Many thanks for the response! 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:
rule "G2 Equity in Asset" ruleflow-group "goods" dialect "mvel" when $d : IndividualDecision(eval($d.getLoanToValue() < 85.0)) then $d.setGoodCount($d.incGoodCount()); $d.setMessage("0065: G2: Good: Good Equity in Deal"); //System.out.println((Double.valueOf("85")).doubleValue()); System.out.println("loanToValue: " + ($d.getLoanToValue())); end 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. - Ade _____ From: rules-users-boun...@lists.jboss.org [mailto:rules-users-boun...@lists.jboss.org] On Behalf Of Wolfgang Laun Sent: 11 April 2010 09:11 To: Rules Users List Subject: Re: [rules-users] Double Handling 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. Do you have this unexpected firing also when you use a double literal, i.e., 85.0 ? -W 2010/4/9 Ade Timi <adeyinka.t...@nathean.com> Hi, 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: rule "G2 Equity in Asset" ruleflow-group "goods" dialect "mvel" when $d : IndividualDecision() Individual(eval($d.getLoanToValue() < "85")) then System.out.println("loanToValue: " + ($d.getLoanToValue())); end Thanks, Ade Adeyinka Timi | Technical Supprt | Nathean Technologies Ltd Registered Office 3 Lyncon Court, IDA Science & Technology Park, Snugborough Road, Blanchardstown, Dublin 15, Ireland T +353 1 685 3001 | VOIP 076 615 1117 | E adeyinka.t...@nathean.com | <http://www.nathean.com/> <http://www.nathean.com> www.nathean.com Incorporated in Ireland, No. 339972 The information appearing in this email and any files transmitted with it is confidential and may not be reproduced, modified, distributed, transmitted, displayed, published or broadcast without the prior written permission of Nathean Technologies Ltd. It is intended solely for the use of the addressee(s). Nathean Technologies Ltd, its directors, officers and employees do not accept liability for any loss or damage of any nature howsoever arising pertaining to the use of information appearing in this email and/or any files transmitted with it. Whilst this email has been checked for the presence of computer viruses, Nathean Technologies Ltd does not, except as required by law, represent, warrant and/or guarantee that the integrity of this communication has been maintained nor that the communication is free of errors, viruses, interception or interference. _______________________________________________ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
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