<div><br></div> If your use case somehow has "mutable" events, you can retract, change the duration and reinsert. 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.<div>
<br></div><div> Edson<br><br><div class="gmail_quote">2012/2/22 Matteo Cusmai <span dir="ltr"><<a href="mailto:cusmaimatteo@gmail.com">cusmaimatteo@gmail.com</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi Edson,<br>so, when i want modify an event, i could do as follow:<br><ul><li>clone event;</li><li>change the duration</li><li>retract the previuos event</li><li>insert the new event</li></ul><p>Is it right?</p><p>Bye bye,</p>
<p>Matteo.<br></p><div class="HOEnZb"><div class="h5"><br><div class="gmail_quote">2012/2/22 Edson Tirelli <span dir="ltr"><<a href="mailto:ed.tirelli@gmail.com" target="_blank">ed.tirelli@gmail.com</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div><br></div> 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.<div>
<br></div><div> Edson<br><br><div class="gmail_quote">2012/2/22 Matteo Cusmai <span dir="ltr"><<a href="mailto:cusmaimatteo@gmail.com" target="_blank">cusmaimatteo@gmail.com</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div><div>
<br>Hi all,
<br>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.
<br>Bye bye,
<br>Matteo.
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<br></div></blockquote></div><span><font color="#888888"><br><br clear="all"><div><br></div>-- <br> Edson Tirelli<br> JBoss Drools Core Development<br> JBoss by Red Hat @ <a href="http://www.jboss.com" target="_blank">www.jboss.com</a><br>
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<br></blockquote></div><br><br clear="all"><div><br></div>-- <br> Edson Tirelli<br> JBoss Drools Core Development<br> JBoss by Red Hat @ <a href="http://www.jboss.com">www.jboss.com</a><br>
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