Mind you, it's not in the "stable" API, but I suppose it still works with 5.4.0. It's one of the several thing I keep nagging about: that what you can program in DRL - which is considered to be stable - you should be able to retrieve via the stable API, at runtime. Preaching to deaf ears. :-\ -W On 22/06/2012, gqmulligan <gqmulligan(a)gmail.com&gt; wrote: