[rules-users] How to use not operator in drool.
Mark Proctor
mproctor at codehaus.org
Thu Sep 13 05:22:58 EDT 2007
Tim.Nguyen at expeditors.com wrote:
> I thought when you use eval, it is Java, not mvel. So i think this should
> work: eval (! (Map (.....
>
>
eval will use the language of dialect you specify for the rule.
> Tim
>
>
>
>
> Gaurav2007
> <gaurav.a.joshi at c
> apgemini.com> To
> Sent by: rules-users at lists.jboss.org
> rules-users-bounc cc
> es at lists.jboss.or
> g Subject
> [rules-users] How to use not
> operator in drool.
> 09/12/2007 08:49
> AM
>
>
> Please respond to
> Rules Users List
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>
> Hi ALL,
>
> I am using drool4.0.1 in my application i am able to use IN,OR,AND operator
> but i am facing problem in using not operator.
>
> my requirement of not operator is just like a not gate.
>
> the way i am using it is :
>
> eval(not((Map( this["city"] !="mumbai"))||(Map( this["city"] =="delhi"))))
>
>
> so can you please help me out to solve this problem:
> should i use not operator or some thing else in drool.
>
> Thanks,
>
>
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