Re: [rules-users] NullPointerException with LeftTupleIndexHashTable.remove()

Can you paste the 3 rules, that cause the issue? We’ll see if we can gleam something from that, while we wait for your unit test. Mark On 16 Feb 2014, at 19:25, nxv <

nxvanderlinden@

> wrote: > Hello, > > I keep trying to migrate drools from 5.5 to 6 on my project. I found a > second regression/issue. I'm trying to produce a unit test for > 6.1.0-SNAPSHOT but I face some difficulties to determine the cause of > this > issue. So I have a drl with 3 rules. I'm a bit disappointed because if > I > switch two rules (without modifying anything, just switch one rule with > another in the drl file), the NPE disappears... > > > Here is the stacktrace: > > java.lang.NullPointerException > at > org.drools.core.util.index.LeftTupleIndexHashTable.remove(LeftTupleIndexHashTable.java:386) > at > org.drools.core.phreak.RuleNetworkEvaluator.doUpdatesReorderLeftMemory(RuleNetworkEvaluator.java:799) > at org.drools.core.phreak.PhreakJoinNode.doNode(PhreakJoinNode.java:38) > at > org.drools.core.phreak.RuleNetworkEvaluator.switchOnDoBetaNode(RuleNetworkEvaluator.java:547) > at > org.drools.core.phreak.RuleNetworkEvaluator.evalBetaNode(RuleNetworkEvaluator.java:533) > at > org.drools.core.phreak.RuleNetworkEvaluator.innerEval(RuleNetworkEvaluator.java:334) > at > org.drools.core.phreak.RuleNetworkEvaluator.outerEval(RuleNetworkEvaluator.java:161) > at > org.drools.core.phreak.RuleNetworkEvaluator.evaluateNetwork(RuleNetworkEvaluator.java:116) > at > org.drools.core.phreak.RuleExecutor.reEvaluateNetwork(RuleExecutor.java:201) > at > org.drools.core.phreak.RuleExecutor.evaluateNetworkAndFire(RuleExecutor.java:68) > at > org.drools.core.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:935) > at > org.drools.core.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1200) > at > org.drools.core.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:952) > at > org.drools.core.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:926) > at > org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:232) > at > org.drools.core.command.runtime.rule.FireAllRulesCommand.execute(FireAllRulesCommand.java:106) > at > org.drools.core.command.runtime.rule.FireAllRulesCommand.execute(FireAllRulesCommand.java:32) > at > org.drools.core.command.runtime.BatchExecutionCommandImpl.execute(BatchExecutionCommandImpl.java:155) > at > org.drools.core.command.runtime.BatchExecutionCommandImpl.execute(BatchExecutionCommandImpl.java:76) > at > org.drools.core.impl.StatelessKnowledgeSessionImpl.execute(StatelessKnowledgeSessionImpl.java:334) > > > > > > -- > View this message in context: > http://drools.46999.n3.nabble.com/NullPointerException-with-LeftTupleInde... > Sent from the Drools: User forum mailing list archive at Nabble.com. > _______________________________________________ > rules-users mailing list >

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