[jboss-jira] [JBoss JIRA] (DROOLS-1178) NPE removing a not initialized rule in stream mode

[Anton Giertli (JIRA)]

Anton Giertli created DROOLS-1178:
-------------------------------------

             Summary: NPE removing a not initialized rule in stream mode
                 Key: DROOLS-1178
                 URL: https://issues.jboss.org/browse/DROOLS-1178
             Project: Drools
          Issue Type: Bug
            Reporter: Anton Giertli
            Assignee: Mario Fusco


In Stream mode a path memory can have a RuleAgendaItem even if the path has been never totally linked and then it misses the first segment memory. When an incremental compilation tries to remove the rule for that path the following exception is thrown:

{code}
java.lang.NullPointerException
	at org.drools.core.phreak.RuleNetworkEvaluator.evaluateNetwork(RuleNetworkEvaluator.java:70)
	at org.drools.core.phreak.AddRemoveRule.flushStagedTuples(AddRemoveRule.java:547)
	at org.drools.core.phreak.AddRemoveRule.removeRule(AddRemoveRule.java:178)
	at org.drools.core.reteoo.ReteooBuilder.removeTerminalNode(ReteooBuilder.java:185)
	at org.drools.core.reteoo.ReteooBuilder.removeRules(ReteooBuilder.java:170)
	at org.drools.core.impl.KnowledgeBaseImpl.internalRemoveRule(KnowledgeBaseImpl.java:1685)
	at org.drools.core.impl.KnowledgeBaseImpl.access$200(KnowledgeBaseImpl.java:117)
	at org.drools.core.impl.KnowledgeBaseImpl$3.run(KnowledgeBaseImpl.java:1658)
	at org.drools.core.impl.KnowledgeBaseImpl.enqueueModification(KnowledgeBaseImpl.java:720)
	at org.drools.core.impl.KnowledgeBaseImpl.removeRule(KnowledgeBaseImpl.java:1655)
	at org.drools.compiler.builder.impl.KnowledgeBuilderImpl.preProcessRules(KnowledgeBuilderImpl.java:1155)
	at org.drools.compiler.builder.impl.KnowledgeBuilderImpl.compileRules(KnowledgeBuilderImpl.java:1106)
	at org.drools.compiler.builder.impl.KnowledgeBuilderImpl.compileAllRules(KnowledgeBuilderImpl.java:989)
	at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl.buildRules(CompositeKnowledgeBuilderImpl.java:260)
	at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl.buildPackages(CompositeKnowledgeBuilderImpl.java:121)
	at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl.build(CompositeKnowledgeBuilderImpl.java:105)
	at org.drools.compiler.kie.builder.impl.KieContainerImpl.rebuildAll(KieContainerImpl.java:386)
	at org.drools.compiler.kie.builder.impl.KieContainerImpl.updateKBase(KieContainerImpl.java:241)
	at org.drools.compiler.kie.builder.impl.KieContainerImpl.access$000(KieContainerImpl.java:80)
	at org.drools.compiler.kie.builder.impl.KieContainerImpl$1.run(KieContainerImpl.java:186)
	at org.drools.core.impl.KnowledgeBaseImpl.enqueueModification(KnowledgeBaseImpl.java:720)
	at org.drools.compiler.kie.builder.impl.KieContainerImpl.update(KieContainerImpl.java:183)
	at org.drools.compiler.kie.builder.impl.KieContainerImpl.updateToVersion(KieContainerImpl.java:130)
	at org.drools.compiler.integrationtests.incrementalcompilation.IncrementalCompilationTest.testRemoveRuleWithNonInitializedPath(IncrementalCompilationTest.java:2832)
{code}



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