Questions Tagged With ruleengine

Can we configure location for Rules in ivy?

trungdv — Mon, 04 Jun 2018 02:09:18 -0400

Hi ivyteam

I'm using ivy 7.0.3 with rules functionality. By default the rule will be stored in <project source>\rules . My question is: Can we configure to load rule from external folder?

Thanks

Different mechanism of loading rule between Designer and Engine

trungdv — Mon, 10 Jul 2017 06:32:38 -0400

Hi all

I have a project that using api ivy.rules.engine to execute Drool rule, i just found a difference between Designer and Engine about the way it load rule package.

Here is folder rule i have:

I have two main folders: salaryReference and salaryCalculation, each of them has a child package called demo.

Here is the code that i load those rule bases:

//salaryRuleBase and basicSalaryRuleBase are IRuleBase type

in.salaryRuleBase = ivy.rules.engine.createRuleBase();
in.salaryRuleBase.loadRulesFromNamespace("salaryCalculation");

in.basicSalaryRuleBase = ivy.rules.engine.createRuleBase();
in.basicSalaryRuleBase.loadRulesFromNamespace("salaryReference");

Those two rule base only need to load main package (not childs). To be sure that it load correct package, i put two test rules on child packages, ex:

import ch.ivyteam.ivy.environment.Ivy;

rule "SalaryCal.demo"
when
then
    Ivy.log().info("=========Rule SalaryCal.demo");
end

and

import ch.ivyteam.ivy.environment.Ivy;

rule "SalaryRef.demo"
when
then
    Ivy.log().info("=========Rule SalaryRef.demo");
end

When executing this code on Designer (Axon ivy 6.3.0.52421), it work exactly as i want. only rules from salaryCalculation/basic.drl and salaryReference/default.drl are loaded and executed. I don't see any logs from test rules.

But when i deploy this project to server(same version with Designer) , i saw this line:

That a big trouble in our real project because we separate rule by packages and somehow expect rule engine will only load package that we set to them, non recursively.

Do you know why do we have this difference? it's quite confused and strange to us

Here is demo project if you want to try it out

Thanks

RuleEngine - Use more then one object within one decision table.

Stefan13 — Tue, 16 May 2017 08:35:13 -0400

In your example from the ivy demos, you show how to apply an decision table.

/*
 * We need to create a rule session to execute the rules.
 * 
 * 'out.member' is the input object that stores the information of a member.
 * This object will be modified during the rule execution.
 */
in.ruleBaseForDecisionTable.createSession().execute(out.member);

Is it also possible, to use more the one object, for example:

in.ruleBaseForDecisionTable.createSession().execute(out.member1,out.member2,out.member3);

Or is that not provided?

regards, Stefan

java.lang.NoClassDefFoundError: ch/ivyteam/ivy/job/IJobManager when creating instance of Rule Engine in jUnit

trungdv — Thu, 09 Feb 2017 10:28:57 -0500

Hi all

Now i'm using ivy 6.3.0 and also use rule engine was already embedded inside, everything was fine when i use in ivy environment. but when i want to write unit test for the rule (.drl), i got exception in this line:

IRuleBase ruleBase = Rules.engine().createRuleBase()

Here is exception:

