[rules-users] Exception when using retract

Hi i have a problem that seems to me quite similar to this http://drools.46999.n3.nabble.com/rules-users-Exception-when-using-retrac... (i cannot reply to this post, don't Know why) In my case exception is java.lang.NullPointerException at ConditionEvaluator9935e5dba4084774a05641a0448cd694.evaluate(Unknown Source) at org.drools.rule.constraint.MvelConstraint.evaluate(MvelConstraint.java:200) at org.drools.rule.constraint.MvelConstraint.isAllowedCachedLeft(MvelConstraint.java:169) at org.drools.common.DoubleBetaConstraints.isAllowedCachedLeft(DoubleBetaConstraints.java:88) at org.drools.reteoo.NotNode.assertLeftTuple(NotNode.java:78) at org.drools.reteoo.CompositeLeftTupleSinkAdapter.doPropagateAssertLeftTuple(CompositeLeftTupleSinkAdapter.java:232) at org.drools.reteoo.CompositeLeftTupleSinkAdapter.propagateAssertLeftTuple(CompositeLeftTupleSinkAdapter.java:89) at org.drools.reteoo.JoinNode.propagateFromLeft(JoinNode.java:107) at org.drools.reteoo.JoinNode.assertLeftTuple(JoinNode.java:95) at org.drools.reteoo.CompositeLeftTupleSinkAdapter.doPropagateAssertLeftTuple(CompositeLeftTupleSinkAdapter.java:232) at org.drools.reteoo.CompositeLeftTupleSinkAdapter.createAndPropagateAssertLeftTuple(CompositeLeftTupleSinkAdapter.java:116) at org.drools.reteoo.LeftInputAdapterNode.assertObject(LeftInputAdapterNode.java:154) at org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateAssertObject(CompositeObjectSinkAdapter.java:497) at org.drools.reteoo.CompositeObjectSinkAdapter.propagateAssertObject(CompositeObjectSinkAdapter.java:382) at org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:235) at org.drools.reteoo.EntryPointNode.assertObject(EntryPointNode.java:240) at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:350) at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:311) at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:903) at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:847) at org.drools.impl.StatefulKnowledgeSessionImpl.insert(StatefulKnowledgeSessionImpl.java:269) at it.eximia.meerkat.re.core.RuleEngine.executeSession(RuleEngine.java:212) at it.eximia.meerkat.re.core.RuleEngine.run(RuleEngine.java:180) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:439) at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:317) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:98) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:204) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918) at java.lang.Thread.run(Thread.java:662) |#] [#|2014-06-07T04:05:11.418+0200|WARNING|sun-appserver2.1|RuleEngine|_ThreadID=25;_ThreadName=pool-5-thread-1;_RequestID=b189af67-c681-411d-ad8c-44f1ec1646bf;|errore nel Rule Engine Exception executing consequence for rule "temperatura normale" in it.sure.template: java.lang.NullPointerException at org.drools.runtime.rule.impl.DefaultConsequenceExceptionHandler.handleException(DefaultConsequenceExceptionHandler.java:39) at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1297) at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:1221) at org.drools.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1456) at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:710) at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:674) at org.drools.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:230) at it.eximia.meerkat.re.core.RuleEngine.executeSession(RuleEngine.java:215) at it.eximia.meerkat.re.core.RuleEngine.run(RuleEngine.java:180) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:439) at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:317) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:98) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:204) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918) at java.lang.Thread.run(Thread.java:662) Caused by: java.lang.NullPointerException at