Given that sA, eA, dB are start time, end time and duration of event A, we have, for any two events, the interval [s,e] containing both defined by: s = min( sA, sB ) e = max( eA, eB ) = max( sA+dA, sB+dB ) Thus, the condition for A and B happening withing an interval of duration D is: e - s <= D You can put this expression into an eval() CE. -W On 13 January 2011 15:45, Tina Vießmann <tviessmann(a)stud.hs-bremen.de <mailto:tviessmann@stud.hs-bremen.de>> wrote: Hi, I'm trying to find a easy way to express that two events A and B have to happen during the same time interval. The events have each a duration > 0. A example condition could be: The event A and B have to happen during the same 60 seconds. For me it includes several possibilites: * A can start before B and ~ end before B starts ~ end during B ~ end after B ends * The same can be possible for B * A and B start/end/both at the same time In any case the maximum duration from the first start time to the last end time is e.g. 60s. Is there a easy way to express that. I can only think of specifying the several possibilities as conditions. Thank you! :) Tina _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org <mailto:rules-users@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