[rules-users] agenda-groups

[gboro54]

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.
>>> _______________________________________________
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>>>
>>
>>
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