<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv=Content-Type content="text/html; charset=iso-8859-1">
<meta name=Generator content="Microsoft Word 12 (filtered medium)">
<!--[if !mso]>
<style>
v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style>
<![endif]-->
<style>
<!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:Consolas;
panose-1:2 11 6 9 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman","serif";
color:black;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
pre
{mso-style-priority:99;
mso-style-link:"HTML Vorformatiert Zchn";
margin:0cm;
margin-bottom:.0001pt;
font-size:10.0pt;
font-family:"Courier New";
color:black;}
span.E-MailFormatvorlage17
{mso-style-type:personal;
font-family:"Arial","sans-serif";
color:#1F497D;}
span.HTMLVorformatiertZchn
{mso-style-name:"HTML Vorformatiert Zchn";
mso-style-priority:99;
mso-style-link:"HTML Vorformatiert";
font-family:Consolas;
color:black;}
span.E-MailFormatvorlage20
{mso-style-type:personal-reply;
font-family:"Arial","sans-serif";
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:70.85pt 70.85pt 2.0cm 70.85pt;}
div.WordSection1
{page:WordSection1;}
-->
</style>
<!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body bgcolor=white lang=DE link=blue vlink=purple>
<div class=WordSection1>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>Thanks for this advice, that’s exactly what I’m looking
for, and if I want to use it in the guvnor, is it planned to realize this also
there or can it be done unde Other meta data -> type? I use guvnor version
5.0.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>Regards,<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>Dominik<o:p></o:p></span></p>
<div>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
</div>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:windowtext'>Von:</span></b><span style='font-size:10.0pt;font-family:
"Tahoma","sans-serif";color:windowtext'> Vincent Legendre
[mailto:vincent.legendre@eurodecision.com] <br>
<b>Gesendet:</b> Dienstag, 19. Oktober 2010 17:27<br>
<b>An:</b> Rules Users List<br>
<b>Cc:</b> Dominik Hüttner; leonardo.f.gomes@gmail.com<br>
<b>Betreff:</b> Re: [rules-users] Get rid of redundant conditions in combined
rules.<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'>There is something in 5.x which
allow a rule to inherit from another. Inheritance is on parent rule conditions.<br>
<br>
May be you could write something like this:<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US>rule "london_guys"</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US>when</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US>
customer:Customer(town=="London")</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US>then</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US>
System.out.println(customer.getLname() + " is inhabitant of London");</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><span
lang=EN-US>end</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US>rule "london teachers" extends "london_guys"</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US>when</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US>
Customer(job=="TEACHER") from customer</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US>then</span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US>
System.out.println(customer.getLname() + " is a teacher");</span><br>
end<br>
<br>
BUT ... <br>
1 - As you can see you cannot inject a new contraint in a
'parent' pattern. So you have to use first variable as a source for the second
pattern ...<br>
2 - Bindings in parent rule only works in 5.1 version (may
be only in trunk), so be careful<br>
<br>
<br>
To conclude, try to check (<a href="https://jira.jboss.org/browse/JBRULES-1812">here</a>,
for a sample, that may not work, this functionnality is not documented yet),
but I think leonardo's solution is best. May be you can adapt it to avoid
create new classes, but you could use an additional field in your actual class
to "tag" facts according to what your first rules concludes. <br>
<br>
<br>
<br>
Le 19/10/2010 16:29, Dominik Hüttner a écrit : <o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif"'>Hi
Leonardo,</span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif"'>the
performance problem I thought of meant removing and inserting the facts again
and again, if I would remove the facts, that don’t fit the first rule and
execute the second rule only on the remaining facts. </span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif"'>The
solution you offered, does, what I intend, but the problem is, that I have to
create a new class for every rule-pair and I want to use it flexible, without
having to create a new class / model for every rule. Is there maybe another way
to solve this problem?</span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif"'> </span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif"'>Kind
regards,</span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif"'> </span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif"'>Dominik</span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif"'> </span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif"'> </span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif"'> </span><o:p></o:p></p>
<div style='border:none;border-top:solid windowtext 1.0pt;padding:3.0pt 0cm 0cm 0cm;
border-color:rgb(181, 196, 223) -moz-use-text-color -moz-use-text-color'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Von:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <a
href="mailto:rules-users-bounces@lists.jboss.org">rules-users-bounces@lists.jboss.org</a>
[<a href="mailto:rules-users-bounces@lists.jboss.org">mailto:rules-users-bounces@lists.jboss.org</a>]
<b>Im Auftrag von </b>Leonardo Gomes<br>
<b>Gesendet:</b> Dienstag, 12. Oktober 2010 16:37<br>
<b>An:</b> Rules Users List<br>
<b>Betreff:</b> Re: [rules-users] Get rid of redundant conditions in combined
rules.</span><o:p></o:p></p>
