[rules-users] The update function inside a rule

[FrankVhh]

I'm sorry, that didn't make any sense. An un-updated internal enddate would
indeed cause the LHS condition to remain true, and the timer will cause it
to fire each second.

My bad...


FrankVhh wrote:
> 
> Hi Marc,
> 
> Your rules do not immediately reveal anything remarkable to me, so I do
> not have an explanation or solution just yet.
> 
> Here is what I would do to narrow down on the problem:
> Add an output in your rules that print the internal end date and the
> current date in each RHS of the rules.
> 
> It is unlikely that the WM is not updated at all, that would cause
> internalEndDate to remain unchanged and rules wouldn't be fired anymore.
> 
> Regards,
> Frank
> 
> 
> Marc Strabin wrote:
>> 
>> Hello,
>> I've 2 rules which should be similar but the result is different and I
>> can't
>> understand why :
>> 
>> I insert an object Message() into drools with the following rule :
>> 
>> rule "rule_a"
>> timer (int:1s 1s)
>> when
>> SimpleClock ( d : dateInMillisec != 0 )  // SimpleClock give the current
>> time (set by a java timer and an update)
>> m : Message ( internalEndDate < d )
>> then
>>  System.out.println( "rule a");
>> m.setInternalEndDate (d + 10000);
>> * retract (m);*
>> * insert (m);*
>> end
>> 
>> 
>> > the result is fine : a message every 10.
>> 
>> If I replace the rule_a by the rule_b : (because an update should be
>> better
>> than an retract/insert I guess)
>> 
>> rule "rule_b"
>> timer (int:1s 1s)
>> when
>> SimpleClock ( d : dateInMillisec != 0 )  // Simple slock give the current
>> time (set by a java timer and an update)
>> m : Message ( internalEndDate < d )
>> then
>>  System.out.println( "rule b");
>> m.setInternalEndDate (d + 10000);
>> * update (m);*
>> end
>> 
>> 
>> > the result is bad : a message every 1 second.
>> 
>> It act as if the attibute message.internalEndDate wasn't updated in the
>> drools engine. Could someone explain me if/why this behaviour is normal ?
>> Thanks in advance
>> 
>> Marc
>> 
>> _______________________________________________
>> rules-users mailing list
>> rules-users at lists.jboss.org
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>> 
> 


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