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<p class=MsoNormal><font size=2 color=blue face=Verdana><span lang=EN-GB
style='font-size:10.0pt;font-family:Verdana;color:blue'>I forgot to give the
priority of the booking rules in my example, here it is : <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Verdana><span lang=EN-GB
style='font-size:10.0pt;font-family:Verdana;color:blue'>- BR1 : low priority (1<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Verdana><span lang=EN-GB
style='font-size:10.0pt;font-family:Verdana;color:blue'>- BR2 : higher priority
(2)<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Verdana><span lang=EN-GB
style='font-size:10.0pt;font-family:Verdana;color:blue'>- BR3 : same as BR2<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Verdana><span lang=EN-GB
style='font-size:10.0pt;font-family:Verdana;color:blue'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Verdana><span lang=EN-GB
style='font-size:10.0pt;font-family:Verdana;color:blue'>Sorry<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Verdana><span lang=EN-GB
style='font-size:10.0pt;font-family:Verdana;color:blue'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Verdana><span lang=EN-GB
style='font-size:10.0pt;font-family:Verdana;color:blue'>Joel<o:p></o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>De :</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
rules-users-bounces@lists.jboss.org
[mailto:rules-users-bounces@lists.jboss.org] <b><span style='font-weight:bold'>De
la part de</span></b> Costigliola Joel (EXT)<br>
<b><span style='font-weight:bold'>Envoyé :</span></b> mercredi 28 octobre
2009 14:57<br>
<b><span style='font-weight:bold'>À :</span></b> '<st1:PersonName w:st="on">Rules
Users List</st1:PersonName>'<br>
<b><span style='font-weight:bold'>Objet :</span></b> [rules-users]
Specific Agenda strategy to control which rules to fire</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'>Hello all,<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'>I need some help to to set a specific Agenda
strategy in order to control finely which activated rules will be fired.<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'>Problem context :<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'>-----------------<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'>My company is a bank where traders are making deals
on markets, these deals must be classified in book, this is what we call
“booking process”.<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'>Booking is done according to booking criteria :
which trader has made the deal ? on which product ? wich market ? etc … <u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'>A booking rule defines a set of criteria and the
target book where the deal will classified, it also has a priority, note that
it is ok that two booking rule have same priority. <u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'>I want to implement booking rule as Drools rule.<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'>Several booking rule can be applied to a deal, in
that case choosing the right booking rule to fire depends on the following
algorithm : <u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'>- look all the activated booking rule of the
highest priority, <u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'>--- if there is a unique rule apply it<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'>--- if there is no unique rule (0 rule or more than
one), look at rules of a lesser priority and apply the same logic.<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'>Next section is an example that will clear things
(I hope).<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'>Example :<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'>---------<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'>A deal D1 has been done by Alex on NY market to buy
Google stocks.<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'>We have 3 booking rules : <u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'>- BR1 : criteria = trader=Alex / book = B1<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'>- BR2 : criteria = trader=Alex and product = google
stock / book = B2<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'>As BR2 is more precise than BR1, il will matches
the deal and book it in B1<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'>If the deal was on another product, BR1 would have
been applied.<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'>Things gets more complicated when 2 rules of same
priority can be applied. <u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'>Let's imagine we add the following booking rule <u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'>- BR3 : criteria = trader=Alex and market = NY /
book = B3<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'>We have a problem to book D1 since BR2 and BR3 can
be applied but have same priority. <u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'>We can't choose one over the other thus we must
apply a less precise/prioritary rule (if unique at its own precision level).<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'>In my example, that would lead to apply BR1.<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'>Question :<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'>----------<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'>If I define BR1,BR2,BR3 as Drools rules, how can I
tell Drools : <u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'>- to execute a rule only if there is no other
active rule with same precision that could be applied ?<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'>- to look for a unique matching rule with less
precision level ?<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'>I think it's the Agenda responsibility to take this
decision, but I don't know how implement that.<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'>Can you give some advices on that ?<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span lang=EN-GB style='font-size:
10.0pt;font-family:Verdana'>Thanks for your lights in advance,<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span style='font-size:10.0pt;
font-family:Verdana'>Regards,<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span style='font-size:10.0pt;
font-family:Verdana'><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span style='font-size:10.0pt;
font-family:Verdana'>Joel<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Verdana><span style='font-size:10.0pt;
font-family:Verdana'><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><u1:p> </u1:p><o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
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