com.google.common.util.concurrent.ExecutionError: com.google.common.util.concurrent.ExecutionError: com.google.common.util.concurrent.ExecutionError: com.google.common.util.concurrent.ExecutionError: com.google.common.util.concurrent.ExecutionError: com.google.common.util.concurrent.ExecutionError: com.google.common.util.concurrent.ExecutionError: com.google.common.util.concurrent.ExecutionError: java.lang.NoClassDefFoundError: ch/ivyteam/ivy/job/IJobManager
    at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2199)
    at com.google.common.cache.LocalCache.get(LocalCache.java:3934)
    at com.google.common.cache.LocalCache.getOrLoad(LocalCache.java:3938)
    at com.google.common.cache.LocalCache$LocalLoadingCache.get(LocalCache.java:4821)
    at com.google.common.cache.LocalCache$LocalLoadingCache.getUnchecked(LocalCache.java:4827)
    at com.google.inject.internal.FailableCache.get(FailableCache.java:48)
    at com.google.inject.internal.ConstructorInjectorStore.get(ConstructorInjectorStore.java:50)
    at com.google.inject.internal.ConstructorBindingImpl.initialize(ConstructorBindingImpl.java:136)
    at com.google.inject.internal.InjectorImpl.initializeJitBinding(InjectorImpl.java:547)
    at com.google.inject.internal.InjectorImpl.createJustInTimeBinding(InjectorImpl.java:884)
    at com.google.inject.internal.InjectorImpl.createJustInTimeBindingRecursive(InjectorImpl.java:805)
    at com.google.inject.internal.InjectorImpl.getJustInTimeBinding(InjectorImpl.java:282)
    at com.google.inject.internal.InjectorImpl.getBindingOrThrow(InjectorImpl.java:214)
    at com.google.inject.internal.ProvidedByInternalFactory.initialize(ProvidedByInternalFactory.java:57)
    at com.google.inject.internal.LinkedProviderBindingImpl.initialize(LinkedProviderBindingImpl.java:76)
    at com.google.inject.internal.InjectorImpl.initializeJitBinding(InjectorImpl.java:547)
    at com.google.inject.internal.InjectorImpl.createJustInTimeBinding(InjectorImpl.java:884)
    at com.google.inject.internal.InjectorImpl.createJustInTimeBindingRecursive(InjectorImpl.java:805)
    at com.google.inject.internal.InjectorImpl.getJustInTimeBinding(InjectorImpl.java:282)
    at com.google.inject.internal.InjectorImpl.getBindingOrThrow(InjectorImpl.java:214)
    at com.google.inject.internal.InjectorImpl.getProviderOrThrow(InjectorImpl.java:1006)
    at com.google.inject.internal.InjectorImpl.getProvider(InjectorImpl.java:1038)
    at com.google.inject.internal.InjectorImpl.getProvider(InjectorImpl.java:1001)
    at com.google.inject.internal.InjectorImpl.getInstance(InjectorImpl.java:1051)
    at ch.ivyteam.di.restricted.DiInjector.getInstance(DiInjector.java:43)
    at ch.ivyteam.ivy.rule.engine.internal.RuleEngine.createRuleBase(RuleEngine.java:14)
    at ch.axonivy.fintech.standard.guiframework.util.RuleStore.getStatelessRuleSession(RuleStore.java:64)
    at ch.axonivy.fintech.standard.rulesengine.DroolsService.applyBusinessRules(DroolsService.java:51)
    at ch.axonivy.fintech.standard.rulesengine.DroolsRuleEngine.executeBusinessRule(DroolsRuleEngine.java:71)
    at ch.axonivy.fintech.standard.rulesengine.BusinessRuleProvider.executeBusinessRule(BusinessRuleProvider.java:49)
    at ch.axonivy.fintech.standard.guiframework.core.RuleProcessor.executeBusinessRule(RuleProcessor.java:76)
    at ch.axonivy.fintech.standard.guiframework.workflow.BaseGuiWorkflow.initGlobalVar(BaseGuiWorkflow.java:316)
    at ch.axonivy.fintech.standard.qualification.processor.QualificationBusinessDecisionProcessor.initGlobalVarIfNeeded(QualificationBusinessDecisionProcessor.java:28)
    at ch.axonivy.fintech.mortgage.qualification.service.QualificationBusinessService.proceedQualificationDecision(QualificationBusinessService.java:22)
    at ch.axonivy.fintech.soba.test.integration.SobaQualificationBusinessServiceTest.should_return_dossier_status_GREEN_when_all_check_result_GREEN(SobaQualificationBusinessServiceTest.java:47)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
Caused by: com.google.common.util.concurrent.ExecutionError: com.google.common.util.concurrent.ExecutionError: com.google.common.util.concurrent.ExecutionError: com.google.common.util.concurrent.ExecutionError: com.google.common.util.concurrent.ExecutionError: com.google.common.util.concurrent.ExecutionError: com.google.common.util.concurrent.ExecutionError: java.lang.NoClassDefFoundError: ch/ivyteam/ivy/job/IJobManager
    at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2199)
