Re: [rules-users] Writting a fusion query with specific time intervals
On 11 July 2011 18:45, Amila Suriarachchi wrote: > yes it is a fixed window. > > How to use the 'cron timers' in a rule file I am bit new to fusion. so if > you show me an article or a code segment regarding this that would be fine. > rule OneMinutesPastEveryFullHour timer( cron: * 1 * * * ? ) when then // get current hour, access counter,... end You might use additional values (e.g., 9-17 for the "hour" field, i.e., '*' after '1'). See man -s 5 crontab for more info. Notice that Drools timer/crontab has an additional leading field for seconds. > > And also how to run a rule just after an event appears? > This assumes that you do not modify Event here or elsewhere. Using a global array with 24 integers initialized to 0 you can do: rule newEvent when $e: Event() then // Count new event globalCounter[hourOf( $e.getTimestamp() )]++; end > > thanks, > Amila. > > -- > View this message in context: > http://drools.46999.n3.nabble.com/Writting-a-fusion-query-with-specific-time-intervals-tp3151010p3159730.html > Sent from the Drools: User forum mailing list archive at Nabble.com. > ___ > rules-users mailing list > rules-users@lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Writting a fusion query with specific time intervals
yes it is a fixed window. How to use the 'cron timers' in a rule file I am bit new to fusion. so if you show me an article or a code segment regarding this that would be fine. And also how to run a rule just after an event appears? thanks, Amila. -- View this message in context: http://drools.46999.n3.nabble.com/Writting-a-fusion-query-with-specific-time-intervals-tp3151010p3159730.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Writting a fusion query with specific time intervals
Your windows don't really slide; they are fixed. It's probably better to add an order event's value into a fact OrderPerHour, where you have one such fact for each hour, doing this when the event appears in the system. (Use no-loop on this rule.) Then, using cron timers, inspect the OrderPerHour fact of the completed hour. -W On 8 July 2011 09:13, Amila Suriarachchi wrote: > As I understood Drools fusion supports sliding windows which can either > time > based on message length based. But can I write a query with specific time > intervals? > > For an example Lets say my CEP engine recive events which has order value. > Now I want to fire an event if the orders within 8.00 am to 9.00 am have > less than $4. In generally firing an event if there are less that > $4 > total order value within any working hour (i.e 8.00 am 5.00 pm) > > is it possible to do this? > > -- > View this message in context: > http://drools.46999.n3.nabble.com/Writting-a-fusion-query-with-specific-time-intervals-tp3151010p3151010.html > Sent from the Drools: User forum mailing list archive at Nabble.com. > ___ > rules-users mailing list > rules-users@lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
