[rules-users] Identifiers on LHS

[Wolfgang Laun]

You can use an event listener for grabbing the
org.drools.runtime.rule.Activation from a BeforeActivationFiredEvent and
store it in a global for access by RHS code. Activation's List<String>
getDeclarationIDs() and Object getDeclarationValue(String name) provide
access to variables and what's bound to them.

-W

2011/9/19 Isaac Pereira <pereira.zc at gmail.com>

> Sorry for not explaining it before, Mauricio. My intent is to abstract the
> attribute's setting of a class. I'll try to explain the context:
>
> On a defined class i've got certain fields which I tagged with
> annotations. I want to automate the setting of these fields from certain
> objects matched by a rule, the matching between the class fields and the
> objects would be the identifiers. The field annotation holds the expected
> identifier to match. Thus, a general method would be capable to set the
> fields of any class just passing to it the class fields and the identifiers
> metadata.
>
> What i've been developing is related with situation detection. The 'class'
> I refer above is a situation type and the attributes are roles that an
> entity can play in a situation. Each situation type has a rule that defines
> when it is active and must instantiate a new situation and set the
> participant entities.
>
> I''ll talk more about what i'm working on as soon as i get time to write.
>
> Thanks for the help,
>
> 2011/9/19 Mauricio Salatino <salaboy at gmail.com>
>
>> You can get metadata using the kcontext variable but I'm not sure if you
>> can get the information about the identifiers.
>> Can you describe what are you looking to achieve? because the rule is
>> fixed and the identifiers as well. Why do you want to do reflection like
>> stuff in the RHS? I'm just curious..
>>  Cheers
>>
>> 2011/9/19 Isaac Pereira <pereira.zc at gmail.com>
>>
>>> Hi Mauricio,
>>>
>>> I mean a metadata structure that I can iterate on, then I wouldn't need
>>> to explicitely know the identifiers declared into a rule. Analogous to
>>> getting fields from a class using reflection.
>>>
>>> Thanks,
>>>
>>>
>>> 2011/9/19 Mauricio Salatino <salaboy at gmail.com>
>>>
>>>> What do you mean with a mapping between identifiers?
>>>> If you define an identifier and bind a property or an object reference
>>>> to it you can access it in the RHS directly.
>>>> Cheers
>>>>
>>>>  2011/9/19 Isaac Pereira <pereira.zc at gmail.com>
>>>>
>>>>>  Hi,
>>>>>
>>>>> Is there a way to get, on the RHS, a mapping between
>>>>> identifiers, declared on the LHS, and its respectives objects?
>>>>>
>>>>>
>>>>> I would appreciate any help.
>>>>>
>>>>> --
>>>>> Isaac Pereira
>>>>>
>>>>> _______________________________________________
>>>>> rules-users mailing list
>>>>> rules-users at lists.jboss.org
>>>>> https://lists.jboss.org/mailman/listinfo/rules-users
>>>>>
>>>>>
>>>>
>>>>
>>>> --
>>>>  - CTO @ http://www.plugtree.com
>>>>  - MyJourney @ http://salaboy.wordpress.com
>>>> - Co-Founder @ http://www.jugargentina.org
>>>>  - Co-Founder @ http://www.jbug.com.ar
>>>>
>>>>  - Salatino "Salaboy" Mauricio -
>>>>
>>>>
>>>> _______________________________________________
>>>> rules-users mailing list
>>>> rules-users at lists.jboss.org
>>>> https://lists.jboss.org/mailman/listinfo/rules-users
>>>>
>>>>
>>> --
>>> Isaac Pereira
>>>
>>>
>>> _______________________________________________
>>> rules-users mailing list
>>> rules-users at lists.jboss.org
>>> https://lists.jboss.org/mailman/listinfo/rules-users
>>>
>>>
>>
>>
>> --
>>  - CTO @ http://www.plugtree.com
>>  - MyJourney @ http://salaboy.wordpress.com
>> - Co-Founder @ http://www.jugargentina.org
>>  - Co-Founder @ http://www.jbug.com.ar
>>
>>  - Salatino "Salaboy" Mauricio -
>>
>>
>> _______________________________________________
>> rules-users mailing list
>> rules-users at lists.jboss.org
>> https://lists.jboss.org/mailman/listinfo/rules-users
>>
>>
> --
> Isaac Pereira
>
>
> _______________________________________________
> rules-users mailing list
> rules-users at lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
>
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