[jboss-jira] [JBoss JIRA] (DROOLS-4525) NullPointerException in MatchesOperator with executable model

[Mario Fusco (Jira)]

     [ https://issues.jboss.org/browse/DROOLS-4525?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mario Fusco updated DROOLS-4525:
--------------------------------
    Sprint: 2019 Week 35-37


> NullPointerException in MatchesOperator with executable model
> -------------------------------------------------------------
>
>                 Key: DROOLS-4525
>                 URL: https://issues.jboss.org/browse/DROOLS-4525
>             Project: Drools
>          Issue Type: Bug
>          Components: core engine, executable model
>    Affects Versions: 7.26.0.Final
>            Reporter: Martin Weiler
>            Assignee: Mario Fusco
>            Priority: Major
>
> A rule has the following constraint:
> {noformat}
> $p : Person(likes matches "^[0-9]{3}.*$")
> {noformat}
> If a Person object is inserted into the working memory with the {{likes}} field unset, this results in a NullPointerException when using the executable model:
> {noformat}
> java.lang.RuntimeException: java.lang.RuntimeException: java.lang.NullPointerException
> 	at org.drools.modelcompiler.constraints.ConstraintEvaluator.evaluate(ConstraintEvaluator.java:77)
> 	at org.drools.modelcompiler.constraints.LambdaConstraint.isAllowed(LambdaConstraint.java:108)
> 	at org.drools.core.reteoo.AlphaNode.assertObject(AlphaNode.java:139)
> 	at org.drools.core.reteoo.CompositeObjectSinkAdapter.doPropagateAssertObject(CompositeObjectSinkAdapter.java:501)
> 	at org.drools.core.reteoo.CompositeObjectSinkAdapter.propagateAssertObject(CompositeObjectSinkAdapter.java:399)
> 	at org.drools.core.reteoo.ObjectTypeNode.propagateAssert(ObjectTypeNode.java:324)
> 	at org.drools.core.phreak.PropagationEntry$Insert.propagate(PropagationEntry.java:161)
> 	at org.drools.core.phreak.PropagationEntry$Insert.execute(PropagationEntry.java:166)
> 	at org.drools.core.phreak.SynchronizedPropagationList.flush(SynchronizedPropagationList.java:96)
> 	at org.drools.core.phreak.SynchronizedPropagationList.flush(SynchronizedPropagationList.java:91)
> 	at org.drools.core.common.DefaultAgenda.fireLoop(DefaultAgenda.java:1046)
> 	at org.drools.core.common.DefaultAgenda.internalFireAllRules(DefaultAgenda.java:1009)
> 	at org.drools.core.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1001)
> 	at org.drools.core.impl.StatefulKnowledgeSessionImpl.internalFireAllRules(StatefulKnowledgeSessionImpl.java:1330)
> 	at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1321)
> 	at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1305)
> 	at org.drools.modelcompiler.CompilerTest.testMatchesOnNullString(CompilerTest.java:2003)
> ...
> Caused by: java.lang.RuntimeException: java.lang.NullPointerException
> 	at org.drools.model.DSL.eval(DSL.java:715)
> 	at defaultpkg.RulesD6C04ACCB409930058C1DE751731F5EDRuleMethods0.lambda$rule_R2$8e86359d$1(RulesD6C04ACCB409930058C1DE751731F5EDRuleMethods0.java:39)
> 	at org.drools.model.functions.Predicate1$Impl.test(Predicate1.java:18)
> 	at org.drools.model.constraints.SingleConstraint1.lambda$getPredicate$8a56b796$1(SingleConstraint1.java:40)
> 	at org.drools.modelcompiler.constraints.ConstraintEvaluator.evaluate(ConstraintEvaluator.java:73)
> 	... 49 more
> Caused by: java.lang.NullPointerException
> 	at org.drools.model.operators.MatchesOperator.eval(MatchesOperator.java:27)
> 	at org.drools.model.operators.MatchesOperator.eval(MatchesOperator.java:21)
> 	at org.drools.model.functions.Operator$SingleValue.test(Operator.java:41)
> 	at org.drools.model.functions.Operator$SingleValue.test(Operator.java:39)
> 	at org.drools.model.DSL.eval(DSL.java:713)
> 	... 53 more
> {noformat}



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