May 2014 - rules-users - Jboss List Archives

Drools Planner: what if possible values of a PlanningVariable are dependent of another one?

by Willem van Asperen

Hi All, I have a PlanningEntity that has several planning variables, say A and B. Now, if A is O then B can be X or Y and when A is P then B can be Y or Z. I see two routes: * create a solution property that generates X, Y and Z as alternatives for B and rely on the score rules to dismiss improper values, depending on the value of A * create an entity property that only generates the possible values for B (i.e. X,Y for A=O and Y,Z for A=P) What is the best route? (Alternatively I do not use the constructionHeuristic and just start of my solution with a randomly (but correct) generated solution) Regards, Willem

11 years, 8 months

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Restrict size/resource usage of drools session

by kurrent93

Hi We have an application where users write their own rules via a UI, and these are then translated into drl, and run in a dedicated drools session. Each user can have one or more sessions. However, there are times when something goes wrong - say a rule starts looping - and it consumes all the resources - the server is running at 100% cpu, and it then effects all users. I realize we can optimize the the generated rules to prevent such issues, and we are working on this - however am interested to know if there are any ways - such as somehow sandboxing / restricting the resources that a drools session can use, so that should a rule cause problems, it will not effect the other running drools sessions. Thanks for any advice on this problem. -- View this message in context: http://drools.46999.n3.nabble.com/Restrict-size-resource-usage-of-drools-... Sent from the Drools: User forum mailing list archive at Nabble.com.

11 years, 8 months

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Drools 6.0.1 Negative Patterns in Stream Mode not working

by RichardAmbridge

I am using drools 6.0.1 and I have the following test. public class DroolsTest { public DroolsTest() { } @Test public void work() throws InterruptedException, IOException, ClassNotFoundException { StringBuilder sb = new StringBuilder(); sb.append("package drools\n"); sb.append("import drools.MyObject;\n\n"); sb.append("declare MyObject\n" + " @role ( event )\n" + "end\n\n"); sb.append("rule \"Template2\"\n" + "\n" + "salience 0\n" + "dialect \"mvel\"\n" + "when\n" + " $s : MyObject(val==0)\n" + " not( MyObject(val==1, this after [0s,5s] $s ) )\n" + "\n" + "then\n" + " System.out.println(\"Template 2 fired\")\n" + " $s.name=\"2\";\n" + "\n" + "end\n"); KieServices kieServices = KieServices.Factory.get(); KieFileSystem kfs = kieServices.newKieFileSystem(); kfs.write("src/main/resources/rules.drl", sb.toString()); KieBuilder kieBuilder = kieServices.newKieBuilder(kfs); kieBuilder.buildAll(); Results results = kieBuilder.getResults(); assertFalse(results.hasMessages(Message.Level.ERROR)); if (results.hasMessages(Message.Level.WARNING)) { System.out.println("Warnings logged"); } KieContainer kieContainer = kieServices.newKieContainer(kieBuilder.getKieModule().getReleaseId()); KieBaseConfiguration kieBaseConfiguration = kieServices.newKieBaseConfiguration(); kieBaseConfiguration.setOption(EventProcessingOption.STREAM); KieBase kieBase = kieContainer.newKieBase(kieBaseConfiguration); KieSession ksession = kieBase.newKieSession(); MyObject one = new MyObject(); one.val = 0; FactHandle fh1 = ksession.insert(one); System.out.println("Insert one"); ksession.fireAllRules(); for (int i = 0; i < 13; i++) { System.out.println("Sleep:" + i); Thread.sleep(1000); //After 5 seconds, rule should fire } assertEquals("2", one.name); System.out.println("End"); ksession.halt(); ksession.dispose(); } public class MyObject implements Serializable { String name; int val; boolean fired; public String getName() { return name; } public void setName(String name) { this.name = name; } public int getVal() { return val; } public void setVal(int val) { this.val = val; } public boolean isFired() { return fired; } public void setFired(boolean fired) { this.fired = fired; } } } The rule is using + " $s : MyObject(val==0)\n" + " not( MyObject(val==1, this after [0s,5s] $s ) )\n" So, if a MyObject with val==0 is inserted, then after 5 seconds no MyObject with val==1 is found the rule will fire. This works in Drools 5.5.0 In 6.0.1 the rule doesn't fire. Please help. I want to use drools 6 but cannot with this problem. Thanks -- View this message in context: http://drools.46999.n3.nabble.com/Drools-6-0-1-Negative-Patterns-in-Strea... Sent from the Drools: User forum mailing list archive at Nabble.com.

