<br> It obviously work for me here... :) as Murphy would predict.<br><br> I added a second rule:<br><br>rule "G2 Equity in Asset"<br> when<br> $d : IndividualDecision(loanToValue < 85.0)<br>
then<br> System.out.println("Lower than 85.0 loanToValue: " + ($d.getLoanToValue()));<br>end<br><br>rule "G2 Equity in Asset - 2"<br> when<br> $d : IndividualDecision(loanToValue >= 85.0)<br>
then<br> System.out.println("Higher than 85.0 loanToValue: " + ($d.getLoanToValue()));<br>end<br><br> Result is:<br><br>Lower than 85.0 loanToValue: 50.0<br>Higher than 85.0 loanToValue: 100.0<br>
<br> I used the drools example code in eclipse as the skeleton for this application. The snippet is:<br><br> IndividualDecision id1 = new IndividualDecision( 100.0 );<br> IndividualDecision id2 = new IndividualDecision( 50.0 );<br>
ksession.insert( id1 );<br> ksession.insert( id2 );<br> ksession.fireAllRules();<br><br> No idea what is happening on your environment.<br><br> Edson<br><br><br><div class="gmail_quote">
2010/4/12 Ade Timi <span dir="ltr"><<a href="mailto:adeyinka.timi@nathean.com">adeyinka.timi@nathean.com</a>></span><br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<div link="blue" vlink="blue" lang="EN-GB">
<div>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;">Thanks guys for your responses. This
should be as simple as it gets, which adds to my frustration. See the following
code below:</span></font></p>
<p class="MsoNormal"><b><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy; font-weight: bold;">Java
classes:</span></font></b></p>
<p class="MsoNormal"><b><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy; font-weight: bold;">Individual</span></font></b><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> – </span></font></p>
<p class="MsoNormal" style=""><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font><b><font color="#7f0055" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(127, 0, 85); font-weight: bold;">public</span></font></b><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font><b><font color="#7f0055" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(127, 0, 85); font-weight: bold;">class</span></font></b><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> Individual {</span></font><font face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New";"></span></font></p>
<p class="MsoNormal" style="margin-left: 36pt; text-indent: 36pt;"><b><font color="#7f0055" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(127, 0, 85); font-weight: bold;">private double assetCost;</span></font></b></p>
<p class="MsoNormal" style="margin-left: 36pt; text-indent: 36pt;"><b><font color="#7f0055" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(127, 0, 85); font-weight: bold;"> </span></font></b></p>
<p class="MsoNormal" style="margin-left: 36pt; text-indent: 36pt;"><b><font color="#7f0055" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(127, 0, 85); font-weight: bold;">public</span></font></b><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font><b><font color="#7f0055" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(127, 0, 85); font-weight: bold;">void</span></font></b><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> setAssetCost(</span></font><b><font color="#7f0055" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(127, 0, 85); font-weight: bold;">double</span></font></b><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> assetCost) {</span></font><font face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New";"></span></font></p>
<p class="MsoNormal" style=""><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font><b><font color="#7f0055" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(127, 0, 85); font-weight: bold;">this</span></font></b><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;">.</span></font><font color="#0000c0" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(0, 0, 192); background: none repeat scroll 0% 0% yellow;">assetCost</span></font><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> = assetCost;</span></font><font face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New";"></span></font></p>
<p class="MsoNormal" style=""><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> }</span></font><font face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New";"></span></font></p>
<p class="MsoNormal" style=""><font face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New";"> </span></font></p>
<p class="MsoNormal" style=""><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font><b><font color="#7f0055" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(127, 0, 85); font-weight: bold;">public</span></font></b><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font><b><font color="#7f0055" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(127, 0, 85); font-weight: bold;">double</span></font></b><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> getAssetCost() {</span></font><font face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New";"></span></font></p>
<p class="MsoNormal" style=""><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font><b><font color="#7f0055" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(127, 0, 85); font-weight: bold;">return</span></font></b><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font><font color="#0000c0" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(0, 0, 192); background: none repeat scroll 0% 0% silver;">assetCost</span></font><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;">;</span></font><font face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New";"></span></font></p>
