[rules-users] Re: 4.0 Language Updates

[Ronald R. DiFrango]

Thanks Edson!

Does the equals methods compare the underlying values or the object
references?

On 7/9/07, Edson Tirelli <tirelli at post.com> wrote:
>
>    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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> > rules-users at lists.jboss.org
> > https://lists.jboss.org/mailman/listinfo/rules-users
> >
> >
>
>
> --
>   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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