11 years, 8 months

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Drools eclipse plugin problem

by raojinghai＠gmail.com

Hi, Whenever I use classes from any third party jar files (not in JRE System Library and Drools Library), I got error messages in Eclipse IDE. At the place where I import the class, the error message is "Only a type can be imported. ... resolves to a package". At the place where I use the class, the error message is "... cannot be resolved to a type". However, I have included the jar file in classpath. The project can be executed successfully in Eclipse even with the error message in IDE. To make the problem easier to describe and to reproduce if anybody interested, I use the example reported at https://issues.jboss.org/browse/DROOLS-373. Both my problem and this are about external libraries, so I feel they may have some connections. Below are my steps: 1. Download drools6scratch-kiemavenclasspath.zip from jira and unzip the file 2. In eclipse, Import -> Existing Maven Projects, and select the unzipped folder 3. After import, convert the project to Drools Project Then I get errors in both package.drl and AppTest.java. The attached screenshots can give more details. This happens to every imported class from third party libraries. But the classes from JRE System Libraries or Drools Libraries are fine. So I have to disable drools builder, which also turns off drools validation in eclipse. It is very inconvenient for my development work. I believe many people are using eclipse for drools development, but I am surprise nobody complains about it on Internet. First I suspect its configuration problem on my side, but I tried with fresh installation on both MacOS and windows 7, and I always get the same problem. Below is my environment: - OS: Mac OS X 10.9.2 and Windows 7 - Eclipse Kepler (Standard and for Java EE Developer) - Drool Eclipse Plugin - JBoss Drools Core 6.0.1Final. - Java SE 1.7 - Drools Runtime 6.0.1 Thank you so much if anybody can help. Jinghai

11 years, 8 months

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KieScanner not working

by Pykhtin, Alex

I'm trying to use KieScanner in 6.0.1.Final build and just can't make it work. Maybe it's actually an issue with my using of Maven. Here's my code: ReleaseId releaseId = ks.newReleaseId( "com.study", "project_jar", "0.0.1-SNAPSHOT" ); KieContainer kContainer = ks.newKieContainer( releaseId ); KieSession kSession = kContainer.newKieSession("ksession-rules_jar"); KieScanner kScanner = ks.newKieScanner( kContainer ); Where "com.study" is my fictional domain and "project_jar" is the jar of my project. It has dependency on "drools_jar" which is a kjar of version "0.0.1-SNAPSHOT" (same version for both jars, by the way). Later, I'm trying to test drools_jar updating by doing two things: 1. Rebuilding and deploying drools_jar to the local repository; 2. Calling kScanner.scanNow() And KieScanner is not picking up the changes. If I'm deploying drools_jar with the same "0.0.1-SNAPSHOT" version, nothing happens, until the next time I restart my project. If I'm deploying drools_jar with the new "0.0.2-SNAPSHOT" version, then it's not a correct dependency and KieScanner is not picking it up (as I expected). If I'm rebuilding project_jar with a new dependency on "0.0.2-SNAPSHOT" of drools_jar, KieScanner is not picking it up either, but restart helps (as I expected). What is the proper practice of using KieScanner? Thanks, Alex

11 years, 8 months

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Drools 6.0.0 activation-group + salience bug or feature?

