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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Thanks Edson. Is there any example to rewrite
the rule without rule?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><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'>From:</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'>On
Behalf Of </span></b>Edson Tirelli<br>
<b><span style='font-weight:bold'>Sent:</span></b> Friday, September 05, 2008
2:59 PM<br>
<b><span style='font-weight:bold'>To:</span></b> Rules Users List<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [rules-users] Drools,
Performance issues on 4.0.7 Vs 2.5</span></font><o:p></o:p></p>
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<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 style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><br>
Start by eliminating the evals and writing your constraints
properly inside the patterns. Drools 3+ is orders of magnitude faster than
Drools 2.x, but you need to leverage its power in your rules. Please read the
manual as the version 3 was a completely rewrite of version 2. Version 4 is an
improvement over 3.<br>
<br>
As an example, look at this: <a
href="http://blog.athico.com/2006/11/rush-hour-and-content-based-routing.html">http://blog.athico.com/2006/11/rush-hour-and-content-based-routing.html</a><br>
<br>
[]s<br>
Edson<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:
12.0pt'>2008/9/5 Rout, Sushanta (ThoughtMill) <<a
href="mailto:Sushanta.Rout@ihg.com">Sushanta.Rout@ihg.com</a>><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>We were using Drools 2.5 version earlier. Now we have switched to
drools<br>
<a href="http://4.0.7." target="_blank">4.0.7.</a> But we see significant
issues with performance like drools 4.0.7<br>
is three times slower than 2.5 . Has anybody encountered the issue?<br>
<br>
Here is a sample of the rule, we have some more similar to this.<br>
rule "test"<br>
dialect "java"<br>
activation-group "group1"<br>
when<br>
$croNumberDetailsRequest
: CRONumberDetailsRequest()<br>
$resdirectPhoneNumber :
ResdirectPhoneNumber()<br>
eval($resdirectPhoneNumber.getType().getId() == 5 &&<br>
<br>
$resdirectPhoneNumber.isValidForBrand($croNumberDetailsRequest.getBrand(<br>
)) &&<br>
$croNumberDetailsRequest.getRegion() != null &&<br>
<br>
$resdirectPhoneNumber.isValidRegion($croNumberDetailsRequest.getRegion()<br>
) &&<br>
$croNumberDetailsRequest.getLocale() != null &&<br>
<br>
<br>
$resdirectPhoneNumber.isValidForLocaleId($croNumberDetailsRequest.getLoc<br>
ale()) &&<br>
<br>
$resdirectPhoneNumber.isValidSlot($croNumberDetailsRequest.getSlot()));<br>
<br>
then<br>
ResultList.add($resdirectPhoneNumber);<br>
end<br>
<br>
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<a href="mailto:rules-users@lists.jboss.org">rules-users@lists.jboss.org</a><br>
<a href="https://lists.jboss.org/mailman/listinfo/rules-users" target="_blank">https://lists.jboss.org/mailman/listinfo/rules-users</a><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:
12.0pt'><br>
<br clear=all>
<br>
-- <br>
Edson Tirelli<br>
JBoss Drools Core Development<br>
JBoss, a division of Red Hat @ <a href="http://www.jboss.com">www.jboss.com</a><o:p></o:p></span></font></p>
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