Re: [rules-users] Drools fusion and absence of events

Richard, It depends on which mode you are running the engine (STREAM or CLOUD) and in case you are using STREAM, which clock are you using. If you are using CLOUD, Drools assumes all facts/events are available, and does not wait to fire the activation. If you are using STREAM mode, then Drools will delay the firing of the rule with a temporal negative pattern for the necessary time (10s in your case) and if after that time the rule is still active, it will fire it. The type of session clock you use, obviously influences the flow of time, where the 10s might be real time, or pseudo time controlled by the application. The way the rule is written is consistent with the intent you described in your e-mail, so my guess is that you might be using different configurations as described above. []s Edson 2009/10/28 Richard Ambridge <Richard.Ambridge(a)sun.com&gt; > Hi, > Trying to get to grips with Fusion and absence of events... > > If I have a Bean that has just a simple variable, e.g. class > MyBean { private String name; getter+setter } > > I want to use events to determine when an object with name=="one" > is available, and no object with name=="two" appears within 10 seconds.. > > So, I write a rule: > > declare MyBean > @role( event) > end > > rule "myrule' > when > $a : MyBean(name=="one"); > not( MyBean(name=="two", this after [0s,10s] $a)) > then > //do something > end > > > If I inject an object with Name="one", and then wait 10seconds, I > get the 'myrule' fired, great! > > But, if i inject an object with name="one" and then 1second later I > inject an object with name="other" > the 'myrule' is fired.. > > Looking at the manual, this seems kind of correct, the rule says if > I have a "one" and not a bean with name=="two" > which I do, as I have a 'one' and a 'other' > > But, how do I write the rule to say, I have a 'one' and 'two' doesn't > turn up? > > Cheers > Ric > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > -- Edson Tirelli JBoss Drools Core Development JBoss by Red Hat @ www.jboss.com _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users