[rules-users] rules priority

[Leonardo Gomes]

I think that you can explore the options already suggested:

- guard condition
- agenda group

and also:

- no-loop, if you happen to have any rule looping around itself
- drools.halt( ) in the consequence, if you want to completely halt the
execution when a given rule matches.

Cheers,
Leo.



2010/9/21 Esteban Aliverti <esteban.aliverti at gmail.com>

> If what you need is to fire just a subset of all the activated rules, you
> could use agenda-group attribute instead of activation-group.
>
> Best,
>
> XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
>
> Esteban Aliverti
> - Developer @ http://www.plugtree.com
> - Blog @ http://ilesteban.wordpress.com
>
>
> 2010/9/20 Michael Anstis <michael.anstis at gmail.com>
>
> You could consider using a "guard condition" e.g.
>>
>> rule 1
>>     when
>>         not Solved()
>>         <Your rule 1>
>>     then
>>         insert new Solved();
>>         ....
>>     end
>>
>> rule 2
>>     when
>>         not Solved()
>>         <Your rule 2>
>>     then
>>         insert new Solved();
>>         ....
>>     end
>>
>>
>> If you only want one rule per "group" then have the grouping as a member
>> of the guard condition.
>>
>> I'm not sure if you can cause the processing of activations to abort.
>>
>> 2010/9/20 Nadav Hashimshony <nadavh at gmail.com>
>>
>>>  Hi
>>>
>>> Im using drools 5 with Guvnor 5
>>> i set up 30 Technical rules and build a package to be used by my
>>> drools-sample application.
>>>
>>> my probelm is as followed, some rule may conflict, i want to set up a
>>> rule order and if one rule is caught then i want the drools to stop and not
>>> continue to try other rules.
>>>
>>> ive use salience but it hasnt really done the trick.
>>>
>>> example:
>>> my rules:
>>>
>>> rule "Rule-01"
>>> salience 100
>>> activation-group "group1"
>>> ...
>>> System.Out.Println("caught rule 1")
>>> ....
>>>
>>> rule "Rule-02"
>>> salience 100
>>> activation-group "group1"
>>> ...
>>> System.Out.Println("caught rule 2")
>>> ....
>>>
>>> rule "Rule-03"
>>> activation-group "group2"
>>> ...
>>> System.Out.Println("caught rule 3")
>>> ....
>>>
>>>
>>> rule "Rule-04"
>>> activation-group "group2"
>>> ...
>>> System.Out.Println("caught rule 4")
>>> ....
>>>
>>>
>>> actual result: lets say all 4 rules are cuaght, what i will see is as
>>> followed
>>>
>>> ACTIVATION CREATED rule:Rule-01 activationId:Rule-01 [1] declarations:
>>> BEFORE ACTIVATION FIRED
>>> caught rule 1
>>> ACTIVATION CANCELLED rule:Rule-2
>>>
>>> ACTIVATION CREATED rule:Rule-03 activationId:Rule-01 [1] declarations:
>>> BEFORE ACTIVATION FIRED
>>> caught rule 3
>>> ACTIVATION CANCELLED rule:Rule-3
>>>
>>>
>>> only one rule from each activation-group will be fired, and the first
>>> group with the higher salience will fire first.
>>>
>>> what i would like is it one rule was caught to stop trying? is it
>>> possible?
>>>
>>> Thanks, Nadav.
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> _______________________________________________
>>> rules-users mailing list
>>> rules-users at lists.jboss.org
>>> https://lists.jboss.org/mailman/listinfo/rules-users
>>>
>>>
>>
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