Hi, I am a newbie in drools. There are a lot of simple rules in a scenario. For example rule 1 when Product( id ==1, usage == 1) $decision : Decision() then $decision.setValue(1); end rule 2 when Product( id ==2, usage == 1) $decision : Decision() rule 3 when Product( id ==3, usage == 1) $decision : Decision() rule 4 when Product( id ==4, usage == 1) $decision : Decision() rule 5 when Product( id ==5, usage == 1) $decision : Decision() ...... I have a Product fact whose id = 5 and usage = 1, in my first thinking, only rule 5 is matched, there should be not much more different between 1 rule and a lot of rules in runtime. But the result shows that they are different. More rules will cost more time. If there are 1 thousand rules, some Node and Sink will execute 1 thousand times. My question is how to optimize this scenario? -- View this message in context: http://www.nabble.com/optimization-on-a-lot-of-simple-rules-tp24556724p24... 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

Hi, I am a newbie in drools. There are a lot of simple rules in a scenario. For example rule 1 when Product( id ==1, usage == 1) $decision : Decision() then $decision.setValue(1); end rule 2 when Product( id ==2, usage == 1) $decision : Decision() rule 3 when Product( id ==3, usage == 1) $decision : Decision() rule 4 when Product( id ==4, usage == 1) $decision : Decision() rule 5 when Product( id ==5, usage == 1) $decision : Decision() ...... I have a Product fact whose id = 5 and usage = 1, in my first thinking, only rule 5 is matched, there should be not much more different between 1 rule and a lot of rules in runtime. But the result shows that they are different. More rules will cost more time. If there are 1 thousand rules, some Node and Sink will execute 1 thousand times. My question is how to optimize this scenario? -- View this message in context: http://www.nabble.com/optimization-on-a-lot-of-simple-rules-tp24556724p24... 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

I am starting to evaluate RuleFlow. I would have one question: is it possible with eclipse designer to create custom node, and save its definition somehow, so that it becomes available in component panel, by some import, or update mechanism? If it is, how this can be done? My wish is to provide custom rule sets and custom work item nodes for WS invocations to the client, who will create Rule Flow by himself with enriched set of nodes. I could not find that in documentation, although I think I read it is possible somewhere. Thanks and best, Milan _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

It's difficult to suggest an optimized form for your rules 1-infinity, since we do not know what you want to achieve. The crude duplication of rules where only the constant to be matched with Product.id varies can, most likely, be avoided. -W On Sun, Jul 19, 2009 at 3:15 PM, nesta <nesta.fdb(a)163.com&gt; wrote: > > Hi, > > I am a newbie in drools. There are a lot of simple rules in a scenario. > For example > rule 1 > when > Product( id ==1, usage == 1) > $decision : Decision() > then > $decision.setValue(1); > end > > rule 2 > when Product( id ==2, usage == 1) > $decision : Decision() > rule 3 > when Product( id ==3, usage == 1) > $decision : Decision() > rule 4 > when Product( id ==4, usage == 1) > $decision : Decision() > rule 5 > when Product( id ==5, usage == 1) > $decision : Decision() > ...... > > I have a Product fact whose id = 5 and usage = 1, in my first thinking, > only > rule 5 is matched, there should be not much more different between 1 rule > and a lot of rules in runtime. > > But the result shows that they are different. More rules will cost more > time. If there are 1 thousand rules, some Node and Sink will execute 1 > thousand times. > > My question is how to optimize this scenario? > -- > View this message in context: > http://www.nabble.com/optimization-on-a-lot-of-simple-rules-tp24556724p24... > 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 > _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

Well, what is the realtion between id, usage and the result that's to be stored in a Decision or a global? Typically, such rules could be written as rule x no-loop true when $d : Decision() $p :Product( id == 1, $usage : usage ) then compute/store value, depending on the formula for id == 1 (using usage) end // similar rule for id == 2,3,... If value is a straightforward function of id (and usage), then implement a function compValue and use a single rule, e.g.: rule x no-loop true when $d : Decision() Product( $id : id, $usage : usage) then modify $d value to compValue( $id, $usage ) Distinguishing all individual combinations of id and usage on the LHS seems excessive. The ordering of CEs also affects execution times. -W On 7/20/09, nesta <nesta.fdb(a)163.com&gt; wrote: > > > In this scenario, there are 1000 products, different product has > different > price, besides this, the price is affected by usage. I want to use > Product.id to match the rules. > > As you mentioned "The crude duplication of rules where only the constant > to > be matched with > Product.id varies can, most likely, be avoided." > > How to avoid it in this scenario? > > > Wolfgang Laun-2 wrote: > > > > It's difficult to suggest an optimized form for your rules 1-infinity, > > since > > we do not know what you want to achieve. > > > > The crude duplication of rules where only the constant to be matched > with > > Product.id varies can, most likely, be avoided. > > > > -W > > > > > > > > On Sun, Jul 19, 2009 at 3:15 PM, nesta <nesta.fdb(a)163.com&gt; wrote: > > > >> > >> Hi, > >> > >> I am a newbie in drools. There are a lot of simple rules in a > scenario. > >> For example > >> rule 1 > >> when > >> Product( id ==1, usage == 1) > >> $decision : Decision() > >> then > >> $decision.setValue(1); > >> end > >> > >> rule 2 > >> when Product( id ==2, usage == 1) > >> $decision : Decision() > >> rule 3 > >> when Product( id ==3, usage == 1) > >> $decision : Decision() > >> rule 4 > >> when Product( id ==4, usage == 1) > >> $decision : Decision() > >> rule 5 > >> when Product( id ==5, usage == 1) > >> $decision : Decision() > >> ...... > >> > >> I have a Product fact whose id = 5 and usage = 1, in my first > thinking, > >> only > >> rule 5 is matched, there should be not much more different between 1 > rule > >> and a lot of rules in runtime. > >> > >> But the result shows that they are different. More rules will cost > more > >> time. If there are 1 thousand rules, some Node and Sink will execute 1 > >> thousand times. > >> > >> My question is how to optimize this scenario? > >> -- > >> View this message in context: > >> > http://www.nabble.com/optimization-on-a-lot-of-simple-rules-tp24556724p24... > >> 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 > >> > > > > _______________________________________________ > > 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/optimization-on-a-lot-of-simple-rules-tp24556724p24... > 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 > _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users