June 2014 - rules-users - Jboss List Archives

by Ravi

Hi, > > I am new to drools. I want to write a function that accepts two strings and returns a date. The two strings are one for the payment frequency and the other for the payment day. Following are my requirements: > > 1.If the payment frequency is daily, return current date > 2.If the payment frequency is weekly and the payment day is let's say Monday, and the current day is Monday, then return current date. If the current day is Monday and the payment day is Tuesday, return current date + 1. Likewise, if the payment day is Wednesday, return current date + 2. > 3.If the payment frequency is monthly and payment day is 15, retrieve the current month and current year and return MM-15-YYYY. > Please help me write a function for this. Thank you so much in advance. >

12 years, 1 month

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Coarse Grained Moves

by DwProd .

Hello there, I'm pretty new to OptaPlanner, and I must say I'm really impressed with the maturity of it all. Great software with a great documentation ! I've been working on a variation of the Cloud Balancing example, with a few differences, which make it look like the Machine Reassignment problem as well : - Some processes are already placed and are immovable (using a Selection Filter checking a boolean property of the planning entity) - The Computer (the planning variable) is nullable (basically this is Multiple Muti-Dimensional Knapsack problem) which means I added a soft constraint penalty for processes with a null host. - Processes can only be of a few classes (which I called services, a Problem Fact). Processes of a given service type have a certain amount of required cpu and ram. Taking these elements into account, I do get very good results with OptaPlanner. However, the following constraints always put me into a score trap : - For some services, processes work in groups. For instance, if groups are of size 3, having 7 processes is not any better than having 6 processes. If there were already 2 processes (immovable and placed), I should only add 4 processes and not 5, even if there are enough resources. For this constraint, I have tried using a rule (medium constraint) accumulating processes of that service and using the modulo operator with the group size. - Some services are dependant on one another. For instance, I know that if I have n1 groups of processes of the service 1, I require Math.ceil(2.5*n1) groups of processes of the service 2. I have implemented this similarly with a medium constraint... With any (or both) of these constraints, little to no processes of the concerned services are added and I fail to reach a good solution. I have tried benchmarking with several local search methods and various parameters, but all give the same results... I feel like the next logical step would be to used the often mentioned in the documentation "Coarse Grained Moves" but I fail to locate any simple example. The Nurse Rostering example seems to use that technique to some extent but it seems like an overly complicated example, is it not. Thank you very much for reading this far, if you have any question, guideline, or just a trick, I'd be absolutely delighted to hear from you ! Cheers, Woody

12 years, 1 month

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Is there an option to import the drl file in kie-drools-wb-distribution-6.0.1.Final version UI?

by LaKhI ReDdY!!!!!!!!!!!

Hi, Can we import the drl file in kie-drools-wb-distribution-6.0.1.Final version, I see only create the DRL option and not import option? AUTHORING -> PROJECT AUTHORING - > NEW ITEM -> DRL File Is there an option to import the drl file? Regards, Lakshmi Reddy

12 years, 1 month

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Can we user RDBMS in BRMS 6.0.1 version?

by LaKhI ReDdY!!!!!!!!!!!

Hi , I am using kie-drools-wb-distribution-6.0.1.Final. I see that,In this version of BRMS,it stores all the rule/packages/assets/DRL's in Git repository not in RDBMS, Please confirm on this? In case if we can use RDBMS like Guvnor 5.1.1/5.3.3.Final in 6.0.1.Final version, please let me know how to setup to RDBMS in BRMS 6.0.1 version? Regards, lakhi

12 years, 1 month

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Is there an option to import the drl file in kie-drools-wb-distribution-6.0.1.Final version UI?

by LaKhI ReDdY!!!!!!!!!!!