by Jan Šťastný

Hi, I came across in my view strange behaviour of rules defined with activation-group and salience. I use this combination to set the priority of exclusively fired rules "Democracy City Tiles Production" and "Basic City Tiles Production". Their definitions: rule "Democracy City Tiles Production" dialect "mvel" ruleflow-group "manageProductions" activation-group "cityProduction" salience 5 when PlayerDTO($owner:id, government=="democracy") $city:CityDTO( owner==$owner ,$cityId:id ,$managedTiles:managedTiles ) accumulate( TileDTO ( id memberOf $managedTiles ,$foodProd:foodProduction ,$resourcesProd:resourcesProduction ,$tradeProd:tradeProduction ) @watch(foodProduction,resourcesProduction,tradeProduction) ,$sumFood : sum($foodProd) ,$sumResources : sum($resourcesProd) ,$sumTrade : sum(($tradeProd<1)?$tradeProd:($tradeProd+1)) ) UpdateCityProduction(cityId==$cityId) then modify($city){ setFoodProduction($sumFood) ,setResourcesProduction($sumResources) ,setTradeProduction($sumTrade) } end and rule "Basic City Tiles Production" dialect "mvel" ruleflow-group "manageProductions" activation-group "cityProduction" when PlayerDTO($owner:id) $city:CityDTO( owner==$owner ,$cityId:id ,$managedTiles:managedTiles ) accumulate( TileDTO ( id memberOf $managedTiles ,$foodProd:foodProduction ,$resourcesProd:resourcesProduction ,$tradeProd:tradeProduction ) @watch(foodProduction,resourcesProduction,tradeProduction) ,$sumFood : sum($foodProd) ,$sumResources : sum($resourcesProd) ,$sumTrade : sum($tradeProd) ) UpdateCityProduction(cityId==$cityId) then modify($city){ setFoodProduction($sumFood) ,setResourcesProduction($sumResources) ,setTradeProduction($sumTrade) } end But problem occurs when two CityDTO objects are in the session. I would like to fire one rule for each CityDTO, but the activation-group cancels all the activations after first is fired. So only one activation in place of two fires. Here is the log: ==>[BeforeActivationFiredEvent: getActivation()=[[ Democracy City Tiles Production active=false ] [ [fact 0:12:36803987:36803987:12:DEFAULT:NON_TRAIT:UpdateCityProduction( cityId=5 )] [fact 0:16:2083264739:2083264739:16:null:NON_TRAIT:[Ljava.lang.Object;@7c2c18e3] [fact 0:11:792938926:966:11:DEFAULT:NON_TRAIT:CityDTO [id=5, name=marefy, cityCentre=null, owner=1, improvements=[], currentImprovement=null, enabledImprovements=[], homeUnits=[], currentUnit=null, enabledUnitTypes=[], tradeRoutes=[], managedTiles=[1, 2], size=5, weLoveDay=false, disorder=false, foodProduction=0, foodConsumption=0, foodSurplus=0, foodStock=0, resourcesProduction=0, resourcesConsumption=0, resourcesSurplus=null, tradeProduction=0, corruption=0, luxuriesAmount=0, luxuriesSpent=0, taxesAmount=0, researchAmount=0, peopleHappy=2, peopleUnhappy=1, peopleContent=1, peopleEntertainers=0, peopleTaxmen=1, peopleScientists=0, pollutionChance=0, improvementsUpkeep=0, unitsSupport=0]] [fact 0:9:1762763035:99463566:9:DEFAULT:NON_TRAIT:PlayerDTO [id=1, name=honza, government=democracy, enabledGovernments=null, currentAdvance=null, advances=null, enabledAdvances=null, treasury=0, research=0, researchSpent=null, turnsAvailable=null, luxuriesRatio=0, taxesRatio=0, researchRatio=0]] ] ], getKnowledgeRuntime()=org.drools.core.impl.StatefulKnowledgeSessionImpl@6a5b07f2] ==>[ActivationCancelledEvent: getCause()=CLEAR, getActivation()=[[ Basic City Tiles Production active=false ] [ [fact 0:15:807492131:807492131:15:null:NON_TRAIT:[Ljava.lang.Object;@30215a23] [fact 0:11:792938926:966:11:DEFAULT:NON_TRAIT:CityDTO [id=5, name=marefy, cityCentre=null, owner=1, improvements=[], currentImprovement=null, enabledImprovements=[], homeUnits=[], currentUnit=null, enabledUnitTypes=[], tradeRoutes=[], managedTiles=[1, 2], size=5, weLoveDay=false, disorder=false, foodProduction=0, foodConsumption=0, foodSurplus=0, foodStock=0, resourcesProduction=0, resourcesConsumption=0, resourcesSurplus=null, tradeProduction=0, corruption=0, luxuriesAmount=0, luxuriesSpent=0, taxesAmount=0, researchAmount=0, peopleHappy=2, peopleUnhappy=1, peopleContent=1, peopleEntertainers=0, peopleTaxmen=1, peopleScientists=0, pollutionChance=0, improvementsUpkeep=0, unitsSupport=0]] [fact 0:12:36803987:36803987:12:DEFAULT:NON_TRAIT:UpdateCityProduction( cityId=5 )] ] ], getKnowledgeRuntime()=org.drools.core.impl.StatefulKnowledgeSessionImpl@6a5b07f2] ==>[ActivationCancelledEvent: getCause()=CLEAR, getActivation()=[[ Basic City Tiles Production active=false ] [ [fact 0:23:833001332:833001332:23:null:NON_TRAIT:[Ljava.lang.Object;@31a69774] [fact 0:18:1816369501:968:18:DEFAULT:NON_TRAIT:CityDTO [id=7, name=Brno, cityCentre=null, owner=1, improvements=[], currentImprovement=null, enabledImprovements=[], homeUnits=[], currentUnit=null, enabledUnitTypes=[], tradeRoutes=[], managedTiles=[3, 4], size=1, weLoveDay=false, disorder=false, foodProduction=0, foodConsumption=0, foodSurplus=0, foodStock=0, resourcesProduction=0, resourcesConsumption=0, resourcesSurplus=null, tradeProduction=0, corruption=0, luxuriesAmount=0, luxuriesSpent=0, taxesAmount=0, researchAmount=0, peopleHappy=0, peopleUnhappy=0, peopleContent=1, peopleEntertainers=0, peopleTaxmen=0, peopleScientists=0, pollutionChance=0, improvementsUpkeep=0, unitsSupport=0]] [fact 0:20:1314789527:1314789527:20:DEFAULT:NON_TRAIT:UpdateCityProduction( cityId=7 )] ] ], getKnowledgeRuntime()=org.drools.core.impl.StatefulKnowledgeSessionImpl@6a5b07f2] ==>[ActivationCancelledEvent: getCause()=CLEAR, getActivation()=[[ Democracy City Tiles Production active=false ] [ [fact 0:20:1314789527:1314789527:20:DEFAULT:NON_TRAIT:UpdateCityProduction( cityId=7 )] [fact 0:19:1857434733:1857434733:19:null:NON_TRAIT:[Ljava.lang.Object;@6eb6346d] [fact 0:18:1816369501:968:18:DEFAULT:NON_TRAIT:CityDTO [id=7, name=Brno, cityCentre=null, owner=1, improvements=[], currentImprovement=null, enabledImprovements=[], homeUnits=[], currentUnit=null, enabledUnitTypes=[], tradeRoutes=[], managedTiles=[3, 4], size=1, weLoveDay=false, disorder=false, foodProduction=0, foodConsumption=0, foodSurplus=0, foodStock=0, resourcesProduction=0, resourcesConsumption=0, resourcesSurplus=null, tradeProduction=0, corruption=0, luxuriesAmount=0, luxuriesSpent=0, taxesAmount=0, researchAmount=0, peopleHappy=0, peopleUnhappy=0, peopleContent=1, peopleEntertainers=0, peopleTaxmen=0, peopleScientists=0, pollutionChance=0, improvementsUpkeep=0, unitsSupport=0]] [fact 0:9:1762763035:99463566:9:DEFAULT:NON_TRAIT:PlayerDTO [id=1, name=honza, government=democracy, enabledGovernments=null, currentAdvance=null, advances=null, enabledAdvances=null, treasury=0, research=0, researchSpent=null, turnsAvailable=null, luxuriesRatio=0, taxesRatio=0, researchRatio=0]] ] ], getKnowledgeRuntime()=org.drools.core.impl.StatefulKnowledgeSessionImpl@6a5b07f2] Is it a bug? Thanks Jan

