[jboss-jira] [JBoss JIRA] (DROOLS-844) Crash when node is deleted from query node

[Mario Fusco (JIRA)]

     [ https://issues.jboss.org/browse/DROOLS-844?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mario Fusco resolved DROOLS-844.
--------------------------------
    Fix Version/s: 6.4.x
       Resolution: Done


We did a number of fixes on this regards. I'm rerunning the reproducer you sent and now I'm not getting any exception, so I believe that the problem you reported is also solved even if at the moment I'm not able to find which specific commit fixed it. 

Please rerun your use case against 6.3.0.Final (or even better master if possible) and confirm if this is ok also for you. I'm closing this ticket for now, but feel free to reopen it in case you will find any other issue.

> Crash when node is deleted from query node
> ------------------------------------------
>
>                 Key: DROOLS-844
>                 URL: https://issues.jboss.org/browse/DROOLS-844
>             Project: Drools
>          Issue Type: Bug
>          Components: core engine
>    Affects Versions: 6.3.0.Beta2
>            Reporter: Fabian Meyer
>            Assignee: Mario Fusco
>            Priority: Critical
>             Fix For: 6.4.x
>
>
> When a left delete is performed on a PhreakQueryNode, the fact handle of the left tuple might be null, resulting in a NullPointerException.
> Exception in thread "Thread-6" java.lang.NullPointerException
> 	at org.drools.core.phreak.PhreakQueryNode.doLeftDeletes(PhreakQueryNode.java:176)
> 	at org.drools.core.phreak.PhreakQueryNode.doNode(PhreakQueryNode.java:46)
> 	at org.drools.core.phreak.RuleNetworkEvaluator.evalQueryNode(RuleNetworkEvaluator.java:460)
> 	at org.drools.core.phreak.RuleNetworkEvaluator.innerEval(RuleNetworkEvaluator.java:360)
> 	at org.drools.core.phreak.RuleNetworkEvaluator.doRiaNode(RuleNetworkEvaluator.java:598)
> 	at org.drools.core.phreak.RuleNetworkEvaluator.evalBetaNode(RuleNetworkEvaluator.java:524)
> 	at org.drools.core.phreak.RuleNetworkEvaluator.innerEval(RuleNetworkEvaluator.java:336)
> 	at org.drools.core.phreak.RuleNetworkEvaluator.outerEval(RuleNetworkEvaluator.java:166)
> 	at org.drools.core.phreak.RuleNetworkEvaluator.evaluateNetwork(RuleNetworkEvaluator.java:123)
> 	at org.drools.core.phreak.RuleExecutor.reEvaluateNetwork(RuleExecutor.java:194)
> 	at org.drools.core.phreak.RuleExecutor.evaluateNetworkAndFire(RuleExecutor.java:73)
> 	at org.drools.core.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:973)
> 	at org.drools.core.common.DefaultAgenda.fireUntilHalt(DefaultAgenda.java:1251)
> 	at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireUntilHalt(StatefulKnowledgeSessionImpl.java:1353)
> 	at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireUntilHalt(StatefulKnowledgeSessionImpl.java:1331)



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