Hi, Can we import the drl file in kie-drools-wb-distribution-6.0.1.Final version, I see only create the DRL option and not import option? AUTHORING -> PROJECT AUTHORING - > NEW ITEM -> DRL File Is there an option to import the drl file? Regards, lakhi

12 years, 1 month

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Drools Fusion - Intersection Of Events

by code4dc

Hey guys, I am using the Drools Fusion temporal parameters to try to detect if two events have *any* overlap between the two of them. Can anyone suggest the cleanest way to do this using the temporal parameters? Currently I am comparing the two events using 'overlaps', 'overlappedby', 'includes' and I feel like I am still missing a few cases. Can anyone suggest how to perform this check in the cleanest way possible? Thanks Eugene -- View this message in context: http://drools.46999.n3.nabble.com/Drools-Fusion-Intersection-Of-Events-tp... Sent from the Drools: User forum mailing list archive at Nabble.com.

12 years, 1 month

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OptaPlanner mailing list split off

by Geoffrey De Smet

Hi, The OptaPlanner mailing list has been split off from the Drools mailing list, at the request of several users, to keep the verbosity of this mailing lists down. If you have a question about OptaPlanner, now use these URL's: - Ask a usage question on StackOverflow: http://stackoverflow.com/questions/tagged/optaplanner - To start a discussion, use the OptaPlanner developer forum: https://groups.google.com/forum/#!forum/optaplanner-dev (or mail directly to optaplanner-dev(a)googlegroups.com) For more information, see optaplanner.org: http://www.optaplanner.org/community/forum.html http://www.optaplanner.org/community/droolsPlannerRenamed.html With kind regards, Geoffrey De Smet OptaPlanner lead

12 years, 1 month

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Fwd: Regarding drools 6 workbench

by Michael Anstis

---------- Forwarded message ---------- From: Ganesh Neelekani <ganeshneelekani(a)gmail.com> Date: 26 June 2014 06:35 Subject: Re: Regarding drools 6 workbench I am facing some strange issue if you use webservice "Unknown kieSession name:ksession-rules if use @webservice", Do I need to change code if you I use webservice Please follow up in below link http://drools.46999.n3.nabble.com/quot-Unknown-KieSession-name-ksession-r... Thanking you. ---------------------------------------------------------------------- With regards. Ganesh N Neelekani

12 years, 1 month

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Searching for an object in a list inside a map

by Steinmetz, Jean-Philippe

Hello, I have a scenario where I have a rule that is searching for a particular object inside a list and the list is an entry in a hashmap. An example of the class structure looks something like this. class Player { String name; } class TeamRoster { // Maps team name to players Map<String, List<Player>> teams; } The goal of the rule is to activate when there is a player named John on the Dodgers team. I have tried writing rules a couple of ways but end up with errors using either approach. My first approach was the following: dialect "mvel" rule when $roster : TeamRoster() $player : Player(name == "John") from $roster.teams["Dodgers"] then ... end However this resulted in the following error: Unable to Analyse Expression $roster.teams["Dodgers"]: sun.reflect.generics.reflectiveObjects.ParameterizedTypeImpl cannot be cast to java.lang.Class] So I tried changing it up with the following... dialect "mvel" rule when $roster : TeamRoster() $player : Player(name == "John") eval($roster.teams["Dodgers"] contains $player then ... end This effectively yields the same error: Expression $roster.teams["Dodgers"] contains $player: sun.reflect.generics.reflectiveObjects.ParameterizedTypeImpl cannot be cast to java.lang.Class] Note I am using Drools 6.0.1.Final. Is this some sort bug or limitation with the rules parser? Assuming I cannot change the class structure how can I achieve what I need? Thanks in advance, Jean-Philippe Steinmetz

12 years, 1 month

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Any way to housekeep "Version History" of business rule assets using guvnor

by nelson.wan

Hello all, Using guvnor, all business rule assets have their own "version history" for every save changes. We hope to know if there is any way (version 5.6.0.final) to purge old version history, to avoid the list growing very large. Many thanks for your help. I am using: Drools 5.6.0.final JBoss EAP 6.2.0.GA Thanks, Nelson -- View this message in context: http://drools.46999.n3.nabble.com/Any-way-to-housekeep-Version-History-of... Sent from the Drools: User forum mailing list archive at Nabble.com.

12 years, 1 month

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rules-users June 2014