July 2011 - rules-users - Jboss List Archives

Drools Expert (5.2.0.Final) documentation; Ch5 issue

by Robert Christenson

When viewing the single-html docs for 5.2.0.-Final, the documentation is truncated after section 5.8.3.8 Checked the html option as well, it also ends at 5.8.3.8 for Chapter 5. No problems with the pdf, though it's not directly accessible from the doco page, http://www.jboss.org/drools/documentation I found the pdf in this directory: http://docs.jboss.org/drools/release/5.2.0.Final/drools-expert-docs/ Just wanted to let the 'powers that be' know of the issue.

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evaluating different aspects of the same event

by Andre

i want to accumulate on different properties of my event. i have 3 rules which all work in the same manner , accumulate on that event and then work with that result my rules are all like this rule "Request counting Subject By Id" when $set: Set() from accumulate($neu : RequestCtx() over window:time(1m),countMatchingSubjectIdsInRequest($neu) ) java.util.Map.Entry( $id: key, $count: value > 1 ) from $set then channels["AuthZBlocking"].send(new ItemCacheEntry(new Item((String)$id), new Date(System.currentTimeMillis()+ 20000))); end these rules should work concurrently, depending on the propterties. to test this i wrote... let us assume: Rule1 looks for A.A and if |A.A>1| fire Rule2 looks for A.B and if |A.B>1| fire Rule3 looks for A.C and if |A.C>1| fire i inserted A.A A.A A.B A.B A.C A.C and instead of firing 1,2,3 the engine fires : 1,1,2,1,1,2,1,2 Do i have to influence the agenda , when working on the same eventtype ?? -- View this message in context: http://drools.46999.n3.nabble.com/evaluating-different-aspects-of-the-sam... Sent from the Drools: User forum mailing list archive at Nabble.com.

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Processing a collection within a fact object

by kirkm

I have an application that is inserting a fact object into a session. The object has a collection in it that is being iterated and each of the individual children objects is being inserted into the session with a reference back to their "parent" object. The child facts cause other rules to fire and the children objects are updated in some situations. Is there any way to determine if all the rules have fired due to the children insertions? The desired result is to have a parent object with possible updates to the children for further processing. Can and should an accumulator be used instead of the inserting the child objects? Kirk -- View this message in context: http://drools.46999.n3.nabble.com/Processing-a-collection-within-a-fact-o... Sent from the Drools: User forum mailing list archive at Nabble.com.

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FW: Capitalized element names

by Tom.E.Murphy＠wellsfargo.com

Thanks Edson, however here is more info on the issue as I've been playing with it: 1. I have other elements in other objects referenced within the same rule group that start with capital letters and they have no problem. Example: , FHAMaxBaseMortgageWithToleranceAmt < ($totalLoanAmt+$aggregateSubordinateFinancingAmt) Compiles just fine in the same session. 2. If I lower the first M to m to make it mICompanyMarketClassification, it compiles in 5.2 but does NOT compile in 5.0.1 3. If I leave it as the capitalized MICompanyMarketClassification, it compiles in 5.0.1 but not 5.2 Thoughts? Tom Murphy Systems Architect Wells Fargo HCFG - CORE Deal Decisioning Platform 800 S. Jordan Creek Parkway | West Des Moines, IA 50266 MAC: X2301-01B Office: 515 324 4853 | Mobile: 515 423 4334 tom.e.murphy(a)wellsfargo.com<mailto:tom.e.murphy@wellsfargo.com> This transmission may contain information that is confidential and/or proprietary. If you are not the individual or entity to which it is addressed, note that any review, disclosure, copying, retransmission, or other use is strictly prohibited. If you received this transmission in error, please notify the sender immediately and delete the material from your system. From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Edson Tirelli Sent: Tuesday, July 26, 2011 7:45 PM To: Rules Users List Subject: Re: [rules-users] Capitalized element names Hi Tom, I've seen this before and AFAIK, the javaBeans spec always transforms the first letter to lowercase when converting a get method into a property name. We can try to address this in future releases, maybe falling back to uppercase if the lower case property name lookup fails, but I don't think there is a solution to keep it as is. In 5.2. you can use the full method name instead, but not sure if that isn't event worse: MortageInsurance{ getMICompanyMarketClassification() in ("2", "3") } Edson 2011/7/26 <Tom.E.Murphy(a)wellsfargo.com<mailto:Tom.E.Murphy@wellsfargo.com>> In the following rule, the element MICompanyMarketClassification is capitalized due to the MI portion being an acronym for Mortgage Insurance. This comes from our enterprise data model and is not something I can change. rule "R1234" dialect "java" when MortageInsurance{ MICompanyMarketClassification in ("2", "3") } then system.out.printLn("something"); end The rule refuses to compile, giving a message "Unable to Analyse Expression MICompanyMarketClassification == "2" || MICompanyMarketClassification == "3": [Error: no such identifier: MICompanyMarketClassification] [Near : {... MICompanyMarketClassification ....}]" I assume this is caused by the capitalized first letter? Anything I can do to fix the issue or work around it? Drools 5.2 community edition Tom Murphy Systems Architect Wells Fargo HCFG - CORE Deal Decisioning Platform 800 S. Jordan Creek Parkway | West Des Moines, IA 50266 MAC: X2301-01B Office: 515 324 4853 | Mobile: 515 423 4334 tom.e.murphy(a)wellsfargo.com<mailto:tom.e.murphy@wellsfargo.com> This transmission may contain information that is confidential and/or proprietary. If you are not the individual or entity to which it is addressed, note that any review, disclosure, copying, retransmission, or other use is strictly prohibited. If you received this transmission in error, please notify the sender immediately and delete the material from your system. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org<mailto:rules-users@lists.jboss.org> https://lists.jboss.org/mailman/listinfo/rules-users -- Edson Tirelli JBoss Drools Core Development JBoss by Red Hat @ www.jboss.com<http://www.jboss.com>

