[rules-users] Decision Table column testing for exists

[Wolfgang Laun]

n:Number((n.intValue()>0)==$param) from accumulate( FeV1(), count(1) )

-W

On 20/06/2012, Hrumph <Herman.Post at imail.org> wrote:
> Hi.   I'm trying to figure out how to express a Condition that does the
> following:
>
> Column name:   FeV1 exists
> Possible values:   true, false, n/a
>
> I wish to test for the existence of an FeV1 fact and have a different
> condition in the rule generated, as follows:
>
> true, generates 'exists FeV1()'
> false, generates 'not FeV1()'
> n/a, generates nothing
>
> Is there some way to do this?
>
> Thanks,
>
> Herm
>
>
>
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