</div>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'>If your problem is performance,
don't worry. Conditions evaluation is shared, so in the second rule you won't
re-evaluate the entire working memory (to know more:<a
href="http://www.drdobbs.com/184405218">http://www.drdobbs.com/184405218</a>).<br>
<br>
If you're worried about not having to repeat the conditions on the second rule,
I would create inferred facts when the first rule matches and use then in the
second rule + the additional conditions.<br>
<br>
Something like:<o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US>Rule1:</span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US>when</span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US>
customer:Customer(town=="London")</span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US>then</span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US>
insert new LondonCustomer( customer );</span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US> </span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US>Rule2:</span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US>when</span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US>
london : LondonCustomer(customer.job=="TEACHER")</span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US>then</span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US>
System.out.println(london.customer.getLname() + " is a teacher");</span><o:p></o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'> <o:p></o:p></p>
<div>
<p class=MsoNormal>2010/10/12 Dominik Hüttner <<a
href="mailto:d.huettner@tiq-solutions.de">d.huettner@tiq-solutions.de</a>><o:p></o:p></p>
<div>
<div>
<p class=MsoNormal><span lang=EN-US>Hello everyone,</span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US>I’ve got a question. I’m using
drools-guvnor to execute some rule-scenarios. I have to solve the following
problem: I have an amount of objects in my working memory and can’t
remove objects from the working memory in the then-part of the rule. I want to combine
two rules, the first rule selects some objects and the second rule checks only
these selected objects for additional criteria. I have to use two rules,
because I want to report the objects selected in the first rule, too. Now I
have implemented this with two rules and in the second rule, the criterias of
the first rule are copied to the second rule, my question is, is there a way to
get rid of this redundandance?</span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US>I have tried this with a rule flow, but the
problem is, this always works on the whole working memory, but I can’t
remove the not used objects from working memory for performance reasons. Is
there another way to solve this problem?</span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US> </span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US>Here is an example for what I intend to do:</span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US> </span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US>Rule1:</span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US>when</span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US>
customer:Customer(town=="London")</span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US>then</span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US>
System.out.println(customer.getLname() + " is inhabitant of London");</span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US> </span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US>Rule2:</span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US>when</span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US>
customer:Customer(town=="London",job=="TEACHER")</span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US>then</span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US>
System.out.println(customer.getLname() + " is a teacher");</span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US> </span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US>This example illustrates, with the first
rule I want to get to know, how many customers are from London and in the
second rule I want to know, how many of the London customers are teachers. I
want to create a kind of statistics. I have quite a lot of conditions for the
first rule, so I don’t want to have them redundantly.</span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US> </span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US>Greetings, Dominik</span><o:p></o:p></p>
</div>
</div>
<p class=MsoNormal style='margin-bottom:12.0pt'><br>
_______________________________________________<br>
rules-users mailing list<br>
<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></p>
</div>
<p class=MsoNormal> <o:p></o:p></p>
<pre><o:p> </o:p></pre><pre><o:p> </o:p></pre><pre>_______________________________________________<o:p></o:p></pre><pre>rules-users mailing list<o:p></o:p></pre><pre><a
href="mailto:rules-users@lists.jboss.org">rules-users@lists.jboss.org</a><o:p></o:p></pre><pre><a
href="https://lists.jboss.org/mailman/listinfo/rules-users">https://lists.jboss.org/mailman/listinfo/rules-users</a><o:p></o:p></pre>
<p class=MsoNormal style='margin-bottom:12.0pt'><o:p> </o:p></p>
<div>
<p class=MsoNormal>-- <br>
<span style='font-size:13.5pt;font-family:"Arial","sans-serif"'>Vincent LEGENDRE</span><br>
<i><span style='font-size:8.5pt;font-family:"Arial","sans-serif"'>Consultant
Sénior</span></i><br>
<span style='font-size:4.5pt'><br>
</span><span style='font-size:9.0pt;font-family:"Arial","sans-serif"'>EURODECISION</span><br>
<span style='font-size:9.0pt;font-family:"Arial","sans-serif"'>9A rue de la
Porte de Buc 78000 VERSAILLES<br>
Tél. : +33 (0)1 39 07 12 40<br>
Direct : +33 (0)1 39 07 26 16<br>
www.eurodecision.com</span><br>
<a href="http://www.eurodecision.com/"><span style='text-decoration:none'><img
border=0 width=206 height=66 id="_x0000_i1025"
src="cid:image001.gif@01CB7042.9672F5E0" alt=EURODECISION></span></a><o:p></o:p></p>
</div>
</div>
</body>
</html>