Hello,<div>Hello,</div><div><br></div><div>I just tried this rule, but it doesn't seem to work as expected. </div><div>What I have now is every time I have an EventA received then a pattern is reported matched no matter whether any of the other constrains is met.</div>
<div><br></div><div>Any ideas?</div><div><br></div><div>Best Regards,</div><div>Kevin Zhao<br><br><div class="gmail_quote">2010/10/26 Michael Anstis <span dir="ltr"><<a href="mailto:michael.anstis@gmail.com">michael.anstis@gmail.com</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">You could try this too; if you don't want lots of new attributes for your model:-<div class="im"><br><br>rule "three A"<br>
when<br> $a1: EventA( $index : index )<br>
$a2: EventA( index == $index )<br> $a3: EventA( index == $index )</div><div> not PatternConsumer( name == 'AAA', events contain $a1 || contais $a2 || contains $a3)<div class="im"><br>
not EventB( this after[0ms] $a1 && before[0ms] $a3, index == $index )<br>
then<br> // ... match<br></div> PatternConsumer pc = new PatternConsumer("AAA", $a1, $a2, $a3 );<br> insert(pc);<br></div>end<div><div></div><div class="h5"><br><br><br><div class="gmail_quote">2010/10/25 Wolfgang Laun <span dir="ltr"><<a href="mailto:wolfgang.laun@gmail.com" target="_blank">wolfgang.laun@gmail.com</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">Giving those other rules a higher salience is one way, but I think<br>it is better to add a boolean field "usedForAAA" to class EventA. <br>
<br>rule "three A"<br>when<br> $a1: EventA( $index : index, usedForAAA == false )<br>
$a2: EventA( index == $index, usedForAAA == false )<br> $a3: EventA( index == $index, usedForAAA == false )<div><br>
not EventB( this after[0ms] $a1 && before[0ms] $a3, index == $index )<br>
then<br> // ... match<br></div> modify( $a1 ){ setUsedForAAA( true ) }<br> modify( $a2 ){ setUsedForAAA( true ) } <br> modify( $a3 ){ setUsedForAAA( true ) }<div><div></div><div><br>end<br><br>-W<br><br><br>
<div class="gmail_quote">2010/10/25 ΥΤΩ©Ω© <span dir="ltr"><<a href="mailto:kevin223@gmail.com" target="_blank">kevin223@gmail.com</a>></span><br>
<blockquote class="gmail_quote" style="border-left:1px solid rgb(204, 204, 204);margin:0pt 0pt 0pt 0.8ex;padding-left:1ex">Thanks Wolfgang,<div><br></div><div>It now starts to make sense to me. However, is it possible that I don't retract those matched eventA? All those events might be used to evaluate against other rules.</div>
<div><br></div>
<div>Thanks again,</div><div>Kevin Zhao</div><div><br><div class="gmail_quote">2010/10/25 Wolfgang Laun <span dir="ltr"><<a href="mailto:wolfgang.laun@gmail.com" target="_blank">wolfgang.laun@gmail.com</a>></span><br>
<blockquote class="gmail_quote" style="border-left:1px solid rgb(204, 204, 204);margin:0pt 0pt 0pt 0.8ex;padding-left:1ex">
I assume you are using Fusion, using a session clock so that temporal operators are available.<br><br>rule "three A"<br>when<br> $a1: EventA( $index : index )<br> $a2: EventA( index == $index )<br> $a3: EventA( index == $index )<br>
not EventB( this after[0ms] $a1 && before[0ms] $a3, index == $index )<br>
then<br> // ... match<br> retract( $a1 );<br> retract( $a2 );<br> retract( $a3 );<br>end<br><br>-W<br><br><div class="gmail_quote">2010/10/25 ΥΤΩ©Ω© <span dir="ltr"><<a href="mailto:kevin223@gmail.com" target="_blank">kevin223@gmail.com</a>></span><br>
<blockquote class="gmail_quote" style="border-left:1px solid rgb(204, 204, 204);margin:0pt 0pt 0pt 0.8ex;padding-left:1ex"><div><div></div><div>Hello,<div><br></div><div>I'm still quite new to the drools stuffs just getting the examples running. I'm sorry if my question is too basic.</div>
<div>I have a system that will continuously to receive events sent from some other system. Basically I have two types of events, eventA and eventB. </div>
<div>Both eventA and eventB have two properties, index and timestamp.</div><div><br></div><div>What I want is to capture a pattern to meet the following conditions</div><div><br></div><div>1. every 3 consecutive eventsA without any eventB in between having a same index value ordering by their timestamp. </div>
<div><br></div><div>2. all events in a matched pattern will have the same value of property index.</div><div><br></div><div>3. if a pattern is matched, any of the events in this pattern should not be used again for a new matching.</div>
<div><br></div><div>there are some examples below, the number after a colon stands for the value of its index number and assume those events are already ordered by their timestamp.</div><div><br></div><div>eventB:2 eventA:1 eventA:1 eventA:1 eventB:3 --------- one successful match, we have three eventA with same index value 1 in a row</div>
<div><br></div><div>eventB:2 eventA:1 eventA:1 eventB:1 eventA:1 --------- no match because there's an eventB in between</div><div><br></div><div>eventB:2 eventA:1 eventA:1 eventB:2 eventA:1 --------- one successful match because the in-between eventB has a different index value</div>
<div><br></div><div>eventA:1 eventA:1 eventA:1 eventA:1 eventA:1 --------- only one match, because once matched, the events can not be used for a second match again.</div><div><br></div><div><br></div><div>
I just don't know how to write a rule like this. Is there anyone who can shed some lights on?</div><div><br></div><div>Best Regards,</div><div>Kevin</div><div><br></div><div><br></div>
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