Hello Sreeni, > 2. in scenario b, I do not want to run the solver for best solution. This is what I interpret from your question: 1. you have some sort of working solution that is manually optimized to some degree (by human?); 2. you are willing to determine what constraints are still violated based on a rule base you created with drools but WITHOUT changing the actual manual working solution and WITHOUT running solver for multiple times; If this interpretation is correct, there is a way in drools planner to calculate score once and iterate working memory looking for constraint occurrences. WARNING, this API is intended to be internal and thus subject to a likely change: ScoreDirector scoreDirector = solver.getScoreDirectorFactory().buildScoreDirector(); scoreDirector.setWorkingSolution(schedule); scoreDirector.calculateScore(); <- only once, causes working memory to fire all rules but does not involve solver "search loop"

WorkingMemory workingMemory = ((DroolsScoreDirector) scoreDirector).getWorkingMemory(); Iterator<ConstraintOccurrence> it = (Iterator<ConstraintOccurrence>) workingMemory .iterateObjects(new ClassObjectFilter(ConstraintOccurrence.class)); while (it.hasNext()) { //here you collect constraint occurrences and prepare your report }

Hope this helps, for a complete example of the usage of this (internal!) api see drools planner examples from Geoffrey on Git.

br Reinis On 01/07/2013 04:38 AM, Sreeni Maheshwaram wrote: > Hi, > > Could you please advise: > > I am using the Drools Planner (5.5) to a) optimize the solution > and get best > solution b) allow the manual solution and resolve the conflicts, > based on > the business requirement. > > 1. scenario a is straight forward. I could run the solver, get > the best > solution, set it to the ScoreDirector as working solution, get the > constraints from the working memory. > > 2. in scenario b, I do not want to run the solver for best > solution. When I > set the manual solution as a working solution on the > ScoreDirector, I could > not get the constraints. > > As a work around, either I have to run the solver in scenario b > for some > time to get the constraints, which I can not afford and I do not > think the > constraints relate to the manual solution. > > Is there a way to get cosntraints based on the manual solution without > running the solver? > > regards, > Sreeni > > > > -- > View this message in context: > http://drools.46999.n3.nabble.com/Retrieving-constraints-based-on-a-manua... > Sent from the Drools: User forum mailing list archive at Nabble.com. > > > > > -- > Thanks, Sreeni M > > > > -- > Thanks, Sreeni M > > > _______________________________________________ > 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