[rules-users] Re: 4.0 Language Updates

[Edson Tirelli]

   Ronald,

   Yes, this is one way (I would say probably the preferred way) of doing
it.
   For BigDecimals, drools will use equals() method.

   Look at the BigDecimalFactory class for details.

   []s
   Edson

2007/7/9, Ronald R. DiFrango <ron.difrango at gmail.com>:
>
> OK, I think I found it and here is what the rule could look like:
>
> rule "Repayment Code Requires Approval"
>     salience 60
>
>     when
>         repaymentCode : RepaymentCode( code == "MD", matchApprv == "Y" )
>         mdOutput : ModelDiscrepancyOutput( $amt1 : sumRTVQty, sumCmAndRnr
> == $amt1)
>     then
>         System.out.println("Repayment Code Requires Approval");
>         processMDAdjustments(drools.getWorkingMemory ().getQueryResults(
> "MD Adjustments" ), StatusConstants.APPROVAL);
>         System.out.println("mdOutput: " + mdOutput);
> end
>
> Now my question is, how does Drools handle these objects and the
> comparison because the underlying objects are BigDecimal?
>
> On 7/9/07, Ronald R. DiFrango <ron.difrango at gmail.com> wrote:
> >
> > All,
> >
> > I have the following rule:
> >
> > rule "Repayment Code Requires Approval"
> >     salience 60
> >
> >     when
> >         repaymentCode : RepaymentCode( code == "MD", matchApprv == "Y" )
> >
> >         mdOutput : ModelDiscrepancyOutput( $amt1 : sumRTVQty, $amt2 :
> > sumCmAndRnr)
> >         eval($amt1.doubleValue() == $amt2.doubleValue())
> >     then
> >         System.out.println("Repayment Code Requires Approval");
> >         processMDAdjustments(drools.getWorkingMemory().getQueryResults(
> > "MD Adjustments" ), StatusConstants.APPROVAL);
> >         System.out.println("mdOutput: " + mdOutput);
> > end
> >
> > If I remember correctly, there was going to be an update to the rules
> > language that would allow me to eliminate the eval.  Is this true and if so
> > what is the syntax that accomplishes this?
> >
> > Ron
> >
>
>
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>


-- 
  Edson Tirelli
  Software Engineer - JBoss Rules Core Developer
  Office: +55 11 3529-6000
  Mobile: +55 11 9287-5646
  JBoss, a division of Red Hat @ www.jboss.com
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