[rules-users] Double Handling

[Wolfgang Laun]

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 at 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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