[rules-users] programmatic manipulation of 4.0 salience?

[Scott Reed]

I guess I could add my own salience field to all my working memory objects, but it seems like 
overkill when I don't want to change the salience during a run. I just want to be able to set it as 
a constant salience before the rules are loaded and run.

Yuri de Wit's message received 8/17/2007 6:41 AM:
> Scott,
> 
> not sure if it fits your problem, but you may also consider using
> dynamic saliences. Yesterday I was able to convert 3.x rules to use it
> worked very well.
> 
> In my case, I have facts of different sizes (some are collections of
> other facts, some are individual facts) and in some rules I need to
> find first MxN pairs (collection facts on both sides), then Mx1 or 1xN
> pairs, and only then 1x1 pairs. In other rules I need to find first
> 1x1 pairs, then Mx1 or 1xN pairs and only then MxN.
> 
> Instead of writting a custom ConflictResolver, what I did was to use
> one dynamic salience:
> 
> salience (1000 / (c.size * t.size))
> 
> for finding smallest pairs first, and
> 
> salience (-1000 / (c.size * t.size)
> 
> for finding the largest pairs first.
> 
> The 1000 is to get around the fact that saliences are integers and not
> float/double (afaik)
> 
> Hope it helps,
> 
> -- yuri
> 
> 
> On 8/17/07, Manjax23 <manjunatha.n at coreobjects.com> wrote:
>> Salience salience = new SalienceInteger( Integer.parseInt( salienceText ) );
>> rule.setSalience( salience );
>>
>> Cheers,
>> manjax23
>>
>>
>> Scott Reed-4 wrote:
>>> My 3.1 app has a mechanism that allowed the user to change the salience of
>>> some rules before running
>>> them, before loading up WorkingMemory. This was quite simple,
>>> rule.getSalience() returned a rule's
>>> int salience value and rule.setSalience(int) set it. Now in 4.0 I see
>>> salience is no longer just an
>>> int, but a Salience object with a simple constructor and complicated
>>> getValue(Tuple,WorkingMemory)
>>> method to access the int value.
>>>
>>> It appears to be still easy to set the salience of a rule:
>>> rule.setSalience( new
>>> SalienceInteger(int)) but getting the int salience from a Salience object
>>> seems to have been removed
>>> from joe-blow coder's reach.
>>>
>>> I would be very grateful if someone would provide me with an example that
>>> gets the int salience
>>> associated with a rule. I have no idea where or why I need to get the
>>> Tuple and WorkingMemory. Can I
>>> just pass nulls in for those two arguments?
>>>
>>> Thanks,
>>>    Scott
>>> _______________________________________________
>>> rules-users mailing list
>>> rules-users at lists.jboss.org
>>> https://lists.jboss.org/mailman/listinfo/rules-users
>>>
>>>
>> --
>> View this message in context: http://www.nabble.com/programmatic-manipulation-of-4.0-salience--tf4283735.html#a12194345
>> Sent from the drools - user mailing list archive at Nabble.com.
>>
>> _______________________________________________
>> rules-users mailing list
>> rules-users at lists.jboss.org
>> https://lists.jboss.org/mailman/listinfo/rules-users
>>
> _______________________________________________
> rules-users mailing list
> rules-users at lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>