<html><body><div style="color:#000; background-color:#fff; font-family:tahoma, new york, times, serif;font-size:10pt"><div><span>Thanks for the explanation, Geoffrey.</span></div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: tahoma,new york,times,serif; background-color: transparent; font-style: normal;"><span><br></span></div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: tahoma,new york,times,serif; background-color: transparent; font-style: normal;"><span>I voted for </span><span><a rel="nofollow" class="yiv1246985838moz-txt-link-freetext" target="_blank" href="https://issues.jboss.org/browse/JBRULES-3702">https://issues.jboss.org/browse/JBRULES-3702</a> and I hope other users do so too.</span></div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: tahoma,new york,times,serif; background-color: transparent; font-style: normal;"><span>I think it can be very handy for less experienced
users (like myself) to get to understand how things work.</span></div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: tahoma,new york,times,serif; background-color: transparent; font-style: normal;"><br><span></span></div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: tahoma,new york,times,serif; background-color: transparent; font-style: normal;"><span>Concerning the "</span>You can put System.out.println() in the RHS.", that only shows when the "then" part is invoked.</div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: tahoma,new york,times,serif; background-color: transparent; font-style: normal;">Sometimes I add a dummy method "invoked" to my planning entity which always returns true and prints all data I want.</div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: tahoma,new york,times,serif; background-color: transparent; font-style: normal;">I put this method as a
condition in the LHS.<br></div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: tahoma,new york,times,serif; background-color: transparent; font-style: normal;">Though that is no permanent solution as I do not want to clutter my rules with such dummy conditions.</div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: tahoma,new york,times,serif; background-color: transparent; font-style: normal;"><br></div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: tahoma,new york,times,serif; background-color: transparent; font-style: normal;">Regards,</div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: tahoma,new york,times,serif; background-color: transparent; font-style: normal;"><br></div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: tahoma,new york,times,serif; background-color: transparent; font-style:
normal;">Michiel<br></div><div> </div><div>-----------------<br>http://www.codessentials.com - Your essential software, for free!<br>Follow us at http://twitter.com/#!/Codessentials<br></div> <div style="font-family: tahoma, new york, times, serif; font-size: 10pt;"> <div style="font-family: times new roman, new york, times, serif; font-size: 12pt;"> <div dir="ltr"> <font face="Arial" size="2"> <hr size="1"> <b><span style="font-weight:bold;">From:</span></b> Geoffrey De Smet <ge0ffrey.spam@gmail.com><br> <b><span style="font-weight: bold;">To:</span></b> Michiel Vermandel <mvermand@yahoo.com>; Rules Users List <rules-users@lists.jboss.org> <br> <b><span style="font-weight: bold;">Sent:</span></b> Friday, December 7, 2012 9:35 AM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: documentation on rules engine and planner<br> </font> </div> <br><div id="yiv1246985838">
<div>
<br>
<div class="yiv1246985838moz-cite-prefix">Op 07-12-12 08:29, Michiel Vermandel
schreef:<br>
</div>
<blockquote type="cite">
<div style="color:#000;background-color:#fff;font-family:tahoma, new york, times, serif;font-size:10pt;">Hi,<br>
<br>
I would like to read some documentation on how the rules engine
(specifically for planner) works.<br>
I have a number of unanswered questions.<br>
<br>
Some type of questions:<br>
<br>
- If I have two rules in my drl file, will the engine execute
first the first rule with all possible combinations of the
planning entities matching the conditions of the rule<br>
and then the second rule with all possible combinations of
the planning entities matching the conditions of the rule<br>
</div>
</blockquote>
the order depends on the rule agenda, see drools expert manual<br>
<a rel="nofollow" class="yiv1246985838moz-txt-link-freetext" target="_blank" href="http://docs.jboss.org/drools/release/5.5.0.Final/drools-expert-docs/html_single/index.html">http://docs.jboss.org/drools/release/5.5.0.Final/drools-expert-docs/html_single/index.html</a><br>
<blockquote type="cite">
<div style="color:#000;background-color:#fff;font-family:tahoma, new york, times, serif;font-size:10pt;"><span>- Can I trace which
rules are executed with what planning-variables and in which
order</span><br>
</div>
</blockquote>
You can put System.out.println() in the RHS.<br>
Drools expert does not support TRACE logging to support this for you
currently.<br>
If you would like this, vote for this issue:<br>
<a rel="nofollow" class="yiv1246985838moz-txt-link-freetext" target="_blank" href="https://issues.jboss.org/browse/JBRULES-3702">https://issues.jboss.org/browse/JBRULES-3702</a><br>
<br>
<blockquote type="cite">
<div style="color:#000;background-color:#fff;font-family:tahoma, new york, times, serif;font-size:10pt;">
<div><span>- What is the purpose of the last variable amount of
parameters ($x, $y, $z) in the RHS logic insertLogical(new
IntConstraintOccurrence( ... , $x, $y ,$z))</span></div>
</div>
</blockquote>
Those "causes" is to keep Drools Expert's insertLogical's behaviour
happy because an <span>IntConstraintOccurrence's equals/hashcode is
called so only 1 can be in the working memory.<br>
Basically, they explain what caused that part of the score. It's
interesting if you want to use them to explain why a solution has
a certain score.<br>
But, on the other hand, it's a PITA and I am working on an
alternative that's easier to use and faster, once drools expert
supports ChangeMatchListeners.<br>
<br>
In any case, it's a valid issue that the docs don't explain this
causes thing.<br>
</span>
<blockquote type="cite">
<div style="color:#000;background-color:#fff;font-family:tahoma, new york, times, serif;font-size:10pt;">
<div style="color:rgb(0, 0, 0);font-size:13.3333px;font-family:tahoma, new york, times, serif;
background-color:transparent;font-style:normal;"><br>
<span></span></div>
<div style="color:rgb(0, 0, 0);font-size:13.3333px;font-family:tahoma, new york, times, serif;
background-color:transparent;font-style:normal;"><span>I know there is
<a rel="nofollow" class="yiv1246985838moz-txt-link-freetext" target="_blank" href="http://docs.jboss.org/drools/release/5.5.0.Final/drools-planner-docs/html_single/index.html">http://docs.jboss.org/drools/release/5.5.0.Final/drools-planner-docs/html_single/index.html</a>
but it does not really answer the above questions.<br>
</span></div>
<div style="color:rgb(0, 0, 0);font-size:13.3333px;font-family:tahoma, new york, times, serif;
background-color:transparent;font-style:normal;"><br>
<span></span></div>
<div style="color:rgb(0, 0, 0);font-size:13.3333px;font-family:tahoma, new york, times, serif;
background-color:transparent;font-style:normal;"><span>Thanks,</span></div>
<div style="color:rgb(0, 0, 0);font-size:13.3333px;font-family:tahoma, new york, times, serif;
background-color:transparent;font-style:normal;"><br>
<span></span></div>
<div style="color:rgb(0, 0, 0);font-size:13.3333px;font-family:tahoma, new york, times, serif;
background-color:transparent;font-style:normal;"><span>Michiel<br>
</span></div>
<div> </div>
<div>-----------------<br>
<a rel="nofollow" class="yiv1246985838moz-txt-link-freetext" target="_blank" href="http://www.codessentials.com/">http://www.codessentials.com</a> - Your essential software, for
free!<br>
Follow us at <a rel="nofollow" class="yiv1246985838moz-txt-link-freetext" target="_blank" href="http://twitter.com/#!/Codessentials">http://twitter.com/#!/Codessentials</a></div>
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</blockquote>
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