I found (i guess) a way to iterate over list, but it is not comparing and assigning the workorder now. I tried this way: ----------------- rule "requiredSkill" when There is an unassigned workorder and the workorder has a requiredSkill other than null and there is an engineer and the engineer has a skill other than null and engineer skill is the same as workorder skill then assign workorder to engineer engineer ----------------- this is how i tried implementing; ----------------- rule "requiredSkill" when $workOrder : WorkOrder() $woReqSkill : SkillWorkOrder($requiredSkillWO : skill , eval(skill != null)) from $workOrder.requiredSkills $engineer : Engineer() $engineerSkill : SkillEngineer($engSkill : skill, eval(skill != null)) from $engineer.skillEngineerList exists SkillEngineer( $engineerSkill.skill == $woReqSkill.skill ) then insertLogical(new IntConstraintOccurrence("requiredSkill", ConstraintType.NEGATIVE_HARD, 1, $engineer)); end ----------------- But all workorders are going to the same one, it is not validating if one is equals to other. 2013/2/18 André Fróes <arfmoraes(a)gmail.com&gt; > Hello everyone! > > How can I compare 2 lists with a rule? > I upgraded my basic model to a more complex one now, but now I hit a > wall. My WorkOrder have a List of skills, and my Engineer also have a list > of Skills and I have to compare one with another. > > Example: > > Engineer A have skill ABC 1 > Engineer B have skill ABC 2 > Engineer C have skill ABC 3 > > WorkOrder A needs an engineer with skill ABC 3 > WorkOrder B needs an engineer with skill ABC 1 > WorkOrder C needs an engineer with skill ABC 2 > > The result should be this: > > Engineer A will receive WorkOrder B > Engineer B will receive WorkOrder C > Engineer C will receive WorkOrder A > --------------- > > I am able to sort it by time, but not by skill, and I don't know how to > loop over each list to find if one have the skills needed to fulful the > other. These are my classes involved: > > WorkOrder attributes: > -------- > private int requiredWorktime; > private Priority priority;(enum) > private Severity severity;(enum) > private List<SkillWorkOrder> requiredSkills; > -------- > Engineer attributes: > -------- > private int worktime; > private String name; > private List<SkillEngineer> skillEngineerList; > -------- > Skill attributes: > -------- > private String name; > -------- > > both SkillEngineer and SkillWorkOrder are classes that simple receives > the named class and a Skill: > Eg: > private Engineer engineer; //Or WorkOrder > private Skill skill; > > Is it possible to iterate over these 2 lists, by drool rule, to check > wich engineer have most coincidences with an workorder? (Eg: if and > Engineer have skill ABC1, ABC2 and a WorkOrder needs an engineer with skill > ABC1, ABC2 and ABC3 he would be choseng among the others because his skills) > >

Thanks for the answer Armand, I'll try to explain better the model, since there's more people asking me about it here by e-mail (Ana Kuzjminska and others). Before that, I tried what you passed me, I had already tried that aproach, but didn't work, it sorts, but doesn't give the engineer the proper workorder. About the model I am trying to create, it is a simple distribution of workorder to engineers (for any kind of company), where workorder is considered to be any kind of problem, and it has a priority to be respected and, sometimes, one or more skills, that are required to do that work, for example, an engineer that must fix an antena must know how to fix that, otherwise, there's no reason to send him there. An engineer may have none or several skills. Everyone has a worktime to be respected (this is working at the model, but I'm not using Date attribute yet, it will be another step). The model classes: Engineer -- worktime (int) -- name (string) -- skillEngineerList (List<SkillEngineerList>) Workorder (PlanningEntity) -- requiredWorktime (int) -- priority (Priority) -- requiredSkills (List<SkillWorkOrder>) -- engineer (engineer) SkillEngineerList -- engineer (engineer) -- skill (skill) SkillWorkOrder -- workorder (workorder) -- skill (skill) Skill -- name (string) Priority (enum) -- code (string) -- deadline (double) As you can see, a workorder may have none to several skills, same's for engineer, there's where I am at the moment. By scorecalculator i was able to make it work, but it is not excluding the workorders that exceed engineers time: Engineer 1, worktime 8 - skill ABC1, ABC2 WorkOrder 1, worktime 8 - requiredSkills ABC2 WorkOrder 2, worktime 8 - requiredSkills ABC1 only one should be assigned to it, since he can do both, but when running my model, the hard constraint of time is being broken, and both are assigned. After that works, the next step to this model would be implement the priority, the lower the deadline is, the more important it is, and it will work directly with a date property that i'll insert in worktime object later, because the workorder will have to be answered from the moment it is registered according to its priority. It would be something like this: Workorder (PlanningEntity) -- requiredWorktime (int) -- created (Date) <-- -- priority (Priority) -- requiredSkills (List<SkillWorkOrder>) -- engineer (engineer) so, if