[jboss-jira] [JBoss JIRA] (DROOLS-749) Events deserialization is broken

[Mario Fusco (JIRA)]

Mario Fusco created DROOLS-749:
----------------------------------

             Summary: Events deserialization is broken
                 Key: DROOLS-749
                 URL: https://issues.jboss.org/browse/DROOLS-749
             Project: Drools
          Issue Type: Bug
            Reporter: Mario Fusco
            Assignee: Mario Fusco
            Priority: Critical


When a KieSession is deserialized the events present in the old serialized session are reasserted into the new session. Then if one of this event causes a scheduler to be immediately triggered this is done in a callback out of the main evaluation loop. This implies that the left tuples resulting from the triggering of the scheduler aren't propagated to the sink of the TimerNode which created the scheduler itself. This missing propagation can, in some circumstances, cause a NullPointerException like the following:

{code}
java.lang.NullPointerException
	at org.drools.core.phreak.PhreakTimerNode.doLeftDeletes(PhreakTimerNode.java:197)
	at org.drools.core.phreak.PhreakTimerNode.doNode(PhreakTimerNode.java:63)
	at org.drools.core.phreak.RuleNetworkEvaluator.innerEval(RuleNetworkEvaluator.java:364)
	at org.drools.core.phreak.RuleNetworkEvaluator.outerEval(RuleNetworkEvaluator.java:163)
	at org.drools.core.phreak.RuleNetworkEvaluator.evaluateNetwork(RuleNetworkEvaluator.java:118)
	at org.drools.core.phreak.RuleExecutor.reEvaluateNetwork(RuleExecutor.java:254)
	at org.drools.core.phreak.RuleExecutor.evaluateNetworkAndFire(RuleExecutor.java:108)
	at org.drools.core.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:1022)
	at org.drools.core.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1352)
	at org.drools.core.impl.StatefulKnowledgeSessionImpl.internalFireAllRules(StatefulKnowledgeSessionImpl.java:1318)
	at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1301)
	at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1280)
{code}



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