[rules-users] Combination of conditions doesn't work

[FrankVhh]

Yes, thanks Manstis. I am already informing myself as we speak :-).


manstis wrote:
> 
> @FrankVhh
> 
> Entry-points are used with CEP; you'll find details in the Fusion
> documetation.
> 
> With kind regards,
> 
> Mike
> 
> On 7 April 2011 15:21, FrankVhh <frank.vanhoenshoven at agserv.eu>
> wrote:
> 
>> Hi Sariman,
>>
>> The trick with "from entry-point", is quite unfamiliar to me. There might
>> be
>> some problem with that, but I cannot tell by looking at it.
>>
>> However, there are a few problems with the rules that you have printed
>> out
>> for us.
>>
>> 1) The way I understand it, they do not do what they should be doing. You
>> said you do NOT want an action when all sensors evaluate to true. In your
>> case, you are evaluateing whether all sensors are false. This is pretty
>> useless if you already have a rule which evaluates the existence of at
>> least
>> 1 "true" sensor. The way I would put this is like this:
>>
>> rule "Myrule"
>>        when
>>                #conditions
>>                sensorEvent1: SensorEvent(booleanValue == true)
>>                exists( SensorEvent(booleanValue == false) )
>>        then
>>                #actions
>> end
>>
>> 2) There are some errors in your rule. No idea whether this is a
>> copy/paste
>> or a read/type, so I will just point them out.
>>    - ";" is usually not needed in a LHS, I am not familiar with the from
>> entry-point syntax, but I assume it wouldn't be needed
>>    - There is a ")" in excess in one of your conditions
>>
>> 3) I don't think it makes sense to put your rules as you did in the
>> second
>> example. Even if you are trying to examine whether those three sensors
>> are
>> false.
>>
>> On a personal note: what does from entry-point do? I must have overlooked
>> it
>> in the documentation.
>>
>> Regards,
>> Frank
>>
>>
>> sariman wrote:
>> >
>> > To keep it short, I have three sensors providing me some values every x
>> > seconds. I am running an algorithm over those values and getting at the
>> > end a single value for each sensor. Next I check if this value is
>> > greater/less than a threshold value and creating an object and setting
>> its
>> > booelan value to true/false. The last part looks like this:
>> >
>> > SensorEvent sensorEvent = new SensorEvent ();
>> >               sensorEvent.setBoolean(booleanValue);
>> >               sensorEvent.setSensorID(sensorID);
>> >
>> > I want to do some actions if one of the sensors has "true" and this
>> works.
>> > But I want no action if all sensors have "true". And this part doens't
>> > work. If I only check one of the sensors if it is "false" it is ok but
>> the
>> > combination doesn't work. It means this case seems naver to happen. No
>> > exception or error but no system print either. Here is the code snippet
>> > from my rules file:
>> >
>> > declare SensorEvent
>> >       @role(event)
>> > end
>> >
>> >
>> > rule "All false"
>> >
>> >       when
>> >               #conditions
>> >               sensorEvent1    : SensorEvent(sensorID == 1 ,
>> booleanValue
>> == false)    from
>> > entry-point "Default";
>> >               sensorEvent2    : SensorEvent(sensorID == 5 ,
>> booleanValue
>> == false) )  from
>> > entry-point "Default";
>> >               sensorEvent3    : SensorEvent(sensorID == 6 ,
>> booleanValue
>> == false)    from
>> > entry-point "Default";
>> >
>> >       then
>> >               #actions
>> >               System.out.println(" All false!! -> ");
>> >
>> > end
>> >
>> >
>> > I run the engine in stream mode and every single value (or object) is
>> > being inserted after I receieved the value. I also tried this variant
>> but
>> > it didn't work either:
>> >
>> > rule "All false"
>> >
>> >       when
>> >               #conditions
>> >               sensorEvent1    : SensorEvent(sensorID == 1 )   from
>> entry-point "Default";
>> >               sensorEvent2    : SensorEvent(sensorID == 5 )   from
>> entry-point "Default";
>> >               sensorEvent3    : SensorEvent(sensorID == 6 ,
>> booleanValue
>> == false &&
>> > sensorEvent1.booleanValue == false && sensorEvent2.booleanValue ==
>> false))
>> > from entry-point "Default";
>> >
>> >       then
>> >               #actions
>> >               System.out.println(" All false!! -> ");
>> >
>> > end
>> >
>> > Any suggestions?
>> >
>>
>>
>> --
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