Re: [rules-users] How to inovke a Service...

Thanks Edson - Two questions: 1) Is using Globals (as you mention below) same as using WorkingMemory.setApplicationData(myService) - or is this yet another way to do it. Is there a difference in terms of efficiency? 2) Is there a way to get to the Fact that fired the event from the Event object passed in the AgendaEventListener.afterActivationFired(Event event) recommend pursuing: EventListener invoking a service or service invoked from global Helper class in current WorkingMemory? Any guidance there would be appreciated. Thanks, James Edson Tirelli <tirelli(a)post.com Sent by: Rules Users List rules-users-bounc <rules-users(a)lists.jboss.org&gt; es(a)lists.jboss.or cc g Subject Re: [rules-users] How to inovke a 02/08/2007 02:31 Service... PM Please respond to Rules Users List <rules-users@list s.jboss.org> James, The consequence and function blocks in a DRL file are transformed into a plain java method. It means you can do whatever you want and java allows. So, if you are for instance inside an application server, you cat get your JNDI context from there and do your stuff. Although, it is usually better to have helper classes doing procedural code and keep the consequence code clean to make rules maintance easier. So, for exaple, you can have a helper class that has the actual code to call the service you want and set it as a global for your rulebase. Then in the consequence you call this class method with the given paramenters. Example: package my.package; global my.service.package.ServiceInvoker invoker; rule "Cheese in stock" when $p : Person( $likes : likes ) $c : Cheese( type == $likes, quantity > 0 ) then invoker.sendMessageToPerson( $p, "Your prefered cheese ("+$c.getType()+") is back in stock;" ); end Inside your ServiceInvoker class you create the code to actually send the message (procedural code). This is only one way of doing it, but it is usually what is done. Hope it helps. []s Edson jdepaul wrote: experimenting -- Edson Tirelli Software Engineer - JBoss Rules Core Developer Office: +55 11 3124-6000 Mobile: +55 11 9218-4151 JBoss, a division of Red Hat @ www.jboss.com _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users