<p class="MsoNormal" style="margin-left: 36pt; text-indent: 36pt;"><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;">}</span></font><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"></span></font></p>
<p class="MsoNormal" style="text-indent: 36pt;"><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;">}</span></font></p>
<p class="MsoNormal"><b><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy; font-weight: bold;">IndividualDecision</span></font></b><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> – </span></font></p>
<p class="MsoNormal" style=""><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font><b><font color="#7f0055" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(127, 0, 85); font-weight: bold;">public</span></font></b><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font><b><font color="#7f0055" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(127, 0, 85); font-weight: bold;">class</span></font></b><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> IndividualDecision {</span></font><font face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New";"></span></font></p>
<p class="MsoNormal" style="margin-left: 36pt; text-indent: 36pt;"><b><font color="#7f0055" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(127, 0, 85); font-weight: bold;">private double loanToValue;</span></font></b></p>
<p class="MsoNormal" style="margin-left: 36pt; text-indent: 36pt;"><b><font color="#7f0055" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(127, 0, 85); font-weight: bold;"> </span></font></b></p>
<p class="MsoNormal" style="margin-left: 36pt; text-indent: 36pt;"><b><font color="#7f0055" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(127, 0, 85); font-weight: bold;">public</span></font></b><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font><b><font color="#7f0055" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(127, 0, 85); font-weight: bold;">void</span></font></b><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> setLoanToValue(</span></font><b><font color="#7f0055" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(127, 0, 85); font-weight: bold;">double</span></font></b><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> LoanToValue) {</span></font><font face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New";"></span></font></p>
<p class="MsoNormal" style=""><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font><b><font color="#7f0055" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(127, 0, 85); font-weight: bold;">this</span></font></b><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;">.</span></font><font color="#0000c0" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(0, 0, 192); background: none repeat scroll 0% 0% yellow;">loanToValue</span></font><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> = LoanToValue;</span></font><font face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New";"></span></font></p>
<p class="MsoNormal" style=""><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> }</span></font><font face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New";"></span></font></p>
<p class="MsoNormal" style=""><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font><b><font color="#7f0055" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(127, 0, 85); font-weight: bold;">public</span></font></b><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font><b><font color="#7f0055" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(127, 0, 85); font-weight: bold;">double</span></font></b><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> getLoanToValue() {</span></font><font face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New";"></span></font></p>
<p class="MsoNormal" style=""><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font><b><font color="#7f0055" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(127, 0, 85); font-weight: bold;">return</span></font></b><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font><font color="#0000c0" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(0, 0, 192); background: none repeat scroll 0% 0% silver;">loanToValue</span></font><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;">;</span></font><font face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New";"></span></font></p>
<p class="MsoNormal" style="text-indent: 36pt;"><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> }</span></font></p>
<p class="MsoNormal" style=""><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font><b><font color="#7f0055" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(127, 0, 85); font-weight: bold;">public</span></font></b><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font><b><font color="#7f0055" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(127, 0, 85); font-weight: bold;">void</span></font></b><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> calcValues(Individual ind){</span></font><font face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New";"></span></font></p>
