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

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