11 years, 8 months

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OptaPlanner scalability

by Rupesh M G

Hi, I tested Optaplanner successfully for a fleet planning application. Upto 1200 trips with around 80 vehicles for 3 days is fine. I'm reaching the target of 0 hard constraints in less than 30 minutes. But my target is to plan for a month with 12000 trips using 80 vehicles. This time it didn't complete even after 12 hours. I found the memory (< 500 MB) and CPU (25%) usage is less. So tried running 3 solver threads and grouping the vehicles. Now CPU usage increases. I followed the vehicle routing sample application and the config xml is very similar. I used late acceptance (200) and accept count (1000). I'm using incremental score calculation; and applied change & swap filters in the config xml. Requesting experts for some thoughts on how Optaplanner can scale on similar situations. Thanks & Regards, Rupesh DISCLAIMER: "The information in this e-mail and any attachment is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you have received this e-mail in error, kindly contact the sender and destroy all copies of the original communication. IBS makes no warranty, express or implied, nor guarantees the accuracy, adequacy or completeness of the information contained in this email or any attachment and is not liable for any errors, defects, omissions, viruses or for resultant loss or damage, if any, direct or indirect."

11 years, 8 months

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Is property reactive bug in 5.5 fixed in 6.0

by wtang

Hi, I am having issues with property reactive causing some rules not to get fired. Looks like someone also encountered this issue in 5.5 and it was agreed to be a bug. I am using 6.0 and was wondering if this bug is fixed. Here is the detail of the property reactive bug in 5.5: http://drools.46999.n3.nabble.com/same-criteria-across-multiple-rules-can... thanks! Wing Tang -- View this message in context: http://drools.46999.n3.nabble.com/Is-property-reactive-bug-in-5-5-fixed-i... Sent from the Drools: User forum mailing list archive at Nabble.com.

11 years, 8 months

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Possibility to use variable reference in date comparison using coincides?

by Björn Nord

Hi, Is there a way to use a reference to a variable in the coincide-section like the one I have tried below with $expireWeeks? rule "Request expired analysis" dialect "mvel" when SettingForDefinition( definition == "DonationAnalysisRequest" , $code : setting, $expireWeeks : value) Donation( $donationDate : sampleDate) // $expireWeeks below does not work. not PerformedDonationAnalysis(code == $code, sampleDate coincides [$expireWeeks] $donationDate) then ... End Kindest regards, Björn

11 years, 8 months

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NullPointerException when calling FactType.set and FactType.setFromMap

by Patel, Ronak (Autonomy)

Hello all, I'm getting a NullPointerException when calling org.kie.api.definition.type.FactType.set(Object, String, Object) and also when I call org.kie.api.definition.type.FactType.setFromMap(Object, Map<String, Object>). The exception stack trace points to the same line in both cases: Exception in thread "main" java.lang.NullPointerException at org.drools.core.factmodel.ClassDefinition.set(ClassDefinition.java:255) ... Doing some debugging, I found that the getFieldAccessor() call in org.drools.core.factmodel.ClassDefinition, line 255, is returning null, which is what's causing this. I didn't dig deeper than that, though. I created the data model in Drools Workbench 6.0.1 final and I've double-checked that the field I'm passing in to set a value exists on the object. Below is my code and it's throwing the NPE on the last line. I'm going to try to use standard Java reflection instead for now, but any assistance on this would be appreciated. I can provide any other code, the KieModule JAR produced by Workbench, or anything else, if needed. KieServices ks = KieServices.Factory.get(); KieContainer kContainer = ks.newKieContainer(ks.newReleaseId("com.hp.pa.sample", "realestate", "LATEST")); KieSession kSession = kContainer.newKieSession(); KieBase kBase = kSession.getKieBase(); FactType agentAssignmentType = kBase.getFactType("com.hp.pa.sample.realestate", "AgentAssignmentData"); FactType property4SaleType = kBase.getFactType("com.hp.pa.sample.realestate", "PropertyForSale"); if (agentAssignmentType == null || property4SaleType == null) System.err.println("Could not find a FactType"); Object agentAssignment = null; Object property4Sale = null; try { agentAssignment = agentAssignmentType.newInstance(); property4Sale = property4SaleType.newInstance(); } catch (InstantiationException e) { e.printStackTrace(); } catch (IllegalAccessException e) { e.printStackTrace(); } property4SaleType.set(property4Sale, "city", "San Diego"); Thank you, Ronak Patel Software Designer HP Autonomy

11 years, 8 months

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rules-users May 2014