[rules-users] How to access data after rule fires

[Steven Williams]

If you put an X or something in the cell (i.e. just don't leave it empty) it
should also work.

On Tue, Jan 13, 2009 at 10:57 AM, Edson Tirelli <tirelli at post.com> wrote:

>
>      The action is not being executed. I don't use decision tables
> frequently, but I think that it ignores empty cells and is generating an
> empty consequence for your rule. Usually, you would place the method call on
> the header prototype and the parameter in the cell. So your cell would be:
>
> | hoover | true |
> | xyz | false |
>
>      The method prototype would be something like (please check the correct
> syntax in the manual):
>
> brand.setGoodBrand( $param );
>
>      Where the engine would replace $param by the value you write in the
> cell.
>
>
>      []s
>      Edson
>
> 2009/1/12 Costello, Robert <rcost10 at searshc.com>
>
>>  I tried that and it returned false, which doesn't make sense to me since
>> the rule firing is to set the value to true, and in the execution the rule
>> does fire.
>>
>>
>>
>>         StatefulKnowledgeSession session =
>> kbase.newStatefulKnowledgeSession();
>>
>>         Product p = *new* Product();
>>
>>         p.setBrand("hoover");
>>
>>         session.insert( p );
>>
>>         *int* u = session.fireAllRules();
>>
>>
>>
>>         System.*out*.println(u + " many rules fired");
>>
>>         System.*out*.println("is brand good? " + p.isGoodBrand());
>>
>>
>>
>> Here's a snippet of the rule (decision table)
>>
>>
>>
>>
>>
>> * *
>>
>> CONDITION
>>
>> ACTION
>>
>> * *
>>
>> Product
>>
>> * *
>>
>> brand
>>
>> setGoodBrand(true);
>>
>> *Cases*
>>
>> hoover match case
>>
>>
>>
>> *Brand Check*
>>
>> hoover
>>
>> * *
>>
>>
>>
>> And the console returns:
>>
>>
>>
>> 1 many rules fired
>>
>> is brand good? false
>>
>>
>>
>>
>>
>>
>>
>> Robert Costello
>>
>> Lead Systems Engineer
>>
>> IMA Performance
>>
>> E3- 279A
>>
>> 847.286.0910
>>
>>
>>
>>
>>
>> -----Original Message-----
>> *From:* rules-users-bounces at lists.jboss.org [mailto:
>> rules-users-bounces at lists.jboss.org] *On Behalf Of *Edson Tirelli
>> *Sent:* Monday, January 12, 2009 4:16 PM
>> *To:* Rules Users List
>> *Subject:* Re: [rules-users] How to access data after rule fires
>>
>>
>>
>>
>>    Can't you keep the reference to your object while firing the rules?
>>
>> MyObject x = ...
>> ksession.insert( x );
>> ksession.fireAllRules();
>> boolean result = x.getBooleanAttribute();
>>
>>     []s
>>     Edson
>>
>> 2009/1/12 Costello, Robert <rcost10 at searshc.com>
>>
>> So, how do I access data after the rules fire?
>>
>> If one has a rule which modifies a field on an object (a boolean, for
>> example), and you want to return the object after the rules are
>> complete, how do you do it?
>>
>> I tried this using a StatefulKnowledgeSession, getting an object
>> collection after the rules fire, but I don't see that this works.
>>
>> Also googled the heck out of this and looked in all the documentation.
>> I must be missing something, because the docs generally are pretty good.
>>
>>
>> Any hints?
>>
>> Thanks in advance,
>>
>> Robert Costello
>>
>>
>> _______________________________________________
>> rules-users mailing list
>> rules-users at lists.jboss.org
>> https://lists.jboss.org/mailman/listinfo/rules-users
>>
>>
>>
>>
>> --
>>  Edson Tirelli
>>  JBoss Drools Core Development
>>  JBoss, a division of Red Hat @ www.jboss.com
>>
>> _______________________________________________
>> rules-users mailing list
>> rules-users at lists.jboss.org
>> https://lists.jboss.org/mailman/listinfo/rules-users
>>
>>
>
>
> --
>  Edson Tirelli
>  JBoss Drools Core Development
>  JBoss, a division of Red Hat @ www.jboss.com
>
> _______________________________________________
> rules-users mailing list
> rules-users at lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
>


-- 
Steven Williams

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