<p class="MsoNormal" style="text-indent: 36pt;"><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font><b><font color="#7f0055" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(127, 0, 85); font-weight: bold;">this</span></font></b><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;">.</span></font><font color="#0000c0" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(0, 0, 192); background: none repeat scroll 0% 0% yellow;">loanToValue</span></font><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> = ind.getAssetCost();</span></font></p>
<p class="MsoNormal" style="text-indent: 36pt;"><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> }</span></font></p>
<p class="MsoNormal" style="text-indent: 36pt;"><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;">}</span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p class="MsoNormal"><b><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy; font-weight: bold;">Rule
Resourse – </span></font></b></p>
<p class="MsoNormal" style=""><b><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy; font-weight: bold;"> </span></font></b><b><font color="#960000" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(150, 0, 0); font-weight: bold;">import</span></font></b><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> com...Individual</span></font><font face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New";"></span></font></p>
<p class="MsoNormal" style="text-indent: 36pt;"><b><font color="#960000" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(150, 0, 0); font-weight: bold;">import</span></font></b><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> com...IndividualDecision</span></font></p>
<div class="im">
<p class="MsoNormal" style="text-indent: 36pt;"><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font></p>
<p class="MsoNormal" style=""><b><font color="#960000" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(150, 0, 0); font-weight: bold;">rule</span></font></b><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font><font color="green" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: green;">"G2 Equity
in Asset"</span></font><font face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New";"></span></font></p>
</div><p class="MsoNormal" style=""><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font><b><font color="#960000" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(150, 0, 0); font-weight: bold;">when</span></font></b><font face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New";"></span></font></p>
<p class="MsoNormal" style=""><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> $d
: IndividualDecision(loanToValue() < 85.0)</span></font><font face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New";"></span></font></p>
<p class="MsoNormal" style=""><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font><b><font color="#960000" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(150, 0, 0); font-weight: bold;">then</span></font></b><font face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New";"></span></font></p>
<p class="MsoNormal" style=""><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> System.out.println(</span></font><font color="green" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: green;">"loanToValue: "</span></font><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> + ($d.getLoanToValue()));</span></font><font face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New";"></span></font></p>
<p class="MsoNormal"><b><font color="#960000" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(150, 0, 0); font-weight: bold;">End</span></font></b></p>
<p class="MsoNormal"><b><font color="#960000" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(150, 0, 0); font-weight: bold;"> </span></font></b></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;">Hope this helps! Many Thanks again</span></font></p>
<div>
<div class="MsoNormal" style="text-align: center;" align="center"><font face="Times New Roman" size="3"><span style="font-size: 12pt;" lang="EN-US">
<hr align="center" size="2" width="100%">
</span></font></div>
<p class="MsoNormal"><b><font face="Tahoma" size="2"><span style="font-size: 10pt; font-family: Tahoma; font-weight: bold;" lang="EN-US">From:</span></font></b><font face="Tahoma" size="2"><span style="font-size: 10pt; font-family: Tahoma;" lang="EN-US">
<a href="mailto:rules-users-bounces@lists.jboss.org" target="_blank">rules-users-bounces@lists.jboss.org</a>
[mailto:<a href="mailto:rules-users-bounces@lists.jboss.org" target="_blank">rules-users-bounces@lists.jboss.org</a>] <b><span style="font-weight: bold;">On
Behalf Of </span></b>Edson Tirelli<br>
<b><span style="font-weight: bold;">Sent:</span></b> 12 April 2010 15:46<div><div></div><div class="h5"><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] Double
Handling</div></div></span></font><span lang="EN-US"></span></p>
</div><div><div></div><div class="h5">
<p class="MsoNormal"><font face="Times New Roman" size="3"><span style="font-size: 12pt;"> </span></font></p>
<p class="MsoNormal" style="margin-bottom: 12pt;"><font face="Times New Roman" size="3"><span style="font-size: 12pt;"><br>
Ade,<br>
<br>
All these errors you are seeing are totally strange, as this
is one of the simplest things the rules engine does. Are you able to isolate
that into a test case that I can run myself to take a look?<br>
<br>
Edson</span></font></p>
<div>
<p class="MsoNormal"><font face="Times New Roman" size="3"><span style="font-size: 12pt;">2010/4/12 Ade Timi <<a href="mailto:adeyinka.timi@nathean.com" target="_blank">adeyinka.timi@nathean.com</a>></span></font></p>
<div link="blue" vlink="blue">
