[rules-users] Mvel autoboxing math

[Mark Proctor]

Joe White wrote:
>
> The drl test case below illustrates a problem with math inside of 
> drools when using the mvel dialect. When using autoboxing the order of 
> operations (and parens)  are not respected. This is using drools 5.0M1 
> and mvel-2.0-dp4.jar. The correct answer is 80 and the answer provided 
> with autoboxing in the mvel dialect is 100.
>
>  
>
> I'm uncertain of how to create a viable test case in pure mvel to add 
> it to their jira. Any help is appreciated,
>
Drop in the newer MVEL, I believe this is fixed - if it's not open a 
JIRA over at MVEL.
http://mvel.codehaus.org/
>
>  
>
> Thanks,
>
>  
>
> Joe
>
>  
>
>  
>
> *package* test;
>
>  
>
> *dialect* "mvel"
>
>  
>
> *rule* "TestRule"
>
>       *when*
>
>       *then*
>
>            
>
>             *double* value=(2**new* Double("50"))-10-10;
>
>             System.out.println(value);
>
>            
>
>             *double* valueTwo=(2*50)-10-10;
>
>             System.out.println(valueTwo);
>
> *End*
>
> * *
>
> *RESULTS*
>
> Wrong = 100.0
>
> Right = 80.0
>
> ------------------------------------------------------------------------
>
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