May 2014 - rules-users - Jboss List Archives

Possible bug with incremental compilation

by Federico Bertola

Hi all, executing the test in "drools/drools-compiler/src/test/java/org/drools/compiler/integrationtests/" all goes well except if i write a kmodule xml inside the KieFileSystem. Is this supposed to happen? I cannot add or remove a KieBase during incremental compilation, or I'm doing something dumb? I'm on Ubuntu 12.04 64bit java 1.7.0_55 Heres a simple test case: ######################################### @Test public void shouldRecompileWithNewBases() { String drl1 = "global java.util.List list\n" + "rule R1 when\n" + " $s : String() " + "then\n" + " list.add( \"a\" + $s );" + "end\n"; String drl2 = "global java.util.List list\n" + "rule R2 when\n" + " $s : String() " + "then\n" + " list.add( \"b\" + $s );" + "end\n"; ReleaseId releaseId1 = KieServices.Factory.get().newReleaseId( "it.mine", "test", "1.1"); ReleaseId releaseId2 = KieServices.Factory.get().newReleaseId( "it.mine", "test", "1.2"); KieServices ks = KieServices.Factory.get(); KieModuleModel kproj = ks.newKieModuleModel(); KieBaseModel kieBaseModel1 = kproj.newKieBaseModel("KBase1") .addPackage("it.mine.test"); kieBaseModel1.newKieSessionModel("KSession1").setDefault(true); KieFileSystem kfs = ks.newKieFileSystem(); KieBuilder kieBuilder = ks.newKieBuilder(kfs); kfs.generateAndWritePomXML(releaseId1); kfs.write("src/main/resources/it/mine/test/rule.drl", drl1); // FIXME: without this line all goes well. kfs.writeKModuleXML(kproj.toXML()); kieBuilder.buildAll(); assertEquals(0, kieBuilder.getResults().getMessages().size()); KieModule kieModule = kieBuilder.getKieModule(); assertEquals(releaseId1, kieModule.getReleaseId()); KieContainer kc = ks.newKieContainer(releaseId1); KieSession ksession = kc.newKieSession(); List<String> list = new ArrayList<String>(); ksession.setGlobal("list", list); ksession.insert("Foo"); ksession.fireAllRules(); list.clear(); kfs.generateAndWritePomXML(releaseId2); kfs.write("src/main/resources/it/mine/test2/rule.drl", drl2); IncrementalResults results = ((InternalKieBuilder) kieBuilder) .incrementalBuild(); assertEquals(0, results.getAddedMessages().size()); kieModule = kieBuilder.getKieModule(); assertEquals(releaseId2, kieModule.getReleaseId()); Results updateResults = kc.updateToVersion(releaseId2); assertEquals(0, updateResults.getMessages().size()); } ######################################### Heres the stack trace: ######################################### java.lang.NullPointerException at org.drools.compiler.kie.util.ChangeSetBuilder.build(ChangeSetBuilder.java:51) at org.drools.compiler.kie.builder.impl.KieContainerImpl.update(KieContainerImpl.java:126) at org.drools.compiler.kie.builder.impl.KieContainerImpl.updateToVersion(KieContainerImpl.java:105) at it.mine.IncrementalCompilationTest.shouldRecompileWithNewBases(IncrementalCompilationTest.java:165) ######################################### Thanks for the help! Cheers, Federico.

11 years, 9 months

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Using dynamic package names with Drools 6.0 Spring integration.

by Sunny Singh

Hello, I am trying to integrate Drools 6.0 with my application using Drools-Spring integration features. Issues faced: I need to define the knowledge bases in a spring context XML and make the package names to be dynamically passed into the knowledge bases using Spring Expression Language when the Spring container is created at the start-up. But, the package names are not being injected into the knowledge base when it is created by Drools framework. If I define the package names and hard-code them into the "packages" property of the kbase tag, it works. Could you please let me know if there is a way to make the package names being passed dynamically passed into the "packages" property of the kbase tag. This is because my client application would supply the packages names when the knowledge bases are setup and I am trying not to hard-code these. XML Configuration: <bean id="packageRepository" class="test.PackageRepository"> <property name="packages" value="packageA,packageB"/> </bean> <kie:kmodule id="kmodule"> <kie:kbase name="testKnowledgeBase" packages="#{packageRepository.packages}"/> </kie:kmodule> Thanks!