<div>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;">This is precisely how I expect it to be expressed. When I express
in this way I get this error message:</span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p class="MsoNormal"><font face="Tahoma" size="1"><span style="font-size: 8pt; font-family: Tahoma;">BuildError:
Unable to create Field Extractor for 'loanToValue' of '[ClassObjectType
class=com.nathean.rules.IndividualDecision]' in rule 'G2 Equity in Asset'</span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;">even though it is a variable in my IndividualDecision class. I have
3 other rule files that have expression in this simple manner and they produce
no errors and are fine.</span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;">But for this, It only lets me use eval or have something like this:</span></font></p>
<div>
<p class="MsoNormal"><b><font color="#960000" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(150, 0, 0); font-weight: bold;">rule</span></font></b><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font><font color="green" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: green;">"G2 Equity in Asset"</span></font></p>
<p class="MsoNormal"><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font><b><font color="#960000" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(150, 0, 0); font-weight: bold;">ruleflow-group</span></font></b><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font><font color="green" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: green;">"goods"</span></font></p>
</div>
<p class="MsoNormal"><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font><b><font color="#960000" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(150, 0, 0); font-weight: bold;">when</span></font></b></p>
<p class="MsoNormal"><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;">
$d : IndividualDecision()</span></font></p>
<p class="MsoNormal"><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;">
Individual($d.loanToValue < 85.0)</span></font></p>
<p class="MsoNormal"><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font><b><font color="#960000" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(150, 0, 0); font-weight: bold;">then</span></font></b></p>
<div>
<p class="MsoNormal"><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;">
…</span></font></p>
<p class="MsoNormal"><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;">
</span></font><font color="olive" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: olive;">//System.out.println((Double.valueOf("85")).doubleValue());</span></font></p>
<p class="MsoNormal"><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;">
System.out.println(</span></font><font color="green" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: green;">"loanToValue:
"</span></font><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> +
($d.getLoanToValue()));</span></font></p>
</div>
<p class="MsoNormal"><b><font color="#960000" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(150, 0, 0); font-weight: bold;">End</span></font></b></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;">I understand that it is pointless having that 2<sup>nd</sup> line
in the when section, but it’s the only way it picks up the variables in
the IndividualDecision class with no errors. I don’t know why I
can’t do this with this particular rules file. I am using Eclipse. Could
there be some drools configuration issue with this file?</span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;">-A</span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<div>
<div class="MsoNormal" style="text-align: center;" align="center"><font face="Times New Roman" size="3"><span style="font-size: 12pt;" lang="EN-US">
<hr align="center" size="2" width="100%">
</span></font></div>
<p class="MsoNormal"><b><font face="Tahoma" size="2"><span style="font-size: 10pt; font-family: Tahoma; font-weight: bold;" lang="EN-US">From:</span></font></b><font face="Tahoma" size="2"><span style="font-size: 10pt; font-family: Tahoma;" lang="EN-US"> <a href="mailto:rules-users-bounces@lists.jboss.org" target="_blank">rules-users-bounces@lists.jboss.org</a>
[mailto:<a href="mailto:rules-users-bounces@lists.jboss.org" target="_blank">rules-users-bounces@lists.jboss.org</a>]
<b><span style="font-weight: bold;">On Behalf Of </span></b>Wolfgang Laun<br>
<b><span style="font-weight: bold;">Sent:</span></b> 12 April 2010 14:30</span></font></p>
<div>
<div>
<p class="MsoNormal"><font face="Tahoma" size="2"><span style="font-size: 10pt; font-family: Tahoma;" lang="EN-US"><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] Double
Handling</span></font></p>
</div>
</div>
</div>
<div>
<div>
<p class="MsoNormal"><font face="Times New Roman" size="3"><span style="font-size: 12pt;"> </span></font></p>
<p class="MsoNormal" style="margin-bottom: 12pt;"><font face="Times New Roman" size="3"><span style="font-size: 12pt;">Well, then drop
the<br>
dialect "mvel"<br>
and write the pattern as<br>
$d : IndividualDecision( loanToVal < 85.0 )<br>
<br>
There's no visible need to use mvel. <br>
<br>
Or eval: the simplest form for constraints is always best.<br>
<br>
-W<br>
<br>
</span></font></p>
<div>
<p class="MsoNormal"><font face="Times New Roman" size="3"><span style="font-size: 12pt;">2010/4/12 Ade Timi
<<a href="mailto:adeyinka.timi@nathean.com" target="_blank">adeyinka.timi@nathean.com</a>></span></font></p>
<div link="blue" vlink="blue">
