3:36 a.m.
2010/10/28 赵侃侃 <kevin223(a)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(a)gmail.com>
Kindly state your requirements precisely.
>
> Perhaps
> not ( EventB ( index != $index,... )
> is what you need.
> -W
>
> 2010/10/28 赵侃侃 <kevin223(a)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(a)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(a)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(a)lists.jboss.org
>>> > https://lists.jboss.org/mailman/listinfo/rules-users
>>> >
>>> >
>>>
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>>>
>>
>>
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