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The events contain a field with a source time. Refering this time
the events can be compared. It has to be done this way, because
unlike the source times the receive times aren't synchron.<br>
<br>
In my case, the testing for missing elements is more complex than:<br>
$a: EventA()<br>
not EventB(this after[1d] $a)<br>
Because there may be the events A, C, D, E and F and it should be
noticed, that there's B missing between A and C. But I have no hint
about that, because the events are neither numbered nor do I know
there should be a event B with a time A.time+Xseconds.<br>
<br>
<br>
<blockquote
cite="mid:AANLkTinYtnGsTLtdyBjCrWJ46SbmetHxPoxVcN+uv=pW@mail.gmail.com"
type="cite">You can use it without time.. but each time that you
have an EventA and not an EventB the will be activated<br>
<br>
<div class="gmail_quote">2010/10/22 Tina Vießmann <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:tviessmann@stud.hs-bremen.de">tviessmann@stud.hs-bremen.de</a>></span><br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt
0.8ex; border-left: 1px solid rgb(204, 204, 204);
padding-left: 1ex;">
<div bgcolor="#ffffff" text="#000000"> Yeah, normally I would
solve it that way. But you're using a time (1d) which I
unfortunately don't know off in my scenario. <br>
<br>
I'm afraid that there will be no other solution than that I
have to use a time...<br>
<br>
Thanks anyway :)
<div>
<div class="h5"><br>
<br>
<br>
<blockquote type="cite">Sounds that you can use the Not
Conditional Element for that right?
<div>something like</div>
<div><br>
</div>
<div>$a: EventA()</div>
<div>not EventB(this after[1d] $a)</div>
<div><br>
</div>
<div><br>
<br>
<div class="gmail_quote"> On Fri, Oct 22, 2010 at
5:49 PM, Tina Vießmann <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:tviessmann@stud.hs-bremen.de"
target="_blank">tviessmann@stud.hs-bremen.de</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt
0pt 0pt 0.8ex; border-left: 1px solid rgb(204,
204, 204); padding-left: 1ex;"> Hi,<br>
<br>
I'm working on a use case where I want to know
if 20 events with a<br>
specific value are contained in at maximum the
last 150 events. So far I<br>
know what have to do. ;-)<br>
My problem is that as extension to my condition,
the rule shall also<br>
trigger if one ore more events are missing. But
I don't know the time<br>
interval with which the events arrive, so that I
don't know when a new<br>
event should arrive and by implication I don't
know about the absence of<br>
an event.<br>
<br>
In our environment events arrive in "counts" and
not in a specific time<br>
interval as e.g. ever 1 second. So we talk
about the last two or 150<br>
counts if we talk about the last two ore 150
data packages received.<br>
Yes, behind a count always is a time interval,
but only the data source<br>
knows about the time interval. My recipient
doesn't<br>
Also the data of a data package is inserted in
the working memory<br>
independently, so that I have e.g. 10 data
events instead of a single<br>
package event.<br>
(Now that you know that, my first sentence would
be correctly: I want to<br>
know if 20 counts of the max. last 150 counts
have contained a specific<br>
event.)<br>
<br>
If my explanation (or my attempt to explain) is
difficult to understand,<br>
please ask me what you want to know.<br>
<br>
I would be very happy about any ideas.<br>
<br>
Thank you.<br>
Tina<br>
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