[jboss-jira] [JBoss JIRA] (DROOLS-998) NullPointerException at org.drools.core.common.LeftTupleSetsImpl.removeInsert(LeftTupleSetsImpl.java:141)

[Christian Spurk (JIRA)]

Christian Spurk created DROOLS-998:
--------------------------------------

             Summary: NullPointerException at org.drools.core.common.LeftTupleSetsImpl.removeInsert(LeftTupleSetsImpl.java:141)
                 Key: DROOLS-998
                 URL: https://issues.jboss.org/browse/DROOLS-998
             Project: Drools
          Issue Type: Bug
          Components: core engine
    Affects Versions: 6.3.0.Final
         Environment: OpenJDK Runtime Environment (IcedTea 2.6.3) (7u91-2.6.3-0ubuntu0.14.04.1)
            Reporter: Christian Spurk
            Assignee: Mario Fusco


The following {{NullPointerException}} occurs for the following rule:

{code}
Exception in thread "main" java.lang.NullPointerException
	at org.drools.core.common.LeftTupleSetsImpl.removeInsert(LeftTupleSetsImpl.java:141)
	at org.drools.core.common.LeftTupleSetsImpl.addDelete(LeftTupleSetsImpl.java:80)
	at org.drools.core.phreak.PhreakAccumulateNode.doLeftDeletes(PhreakAccumulateNode.java:603)
	at org.drools.core.phreak.PhreakAccumulateNode.doNode(PhreakAccumulateNode.java:65)
	at org.drools.core.phreak.RuleNetworkEvaluator.switchOnDoBetaNode(RuleNetworkEvaluator.java:565)
	at org.drools.core.phreak.RuleNetworkEvaluator.evalBetaNode(RuleNetworkEvaluator.java:536)
	at org.drools.core.phreak.RuleNetworkEvaluator.evalNode(RuleNetworkEvaluator.java:372)
	at org.drools.core.phreak.RuleNetworkEvaluator.innerEval(RuleNetworkEvaluator.java:332)
	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.fire(RuleExecutor.java:142)
	at org.drools.core.phreak.RuleExecutor.evaluateNetworkAndFire(RuleExecutor.java:74)
	at org.drools.core.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:978)
	at org.drools.core.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1292)
	at org.drools.core.impl.StatefulKnowledgeSessionImpl.internalFireAllRules(StatefulKnowledgeSessionImpl.java:1294)
	at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1281)
	at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1260)
	at org.drools.core.command.runtime.rule.FireAllRulesCommand.execute(FireAllRulesCommand.java:109)
	at org.drools.core.command.runtime.rule.FireAllRulesCommand.execute(FireAllRulesCommand.java:34)
	at org.drools.core.impl.StatelessKnowledgeSessionImpl.execute(StatelessKnowledgeSessionImpl.java:292)
	at Test.main(Test.java:13)
{code}

{code}
rule "test"
when
    not( String() )
    accumulate(
        Long();
        sum(1)
    )
    ( Boolean() or not( Float() ) )
then
    insert(new String());
end
{code}

(Please ignore the nonsensical rule; I simply couldn't reproduce this issue in any better way without providing you my larger system where the (more complex) rule makes more sense.)

I'm using a default KIE configuration to load the rule:

{{kmodule.xml}}:
{code}
<?xml version="1.0" encoding="UTF-8"?>
<kmodule xmlns="http://jboss.org/kie/6.0.0/kmodule" />
{code}

{{Test.java}}:
{code}
import org.kie.api.KieBase;
import org.kie.api.KieServices;
import org.kie.api.runtime.StatelessKieSession;
import org.kie.internal.command.CommandFactory;

public class Test {

    public static void main(String[] args) {

        KieBase kieBase = KieServices.Factory.get().getKieClasspathContainer()
                .getKieBase();
        StatelessKieSession session = kieBase.newStatelessKieSession();
        session.execute(CommandFactory.newFireAllRules());
    }
}
{code}

This issue might be related with DROOLS-987.



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