[jboss-jira] [JBoss JIRA] (JBRULES-3317) Planner should support a null planning value

Planner should support a null planning value -------------------------------------------- Key: JBRULES-3317 URL: https://issues.jboss.org/browse/JBRULES-3317 Project: Drools Issue Type: Feature Request Security Level: Public(Everyone can see) Components: drools-planner Reporter: Geoffrey De Smet Assignee: Geoffrey De Smet Fix For: 5.4.0.CR1 Several users on the user mailing list have run into this, especially for task assignment use cases. Example use case: @PlanningEntity TaskAssignment assigns a Task to a @PlanningVariable Employee There are so many Tasks, that's better to not assign some Tasks for now. Current workaround: Make a Employee representing NONE, which is the only Employee instance that returns true on employee.isNone() and the score rules are written to deal with that. Technical difficulty to fix: The @PlanningVariable(s) of a @PlanningEntity with planning value null are considered to be "uninitialized". Partial uninitialized solution detection is fundamental for repeated planning (including real-time planning), because the construction heuristics need to detect which parts of the solution to intialize, but not everything because that takes too long.