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.timi@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

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