[rules-users] How Can a Drools Rule call another Drools Rule?

[Socrates Frangis]

Keep in mind that rules are declarative, it is against the nature of a rule
based expert system to force a rule to fire; youre kind of treating the rule
like a function.

My best advice is....

1)Create a POJO called "Flag", store a String and Boolean inside of it.

2)On the RHS of the first rule, create the POJO and set the string to
something like "rule-03-fired" and set the boolean to 'true'

3)In the rule you want to fire, add a pattern to check for a Flag Fact
Template with String value 'rule-03-fired' and 'true'

Note, this is normally done in CLIPS/JESS as logical assertions, but Drools
does not have this. However, i'm sure it's implemented the same on the back
end.

2010/8/21 Michael Anstis <michael.anstis at gmail.com>

> Look at the API; the overloaded method you use will only fire 2 rules.
>
> You probably need fireAllRules();
>
> 2010/8/20 Sanjib Karmakar <sanjibk at skytechsolutions.co.in>
>
>>
>> Sir
>>
>> Thank you very much for your reply.
>> In fact what I wanted to execute the specific rule out of say 10 rules.
>>
>> I have tried
>> ksession.fireAllRules(2);
>> Then only first 2 rules get executed.
>>
>> Please let me know if there is any way-out to call specific rules out of
>> bunch of rules.
>> It would be extremely helpful if you please share a code snippet regarding
>> this.
>>
>> Regards
>> Sanjib Karmakar
>> SkyTech Solutions Pvt. Ltd
>>
>> Please consider the environment before printing this email.
>>
>>
>>  *"Wolfgang Laun-2 [via Drools - Java Rules Engine]" <[hidden email]<http://user/SendEmail.jtp?type=node&node=1238924&i=0>
>> >*
>>
>> 08/19/2010 07:45 PM
>>   To
>> Sanjib Karmakar <[hidden email]<http://user/SendEmail.jtp?type=node&node=1238924&i=1>
>> >
>> cc
>>   Subject
>> Re: How Can a Drools Rule call another Drools Rule?
>>
>>
>>
>>
>> Rules are never "called". Changes in WM create (and also delete)
>> "activations": tuples consisting of a rule and the fact objects
>> matching the left hand side patterns. From this set of activations,
>> rule right hand sides are executed according to salience (and other
>> criteria).
>>
>> Perhaps if you describe the actual problem...?
>>
>> -W
>>
>>
>> On 19 August 2010 06:58, Sanjib Karmakar <*[hidden email]*<http://user/SendEmail.jtp?type=node&node=1225490&i=0&by-user=t>>
>> wrote:
>>
>> >
>> > Hi friends
>> >
>> > I would like to execute a rule say Rule-1 from inside another rule say
>> > Rule-2.
>> > In project I am using xml and not drl, and I am using Drools 5.0
>> >
>> > Please let me know how to call a rule from another rule.
>> >
>> > Thanks
>> > Sanjib
>> > --
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