Re: [rules-users] How to limit results from a collect statement

I found an interesting implementation to do that. If anyone is interested I could share my solution. Regards, CG Mark Proctor wrote: > > There is no supported way to do this. You could use an inline-eval > against a global, but that is very clunkey. However it does seem like a > good feature idea for a future release, open a jira and I'll look into > getting it included. > > Mark > pentarious wrote: >> Does anyone know a method to limit the number of results from a collect >> statement? I was just wondering how to do something like this: >> $myList : List() from collect( MyObject(myField == "something") ) limit 3 >> //it should put in $myList just the first 3 objects retrieved >> I'm quite sure there is nothing in Drools which can natively support >> something like that. So, how to do that, if needed? I tried this, but it >> seems not to be working (I can't understand why, though): >> $myList : List() from collect( MyObject(myField == "something") ) >> $myObject : MyObject() from $myList >> eval( $myList.indexOf($myObject) < 3 ) >> Indeed, it doesn't work because the link beetween $myList and $myObject >> seems to be released during any execution of the rule (In fact >> $myList.contains($myObject) returns false! Again, I can't understand >> why...) >> >> Any advice would be really appreciated! >> >> Regards, >> >> CG >> > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > > -- View this message in context: http://www.nabble.com/How-to-limit-results-from-a-collect-statement-tf423... Sent from the drools - user mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users