[rules-users] Re: Ruleflow-group attribute causing rule to not fire

[Roger Tanuatmadja]

Thanks Kris,




On 5/21/08, Kris Verlaenen <kris.verlaenen at cs.kuleuven.be> wrote:
>
>  This is expected behaviour, let me try to explain.
>
> By adding the ruleflow-group attribute to your rules, you are stating that
> these rule should not be executed as normal, but that the order in which
> these rules should be executed is specified by a ruleflow.  Activations will
> be created for rules that are part of a ruleflow-group, but they will only
> be executed if the ruleflow-group is activated. To make sure that rules with
> a ruleflow-group are executed, you must:
>  1. Create a ruleflow that specifies when the rules should be activated
> (using ruleset nodes)
>  AND
>  2. Start the ruleflow whenever appropriate.  My guess is that you are not
> starting the ruleflow, so the corresponding ruleflow-groups are never
> activated.  You can either start a ruleflow manually in your code
> (workingMemory.startProcess("id_of_your_ruleflow"), for example right before
> calling workingMemory.fireAllRules()), or using a rule (probably with a high
> salience) with as consequence
> drools.getWorkingMemory().startProcess("id_of_your_ruleflow").
>
> It is also normal that all other rules that are not tagged with a
> ruleflow-group attribute just execute as before, even in the presence of
> ruleflows, both can be used side by side.
>
> Kris
>
>
> ----- Original Message -----
> *From:* Roger Tanuatmadja <rogerst at gmail.com>
> *To:* rules-users at lists.jboss.org
>  *Sent:* Monday, May 19, 2008 9:25 PM
> *Subject:* [rules-users] Re: Ruleflow-group attribute causing rule to not
> fire
>
>
>
>  From: "Roger Tanuatmadja" <rogerst at gmail.com>
>> To: rules-users at lists.jboss.org
>> Date: Mon, 19 May 2008 11:55:19 -0700
>> Subject: Ruleflow-group attribute causing rule to not fire
>> Hi,
>>
>> I am new to both rules engine and Drools. I am currently evaluating Drools
>> 4.0.7 for use in our new project.
>> Basically I have been writing a bunch of individual rules and things have
>> been fine, the rules that I expected to fire were fired, etc, etc. I then
>> proceeded to investigate rule flows. I started innocently enough i.e. adding
>> the ruleflow-group attribute to some of my rules. I also defined a ruleflow
>> mapping (.rfm).
>>
>> I then reran my unit-tests (WITHOUT reading the rules in as rule flows)
>> and some of my rules were no longer firing!!. I added an Agenda Listener to
>> my code and
>> 1. without the ruleflow-group attribute, activations were created, and
>> fired.
>> 2. with the ruleflow-group attribute, activations were created but not
>> fired.
>>
>> Using the debugger yielded the same logical outcomes i.e. without the
>> ruleflow-group attribute, my breakpoints were hit, but with the attribute
>> specified, none of my breakpoints were hit.
>>
>> My question is: Is this behavior expected? And why? Especially since some
>> other rules (with the attribute specified) continued to work. I've read the
>> documentations as much as possible, but I am really new to this field so I
>> might not even know what questions to ask either.
>>
>> Any help would be greatly appreciated.
>>
>> Thanks,
>>
>> Roger
>>
>>
>>
>>
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