[rules-users] agenda-groups

[gboro54]

The point is to be able to stream a large volume of messages into the rule
session without tying up that thread. In addition I don't want there to be
millions of messages in a session at a given point, thus the point of
executing the rules on a different thread while inserting facts from
another. 


laune wrote
> 
> What about executing insert(s) followed by fireAllRules() in one thread?
> -W
> 
> On 08/05/2012, gboro54 <gboro54@> wrote:
>> What do you recommend?  firUntilHalt seems to get locked out after
>> sometime... I am running out of ideas and have posted this question
>> before.
>> I believe we talked about periodically using fireAllRules on a separate
>> thread.
>>
>>
>> laune wrote
>>>
>>> Periodically calling fireAllRules() in a thread running parallel to the
>>> one(s)
>>> doing insertions doesn't make sense to me.
>>>
>>> -W
>>>
>>> On 08/05/2012, gboro54 <gboro54@> wrote:
>>>> I am not currently using agenda-groups. I believe my issue right now is
>>>> one
>>>> of thread safety. A little background: I currently have a thread
>>>> pulling
>>>> messages from a database running on the main thread. In several other
>>>> threads, I have drools session being fired every so often. It appears
>>>> that
>>>> there may be a some type of deadlock caused by invoking fireAllRules on
>>>> one
>>>> thread, while another is trying to insert. I am working through right
>>>> now
>>>> to
>>>> debug the issue. Has anyone else experienced this issue?
>>>>
>>>>
>>>> Vincent Legendre wrote
>>>>>
>>>>>> I am having an issue where I have a catch all
>>>>>> retraction rule setup as the lowest salience.
>>>>>
>>>>> Not sure to understand that (note that I am not english native ...)
>>>>>
>>>>>> I see activations created for the facts but they are never fired. 
>>>>>> Any
>>>>>> thoughts on why this may happen?
>>>>>
>>>>> Send some rules. Activations never fired is just too vague to have a
>>>>> single answer.
>>>>> If you use agenda groups, may be that the group is simply not on focus
>>>>> ...
>>>>>
>>>>> Add a first rule that set the focus, or set auto-focus for all your
>>>>> "low
>>>>> salience" rules, or don't set agenda group for them (their group will
>>>>> be
>>>>> the MAIN group).
>>>>>
>>>>>> The session is run on a separate thread with fireAllRules called
>>>>>> every
>>>>>> 1/2
>>>>>> second. I have tried syncronizing inserts on the session so that
>>>>>> thread
>>>>>> would not be in the middle of firing when new facts come in but that
>>>>>> does
>>>>>> not seem to do anything....
>>>>>
>>>>> Why not using fireUntilHalt instead ?
>>>>> Run your session.fireUntilHalt in a separate thread, and insert things
>>>>> in
>>>>> that session.
>>>>> insert (or update or retract) will wake up the session.
>>>>>
>>>>> Of course, one day, you have to call halt() on your session to get
>>>>> out.
>>>>> _______________________________________________
>>>>> rules-users mailing list
>>>>> rules-users at .jboss
>>>>> https://lists.jboss.org/mailman/listinfo/rules-users
>>>>>
>>>>
>>>>
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>>
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