attrA = "foo"

Hi, I am a DROOLS newbie. I apologize if this has been asked before. This rule (R1) is not syntactically correct in the Eclipse .DRL view. rule "R1" when Message( ((attrA = "foo" && _attrB == "bar") || AttrA== "foo") //syntax error (curious, why?) ) then System.out.println( "R1 pattern-matched Message. DROOLS Consequence executing now." ); end but R2 is syntactically correct = rule "R2" when Message( attrA = "foo" && _attrB == "bar") || Message (AttrA== "foo") then System.out.println( "R2 pattern-matched Message. DROOLS Consequence executing now." ); end In Drools 5.2, are R1 and R2 semantically equivalent? View this message in context: semantically equivalent DROOLS L-value expressions? Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

This still shows R1 as a syntax error in Eclipse .DRL view (Drools 5.2). R2 has no syntax error. Are R1 and R2 semantically the same? rule "R1" //XLS Item=7 when Message( ((businessDayConvention == "foo" && _calendar == "bar") || _calendar== "foo") //syntax error ) then System.out.println( "RULE pattern-matched Message. DROOLS Consequence executing now." ); end BuildError: Unable to Analyse Expression businessDayConvention == "foo" && _calendar == "bar" || _calendar == "foo": [Error: no such identifier: _calendar] [Near : {... vention == "foo" && _calendar == "bar" || _calenda ....}] ^ [Line: 1, Column: 35] rule "R2" //XLS Item=7 when Message (businessDayConvention != "foo" && _calendar == "bar") || Message (businessDayConvention == "foo") then System.out.println( "RULE pattern-matched Message. DROOLS Consequence executing now." ); end -- View this message in context: http://drools.46999.n3.nabble.com/semantically-equivalent-DROOLS-L-value-... Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

Thanks. I'm sure that it is my lack of DROOLs maturity that leaves me kind of bewildered at the need to re-factor R2 as R2a and R2b. Frankly, I'm even a little confused as to why R1 is not syntactically correct (it would be my "newbie-preferred" way of expressing my understanding of what I want the rule to "say"). Will play with and exercise your R2 re-factor recommendation, I'm willing to put in the DROOLs work until I "get it". Thanks again. Ben public class Message { private String businessDayConvention; private String _itemNumber; private String _clearingHouse; private String _productType; private String _currency; private String _upfrontFeeCurrency; private BigInteger _upfrontFeePaymentDate; private String _upfrontFeeSettlementConvention; private String _settlementConvention; private BigInteger _maturity; private BigDecimal _notional; private String _paymentFrequency; private BigInteger _rollDate; private String _calendar; private BigInteger _minimumEffectiveDate2Backload; private String _stubMinimumPeriod; private BigInteger _fixingRateDate; private String _initialStubRate; // rest is Eclipse generated gettr/settr methods } -- View this message in context: http://drools.46999.n3.nabble.com/semantically-equivalent-DROOLS-L-value-... Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users