[jboss-jira] [JBoss JIRA] (DROOLS-1386) NPE in org.drools.core.common.TupleSetsImpl.setNextTuple

[Arkady Syamtomov (JIRA)]

    [ https://issues.jboss.org/browse/DROOLS-1386?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13436111#comment-13436111 ] 

Arkady Syamtomov commented on DROOLS-1386:
------------------------------------------

[~mfusco] I created a reproducible test case for the issue. Please, check out the spring boot project from GitHub: https://github.com/icejumper/droolsstage.git

In order to reproduce the issue, it's sufficient to run from the project folder:

1. mvn clean package
2. java -jar target/drools-stage-1.0-SNAPSHOT.war  

In the browser: http://localhost:8080 just run the 

1. /deployRule/  with pre-populated drl: this will deploy the specified rule to a running instance of the rule engine. Should deploy Ok. 
2. /evaluate/ this results in NPE like reported in the body of the issue

Please be aware, that the project uses drools 7.0.0.Final You may try 6.5.0.Final (changing in the pom), but the result is the same.
With 6.3.0.Final the issue disappears and the rule evaluation runs correctly. 



> NPE in org.drools.core.common.TupleSetsImpl.setNextTuple
> --------------------------------------------------------
>
>                 Key: DROOLS-1386
>                 URL: https://issues.jboss.org/browse/DROOLS-1386
>             Project: Drools
>          Issue Type: Bug
>    Affects Versions: 6.5.0.Final, 7.0.0.Beta4
>            Reporter: Arkady Syamtomov
>            Assignee: Mario Fusco
>            Priority: Critical
>
> In our integration tests which were perfectly running with drools 6.3.0.Final, now we have failures with the following exception during the rules evaluation:
> java.lang.NullPointerException: null
> 	at org.drools.core.common.TupleSetsImpl.setNextTuple(TupleSetsImpl.java:349) ~[drools-core-6.5.0.Final-redhat-2.jar:6.5.0.Final-redhat-2]
> 	at org.drools.core.common.TupleSetsImpl.removeUpdate(TupleSetsImpl.java:205) ~[drools-core-6.5.0.Final-redhat-2.jar:6.5.0.Final-redhat-2]
> 	at org.drools.core.common.TupleSetsImpl.addDelete(TupleSetsImpl.java:110) ~[drools-core-6.5.0.Final-redhat-2.jar:6.5.0.Final-redhat-2]
> 	at org.drools.core.reteoo.QueryElementNode$UnificationNodeViewChangedEventListener.rowRemoved(QueryElementNode.java:444) ~[drools-core-6.5.0.Final-redhat-2.jar:6.5.0.Final-redhat-2]
> 	at org.drools.core.phreak.PhreakQueryTerminalNode.doLeftDeletes(PhreakQueryTerminalNode.java:154) ~[drools-core-6.5.0.Final-redhat-2.jar:6.5.0.Final-redhat-2]
> 	at org.drools.core.phreak.PhreakQueryTerminalNode.doNode(PhreakQueryTerminalNode.java:46) ~[drools-core-6.5.0.Final-redhat-2.jar:6.5.0.Final-redhat-2]
> 	at org.drools.core.phreak.RuleNetworkEvaluator.innerEval(RuleNetworkEvaluator.java:282) ~[drools-core-6.5.0.Final-redhat-2.jar:6.5.0.Final-redhat-2]
> 	at org.drools.core.phreak.RuleNetworkEvaluator.evalStackEntry(RuleNetworkEvaluator.java:198) ~[drools-core-6.5.0.Final-redhat-2.jar:6.5.0.Final-redhat-2]
> 	at org.drools.core.phreak.RuleNetworkEvaluator.outerEval(RuleNetworkEvaluator.java:141) ~[drools-core-6.5.0.Final-redhat-2.jar:6.5.0.Final-redhat-2]
> 	at org.drools.core.phreak.RuleNetworkEvaluator.evaluateNetwork(RuleNetworkEvaluator.java:94) ~[drools-core-6.5.0.Final-redhat-2.jar:6.5.0.Final-redhat-2]
> 	at org.drools.core.phreak.RuleExecutor.reEvaluateNetwork(RuleExecutor.java:194) ~[drools-core-6.5.0.Final-redhat-2.jar:6.5.0.Final-redhat-2]
> 	at org.drools.core.phreak.RuleExecutor.evaluateNetworkAndFire(RuleExecutor.java:73) ~[drools-core-6.5.0.Final-redhat-2.jar:6.5.0.Final-redhat-2]
> 	at org.drools.core.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:970) ~[drools-core-6.5.0.Final-redhat-2.jar:6.5.0.Final-redhat-2]
> 	at org.drools.core.common.DefaultAgenda.fireLoop(DefaultAgenda.java:1312) ~[drools-core-6.5.0.Final-redhat-2.jar:6.5.0.Final-redhat-2]
> 	at org.drools.core.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1251) ~[drools-core-6.5.0.Final-redhat-2.jar:6.5.0.Final-redhat-2]
> 	at org.drools.core.impl.StatefulKnowledgeSessionImpl.internalFireAllRules(StatefulKnowledgeSessionImpl.java:1364) ~[drools-core-6.5.0.Final-redhat-2.jar:6.5.0.Final-redhat-2]
> 	at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1355) ~[drools-core-6.5.0.Final-redhat-2.jar:6.5.0.Final-redhat-2]
> 	at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1346) ~[drools-core-6.5.0.Final-redhat-2.jar:6.5.0.Final-redhat-2]
> 	at org.drools.core.command.runtime.rule.FireAllRulesCommand.execute(FireAllRulesCommand.java:109) ~[drools-core-6.5.0.Final-redhat-2.jar:6.5.0.Final-redhat-2]
> 	at org.drools.core.command.runtime.rule.FireAllRulesCommand.execute(FireAllRulesCommand.java:36) ~[drools-core-6.5.0.Final-redhat-2.jar:6.5.0.Final-redhat-2]
> 	at org.drools.core.command.runtime.BatchExecutionCommandImpl.execute(BatchExecutionCommandImpl.java:137) ~[drools-core-6.5.0.Final-redhat-2.jar:6.5.0.Final-redhat-2]
> 	at org.drools.core.command.runtime.BatchExecutionCommandImpl.execute(BatchExecutionCommandImpl.java:51) ~[drools-core-6.5.0.Final-redhat-2.jar:6.5.0.Final-redhat-2]
> 	at org.drools.core.impl.StatelessKnowledgeSessionImpl.execute(StatelessKnowledgeSessionImpl.java:254) ~[drools-core-6.5.0.Final-redhat-2.jar:6.5.0.Final-redhat-2]



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