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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D">You can solve this if you are able to put an ordering on the Things.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D">Eg you could have<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D">$that : Thing(...)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D">$other : Thing(this != $that, name > $that.name)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D">This assumes that names are unique.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D">Thomas<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:
"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;
font-family:"Tahoma","sans-serif""> rules-users-bounces@lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org]
<b>On Behalf Of </b>Georg Maier<br>
<b>Sent:</b> 26 May 2010 12:27<br>
<b>To:</b> Rules Users List<br>
<b>Subject:</b> Re: [rules-users] Detecting two instances of the same eventwithFusion Rules<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="DE" style="font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D">Hi,
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="DE" style="font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D">thanks for the reply. You are right, it’s just not working the otherway round, if there would be no “not”<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D">$that : Thing(..)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D">$other : Thing ( this != $that , …)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D">would match always twice. For example, if there were two “Thing”’s A and B it would match for the combination AB as well as BA… I know this was
actually not my question, but I guess it was the reason I got confused </span><span lang="EN-US" style="font-size:10.0pt;font-family:Wingdings;
color:#1F497D">J</span><span lang="EN-US" style="font-size:10.0pt;font-family:
"Arial","sans-serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D">Thanks again!<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:
"Tahoma","sans-serif"">Von:</span></b><span lang="EN-US" style="font-size:10.0pt;
font-family:"Tahoma","sans-serif""> rules-users-bounces@lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org]
<b>Im Auftrag von </b>W</span><span lang="DE" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">olfgang Laun<br>
<b>Gesendet:</b> Mittwoch, 26. Mai 2010 10:01<br>
<b>An:</b> Rules Users List<br>
<b>Betreff:</b> Re: [rules-users] Detecting two instances of the same event withFusion Rules<o:p></o:p></span></p>
</div>
<p class="MsoNormal"><span lang="DE"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span lang="DE">But <br>
<br>
$that : Thing(...)<br>
Thing( this != $that,...)<br>
<br>
is the standard way of ensuring that a pattern matches two distinct objects of the same class, and there is no reason why you shouldn't be able to use it with not as well:<br>
<br>
$that : Thing(...)<br>
not ( Thing( this != $that,... ) ) <br>
<br>
"Given one Thing (with constraints...) and *not* having any *other* Thing (with constraints...), then..."<br>
<br>
-W<o:p></o:p></span></p>
<div>
<p class="MsoNormal"><span lang="DE">2010/5/26 Georg Maier <<a href="mailto:Georg.Maier@cjt.de">Georg.Maier@cjt.de</a>><o:p></o:p></span></p>
<div>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">Hi,</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US"> </span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">I’m new to Drools and currently trying to implement some examples using CEP / Fusion. I got stuck on a problem to which I can’t find any solution in the online
documentation, so I’m hoping for your help.</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">I’m trying to write a rule, which is activated whenever a certain event occurs and no event of the same type occurred in the e.g. last 5 minutes (or just at the
same time). I know how to do it if these are events of different types, but I can’t find any way for events of the same type. What I tried is something like that:</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US"> </span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New";color:black">$error : RouterErrorEvent ( $name : routerName )
</span><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New";color:#960000">from</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New";color:black"> entry-point
</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New";
color:green">"abc"</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New";color:black">not ($otherError : RouterErrorEvent ( (</span><b><span lang="EN-US" style="font-size:
10.0pt;font-family:"Courier New";color:#960000">this</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New";color:black">
coincides $error) && (routerName == $name) ) </span><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New";color:#960000">from</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New";color:black"> entry-point
</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New";
color:green">"abc")</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US"> </span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">First of all there’s the problem, that $error and $otherError will be the same instance if a “RouterEventError” has been inserted from the “abc” entry point.
Adding a (this != $error) to the second, ($otherError) obviously is no solution to that as well.
</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">If it were two different events something like in example 2.19 would work:</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US"> </span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New"">$error1 : ErrorOneEvent( $id : id )
</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New"">not ($error2 : ErrorTwoEvent( id == $id, this coincides $error1 ))</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US"> </span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">I’m kinda sure I’m missing something pretty “easy” here… or is this approach completely wrong?</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">As I’m aware of the fact that I couldn’t be more of a newbie
</span><span lang="EN-US" style="font-family:Wingdings">J</span><span lang="EN-US"> I would appreciate any suggestions for nice tutorials or further reading as well!</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US"> </span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">Thanks in advance!</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US"> </span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="color:#888888">Georg</span><span lang="DE" style="color:#888888"><o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span lang="DE"><br>
_______________________________________________<br>
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<a href="mailto:rules-users@lists.jboss.org">rules-users@lists.jboss.org</a><br>
<a href="https://lists.jboss.org/mailman/listinfo/rules-users" target="_blank">https://lists.jboss.org/mailman/listinfo/rules-users</a><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="DE"><o:p> </o:p></span></p>
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