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Capitalized element names

by Tom.E.Murphy＠wellsfargo.com

In the following rule, the element MICompanyMarketClassification is capitalized due to the MI portion being an acronym for Mortgage Insurance. This comes from our enterprise data model and is not something I can change. rule "R1234" dialect "java" when MortageInsurance{ MICompanyMarketClassification in ("2", "3") } then system.out.printLn("something"); end The rule refuses to compile, giving a message "Unable to Analyse Expression MICompanyMarketClassification == "2" || MICompanyMarketClassification == "3": [Error: no such identifier: MICompanyMarketClassification] [Near : {... MICompanyMarketClassification ....}]" I assume this is caused by the capitalized first letter? Anything I can do to fix the issue or work around it? Drools 5.2 community edition Tom Murphy Systems Architect Wells Fargo HCFG - CORE Deal Decisioning Platform 800 S. Jordan Creek Parkway | West Des Moines, IA 50266 MAC: X2301-01B Office: 515 324 4853 | Mobile: 515 423 4334 tom.e.murphy(a)wellsfargo.com<mailto:tom.e.murphy@wellsfargo.com> This transmission may contain information that is confidential and/or proprietary. If you are not the individual or entity to which it is addressed, note that any review, disclosure, copying, retransmission, or other use is strictly prohibited. If you received this transmission in error, please notify the sender immediately and delete the material from your system.

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enums and subclass under guvnor : no listbox

by Vincent LEGENDRE

Hi all I have two simple classes : The parent class has a field that is an enum. The other class inherits from the parent class. Under Guvnor, everything is OK for the parent class : when I add a constraint on the "enum" field, I see a listbox with enum values But for sub-class, the same field has no listbox, but only a free value text input. Can you confirm this is a bug? I use Guvnor 5.2.Final. Thanks ! The code : public enum Status { OK , KO , UNKNOWN ; } public class MotherClass { private Status status ; // and corresponding get/set enum Status { OK , KO , UNKNOWN ; } public class MotherClass { private Status status ; // and corresponding get/set OK , KO , UNKNOWN ; } public class MotherClass { private Status status ; // and corresponding get/set public class MotherClass { private Status status ; // and corresponding get/set private Status status ; // and corresponding get/set } public class SubClass extends MotherClass { private String message ; // and corresponding get/set } class SubClass extends MotherClass { private String message ; // and corresponding get/set } private String message ; // and corresponding get/set }

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Deprecated Drools packages?

by Melton, Michael P CTR SPAWARSYSCEN-ATLANTIC, 01200

I keep seeing mentioned on the mailing list packages which have been deprecated (or are not part of the "stable" release), but I have not seen any javadocs or other documentation (and google has been no help) indicating *which* packages I should avoid using. Every time Eclipse gives me a choice between two packages for a Drools class, I am unsure which one to pick. Apologies if I've missed something obvious, but can someone educate me? Thanks! Mike

