[jboss-jira] [JBoss JIRA] (DROOLS-700) ClassCastException using collect accumulator

ClassCastException using collect accumulator -------------------------------------------- Key: DROOLS-700 URL: https://issues.jboss.org/browse/DROOLS-700 Project: Drools Issue Type: Bug Reporter: Mario Fusco Assignee: Mario Fusco Fix For: 6.2.0.Final When a collect accumulator is in a subnetwork the left tuple is unwrapped twice causing a ClassCastException like the following: java.lang.RuntimeException: java.lang.ClassCastException: ExpectedMessage cannot be cast to org.drools.core.reteoo.LeftTuple at org.drools.core.rule.SingleAccumulate.accumulate(SingleAccumulate.java:90) at org.drools.core.phreak.PhreakAccumulateNode.reaccumulateForLeftTuple(PhreakAccumulateNode.java:833) at org.drools.core.phreak.PhreakAccumulateNode.doLeftUpdatesProcessChildren(PhreakAccumulateNode.java:401) at org.drools.core.phreak.PhreakAccumulateNode.doLeftUpdates(PhreakAccumulateNode.java:301) at org.drools.core.phreak.PhreakAccumulateNode.doNode(PhreakAccumulateNode.java:72) at org.drools.core.phreak.RuleNetworkEvaluator.switchOnDoBetaNode(RuleNetworkEvaluator.java:562) 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.evalStackEntry(RuleNetworkEvaluator.java:224) at org.drools.core.phreak.RuleNetworkEvaluator.outerEval(RuleNetworkEvaluator.java:166) at org.drools.core.phreak.RuleNetworkEvaluator.evaluateNetwork(RuleNetworkEvaluator.java:116) at org.drools.core.phreak.RuleExecutor.reEvaluateNetwork(RuleExecutor.java:231) at org.drools.core.phreak.RuleExecutor.evaluateNetworkAndFire(RuleExecutor.java:106) at org.drools.core.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:1008) at org.drools.core.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1294) at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1289) at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1262) 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.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:321) Caused by: java.lang.ClassCastException: ExpectedMessage cannot be cast to org.drools.core.reteoo.LeftTuple at org.drools.core.base.accumulators.CollectAccumulator.accumulate(CollectAccumulator.java:95) at org.drools.core.rule.SingleAccumulate.accumulate(SingleAccumulate.java:82) ... 50 more