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<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Thank you for your fast answer. <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Thanks<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Rainer<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'>
<p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:
"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> rules-users-bounces@lists.jboss.org
[mailto:rules-users-bounces@lists.jboss.org] <b>On Behalf Of </b>Edson Tirelli<br>
<b>Sent:</b> Dienstag, 5. Mai 2009 14:50<br>
<b>To:</b> Rules Users List<br>
<b>Subject:</b> Re: [rules-users] Problems with custom functions and types in
one drlfile<o:p></o:p></span></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><br>
This is a bug that was fixed a few weeks ago. If you can use
trunk, you will not have this problem.<br>
<br>
[]s<br>
Edson<o:p></o:p></p>
<div>
<p class=MsoNormal>2009/5/5 Rainer Schulz <<a
href="mailto:Rainer.Schulz@trivadis.com">Rainer.Schulz@trivadis.com</a>><o:p></o:p></p>
<div>
<p><span lang=EN-US style='font-family:"Calibri","sans-serif"'>Hi, </span><o:p></o:p></p>
<p><span lang=EN-US style='font-family:"Calibri","sans-serif"'>i have some
problems with custom functions and types.</span><span lang=EN-US> </span><o:p></o:p></p>
<p><span lang=EN-US style='font-family:"Calibri","sans-serif"'>I m</span><span
lang=EN-US> </span><span lang=EN-US style='font-family:"Calibri","sans-serif"'>using
Drools 5.0 and Eclipse 3.4.2 (have to use these eclipse version, so my decision
was to use the drools beta).</span><o:p></o:p></p>
<p><span lang=EN-US style='font-family:"Calibri","sans-serif"'>I declared a
type in my rule file like : </span><o:p></o:p></p>
<p><b><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'>declare</span></b><span
lang=EN-US> </span><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'>VarHolder</span><o:p></o:p></p>
<p><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> </span><span
lang=EN-US> </span><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'>var1
: String</span><o:p></o:p></p>
<p><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> </span><span
lang=EN-US> </span><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'>var2
:</span><span lang=EN-US> </span><span lang=EN-US style='font-size:10.0pt;
font-family:"Courier New"'>Long</span><o:p></o:p></p>
<p><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> </span><span
lang=EN-US> </span><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'>var3
:</span><span lang=EN-US> </span><span lang=EN-US style='font-size:10.0pt;
font-family:"Courier New"'>String</span><o:p></o:p></p>
<p><b><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'>end</span></b><o:p></o:p></p>
<p><span lang=EN-US style='font-family:"Calibri","sans-serif"'>also i specified
a custom function in the same file, which i have to use in my rules (it’s</span><span
lang=EN-US> </span><span lang=EN-US style='font-family:"Calibri","sans-serif"'>a
example function) : </span><o:p></o:p></p>
<p><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'>function
String hello(String name) {</span><o:p></o:p></p>
<p><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'> </span><span
lang=EN-US> </span><span style='font-size:10.0pt;font-family:"Courier New"'>return
"Hello "+name+"!";</span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Courier New"'>}</span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Courier New"'>.</span><o:p></o:p></p>
<p><span lang=EN-US style='font-family:"Calibri","sans-serif"'>The declared
Type will be used in the java code</span><span lang=EN-US> </span><span
lang=EN-US style='font-family:"Calibri","sans-serif"'>: </span><o:p></o:p></p>
<p><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'>//
handle the type as necessary:</span><o:p></o:p></p>
<p><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'>//
create instances:</span><o:p></o:p></p>
<p><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'>Object</span><span
lang=EN-US> </span><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'>vars
=</span><span lang=EN-US> </span><span lang=EN-US style='font-size:10.0pt;
font-family:"Courier New"'>varHolderTyp.newInstance();</span><o:p></o:p></p>
<p><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'>// set
attributes values</span><o:p></o:p></p>
<p><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'>varHolderTyp.setFromMap(vars,varMap);</span><o:p></o:p></p>
<p><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'>//
insert fact into a session</span><o:p></o:p></p>
<p><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'>StatefulKnowledgeSession
ksession = ...</span><o:p></o:p></p>
<p><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'>ksession.insert(</span><span
lang=EN-US> </span><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'>vars
);</span><o:p></o:p></p>
<p><span lang=EN-US style='font-family:"Calibri","sans-serif"'>When it comes to
the</span><span lang=EN-US> </span><span lang=EN-US style='font-family:"Calibri","sans-serif"'>“setFromMap”,
then</span><span lang=EN-US> </span><span lang=EN-US style='font-family:"Calibri","sans-serif"'>I
get a ClassCastException for the VarHolderTyp. But when</span><span lang=EN-US>
</span><span lang=EN-US style='font-family:"Calibri","sans-serif"'>I remove the
declaration of the function in the rule file, then everything works fine (all
variables will be filled correctly). It seems, that the reflection</span><span
lang=EN-US> </span><span lang=EN-US style='font-family:"Calibri","sans-serif"'>mechanism</span><span
lang=EN-US> </span><span lang=EN-US style='font-family:"Calibri","sans-serif"'>will
not work correctly, when drools want to create the Pojo for VarHolder and</span><span
lang=EN-US> </span><span lang=EN-US style='font-family:"Calibri","sans-serif"'>the
Static Method for the function. But it s very</span><span lang=EN-US> </span><span
lang=EN-US style='font-family:"Calibri","sans-serif"'>difficult to debug,
because the exception fires in the drools engine. </span><o:p></o:p></p>
<p><span lang=EN-US style='font-family:"Calibri","sans-serif"'>Maybe</span><span
lang=EN-US> </span><span lang=EN-US style='font-family:"Calibri","sans-serif"'>I’ve
make a mistake so</span><span lang=EN-US> </span><span lang=EN-US
style='font-family:"Calibri","sans-serif"'>anyone knows a solution for
this problem or can tell me, where my mistake is.</span><span lang=EN-US> </span><span
lang=EN-US style='font-family:"Calibri","sans-serif"'>It will be nice, when</span><span
lang=EN-US> </span><span lang=EN-US style='font-family:"Calibri","sans-serif"'>I
can declare a type and a function</span><span lang=EN-US> </span><span
lang=EN-US style='font-family:"Calibri","sans-serif"'>together</span><span
lang=EN-US> </span><span lang=EN-US style='font-family:"Calibri","sans-serif"'>in
one rule</span><span lang=EN-US> </span><span lang=EN-US style='font-family:
"Calibri","sans-serif"'>file.</span><span lang=EN-US> </span><span
lang=EN-US style='font-family:"Calibri","sans-serif"'> At the moment,</span><span
lang=EN-US> </span><span lang=EN-US style='font-family:"Calibri","sans-serif"'>I
created a java class for VarHolder, so the exception does not appear, but</span><span
lang=EN-US> </span><span lang=EN-US style='font-family:"Calibri","sans-serif"'>I
m losing a lot of dynamic. </span><o:p></o:p></p>
<p><span lang=EN-US style='font-family:"Calibri","sans-serif"'>Please give me a
hint</span><o:p></o:p></p>
</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><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></p>
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