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Reclaiming memory usage

by Chris Richmond

Hello I am performing a simple test of injecting an event every 1 millisecond like so: for (int x = 0; x < 100000; x++){ DataReading dr = new DataReading("Reading " + x, 12.0f); myStream.insert(dr); ksession.fireAllRules(); Thread.sleep(1); } The rule that evaluates this is simple. It basically delays "then" for 3s to see if a followup reading is inserted and makes sure that no ReconfigEvent is active(5s expiration). So if a reading comes in and a followup reading is not inserted within 3 seconds and there is is not an existing ReconfigEvent event alive, then it should output and insert a ReconfigEvent, essentially disabling any DataReading action on those events for the next 5 seconds or so. This all works just fine as expected. My question is, how come I don't get memory back when all 100,000 of my events have been inserted. Memory goes up slowly over the course of insertions, which I can understand, but once that loop is finished, memory never reduces, so essentially, the application will eventually run out of memory after some time. I should not have to explicitly remove/retract events should I? Shouldn't they be removed from working memory as soon as they are no longer viable? What should I be doing to reclaim memory from the session/knowledgebase? I have included the full Main program here and the Sample.drl file below it. ************FusionMain.java***************** package com.sample; import org.drools.KnowledgeBase; import org.drools.KnowledgeBaseConfiguration; import org.drools.KnowledgeBaseFactory; import org.drools.builder.KnowledgeBuilder; import org.drools.builder.KnowledgeBuilderError; import org.drools.builder.KnowledgeBuilderErrors; import org.drools.builder.KnowledgeBuilderFactory; import org.drools.builder.ResourceType; import org.drools.conf.EventProcessingOption; import org.drools.io.ResourceFactory; import org.drools.logger.KnowledgeRuntimeLogger; import org.drools.logger.KnowledgeRuntimeLoggerFactory; import org.drools.runtime.KnowledgeSessionConfiguration; import org.drools.runtime.StatefulKnowledgeSession; import org.drools.runtime.conf.ClockTypeOption; import org.drools.runtime.rule.WorkingMemoryEntryPoint; public class FusionMain { @SuppressWarnings("restriction") public static void main(String[] args) { try { KnowledgeSessionConfiguration config = KnowledgeBaseFactory.newKnowledgeSessionConfiguration(); config.setOption( ClockTypeOption.get("realtime") ); KnowledgeBase kbase; kbase = readKnowledgeBase(); StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession(); WorkingMemoryEntryPoint myStream = ksession.getWorkingMemoryEntryPoint("My Stream"); for (int x = 0; x < 100000; x++){ DataReading dr = new DataReading("Reading " + x, 12.0f); myStream.insert(dr); ksession.fireAllRules(); Thread.sleep(1); } } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } @SuppressWarnings("restriction") private static KnowledgeBase readKnowledgeBase() throws Exception { KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder(); kbuilder.add(ResourceFactory.newClassPathResource("Sample.drl"), ResourceType.DRL); KnowledgeBuilderErrors errors = kbuilder.getErrors(); if (errors.size() > 0) { for (KnowledgeBuilderError error: errors) { System.err.println(error); } throw new IllegalArgumentException("Could not parse knowledge."); } KnowledgeBaseConfiguration kbConfig = KnowledgeBaseFactory.newKnowledgeBaseConfiguration(); kbConfig.setOption( EventProcessingOption.STREAM ); KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase(kbConfig); kbase.addKnowledgePackages(kbuilder.getKnowledgePackages()); return kbase; } } *********Sample.drl************************* package com.sample import java.util.Date; declare DataReading @role( event ) end declare ReconfigEvent @role( event ) @expires ( 5s ) end rule "Wait for follup reading or no config" //lock-on-active when $dr: DataReading(reading > 10.0) from entry-point "My Stream" not(DataReading(reading < 10.0, this after[0s,3s] $dr) from entry-point "My Stream") not(ReconfigEvent() from entry-point "My Stream") then System.err.println("Action: " + new Date(System.currentTimeMillis())); System.err.println("Data reading " + $dr.getName() + " > 10"); ReconfigEvent rce = new ReconfigEvent(); entryPoints["My Stream"].insert( rce ); end

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counting Facts

by pamerida

Hi everyone, I need to perform a count of facts, but my problem is that the facts are nested inside other facts My model would be something like this a class called Cuscar that is like the main class that contains the other facts inside the class Cuscar I have a list called segmentGroup7 (private List<SegmentGroup7> segmentGroup7), and inside each SegmentGroup7 I have another list (List<SegmentGroup8> segmentGroup8) with this rule Im able to get all the facts of the type segmentGroup8 $cuscar : Cuscar(); $group7: SegmentGroup7() from $cuscar.segmentGroup7; $group8 : SegmentGroup8() from $group7.segmentGroup8; but I would like to count the number of facts, any idea how?? thanks so much for your help :) -- View this message in context: http://drools.46999.n3.nabble.com/counting-Facts-tp3192513p3192513.html Sent from the Drools: User forum mailing list archive at Nabble.com.

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Re: [rules-users] How to use OR-Operator

by DroolersEye

you can create two rule... rule "or_conjunction_one" when eventA : EventA(status == true) from entry-point "StreamA" then System.out.println("A"); end rule "or_conjunction_two" when eventB : EventB(status == true) from entry-point "StreamB" then System.out.println("B"); end ----- with kind regards, -- View this message in context: http://drools.46999.n3.nabble.com/How-to-use-OR-Operator-tp3197784p319811... Sent from the Drools: User forum mailing list archive at Nabble.com.

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rules-users July 2011