11 years, 9 months

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Using git-p4 with workbench

by Steinmetz, Jean-Philippe

Hi, Has anyone tried using a VCS bridge for git with the Drools 6 workbench? Specifically I am interested in git-p4 so that I can access an existing maven project that is currently stored in Perforce. Is this use case supported? Thanks in advance, Jean-Philippe

11 years, 9 months

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Not and forall operator behaviour

by rogerL

Are the two following statements not equivalent? forall($msg:Message() Message(this==$msg, sent==true, status!=State._INITIALIZED) ) not( Message(sent==false, status==State._INITIALIZED) ) My understanding is that they both ensure that there are no Message objects in WM with property 'sent' set to false and property 'status' set to State._INITIALIZED. In my situation, the 'forall' approach is working as expected, the 'not' approach fires once (when there are no Message objects in WM) and never again. Appreciate if anyone could shed light on this. -- View this message in context: http://drools.46999.n3.nabble.com/Not-and-forall-operator-behaviour-tp402... Sent from the Drools: User forum mailing list archive at Nabble.com.

11 years, 9 months

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@Modifies Inheritance

by gboro54

Curiosity question: Why does the @Modifies not have the @Inherited annotation, allowing subclasses to inherit a method which may modify something in the parent? Perhaps I have a misunderstanding of annotations in this case but still am just wondering. -- View this message in context: http://drools.46999.n3.nabble.com/Modifies-Inheritance-tp4029757.html Sent from the Drools: User forum mailing list archive at Nabble.com.

11 years, 9 months

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Re: [rules-users] Compilation errors in Drools examples

by J Rose

Any solution to this item? I am having the same errors. -- View this message in context: http://drools.46999.n3.nabble.com/Compilation-errors-in-Drools-examples-t... Sent from the Drools: User forum mailing list archive at Nabble.com.

11 years, 9 months

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Syntax Question on an or condition

by Chidambaran Subramanian

rule "Test" dialect "mvel" when ( Customer( age == 50 ) or Deal( amount == 30 ) ) then Customer.setAge( "40" ); update( Customer ); Customer.setPlace( "Test" ); update( Customer ); end How to do I tag both Customer and Deal on the 1st condition , to enable me to

11 years, 9 months

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How do I access objects in a top level or condition?

by Chidambaran Subramanian

rule "Test" dialect "mvel" when ( Customer( age == 50 ) or Deal( amount == 30 ) ) then Customer.setAge( "40" ); update( Customer ); Customer.setPlace( "Test" ); update( Customer ); end Appreciate any help in this regard. Regards Chiddu

11 years, 9 months

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Cannot issue fireUntilHalt when using persisted session

by rogerL

Due to an issue with reloading persisted sessions that contained a cron timer rule, I upgraded to 6.1.0.Beta3. Now I'm encountering a problem with a threaded fireUntilHalt command (cannot be issued on a persisted session). Exception in thread "SimpleAsyncTaskExecutor-1" java.lang.UnsupportedOperationException: Command session.fireUntilHalt(); cannot be issued on a persisted session at org.drools.persistence.SingleSessionCommandService$TransactionInterceptor.execute(SingleSessionCommandService.java:474) at org.drools.persistence.SingleSessionCommandService.execute(SingleSessionCommandService.java:353) at org.drools.core.command.impl.CommandBasedStatefulKnowledgeSession.fireUntilHalt(CommandBasedStatefulKnowledgeSession.java:272)... It worked without issue in 6.0.1.Final. Though I suspect not, is this expected behaviour? Alternately, are there configuration/other changes that must be implemented. Libs spring 4.0.1 kie, drools, jbpm 6.1.0.Beta3 hibernate 4.3.4 -- View this message in context: http://drools.46999.n3.nabble.com/Cannot-issue-fireUntilHalt-when-using-p... Sent from the Drools: User forum mailing list archive at Nabble.com.

11 years, 9 months

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Excel Syntax in Decision Tables

by crosbis2

Hi, I have a rule i created in Guvnor which works fine (see below) But i can not create and import the same rule from a decision table. I can not get the syntax to match when i upload the xls and view source. Everything below "when" i have as a Condition Everything below "then" is an Action Line 7: will not import. How do you create empty brackets in excel? Line 9: how do i write this using the pattern / constraint approach in excel? same with Line 11 and 12? Any help would be greatly appreciated. 1. | rule "DecisionA_OptionsAndFutures" 2. | salience 0 3. | dialect "mvel" 4. | when 5. | SCOProduct( productBookingPointId == 1 , productTypeId in ( 4, 5, 20 ) ) 6. | RuleSet( ruleSetName == "SCODecisionPointA" ) 7. | taskTemplates : TaskTemplates( ) 8. | then 9. | TaskTemplate TaskTemplate1 = new TaskTemplate(); 10. | TaskTemplate1.setId( 12038 ); 11. | insert( TaskTemplate1 ); 12. | taskTemplates.addTaskTemplateIfNew( TaskTemplate1 ); 13. | end -- View this message in context: http://drools.46999.n3.nabble.com/Excel-Syntax-in-Decision-Tables-tp40295... Sent from the Drools: User forum mailing list archive at Nabble.com.

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rules-users May 2014