I'd assume the intention was to use the support mvel provides for abbreviating expressions - so it is intended to be interpreted as shorthand for 20 <= price && price < 30. I'm not 100% sure scanning through the docs whether this form is correct or not.
Thomas > -----Original Message----- > From: [email protected] [mailto:rules-users- > [email protected]] On Behalf Of Wolfgang Laun > Sent: 05 February 2012 12:22 > To: Rules Users List > Cc: Rules Dev List > Subject: Re: [rules-users] How to write rules in two fact's fields? > > In most programming languages the result of (e.g.) an integer comparison > 20 <= price > is a value of a different type, i.e., boolean, with values "true" or "false". > (You > have heard this at some time, right?) Consequently, the comparison of a > boolean with an integer > true < 30 > depends on whether the language tolerates it, and if so, how that result is > defined. > > IT IS A BUG THAT DROOLS TOLERATES (BUT DOES NOT DEFINE) SUCH > "MULTIPLE" COMPARISONS BUT DOES NOT FLAG THEM AS AN ERROR OR > IMPLEMENT THEM IN SOME WAY. (Tested with 5.3.0 Final.) > > This means that you'll have to rwrite your constraints using && or ||, as > appropriate. > > -W > > > > > On 05/02/2012, shanmuga <[email protected]> wrote: > > Hi, > > I want to know, how to write rules in two fact's fields? > > > > I used two facts, it will take AND condition or OR condition in > > between the two facts. > > > > Please check my code.... > > > > package Project > > import com.sample.Person; > > import com.sample.Price; > > > > rule "rule_Name" > > when > > per:*Person*(50 <= age < 100, 10000 <= income < 50000, > > occupation == "Business", category == "Military", location == > > "Bangalore", custype == > > "Individual") > > pri:*Price*((20 <= price < 30) || price == 1) > > then > > System.out.println("Success"); > > end > > > > > > The both fact values are satisfy means, what is the output? > > > > I got output, even the *Price* fact's value is wrong. (price == 100) > > > > Please slove my problem........!!!! > > > > -- > > View this message in context: > > http://drools.46999.n3.nabble.com/How-to-write-rules-in-two-fact-s-fie > > lds-tp3717063p3717063.html Sent from the Drools: User forum mailing > > list archive at Nabble.com. > > _______________________________________________ > > rules-users mailing list > > [email protected] > > https://lists.jboss.org/mailman/listinfo/rules-users > > > _______________________________________________ > rules-users mailing list > [email protected] > https://lists.jboss.org/mailman/listinfo/rules-users ************************************************************************************** This message is confidential and intended only for the addressee. If you have received this message in error, please immediately notify the [email protected] and delete it from your system as well as any copies. The content of e-mails as well as traffic data may be monitored by NDS for employment and security purposes. To protect the environment please do not print this e-mail unless necessary. NDS Limited. Registered Office: One London Road, Staines, Middlesex, TW18 4EX, United Kingdom. A company registered in England and Wales. Registered no. 3080780. VAT no. GB 603 8808 40-00 ************************************************************************************** _______________________________________________ rules-dev mailing list [email protected] https://lists.jboss.org/mailman/listinfo/rules-dev
