Re: [rules-users] Please help - losing hair

I think you should use dialect "mvel" when accessing the nested accessors. and I had some trouble with "mvel" dialect in 4M2 release. Please let me know if it works for you.. Thanks, Manjax23 Richard Hoberman wrote: > I'm using Drools 4 (M2), which is supposed to support nested accessors* > > This works: when Claim( submissionInfo == null), but not this: when > Claim( submissionInfo.date == null) > > Rule file, SubmissionInfo.java and exception are below. > > What am I missing? > > Richard > > > > > * See > http://article.gmane.org/gmane.comp.java.drools.user/8079/match=nested+pr..., > which states "Support to nested accessors, property navigation and > simplified collection, arrays and maps syntax" > > Rule File > > --------------------------------------------------------------------------------------- > package mvanamibia.claim; > > import java.lang.Object; > import java.lang.String; > import java.lang.Double; > import java.util.Date; > import java.util.List; > import java.util.ArrayList; > import com.sadalbari.mvanamibia.beans.Claim; > import com.sadalbari.mvanamibia.beans.Mandate; > import com.sadalbari.mvanamibia.beans.SubmissionInfo; > import com.sadalbari.mvanamibia.inspector.ClaimEvaluation; > > global ClaimEvaluation evaluation; > > rule "hasDateReceived" > > when > Claim( submissionInfo.date == null ) > then > evaluation.getFailures().add("missing: date received"); > end > > ----------------------------------------------------------------------------------- > > Exception > ----------------------------------------------------------------------------------- > org.drools.rule.InvalidRulePackage: [19,23]: unknown:19:23 mismatched > token: [@137,471:471='.',<69>,19:23]; expecting type RIGHT_PAREN > at org.drools.rule.Package.checkValidity(Package.java:368) > at > org.drools.common.AbstractRuleBase.addPackage(AbstractRuleBase.java:250) > at > com.sadalbari.mvanamibia.model.UnregisteredClaimValidationTest.setupWorkingMemory(UnregisteredClaimValidationTest.java:33) > at > com.sadalbari.mvanamibia.model.UnregisteredClaimValidationTest.testMandateClaim(UnregisteredClaimValidationTest.java:56) > ... Removed 22 stack frames > FAILED: testEmptyClaim > org.drools.rule.InvalidRulePackage: [19,23]: unknown:19:23 mismatched > token: [@137,471:471='.',<69>,19:23]; expecting type RIGHT_PAREN > at org.drools.rule.Package.checkValidity(Package.java:368) > at > org.drools.common.AbstractRuleBase.addPackage(AbstractRuleBase.java:250) > at > com.sadalbari.mvanamibia.model.UnregisteredClaimValidationTest.setupWorkingMemory(UnregisteredClaimValidationTest.java:33) > at > com.sadalbari.mvanamibia.model.UnregisteredClaimValidationTest.testEmptyClaim(UnregisteredClaimValidationTest.java:42) > ... Removed 22 stack frames > > > ------------------------------------------------------ > SubmissionInfo (relevant bits) > > public class SubmissionInfo implements Serializable { > > private Date date; > > public Date getDate() { > return date; > } > > public void setDate(Date date) { > this.date = date; > } > > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > > >