[jboss-jira] [JBoss JIRA] (DROOLS-1290) NPE caused by forced flushing of unlinked path in stream mode
Mario Fusco created DROOLS-1290:
-----------------------------------
Summary: NPE caused by forced flushing of unlinked path in stream mode
Key: DROOLS-1290
URL: https://issues.jboss.org/browse/DROOLS-1290
Project: Drools
Issue Type: Bug
Components: core engine
Reporter: Mario Fusco
Assignee: Mario Fusco
Fix For: 7.0.0.Beta2
In stream mode it is necessary to enforce flushing of path memories. However doing this on
an unlinked path is a waste of time and moreover can causes a NPE in presence of a
subnetwork like the following:
{code}
java.lang.NullPointerException
at
org.drools.core.phreak.RuleNetworkEvaluator.deleteChildLeftTuple(RuleNetworkEvaluator.java:725)
at
org.drools.core.phreak.RuleNetworkEvaluator.unlinkAndDeleteChildLeftTuple(RuleNetworkEvaluator.java:718)
at org.drools.core.phreak.PhreakJoinNode.doLeftDeletes(PhreakJoinNode.java:418)
at org.drools.core.phreak.PhreakJoinNode.doNode(PhreakJoinNode.java:47)
at
org.drools.core.phreak.RuleNetworkEvaluator.switchOnDoBetaNode(RuleNetworkEvaluator.java:519)
at
org.drools.core.phreak.RuleNetworkEvaluator.evalBetaNode(RuleNetworkEvaluator.java:505)
at org.drools.core.phreak.RuleNetworkEvaluator.evalNode(RuleNetworkEvaluator.java:341)
at org.drools.core.phreak.RuleNetworkEvaluator.innerEval(RuleNetworkEvaluator.java:301)
at org.drools.core.phreak.RuleNetworkEvaluator.doRiaNode(RuleNetworkEvaluator.java:573)
at
org.drools.core.phreak.RuleNetworkEvaluator.evalBetaNode(RuleNetworkEvaluator.java:500)
at org.drools.core.phreak.RuleNetworkEvaluator.evalNode(RuleNetworkEvaluator.java:341)
at org.drools.core.phreak.RuleNetworkEvaluator.innerEval(RuleNetworkEvaluator.java:301)
at org.drools.core.phreak.RuleNetworkEvaluator.outerEval(RuleNetworkEvaluator.java:136)
at
org.drools.core.phreak.RuleNetworkEvaluator.evaluateNetwork(RuleNetworkEvaluator.java:94)
at org.drools.core.phreak.RuleExecutor.reEvaluateNetwork(RuleExecutor.java:194)
at org.drools.core.phreak.RuleExecutor.evaluateNetworkAndFire(RuleExecutor.java:73)
at org.drools.core.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:969)
at org.drools.core.common.DefaultAgenda.fireLoop(DefaultAgenda.java:1311)
at org.drools.core.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1250)
at
org.drools.core.impl.StatefulKnowledgeSessionImpl.internalFireAllRules(StatefulKnowledgeSessionImpl.java:1356)
at
org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1347)
at
org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1328)
{code}
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