[rules-users] What's wrong with this rule

[赵侃侃]

To be honest, I don't quite understand the rules you wrote. Let me explain
this a little bit with a real world scenario.
Assume this is an on-line game that EventB indicates a 'kill' event that a
player is losing its character who might be killed by some other player.
The property index points to the player who owns this character. What I'm
looking for here is to find out when a player's character survives in 2
minutes. The number of players in a game is at least 2 but can be up to any
number.

Best Regards,
Kevin Zhao

2010/10/28 Wolfgang Laun <wolfgang.laun at gmail.com>

>
>
> 2010/10/28 赵侃侃 <kevin223 at gmail.com>
>
>> Hello Wolfgang,
>>
>> Index is just like the index in an array. the value can be any from 0 to
>> the array length.
>> for the previous example, the length is 1 so index can be either 0 or 1.
>> but in the real case, the length can be an arbitrary number.
>>
>> another question, there are 2 rules here, do both of them have to be
>> applied?
>>
>
> One creates and inserts the PatternConsumer which blocks repeated usage of
> the pair of EventB facts that have been successfully paired. Otherwise a
> sequence EventB:0, EventB:1, EventB:2 would fire 2 times.
>
> If the positive condition is more complex, e.g., you need *all* index
> values 0,...,L-1 within 2m, then other conditions will be required (and
> that's what I meant with "more precisesly"). If any pair a,b from [0..L-1]
> will do, then the modified version (!=) should be OK.
>
> -W
>
>
>
>>
>> Best Regards,
>> Kevin Zhao
>>
>> 2010/10/28 Wolfgang Laun <wolfgang.laun at gmail.com>
>>
>> Kindly state your requirements precisely.
>>>
>>> Perhaps
>>>    not ( EventB ( index != $index,... )
>>> is what you need.
>>> -W
>>>
>>> 2010/10/28 赵侃侃 <kevin223 at gmail.com>
>>>
>>> I haven't tested this rule, but what about the case that property index
>>>> would have arbitrary number of possible values?
>>>>
>>>> 2010/10/27 Wolfgang Laun <wolfgang.laun at gmail.com>
>>>>
>>>>> Omitting the Entry  Points:
>>>>>
>>>>> rule "B-0-1-not OK"
>>>>> when
>>>>>    $b : EventB( $index: index )
>>>>>    not ( PatternConsumer( id == "B01", events contains $b ) )
>>>>>    not ( EventB( index == (1 - $index), this after[0s,2m] $b ) )
>>>>> then
>>>>>    System.out.println( "B:" + $index + ", but no B:" + (1-$index) );
>>>>> end
>>>>>
>>>>> rule "B-0-1"
>>>>> when
>>>>>    $b1 : EventB( $index: index )
>>>>>    $b2 : EventB( index == (1 - $index), this after[0s,2m] $b1 )
>>>>> then
>>>>>    insert( new PatternConsumer( "B01", $b1, $b2 ) );
>>>>>    System.out.println( "B:" + $index + "+B:" + (1-$index) );
>>>>> end
>>>>>
>>>>> -W
>>>>>
>>>>> 2010/10/27 赵侃侃 <kevin223 at gmail.com>:
>>>>> > Hello,
>>>>> > With the help from the community I managed to get my first rule
>>>>> working, and
>>>>> > I'm trying to write my second rule on my own but it just doesn't seem
>>>>> to
>>>>> > work correctly.
>>>>> > Here is the scenario, what I want is to identify a pattern that
>>>>> there's no
>>>>> > EventB coming in within 2 minutes with a particular index value.
>>>>> > For example, EventB would have a property named index and assume the
>>>>> value
>>>>> > of index would be either 0 or 1.
>>>>> > Before firing the rules, I would manually insert facts of
>>>>> possibleIndex with
>>>>> > value 0 and 1 into the workingMemory.
>>>>> > Within 2 minutes, if there only comes one EventB with index valued 0
>>>>> then
>>>>> > the system should report no EventB coming in with index value 1 in
>>>>> last 2
>>>>> > minutes.
>>>>> > Vice versa, in the case of only coming one EventB with index valued 1
>>>>> then
>>>>> > the system should report no EventB coming in with index value 0 in
>>>>> last 2
>>>>> > minutes.
>>>>> > If within 2 minutes, there comes 2 EventB with both value 0 and 1
>>>>> then
>>>>> > nothing should report.
>>>>> > Here is what I wrote, but it doesn't seem to work correctly.
>>>>> > I used a timer to fire this rule every 10 seconds because I don't
>>>>> think the
>>>>> > rule would run automatically if I don't add that. (not too sure
>>>>> though)
>>>>> > rule "no B in 2 minutes"
>>>>> > timer (0 10s)
>>>>> > when
>>>>> > possibleIndex( $index : index ) from entry-point "Event stream"
>>>>> > $p : PatternConsumer ( name == 'no B' && index == $index )
>>>>> > not ( EventB( index == $index && this after[0ms,2m] $p) over
>>>>> window:time(2m)
>>>>> > from entry-point "Event stream" )
>>>>> > then
>>>>> > PatternConsumer pc = new PatternConsumer( "no B", $index );
>>>>> > insert(pc);
>>>>> > System.out.println("no B in 2 minutes " + $index);
>>>>> > end
>>>>> > Best Regards,
>>>>> > Kevin Zhao
>>>>> > _______________________________________________
>>>>> > rules-users mailing list
>>>>> > rules-users at lists.jboss.org
>>>>> > https://lists.jboss.org/mailman/listinfo/rules-users
>>>>> >
>>>>> >
>>>>>
>>>>> _______________________________________________
>>>>> rules-users mailing list
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>>>>>
>>>>
>>>>
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