There are many options you could use. Here are a couple - Insert the service object into WM, than match on it and use it on the RHS to call methods on it - Have the service object as a global and call methods on it - Make the service helper methods static and call them directly
On Wed, Feb 25, 2009 at 10:52 AM, D1vy@@Ind1@ <[email protected]>wrote: > > 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="[email protected]" > >> global java.lang.String to="[email protected]" > >> global java.lang.String cc="[email protected]" > >> > >> 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 < > >> > [email protected]> 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 > >> >> [email protected] > >> >> https://lists.jboss.org/mailman/listinfo/rules-users > >> >> > >> >> > >> > > >> > _______________________________________________ > >> > rules-users mailing list > >> > [email protected] > >> > https://lists.jboss.org/mailman/listinfo/rules-users > >> > > >> > > >> > > > > _______________________________________________ > > rules-users mailing list > > [email protected] > > https://lists.jboss.org/mailman/listinfo/rules-users > > > > > > -- > View this message in context: > http://www.nabble.com/Help-on-using-Drools-with-embedded-objects-tp22158087p22205576.html > Sent from the drools - user mailing list archive at Nabble.com. > > _______________________________________________ > rules-users mailing list > [email protected] > https://lists.jboss.org/mailman/listinfo/rules-users >
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