<div>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;">Many thanks for the response!</span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;">Yes it fires when I use 85.0 instead, but it obviously
shouldn’t as the condition is false. My code now looks like this:</span></font></p>
<div>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p class="MsoNormal"><b><font color="#960000" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(150, 0, 0); font-weight: bold;">rule</span></font></b><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font><font color="green" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: green;">"G2 Equity in Asset"</span></font></p>
<p class="MsoNormal"><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font><b><font color="#960000" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(150, 0, 0); font-weight: bold;">ruleflow-group</span></font></b><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font><font color="green" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: green;">"goods"</span></font></p>
<p class="MsoNormal"><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font><b><font color="#960000" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(150, 0, 0); font-weight: bold;">dialect</span></font></b><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font><font color="green" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: green;">"mvel"</span></font></p>
<p class="MsoNormal"><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font><b><font color="#960000" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(150, 0, 0); font-weight: bold;">when</span></font></b></p>
</div>
<p class="MsoNormal"><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;">
$d : IndividualDecision(</span></font><b><font color="#960000" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(150, 0, 0); font-weight: bold;">eval</span></font></b><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;">($d.getLoanToValue() < 85.0))</span></font></p>
<p class="MsoNormal"><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font><b><font color="#960000" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(150, 0, 0); font-weight: bold;">then</span></font></b></p>
<p class="MsoNormal"><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;">
$d.setGoodCount($d.incGoodCount());</span></font></p>
<p class="MsoNormal"><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;">
$d.setMessage(</span></font><font color="green" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: green;">"0065: G2:
Good: Good Equity in Deal"</span></font><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;">);</span></font></p>
<p class="MsoNormal"><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;">
</span></font><font color="olive" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: olive;">//System.out.println((Double.valueOf("85")).doubleValue());</span></font></p>
<div>
<p class="MsoNormal"><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;">
System.out.println(</span></font><font color="green" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: green;">"loanToValue:
"</span></font><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> +
($d.getLoanToValue()));</span></font></p>
<p class="MsoNormal"><b><font color="#960000" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(150, 0, 0); font-weight: bold;">end</span></font></b></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
</div>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;">I still get the print output of 92000.0, which is as I expect but I
don’t expect the rule to be fired at all. The weird thing is that when I
change the condition to ‘>’ which is the true condition it never
fires! I’m at a loss as to why this is happening.</span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;">- Ade</span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<div>
<div class="MsoNormal" style="text-align: center;" align="center"><font face="Times New Roman" size="3"><span style="font-size: 12pt;" lang="EN-US">
<hr align="center" size="2" width="100%">
</span></font></div>
<p class="MsoNormal"><b><font face="Tahoma" size="2"><span style="font-size: 10pt; font-family: Tahoma; font-weight: bold;" lang="EN-US">From:</span></font></b><font face="Tahoma" size="2"><span style="font-size: 10pt; font-family: Tahoma;" lang="EN-US"> <a href="mailto:rules-users-bounces@lists.jboss.org" target="_blank">rules-users-bounces@lists.jboss.org</a>
[mailto:<a href="mailto:rules-users-bounces@lists.jboss.org" target="_blank">rules-users-bounces@lists.jboss.org</a>]
<b><span style="font-weight: bold;">On Behalf Of </span></b>Wolfgang Laun<br>
<b><span style="font-weight: bold;">Sent:</span></b> 11 April 2010 09:11<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] Double
Handling</span></font></p>
</div>
<div>
<div>
<p class="MsoNormal"><font face="Times New Roman" size="3"><span style="font-size: 12pt;"> </span></font></p>
<p class="MsoNormal" style="margin-bottom: 12pt;"><font face="Times New Roman" size="3"><span style="font-size: 12pt;">You are comparing
a double to a String ("85"). Although MVEL might convert strings to
numbers, I wouldn't use this without some cogent reason.<br>
<br>
Do you have this unexpected firing also when you use a double literal, i.e.,
85.0 ?<br>
<br>
-W</span></font></p>
<div>
<p class="MsoNormal"><font face="Times New Roman" size="3"><span style="font-size: 12pt;">2010/4/9 Ade Timi
