The 'and' is redundant, it's implicitely implied for top level patterns $rt: ResourceType( ) $perm: ResourceTypePermission( accessType != AccessType.READ ) from $rt.permissions com.christws.entities.Role($rolename: name) from $perm.role Role(name == $rolename) Can you make a small self contained test and upload it as a jira for us. Thanks Mark Andrew Robinson wrote: > I have an enumeration called AccessType: > public enum AccessType > { > READ, > UPDATE, > DELETE > } > > In a rule, I have: > $rt: ResourceType( ) > and $perm: ResourceTypePermission( accessType != AccessType.READ > ) from $rt.permissions > and com.christws.entities.Role($rolename: name) from $perm.role > and Role(name == $rolename) > > I am getting the following exception: > java.lang.NullPointerException > at org.drools.base.com.christws.entities.ResourceTypePermission7859095$getAccessType.getValue(Unknown > Source) > at org.drools.base.ClassFieldExtractor.getValue(ClassFieldExtractor.java:127) > at org.drools.base.evaluators.ObjectFactory$ObjectNotEqualEvaluator.evaluate(ObjectFactory.java:175) > at org.drools.rule.LiteralRestriction.isAllowed(LiteralRestriction.java:61) > at org.drools.rule.LiteralConstraint.isAllowed(LiteralConstraint.java:82) > at org.drools.reteoo.FromNode.assertTuple(FromNode.java:73) > at org.drools.reteoo.SingleTupleSinkAdapter.propagateAssertTuple(SingleTupleSinkAdapter.java:20) > at org.drools.reteoo.JoinNode.assertObject(JoinNode.java:149) > at org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:22) > at org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:153) > at org.drools.reteoo.Rete.assertObject(Rete.java:177) > at org.drools.reteoo.ReteooRuleBase.assertObject(ReteooRuleBase.java:192) > at org.drools.reteoo.ReteooWorkingMemory.doInsert(ReteooWorkingMemory.java:71) > at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:886) > at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:858) > at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:659) > at org.jboss.seam.security.RuleBasedIdentity.hasPermission(RuleBasedIdentity.java:143) > at org.jboss.seam.security.Identity.checkPermission(Identity.java:474) > > The accessType is not null (checked with the debugger). Do you know > why I would be getting this? If it matters, the getAccessType method > and the accessType field are defined in an abstract super class of > ResourceTypePermission (ResourceTypePermission extends RolePermission > extends Permission which has the field) > > drools version 4.0.3 > > -Andrew > _______________________________________________ > 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