[rules-users] Some serious problems while authoring rules

[Natraj Gudla]

Yes, infact i expected both the conditions to work against the same object
in the working memory? Is it not possible?
For this scenario, drools has not been allowing me to do a comparison
amongst two attributes of the same class. When i do so, it complains of not
being to resolve the variable.
Some thing like a1 > a2 does not work. I am forced to create a declaration
and then use it to compare. If i do so, the run time thing fails.

How do i get around to compare two attributes from the same class. Something
like

a1 > a2 or say a1 > (a2 * 1.5)

Thanks
Natraj


On 7/19/07, Mark Proctor <mproctor at codehaus.org> wrote:
>
> You do understand that what you have there is a cross product, you'll need
> two objects to match against that - were you expecting this to wokr against
> and on the same single EMIAgainstProperty object?
>
> Mark
> Natraj Gudla wrote:
>
>  I am facing some serious blocking issues while writing few rules. In the
> rule below, a1, a2 are Double objects. When i have the first statement in
> the rule " EMIAgainstProperty( obj : a1 )", the rule does not fire....when i
> comment and re phrase the second line as emi : EMIAgainstProperty( a2 >= (
> *new* Double(10* 1.5 )) ), the rule is fired.
>
> Why is the first line making the rule not to fire. I have reported a
> similar problem yesterday, but could not find a resolution. On the other
> hand, i am unable to refer a1 directly to say a1.doubleValue () in the
> second line, it throws up and error. Any help??? What is the way out?
> *
>
> rule
> *"Test" *when*
>
> EMIAgainstProperty( obj : a1 )
>
> emi : EMIAgainstProperty( a2 >= (
> *new* Double(obj.doubleValue() * 1.5 )) ) *then*
>
> System.out.println(
> " Passed ");*
>
> end
> *
>
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