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

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