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<DIV><SPAN STYLE="FONT-SIZE: 7.5pt; COLOR: gray; mso-bidi-font-family: Arial"><FONT COLOR="gray" FACE="Arial" SIZE="1"><SPAN STYLE="FONT-SIZE: 14pt; FONT-FAMILY: 'Arial','sans-serif'"><FONT SIZE="2"><FONT COLOR="#000000" FACE="Times New Roman" SIZE="3"><FONT FACE="Arial" SIZE="1"><FONT SIZE="2">
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<p class=MsoNormal>Hi,<o:p></o:p></p>
<p class=MsoNormal>I have a Map object that maps User product type experience
with the level of expertise. I am trying to use accumulate in my rule <o:p></o:p></p>
<p class=MsoNormal>Such that if the user has experience with certain product
then it gets the experience level and sums it up . <o:p></o:p></p>
<p class=MsoNormal>I am using Drools 5.1 , mvel 2, spring batch 2.x.<o:p></o:p></p>
<p class=MsoNormal>This is my rule :-<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal style='text-autospace:none'><b><span style='font-size:10.0pt;
font-family:"Courier New";color:#960000'>rule</span></b><span style='font-size:
10.0pt;font-family:"Courier New";color:black'> </span><span style='font-size:
10.0pt;font-family:"Courier New";color:green'>"Insert Product Types"</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><b><span style='font-size:10.0pt;
font-family:"Courier New";color:#960000'>dialect</span></b><span style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><span style='font-size:10.0pt;font-family:"Courier New";color:green'>"mvel"</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><b><span style='font-size:10.0pt;
font-family:"Courier New";color:#960000'>salience</span></b><span style='font-size:10.0pt;font-family:"Courier New";color:black'> 1800</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><b><span style='font-size:10.0pt;
font-family:"Courier New";color:#960000'>when</span></b><span style='font-size:
10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> </span><b><span style='font-size:10.0pt;font-family:"Courier New";color:#960000'>eval</span></b><span style='font-size:10.0pt;font-family:"Courier New";color:black'> (</span><b><span style='font-size:10.0pt;font-family:"Courier New";color:#960000'>true</span></b><span style='font-size:10.0pt;font-family:"Courier New";color:black'>)</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><b><span style='font-size:10.0pt;
font-family:"Courier New";color:#960000'>then</span></b><span style='font-size:
10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> ProductType p1 = </span><b><span style='font-size:10.0pt;font-family:"Courier New";color:#960000'>new</span></b><span style='font-size:10.0pt;font-family:"Courier New";color:black'> ProductType();</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> p1.setName(</span><span style='font-size:10.0pt;font-family:"Courier New";color:green'>"P1"</span><span style='font-size:10.0pt;font-family:"Courier New";color:black'>);</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> ProductType p2 = </span><b><span style='font-size:10.0pt;font-family:"Courier New";color:#960000'>new</span></b><span style='font-size:10.0pt;font-family:"Courier New";color:black'> ProductType();</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> p2.setName(</span><span style='font-size:10.0pt;font-family:"Courier New";color:green'>"P2"</span><span style='font-size:10.0pt;font-family:"Courier New";color:black'>);</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> </span><b><span style='font-size:10.0pt;font-family:"Courier New";color:#960000'>insert</span></b><span style='font-size:10.0pt;font-family:"Courier New";color:black'> (p1);</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> </span><b><span style='font-size:10.0pt;font-family:"Courier New";color:#960000'>insert</span></b><span style='font-size:10.0pt;font-family:"Courier New";color:black'> (p2);</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><b><span style='font-size:10.0pt;
font-family:"Courier New";color:#960000'>end</span></b><span style='font-size:
10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><b><span style='font-size:10.0pt;
font-family:"Courier New";color:#960000'>rule</span></b><span style='font-size:
10.0pt;font-family:"Courier New";color:black'> </span><span style='font-size:
10.0pt;font-family:"Courier New";color:green'>"Product Class
Experience"</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><b><span style='font-size:10.0pt;
font-family:"Courier New";color:#960000'>dialect</span></b><span style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><span style='font-size:10.0pt;font-family:"Courier New";color:green'>"mvel"</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><b><span style='font-size:10.0pt;
font-family:"Courier New";color:#960000'>salience</span></b><span style='font-size:10.0pt;font-family:"Courier New";color:black'> 1600</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><b><span style='font-size:10.0pt;
font-family:"Courier New";color:#960000'>when</span></b><span style='font-size:
10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> ProductType ($name :
name)</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> $total : Number () </span><b><span style='font-size:10.0pt;font-family:"Courier New";color:#960000'>from</span></b><span style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><b><span style='font-size:10.0pt;font-family:"Courier New";color:#960000'>accumulate</span></b><span style='font-size:10.0pt;font-family:"Courier New";color:black'> (</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>
Client (productExperience.keySet </span><b><span style='font-size:10.0pt;
font-family:"Courier New";color:#960000'>contains</span></b><span style='font-size:10.0pt;font-family:"Courier New";color:black'> $name, $score :
productExperience[$name]),</span><span style='font-size:10.0pt;font-family:
"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>
sum($score))</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> </span><b><span style='font-size:
10.0pt;font-family:"Courier New";color:#960000'>then</span></b><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> System.out.println (</span><span style='font-size:10.0pt;font-family:"Courier New";color:green'>"Product
Type Score "</span><span style='font-size:10.0pt;font-family:"Courier New";
color:black'> + $total);</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Courier New";
color:#960000'><o:p> </o:p></span></b></p>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Courier New";
color:#960000'>End<o:p></o:p></span></b></p>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Courier New";
color:#960000'><o:p> </o:p></span></b></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>When
the rule is fired I get the attached exception .<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>Any
suggestions / help will be great.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>Regards,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>Akash<o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
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