On Mon, Nov 16, 2009 at 7:16 AM, Greg Barton <[email protected]> wrote:
> The answer to both questions is basically the same: use the "this"
> reference.
>
> rule CheckValidBinNumber
> when
> $br:BillingRecord(cardNo!=null || cardNo!="")
>
This part, taken from the original mail, looks suspicious to me: if
cardNo==null, the 2nd term is evaluated and throws a NPE.
$valid: Boolean(this == false) from checkValidity($br.cardNo)
> then
> error(BillingRecordHelper.BIN_NO_INVALID_ERROR,log);
> end
>
>
It would be interesting to learn whether a single CE
$br : BillingRecord( cardNo : cardNo, eval( checkNotNullValid( cardNo ) )
with
boolean checkNotNullInvalid(Sring cardNo){
return cardNo != null && cardNo != "" && ! checkValidity( cardNo );
}
OR
$br : BillingRecord( cardNo : cardNo !=null && !="", eval( !
checkValidity(cardNo) ) )
wouldn't be (slightly) more efficient.
-W
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