[jboss-jira] [JBoss JIRA] Created: (JBRULES-1058) nested accessors with Sets - "not contains" is not a valid operator for MVEL

[Mark McNally (JIRA)]

nested accessors with Sets - "not contains" is not a valid operator for MVEL
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                 Key: JBRULES-1058
                 URL: http://jira.jboss.com/jira/browse/JBRULES-1058
             Project: JBoss Rules
          Issue Type: Bug
      Security Level: Public (Everyone can see)
          Components: Drl Parser/Builder
    Affects Versions:  4.0.0.GA
            Reporter: Mark McNally
         Assigned To: Mark Proctor


Following does not work:

		rule StateMatch
			when
			$ca:CandidateAssociation(nurseDetails.stateLicensures excludes patientDetails.state  )			
			then 	
				retract( $ca );
		end
		
		
		public class CandidateAssociation {
			private PatientDetails patientDetails;
			private NurseDetails   nurseDetails;
			private int overlapHours;
		
			public CandidateAssociation( PatientDetails patientDetails, NurseDetails nurseDetails) {
				super();
				this.patientDetails = patientDetails;
				this.nurseDetails = nurseDetails;
				overlapHours = participantDetails.getNumberOverlapHourCnt(nurseDetails);
			}
		    [...]
		}
		
		public class NurseDetails {
			private Set stateLicensures = new HashSet();
			[...]
		}
		public class PatientDetails {
			private String state;
			[...]
		}

Edson suggested that the problem is that "not contains" is not a valid operator for MVEL. 

Also Noticed that the following workaround did not work:

		rule State
		    dialect "mvel"
			when
		            $ca:CandidateAssociation( eval ( ! nurseDetails.stateLicensures.contains( patientDetails.state ) ) )
			then 	
		  	    retract( $ca );
		end
		
		This produced this Exception:
		org.drools.rule.InvalidRulePackage: Unable to determine the used declarations : [Rule name=State, agendaGroup=MAIN, salience=0, no-loop=false]
	        at org.drools.rule.Package.checkValidity(Package.java:408)
	        at org.drools.common.AbstractRuleBase.addPackage(AbstractRuleBase.java:288)
	        at [...]



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