[rules-users] Inconsistent behavior of a rule

[Wolfgang Laun]

On 29/11/2012, dec <roni.frantchi at gmail.com> wrote:
> See attached DRL. input is: condFt="supportedValue"
> I have a rule with the following 'when' part which will not hit, though it
> should:
>
>                 $supportFT: supportFT()
>                 condFT(value == $supportFT.getValue())
>                 $conclusion: testInferred()
>
> while the following one will hit, even though the two seems equivalent:
>
>                 $supportFT: supportFT(value == null || value !=null)
>                 condFT(value == $supportFT.getValue())
>                 $conclusion: testInferred()
>

This could be due to a misuse, e.g., a change of a fact without update/modify.


> another one that seems equivalent that will hit:
>                 $supportFT: supportFT()
>                 supportFT(value == $condFt.getValue())
>                 $conclusion: testInferred()
>

This is either incomplete or illegal: undeclared $condFt.

-W


> Not sure if it is indeed a bug, or a misuse on my part,
> but I can't understand why the first rule will not hit. And even stranger,
> why the second and third which seems the same will.
>
> testInferred3.drl
> <http://drools.46999.n3.nabble.com/file/n4021003/testInferred3.drl>
>
>
>
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