On Mon, Nov 16, 2009 at 7:16 AM, Greg Barton <greg_bar...@yahoo.com> 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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