Re: [rules-users] Help on using Drools with embedded objects

A couple of more questions, I am calling my rules engine from a service and into the session i am inserting the business object. In my service class, I have a few helper functions, which I need to call from my drl file. How can I do that ? Thanks -D Corneil du Plessis wrote: > > You should initialise your globals and then pass them into the session. > Your rule file will have: > > global java.lang.String recipients > global java.lang.String to > global java.lang.String cc > > > On Mon, 2009-02-23 at 06:23 -0800, D1vy@@Ind1@ wrote: > >> Thanks for your help , Sudhir, >> >> I used >> >> rule >> when $a:A(b.z.s=="test"); >> then >> end >> >> And that solved my problem. >> >> But I would like to know one more information about global variables. >> >> package... >> dialect java >> import .., >> >> global java.lang.String recipients=&quot;divya(a)gmail.com&quot; >> global java.lang.String to=&quot;xyz(a)yahoo.com&quot; >> global java.lang.String cc=&quot;abc(a)gmail.com&quot; >> >> rule >> when when $a:A(b.z.s=="divya"); >> then >> $a.setRecipients(recipients); >> $a.setTo(to); >> $a.setCC(cc); >> update($a) >> end >> >> Is this feasible with Drools. I get >> >> unable to comile myfile.drl file >> [9,40]: unknown:9:40 mismatched token: [@49,201:201='=',<71>,9:40]; >> E >> >> exception. Could you please help me with this too. >> >> >> Thanks >> -D >> >> >> >> >> >> >> >> >> Sudhir M-2 wrote: >> > >> > Hi D, >> > I don't know which version of drools are you using. If u are using >> drools >> > 4 >> > or higher you can use 'from' to write rules on nested objects. All u >> need >> > to do is insert the root pbject in the working memory >> > >> > Regards, >> > sudhir. >> > >> > On Mon, Feb 23, 2009 at 2:56 PM, Divya Rajendranath < >> > divya.rajendranath(a)gmail.com&gt; wrote: >> > >> >> Hi, >> >> >> >> I am planning to use Drools - JBoss Rules Engine. My requirement is to >> >> disburse mails from my application to different groups based on >> various >> >> criteria. I want to use Drools here. >> >> >> >> My object structure is as follows: >> >> >> >> class A{ >> >> >> >> String B = ""; >> >> >> >> B b; >> >> >> >> C c; >> >> } >> >> >> >> Hence Obj A has embedded objects within it, and obj B and C further >> has >> >> embedded objects. >> >> >> >> class B { >> >> >> >> String X; >> >> >> >> Z z; >> >> >> >> } >> >> >> >> class Z{ >> >> >> >> String t; >> >> >> >> String s; >> >> >> >> } >> >> >> >> The decision on sending the mails based on the fields in embedded >> objects >> >> of A. I pass instance of A to Drools >> >> >> >> Format of drl file: >> >> >> >> package...; >> >> >> >> import ..; >> >> >> >> rule "Test" >> >> >> >> when $a:A(B(Z(s == "testvalue"))) >> >> >> >> then >> >> >> >> $a.setSomething(); >> >> >> >> update($a); >> >> >> >> end >> >> >> >> I wanted to know if this (accessing fields in embedded/child object) >> is >> >> feasible with Drools. >> >> >> >> I get an error saying "UNable to compile myfile.drl when i try to fo >> >> this. >> >> >> >> Could some one look into this issue and let me know the reason for >> this ? >> >> >> >> >> >> >> >> Thanks >> >> >> >> -D >> >> >> >> _______________________________________________ >> >> 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 >> > >> > >> > > _______________________________________________ > 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/Help-on-using-Drools-with-embedded-objects-tp221580... 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