    at com.google.common.cache.LocalCache.get(LocalCache.java:3934)
    at com.google.common.cache.LocalCache.getOrLoad(LocalCache.java:3938)
    at com.google.common.cache.LocalCache$LocalLoadingCache.get(LocalCache.java:4821)
    at com.google.common.cache.LocalCache$LocalLoadingCache.getUnchecked(LocalCache.java:4827)
    at com.google.inject.internal.FailableCache.get(FailableCache.java:48)
    at com.google.inject.internal.MembersInjectorStore.get(MembersInjectorStore.java:68)
    at com.google.inject.internal.ConstructorInjectorStore.createConstructor(ConstructorInjectorStore.java:74)
    at com.google.inject.internal.ConstructorInjectorStore.access$000(ConstructorInjectorStore.java:29)
    at com.google.inject.internal.ConstructorInjectorStore$1.create(ConstructorInjectorStore.java:37)
    at com.google.inject.internal.ConstructorInjectorStore$1.create(ConstructorInjectorStore.java:33)
    at com.google.inject.internal.FailableCache$1.load(FailableCache.java:37)
    at com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3524)
    at com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2317)
    at com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2280)
    at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2195)
    ... 57 more
Caused by: com.google.common.util.concurrent.ExecutionError: com.google.common.util.concurrent.ExecutionError: com.google.common.util.concurrent.ExecutionError: com.google.common.util.concurrent.ExecutionError: com.google.common.util.concurrent.ExecutionError: com.google.common.util.concurrent.ExecutionError: java.lang.NoClassDefFoundError: ch/ivyteam/ivy/job/IJobManager
    at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2199)
    at com.google.common.cache.LocalCache.get(LocalCache.java:3934)
    at com.google.common.cache.LocalCache.getOrLoad(LocalCache.java:3938)
    at com.google.common.cache.LocalCache$LocalLoadingCache.get(LocalCache.java:4821)
    at com.google.common.cache.LocalCache$LocalLoadingCache.getUnchecked(LocalCache.java:4827)
    at com.google.inject.internal.FailableCache.get(FailableCache.java:48)
    at com.google.inject.internal.ConstructorInjectorStore.get(ConstructorInjectorStore.java:50)
    at com.google.inject.internal.ConstructorBindingImpl.initialize(ConstructorBindingImpl.java:136)
    at com.google.inject.internal.InjectorImpl.initializeJitBinding(InjectorImpl.java:547)
    at com.google.inject.internal.InjectorImpl.createJustInTimeBinding(InjectorImpl.java:884)
    at com.google.inject.internal.InjectorImpl.createJustInTimeBindingRecursive(InjectorImpl.java:805)
    at com.google.inject.internal.InjectorImpl.getJustInTimeBinding(InjectorImpl.java:282)
    at com.google.inject.internal.InjectorImpl.getBindingOrThrow(InjectorImpl.java:214)
    at com.google.inject.internal.InjectorImpl.createImplementedByBinding(InjectorImpl.java:749)
    at com.google.inject.internal.InjectorImpl.createUninitializedBinding(InjectorImpl.java:647)
    at com.google.inject.internal.InjectorImpl.createJustInTimeBinding(InjectorImpl.java:882)
    at com.google.inject.internal.InjectorImpl.createJustInTimeBindingRecursive(InjectorImpl.java:805)
    at com.google.inject.internal.InjectorImpl.getJustInTimeBinding(InjectorImpl.java:282)
    at com.google.inject.internal.InjectorImpl.getBindingOrThrow(InjectorImpl.java:214)
    at com.google.inject.internal.SingleFieldInjector.<init>(SingleFieldInjector.java:42)
    at com.google.inject.internal.MembersInjectorStore.getInjectors(MembersInjectorStore.java:131)
    at com.google.inject.internal.MembersInjectorStore.createWithListeners(MembersInjectorStore.java:98)
    at com.google.inject.internal.MembersInjectorStore.access$000(MembersInjectorStore.java:37)
    at com.google.inject.internal.MembersInjectorStore$1.create(MembersInjectorStore.java:45)
    at com.google.inject.internal.MembersInjectorStore$1.create(MembersInjectorStore.java:42)
    at com.google.inject.internal.FailableCache$1.load(FailableCache.java:37)
    at com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3524)
    at com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2317)
    at com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2280)
    at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2195)
    ... 72 more
Caused by: java.lang.ClassNotFoundException: ch.ivyteam.ivy.job.IJobManager
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 238 more

Does anyone know why and is there any ways to write ut test for rules?