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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I don’t know your circumstances, but you might question why rank
is a String in the first place. Is the UI unduly influencing your data model?
You could always add a synthetic getter to your model itself and evade the eval
altogether:<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>public int getRankInt() { … }<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>That’s an ugly hack, but if your rank attribute is really an
integer anyway… <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>In any case, I’d suggest that you add a guard in your conversion
utility to check for “” and null Strings maybe default to 0 or throw some
exception.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Cheers,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>-Jess<o:p></o:p></span></p>
<p class=MsoNormal><span 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 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
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>M.DILIP KUMAR<br>
<b>Sent:</b> Tuesday, December 02, 2008 5:40 AM<br>
<b>To:</b> Rules Users List<br>
<b>Subject:</b> Re: [rules-users] Inline eval problem!<o:p></o:p></span></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal>Hi ,<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> i can suggest one more way to solve it. Dont
create instance in when part.<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>Instead of better you convert that helper class method as
static methods.<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>So that u can call that method directly . but before that
u should import that helper class in drl file.<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> Or second way u can directly write a method
in ur drl file itself.<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><br>
Example :<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <b><span style='font-size:10.0pt;color:#960000'><o:p></o:p></span></b></p>
</div>
<div>
<p class=MsoNormal><b><span style='font-size:10.0pt;color:#960000'>import</span></b><span
style='font-size:10.0pt'>
com.g2x.agility.leads.workflow.rulesengine.RuleUtilities;<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>rule"ConvertRule"<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>when <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>
eval ( RuleUtilities.getStringToInteger( age) > 40)<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>// getStringToInteger(String age) is static method<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>then <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> System.out.print("XXXXName");<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>end<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<div>
<div>
<div>
<p class=MsoNormal><b><i><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#AA4D4E'>Defeat yourself today!</span><span style='color:blue'><o:p></o:p></span></i></b></p>
</div>
</div>
<div>
<div>
<p class=MsoNormal><b><i><span style='font-size:10.0pt;font-family:"Palatino Linotype","serif";
color:maroon'>____________________________</span></i></b><b><i><span
style='font-size:10.0pt;color:black'> </span><span style='color:blue'><o:p></o:p></span></i></b></p>
</div>
</div>
<p class=MsoNormal> <em><b><span style='color:#C49B71'>DILIP
KUMAR.M</span></b></em><o:p></o:p></p>
</div>
<p class=MsoNormal><br>
<br>
--- On <b>Tue, 2/12/08, vanshi <i><nilu.thakur@gmail.com></i></b>
wrote:<o:p></o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'>From: vanshi
<nilu.thakur@gmail.com><br>
Subject: [rules-users] Inline eval problem!<br>
To: rules-users@lists.jboss.org<br>
Date: Tuesday, 2 December, 2008, 10:38 AM<o:p></o:p></p>
<pre>I need to convert a variable from string to intger in the rule. That variable<o:p></o:p></pre><pre>here is rank, so, I create a helper class called 'Conversion' with just<o:p></o:p></pre><pre>one<o:p></o:p></pre><pre>function/method, which is supposed to convert the string argument passed to<o:p></o:p></pre><pre>it, to an integer and then I call that method in rule as inline eval.<o:p></o:p></pre><pre>What's<o:p></o:p></pre><pre>wrong here because this is not working and I don't want to change<o:p></o:p></pre><pre>'When'<o:p></o:p></pre><pre>part too much because it has 10 or so other variable with &&<o:p></o:p></pre><pre>connective,<o:p></o:p></pre><pre>which I've removed for clarity here. Any input would be appreciated much.<o:p></o:p></pre><pre><o:p> </o:p></pre><pre>package harules;<o:p></o:p></pre><pre>import com.hibernate.Person;<o:p></o:p></pre><pre>import com.uhg.utils.Conversion;<o:p></o:p></pre><pre><o:p> </o:p></pre><pre>rule "one"<o:p></o:p></pre><pre>salience 10<o:p></o:p></pre><pre> when<o:p></o:p></pre><pre> $con: Conversion();<o:p></o:p></pre><pre> pers: Person(age!= null , age >= 18 , eval($con.getInteger(rank) > 140))<o:p></o:p></pre><pre> then<o:p></o:p></pre><pre> System.out.println("Evaluated true");<o:p></o:p></pre><pre>end<o:p></o:p></pre><pre><o:p> </o:p></pre><pre>//content of Conversion class<o:p></o:p></pre><pre>package com.utils;<o:p></o:p></pre><pre>public class Conversion {<o:p></o:p></pre><pre>public Integer getInteger(String s)<o:p></o:p></pre><pre>{<o:p></o:p></pre><pre> return Integer.parseInt(s);<o:p></o:p></pre><pre>}<o:p></o:p></pre><pre>}<o:p></o:p></pre><pre>-- <o:p></o:p></pre><pre>View this message in context:<o:p></o:p></pre><pre>http://www.nabble.com/Inline-eval-problem%21-tp20786253p20786253.html<o:p></o:p></pre><pre>Sent from the drools - user mailing list archive at Nabble.com.<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>rules-users@lists.jboss.org<o:p></o:p></pre><pre>https://lists.jboss.org/mailman/listinfo/rules-users<o:p></o:p></pre></td>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif"'><o:p> </o:p></span></p>
<div class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Calibri","sans-serif"'>
<hr size=1 width="100%" align=center>
</span></div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif"'>Add
more friends to your messenger and enjoy! <a
href="http://in.rd.yahoo.com/tagline_messenger_6/*http:/messenger.yahoo.com/invite/">Invite
them now.</a><o:p></o:p></span></p>
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