<<a href="mailto:adeyinka.timi@nathean.com" target="_blank">adeyinka.timi@nathean.com</a>></span></font></p>
<div link="blue" vlink="purple">
<div>
<p class="MsoNormal"><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;">Hi,</span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;"> </span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;">I am new to
Drools. I am having a problem comparing 2 double values. I have a Java class
with a double attribute called loanToValue. The loanToValue is been read from
an XML file and the value is 92000.0. Based on this value I do not expect this
rule to be fired, but for some reason it does. And the print statement returns
92000.0. Does anyone know what I’m doing wrong? My rule looks as follows:</span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;"> </span></font></p>
<p class="MsoNormal"><b><font color="#960000" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(150, 0, 0); font-weight: bold;">rule</span></font></b><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font><font color="green" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: green;">"G2 Equity in Asset"</span></font></p>
<p class="MsoNormal"><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font><b><font color="#960000" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(150, 0, 0); font-weight: bold;">ruleflow-group</span></font></b><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font><font color="green" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: green;">"goods"</span></font></p>
<p class="MsoNormal"><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font><b><font color="#960000" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(150, 0, 0); font-weight: bold;">dialect</span></font></b><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font><font color="green" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: green;">"mvel"</span></font></p>
<p class="MsoNormal"><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font><b><font color="#960000" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(150, 0, 0); font-weight: bold;">when</span></font></b></p>
<p class="MsoNormal"><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;">
$d : IndividualDecision()</span></font></p>
<p class="MsoNormal"><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;">
Individual(</span></font><b><font color="#960000" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(150, 0, 0); font-weight: bold;">eval</span></font></b><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;">($d.getLoanToValue()
< </span></font><font color="green" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: green;">"85"</span></font><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;">))</span></font></p>
<p class="MsoNormal"><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;"> </span></font><b><font color="#960000" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(150, 0, 0); font-weight: bold;">then</span></font></b></p>
<p class="MsoNormal"><font color="black" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: black;">
System.out.println("loanToValue: " + ($d.getLoanToValue()));</span></font></p>
<p class="MsoNormal"><b><font color="#960000" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(150, 0, 0); font-weight: bold;">end</span></font></b></p>
<p class="MsoNormal"><b><font color="#960000" face="Courier New" size="2"><span style="font-size: 10pt; font-family: "Courier New"; color: rgb(150, 0, 0); font-weight: bold;"> </span></font></b></p>
<p class="MsoNormal"><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;">Thanks,</span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;">Ade</span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;"> </span></font></p>
<p class="MsoNormal"><b><font color="gray" face="Arial" size="1"><span style="font-size: 8pt; font-family: Arial; color: gray; font-weight: bold;" lang="EN-IE">Adeyinka Timi</span></font></b><font color="gray" face="Arial" size="1"><span style="font-size: 8pt; font-family: Arial; color: gray;" lang="EN-IE"> </span></font><font color="blue" face="Arial" size="1"><span style="font-size: 8pt; font-family: Arial; color: blue;" lang="EN-IE">|</span></font><font color="#ffaf5f" face="Arial" size="1"><span style="font-size: 8pt; font-family: Arial; color: rgb(255, 175, 95);" lang="EN-IE"> </span></font><font color="#999999" face="Arial" size="1"><span style="font-size: 8pt; font-family: Arial; color: rgb(153, 153, 153);" lang="EN-IE">Technical Supprt</span></font><font color="gray" face="Arial" size="1"><span style="font-size: 8pt; font-family: Arial; color: gray;" lang="EN-IE"> </span></font><font color="blue" face="Arial" size="1"><span style="font-size: 8pt; font-family: Arial; color: blue;" lang="EN-IE">|</span></font><font color="gray" face="Arial" size="1"><span style="font-size: 8pt; font-family: Arial; color: gray;" lang="EN-IE"> <b><span style="font-weight: bold;">Nathean
Technologies Ltd</span></b></span></font></p>
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<br clear="all">
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-- <br>
Edson Tirelli<br>
JBoss Drools Core Development<br>
JBoss by Red Hat @ <a href="http://www.jboss.com" target="_blank">www.jboss.com</a></span></font></p>
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<br></blockquote></div><br><br clear="all"><br>-- <br> Edson Tirelli<br> JBoss Drools Core Development<br> JBoss by Red Hat @ <a href="http://www.jboss.com">www.jboss.com</a><br>