Thanks Edson. That helped. One more thing, can’t we execute something simple like: ObjectA(units != families)
When both units & families are defined as int in ObjectA with their public get and set methods. This is the exception I am receiving.
org.drools.rule.InvalidRulePackage: Unable to return Declaration for identifier 'families' : [Rule name=Rule6, agendaGroup=Rating, salience=0, no-loop=false] Its even showing correctly in drl editor. If I swap the positions of units & families then the same exception is thrown for ‘units’.
regards,
saleem
-----Original Message-----
From: rules-users-bounces@lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Edson Tirelli
Sent: Tuesday, August 21, 2007 1:56 PM
To: Rules Users List
Subject: Re: [rules-users] Minor Issue in writing DSL
Saleem,
For sure, your mapping must have some typo or mistake. A rule like this works and is correct:
rule XYZ
when
ObjectA( application==true || banker==true || officer==true )
then
// do something
endDrools does NOT inspect object fields... only public methods.
If you are using a DSL, make sure your "drl" file is named "dslr" (this is new in 4.0), so when you open it in eclipse, you have a tab that shows you the result of the DSL template processing. This way you will be able to see any eventual mapping mistake.
[]s
Edson
2007/8/21, Saleem Lakhani < Saleem.Lakhani@citizensfla.com>:When I use the syntax below and write like:
[when]ABC=ObjectA(application==true || banker==true || officer==true)
on drl it gives me the following error:
Multiple markers at this line:
- unknown:116:39 Unexpected token '=='
- unknown:116:25 Unexpected token '||'
- unknown:116:64 Unexpected token '=='
Again, there are NO attributes in ObjectA named application, banker or officer.
Thanks
-----Original Message-----
From: rules-users-bounces@lists.jboss.org [mailto: rules-users-bounces@lists.jboss.org] On Behalf Of Edson Tirelli
Sent: Tuesday, August 21, 2007 9:49 AM
To: Rules Users List
Subject: Re: [rules-users] Minor Issue in writing DSL
Drools respects encapsulation, so it works with javabean method name conventions. If you have a method isApplication() that returns a boolean, does not matter how your class calculates the return value. Same for any other method. In 4.0, you can write:
ObjectA( application == true || banker == true )
To map that as a DSL, just follow your usual procedure and syntax.
[]s
Edson2007/8/21, Saleem Lakhani < Saleem.Lakhani@citizensfla.com>:
Hi,
If I had a rule written in DSL using Drools 3.0 like;
1. [when] when1=r : ObjectA( )
2. [when] when2=eval(r.isApplication() || r.isBanker())
There are no attributes in class Object with name application and banker but there are methods in ObjectA with names isApplication() & isBanker() which does some work and return Boolean based on some facts.
What is the correct way of writing the same rule using Drools 4.0 ?
Also, if the above attributes were present in ObjectA what would have been the best way to write it in DSL using Drools 4.0
Thanks,
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--
Edson Tirelli
Software Engineer - JBoss Rules Core Developer
Office: +55 11 3529-6000
Mobile: +55 11 9287-5646
JBoss, a division of Red Hat @ www.jboss.com
_______________________________________________
rules-users mailing list
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https://lists.jboss.org/mailman/listinfo/rules-users
--
Edson Tirelli
Software Engineer - JBoss Rules Core Developer
Office: +55 11 3529-6000
Mobile: +55 11 9287-5646
JBoss, a division of Red Hat @ www.jboss.com_______________________________________________rules-users mailing list