[rules-users] Accumulate a on event combinations

[Wolfgang Laun]

On 03/10/2012, gboro54 <gboro54 at gmail.com> wrote:
> Doesn't accumulate have a count by itself? I guess I am trying to figure
> out
> if it is possible to do something like:

Possibly, but that's not what you were asking for in your first post.

>
> rule "Raise alarm"
> when
>    Number( intValue> 5) from
>     accumulate(  $a:EventA( $id:id )
>                       EventB(eventAId=$id, this after [0s,5s] $a);
>                 count($a) )
> then
>     //do stuff
> end
>
>
> laune wrote
>> An accumulate with explicitly coded init/action/result lets you
>> accumulate
>> into
>> a custom object that provides exactly the information you want: just
>> that there is a matching number of As and Bs, the counts for As and
>> Bs, two lists with As and Bs - anything.
>>
>> See the Expert doc - there's an example for this sort of thing.
>>
>> -W
>>
>> On 03/10/2012, gboro54 &lt;
>
>> gboro54@
>
>> &gt; wrote:
>>> We are using expert and fusion to monitor connection events in our
>>> system.
>>> We
>>> would like to know the most efficient way to know that X number pair of
>>> events have happened in a certain example(i.e eventA and eventB occurred
>>> 4
>>> times each in the 5 seconds). What is the most efficient way to do this?
>>>
>>> I
>>> don't believe an accumulate would allow a combination of objects but I
>>> may
>>> be wrong. Perhaps a live query invoked by a rule?
>>>
>>>
>>>
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