Don'ing a Map-Based Fact Loses the Fact --------------------------------------- Key: DROOLS-1654 URL: https://issues.jboss.org/browse/DROOLS-1654 Project: Drools Issue Type: Bug Components: core engine Affects Versions: 7.0.0.Final Environment: * Alpine Linux (in a Docker container) * Oracle JDK 8 * Drools 7.0.0.Final * Spring Boot v1.5.4.RELEASE (though testing without any Spring) Reporter: KimJohn Quinn Assignee: Mario Fusco Labels: traits Attachments: TraitDonningTest.java, traits-with-class.drl, traits-with-maps.drl, traits-with-model.drl, traits.drl It appears that after don'ing the trait the map-based fact it is proxying disappears (or gets retracted). There does not seem to be any issue using the trait properties to access the model properties. We are trying to use the model, mostly for constraints and updates, then within the rules apply and use traits to give us a stronger-typed fact and easier rule constraining.