[jboss-jira] [JBoss JIRA] (JBRULES-3440) No score reported in best solution if no steps taken

[Chris Dolan (JIRA)]

Chris Dolan created JBRULES-3440:
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             Summary: No score reported in best solution if no steps taken
                 Key: JBRULES-3440
                 URL: https://issues.jboss.org/browse/JBRULES-3440
             Project: Drools
          Issue Type: Bug
      Security Level: Public (Everyone can see)
          Components: drools-planner
    Affects Versions: 5.4.0.Beta2
         Environment: drools-planner-example 5.4.0-SNAPSHOT pulled via Maven on March 29. This is commit https://github.com/droolsjbpm/drools-planner/commit/ba38344b7563830eb2a725f78c03be043b1c1f65
            Reporter: Chris Dolan
            Assignee: Geoffrey De Smet
            Priority: Minor


If my initial solution guess is perfect and the solver exits before taking any steps, then solver.getBestSolution().getScore() is null. If I change my initializer so the first guess is intentionally wrong, then getScore() returns non-null.

I would prefer that getScore() would be guaranteed to always return non-null after a successful solver.solve() invocation. Clearly the score is being computed because the log messages show it (see below). But the returned solution instance does not reflect that. By debugging, I can see that the returned solution is in fact the same instance that I passed in via setPlanningProblem() and not a clone.

{noformat}
2012-03-30 15:42:53,283 INFO  [DefaultSolver.java:172] Solving started: time spend (145), score (0hard/0soft), new best score (0hard/0soft), random seed (0). - o.d.p.c.s.DefaultSolver
2012-03-30 15:42:53,289 INFO  [DefaultSolver.java:197] Solving ended: time spend (156), best score (0hard/0soft), average calculate count per second (6). - o.d.p.c.s.DefaultSolver
{noformat}


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