Re: [rules-users] Using global in LHS

Hi, there are two issues: - the left side of contains needs to be filed of Item (it also needs to be a Collection or array) - in your case you should use "memberOf" to check if a field (catId) is a member of a Collection or array. see the docs for more info (6.5.2.1.1.3.1. Operators) However if you're going to use an array as your global, you will run into a CCE, because an array doesn't implement the Collection interface [1], [2]. I'm not sure if this is a bug in drools or an expected "constraint", hence a bug in the docs. Anyway, your safe using a List. Cheers, Jarek [1] drools-core/src/main/java/org/drools/base/evaluators/BaseMemberOfEvaluator.java (evaluate()) [2] drools-core/src/main/java/org/drools/spi/FieldValue.java Markus Helbig wrote: > > Hi, > > again a question, any body had success using globals in LHS? > > Following DSL > > [condition][]is a Item=Item() > [condition][]-is of type Advertisment=advertisment contains catId > > > rule > when > $pli: is a Item > - is of type Advertisment > then > // do whatever you want > end > > catId is a member of Item > advertisment is a Integer[] array set as global > > comiling ends with: > > Unable to create Field Extractor for 'advertisment' of '[ClassObjectType > > It works fine if advertisment is a member of Item, but i want to have > it as global ... > > Cheers > > Markus > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users