I don't think you should consider an agenda strategy for this.<br><br>Add a simple class:<br> class Score{<br> int level; int coun; Deal deal; Book book; <br> Score( Deal deal, int level ){...} <br> }<br><br>
and insert an instance along with the Deal to be classified:<br><br>insert( deal );<br>insert( new Score( deal ) );<br><br>Rules for level 2 would be written according to:<br><br>rule "trader and product"<br>salience 10<br>
when<br><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB"> $s : Score( level == 2, $d : deal )<br></span></font> Deal( this == $d, <font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB">trader=="Alex", product == "GOOG" )<br>
then<br> $s.setCount( $s.getCount() + 1 );<br> $s.setBook( "B2" );<br>end<br><br>Then you'll need a couple of rules handling success and failure:<br><br>rule "post level success"<br>salience 5<br>
when<br> $s : Score( $l : level, count == 1, $d : deal, $b : book )<br>then<br> assign $d to $b, retract $d<br> retract( $s );<br>end <br></span></font><br><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB">rule "post level failure"<br>
salience 5<br>
when<br>
$s : Score( $l : level, count != 1 )<br>
then<br>
modify( $s ){<br> setLevel( $l - 1 );<br> }<br>
end </span></font><br><br>Rules for level 1 would also be at salience 10.<br><br>A rule for level == 0 should catch Deals "gone down" through all levels.<br><br>-W<br><br><br><br><div class="gmail_quote">2009/10/28 Costigliola Joel (EXT) <span dir="ltr"><<a href="mailto:joel.costigliola-ext@natixis.com">joel.costigliola-ext@natixis.com</a>></span><br>
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<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB">Hello all,</span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB"> </span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB">I need some help to to set a specific Agenda
strategy in order to control finely which activated rules will be fired.</span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB"> </span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB">Problem context :</span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB">-----------------</span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB">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”.</span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB">Booking is done according to booking criteria :
which trader has made the deal ? on which product ? wich market ? etc … </span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB">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. </span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB">I want to implement booking rule as Drools rule.</span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB">Several booking rule can be applied to a deal, in
that case choosing the right booking rule to fire depends on the following
algorithm : </span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB">- look all the activated booking rule of the
highest priority, </span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB">--- if there is a unique rule apply it</span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB">--- if there is no unique rule (0 rule or more than
one), look at rules of a lesser priority and apply the same logic.</span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB"> </span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB">Next section is an example that will clear things
(I hope).</span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB"> </span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB">Example :</span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB">---------</span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB">A deal D1 has been done by Alex on NY market to buy
Google stocks.</span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB">We have 3 booking rules : </span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB">- BR1 : criteria = trader=Alex / book = B1</span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB">- BR2 : criteria = trader=Alex and product = google
stock / book = B2</span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB">As BR2 is more precise than BR1, il will matches
the deal and book it in B1</span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB">If the deal was on another product, BR1 would have
been applied.</span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB"> </span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB">Things gets more complicated when 2 rules of same
priority can be applied. </span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB">Let's imagine we add the following booking rule </span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB">- BR3 : criteria = trader=Alex and market = NY /
book = B3</span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB">We have a problem to book D1 since BR2 and BR3 can
be applied but have same priority. </span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB">We can't choose one over the other thus we must
apply a less precise/prioritary rule (if unique at its own precision level).</span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB">In my example, that would lead to apply BR1.</span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB"> </span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB">Question :</span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB">----------</span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB">If I define BR1,BR2,BR3 as Drools rules, how can I
tell Drools : </span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB">- to execute a rule only if there is no other
active rule with same precision that could be applied ?</span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB">- to look for a unique matching rule with less
precision level ?</span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB"> </span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB">I think it's the Agenda responsibility to take this
decision, but I don't know how implement that.</span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB">Can you give some advices on that ?</span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB"> </span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;" lang="EN-GB">Thanks for your lights in advance,</span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;">Regards,</span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;"> </span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;">Joel</span></font></p>
<p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size: 10pt; font-family: Verdana;"> </span></font></p>
<p class="MsoNormal"><font face="Times New Roman" size="3"><span style="font-size: 12pt;"> </span></font></p>
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