a workorder is registered at 10:00 am and priority is P1 with deadline of 1 hour, it should be answered right away, based on engineer worktime either. The solution I found by scorecalculator: public HardAndSoftScore calculateScore(Distributor distributor) { int hardScore = 0; int softScore = 0; for (Engineer e : distributor.getEngineerList()){ int requiredWorktime = 0; List<Skill> requiredSkillList = new ArrayList<Skill>(); for (WorkOrder o : distributor.getWorkOrderList()){ if (e.equals(o.getEngineer())){ requiredWorktime += o.getRequiredWorktime(); for (SkillWorkOrder swo : o.getRequiredSkills()){ requiredSkillList.add(swo.getSkill()); } } } int engineerAvailableTime = e.getWorktime() - requiredWorktime; if (engineerAvailableTime < 0 ){ hardScore += engineerAvailableTime; } int commonSkillCount = 0; for (SkillEngineer se : e.getSkillEngineerList()){ for (Skill s : requiredSkillList){ if (se.getSkill().getId() == s.getId()){ commonSkillCount++; } } } if (commonSkillCount != 0){ hardScore += commonSkillCount; } } return DefaultHardAndSoftScore.valueOf(hardScore, softScore); } but as I said, every workorder is being assigned exceeding engineer's worktime. 2013/2/19 Welsh, Armand <AWelsh(a)statestreet.com <mailto:AWelsh@statestreet.com>> I would consider using comparable lists, where workorderSkill.compareTo(employeeSkills) can be true for the same skill. When $workorder : WorkOrder( $requiredSkills : skills) $workorderSkill : Skill ( ) from $requiredSkills $employee : Employee( skills contains $workorderSkill) then // do whatever, for each employee with a matching skill for all work orders, this rule will file. // if you need to limit only one employee with matching skill to workorder, then more logic will need to be built End In this scenario, you are collecting all the workorder, and required skills. Then you check each employee to see if their list of skills contains any of the required skills (not all skill are required in this case, just one skill like your example suggested). *From:*rules-users-bounces@lists.jboss.org <mailto:rules-users-bounces@lists.jboss.org> [mailto:rules-users-bounces@lists.jboss.org <mailto:rules-users-bounces@lists.jboss.org>] *On Behalf Of *André Fróes *Sent:* Monday, February 18, 2013 10:52 AM *To:* Rules Users List *Subject:* Re: [rules-users] Comparing 2 Lists [Planner] I found (i guess) a way to iterate over list, but it is not comparing and assigning the workorder now. I tried this way: ----------------- rule "requiredSkill" when There is an unassigned workorder and the workorder has a requiredSkill other than null and there is an engineer and the engineer has a skill other than null and engineer skill is the same as workorder skill then assign workorder to engineer engineer ----------------- this is how i tried implementing; ----------------- rule "requiredSkill" when $workOrder : WorkOrder() $woReqSkill : SkillWorkOrder($requiredSkillWO : skill , eval(skill != null)) from $workOrder.requiredSkills $engineer : Engineer() $engineerSkill : SkillEngineer($engSkill : skill, eval(skill != null)) from $engineer.skillEngineerList exists SkillEngineer( $engineerSkill.skill == $woReqSkill.skill ) then insertLogical(new IntConstraintOccurrence("requiredSkill", ConstraintType.NEGATIVE_HARD, 1, $engineer)); end ----------------- But all workorders are going to the same one, it is not validating if one is equals to other. 2013/2/18 André Fróes <arfmoraes(a)gmail.com <mailto:arfmoraes@gmail.com>> Hello everyone! How can I compare 2 lists with a rule? I upgraded my basic model to a more complex one now, but now I hit a wall. My WorkOrder have a List of skills, and my Engineer also have a list of Skills and I have to compare one with another. Example: Engineer A have skill ABC 1 Engineer B have skill ABC 2 Engineer C have skill ABC 3 WorkOrder A needs an engineer with skill ABC 3 WorkOrder B needs an engineer with skill ABC 1 WorkOrder C needs an engineer with skill ABC 2 The result should be this: Engineer A will receive WorkOrder B Engineer B will receive WorkOrder C Engineer C will receive WorkOrder A --------------- I am able to sort it by time, but not by skill, and I don't know how to loop over each list to find if one have the skills needed to fulful the other. These are my classes involved: WorkOrder attributes: -------- private int requiredWorktime; private Priority priority;(enum) private Severity severity;(enum) private List<SkillWorkOrder> requiredSkills; -------- Engineer attributes: -------- private int worktime; private String name; private List<SkillEngineer> skillEngineerList; -------- Skill attributes: -------- private String name; -------- both SkillEngineer and SkillWorkOrder are classes that simple receives the named class and a Skill: Eg: private Engineer engineer; //Or WorkOrder private Skill skill; Is it possible to iterate over these 2 lists, by drool rule, to check wich engineer have most coincidences with an workorder? (Eg: if and Engineer have skill ABC1, ABC2 and a WorkOrder needs an engineer with skill ABC1, ABC2 and ABC3 he would be choseng among the others because his skills) _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org <mailto:rules-users@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