Re: [rules-users] Drools Fusion: updating event duration

From my understaning, i am limitated by:

On 22/02/2012, Edson Tirelli <ed.tirelli(a)gmail.com&gt; wrote: > If your use case somehow has "mutable" events, you can retract, change > the duration and reinsert. But mind the requirements of STREAM mode: Events in each stream must be time-ordered. I.e., inside a given stream, events that happened first must be inserted first into the engine. If reinsertions would violate this, you must run the session in CLOUD mode, which has certain consequences. This is all very well described in the Fusion manual, section on "Event Processing Modes". -W > The engine uses optimizations for the temporal > reasoning that are based on the fact that events should be immutable. That > is why the engine "resolves" the timestamp/duration attributes at insert > time and make them immutable. > > Edson > > 2012/2/22 Matteo Cusmai <cusmaimatteo(a)gmail.com&gt; > >> Hi Edson, >> so, when i want modify an event, i could do as follow: >> >> - clone event; >> - change the duration >> - retract the previuos event >> - insert the new event >> >> Is it right? >> >> Bye bye, >> >> Matteo. >> >> 2012/2/22 Edson Tirelli <ed.tirelli(a)gmail.com&gt; >> >>> >>> Unfortunately you can't update event durations or timestamp. Events >>> are supposed to represent things that happened and as so, are immutable >>> (other than data enrichment). If an event representation is no longer >>> true, >>> that event has to be retracted. Most common case is when you are dealing >>> with atomic events (like start and end atomic events) that represent a >>> complex event. Usually you will have a rule that correlates the start and >>> end atomic events and creates a complex derived event, retracting the >>> atomic ones. >>> >>> Edson >>> >>> 2012/2/22 Matteo Cusmai <cusmaimatteo(a)gmail.com&gt; >>> >>>> >>>> Hi all, >>>> i am using Drools Fusion in multi sensor data fusion system. I have some >>>> rules that generate a new event when some situations occur. But from the >>>> other hand, i would like to update the event, when i understand that new >>>> sensor observation is referring to the same event. I have my Event clazz >>>> with duration field, i try to update it in modify clause, but i have >>>> concern about it, because when i use temporal operator (such as before, >>>> meets, so on) it seems that Drools manage them as event with duration >>>> null. >>>> I could post the code too. >>>> Bye bye, >>>> Matteo. >>>> _______________________________________________ >>>> 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 >>> >>> >> >> _______________________________________________ >> 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