Re: [rules-users] Checking fact "id"

ok But i think I do not need to differentiate them. I try to explain it better. I have got a set of "Contract" class Facts. All of them inserted into the working memory. But Just one of them is the "main contract", all the others all "related contracts". So , when i write a rule I need to distinguish between a "main contract" (which is unique along the session) and a "related contract". I should write rules like the followings: when $mc: Contract() from maincontract then #rule fired over "the" main contract end when $rc: Contract() from relatedcontract then #rule fired over "a" related contract end I think the only solution to do that is to make "maincontract" and "relatedcontracr" globals. But, if I make them globals, then the rule engine will not be notified about their changes and I do want it to be notified about it. Should I make them "globals" and "facts" as well? Can globals be inserted into the WM as well? Is it too horrible? :D Thank u anyway. Massi ----- Original Message ----- From: Edson Tirelli To: Rules Users List Sent: Saturday, January 05, 2008 12:00 PM Subject: Re: [rules-users] Checking fact "id" What attribute differentiates A1 from A2? Such scenarios usually are solved by an additional constraint... []s Edson 2008/1/4, Massi Gmail < mmquelo(a)gmail.com&gt;: Hi guys, Now I am strugglin' with "fact id checking" or whatever we can call it.... :D Let's take into account the followong scenario: I have class A (it's just a name) javabeans to be inserted into the WM. I define two objects of class A: A1 and A2. Somewhere I do "insert(A1)" and "insert(A2)" ( let's say I do it in the same package of R1 and R2..see below...) Then I define two different rules R1 and R2 that reason over class "A" facts (let's say R1 and R2 are in the same package) . The point is.... I want R1 to fire only on A1 and R2 only on A2. Is that possible in drools? Is there a sort of "fact id" I can reason over? I do not think globals will be of any help, cause in the guide i have read that globals should never be used within LHS. We should never reason over globals. Let me know. Massi _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- Edson Tirelli JBoss Drools Core Development Office: +55 11 3529-6000 Mobile: +55 11 9287-5646 JBoss, a division of Red Hat @ www.jboss.com ------------------------------------------------------------------------------ _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users