org.drools.core.util.index.LeftTupleIndexHashTable.remove(LeftTupleIndexHashTable.java:370) at org.drools.reteoo.NotNode.retractLeftTuple(NotNode.java:214) at org.drools.reteoo.CompositeLeftTupleSinkAdapter.doPropagateRetractLeftTuple(CompositeLeftTupleSinkAdapter.java:250) at org.drools.reteoo.CompositeLeftTupleSinkAdapter.propagateRetractRightTuple(CompositeLeftTupleSinkAdapter.java:165) at org.drools.reteoo.JoinNode.retractRightTuple(JoinNode.java:184) at org.drools.reteoo.ObjectTypeNode.retractObject(ObjectTypeNode.java:283) at org.drools.reteoo.EntryPointNode.retractObject(EntryPointNode.java:354) at org.drools.common.NamedEntryPoint.retract(NamedEntryPoint.java:568) at org.drools.base.DefaultKnowledgeHelper.retract(DefaultKnowledgeHelper.java:357) at it.sure.template.Rule_temperatura_normale_53fab538df67455491288390ebd5c29c.defaultConsequence(Rule_temperatura_normale_53fab538df67455491288390ebd5c29c.java:49) at it.sure.template.Rule_temperatura_normale_53fab538df67455491288390ebd5c29cDefaultConsequenceInvokerGenerated.evaluate(Unknown Source) at it.sure.template.Rule_temperatura_normale_53fab538df67455491288390ebd5c29cDefaultConsequenceInvoker.evaluate(Unknown Source) at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1287) ... 16 more |#] i'm using drools 5.5.0 Final here is the rule, (i removed some statements don't seems relevant) rule "temperatura normale" salience -2 when $nowTimestamp : ExecutionTimestamp() $event: ScalarEvent(name == "TEMPERATURE_EVENT", $creation: creationDateTime, $uuid : sensorUUID ) from entry-point "event" not(ScalarEvent(name == "TEMPERATURE_EVENT", creationDateTime.time < $creation.getTime(), sensorUUID == $uuid) from entry-point "event") $sensor: EnvironmentalSensor(sensorUUID == $event.sensorUUID, $sensor.type.keyId == "TEMP_ENV_TYPE", $sensor.assessable == true) $temperature1: Number( floatValue >= Float.valueOf($sensor.getPropertyValue("min")) ) from $event.measure $temperature2: Number( floatValue <= Float.valueOf($sensor.getPropertyValue("max")) ) from $event.measure $sensorInAlarm: SensorInAlarm (sensorUUID == $uuid) then ConcurrentHashMap<String, String> statusInfo = sensorCache.get($sensor.getId().toString()); SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); long sensorId = $sensor.getId(); Date alarmTimestamp = $event.getCreationDateTime(); String measure = $event.getMeasure() + ""; String alarmType = "TEMPERATURE_OK"; statusInfo.put("eventMeasure", measure); statusInfo.put("eventTimestamp", formatter.format(alarmTimestamp)); $sensorInAlarm.setEventTimestamp(alarmTimestamp); $sensorInAlarm.setEventMeasure(measure); update($sensorInAlarm); sensorCache.update($sensor.getId().toString(), statusInfo); RuleEngineLogger.log(RuleEngineLoggerLevel.INFO, "normale"); retract($event); end The exception does not immediately occur sometimes it takes days before occurs Rule is fire when event TEMPERATURE_EVENT occurs. TEMPERATURE_EVENT is a measure from a thermometer, i have a dispather that simultaneously sends 10 measures (coming from 10 different sensors), then dispatcher stops sending data for few minutes then it sends again new 10 measures, an so on. Same situation for me: When the exception is thrown, it looks like that the event is not removed from the knowledge base (I watch the number of events in the knowledge base -- fact count) I more than 10 rules, fired every 1s Any help would be appreciated Sara -- Eximia Srl <http://www.eximia.it> Sara Didaci Application Engineer Eximia S.r.l. Via Sassari, 3 09123 Cagliari - Italy Tel +39 070 7966776 Fax +39 070 680904 Mob +39 328 4660322 Email sara.didaci(a)eximia.it <mailto:sara.didaci@eximia.it> Web www.eximia.it <http://www.eximia.it> Eximia è un'azienda certificata ISO 9001 Image Il contenuto di questa e-mail e dei file allegati è RISERVATO e da considerarsi utilizzabile solamente dalla persona o ente al quale è indirizzato. 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