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<p class=MsoNormal><span lang=EN-US>Hi,<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><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.<o:p></o:p></span></p>
<p class=MsoNormal><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:<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span lang=EN-US
style='font-size:10.0pt;font-family:"Courier New";color:black'>$error :
RouterErrorEvent ( $name : routerName ) </span><b><span lang=EN-US
style='font-size:10.0pt;font-family:"Courier New";color:#960000'>from</span></b><span
lang=EN-US style='font-size:10.0pt;font-family:"Courier New";color:black'>
entry-point </span><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New";
color:green'>"abc"</span><span lang=EN-US style='font-size:10.0pt;
font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New";
color:black'>not ($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=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><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. <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>If it were two different events something
like in example 2.19 would work:<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'>$error1
: ErrorOneEvent( $id : id ) <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'>not
($error2 : ErrorTwoEvent( id == $id, this coincides $error1 ))<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>I’m kinda sure I’m missing
something pretty “easy” here… or is this approach completely
wrong?<o:p></o:p></span></p>
<p class=MsoNormal><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!<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Thanks in advance!<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Georg</span><o:p></o:p></p>
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