If we use cutom workitem handler as mentioned below and fireUntilhalt to invoke rules in reactive mode. While debugging, I found that before completing first task(line in blue & bold), it fires the rule which is active. After running of rule, it get back to end of completeworkitem.It creates a problem an thrpw an exception mentioned below.
WorkItemHandler
public class MyHumanChangingValuesSimulatorWorkItemHandler implements WorkItemHandler {
private static int counter = 1;
private WorkItemManager workItemManager;
private long workItemId;
private Map<String, Object> results;
private Emergency currentEmergency;
public void executeWorkItem(WorkItem workItem, WorkItemManager workItemManager) {
this.workItemId = workItem.getId();
this.workItemManager = workItemManager;
currentEmergency = (Emergency) workItem.getParameter("emergency");
currentEmergency.setRevision(currentEmergency.getRevision() + counter);
}
public void abortWorkItem(WorkItem workItem, WorkItemManager workItemManager) {
}
public void completeWorkItem() {
results = new HashMap<String, Object>();
results.put("emergency", currentEmergency);
workItemManager.completeWorkItem(workItemId, results);
}
}
Exception:
0 13/09 15:13:39,598[Thread-6] ERROR hibernate.util.JDBCExceptionReporter.logExceptions - error requeueing a JdbcPooledConnection from datasource jdbc/testDS in state ACCESSIBLE wrapping xads1: url=jdbc:h2:mem:mydb user=root
Hibernate: update ProcessInstanceInfo set lastModificationDate=?, lastReadDate=?, processId=?, processInstanceByteArray=?, startDate=?, state=?, OPTLOCK=? where InstanceId=? and OPTLOCK=?
3 13/09 15:13:39,601[Thread-6] ERROR hibernate.ejb.AbstractEntityManagerImpl.throwPersistenceException - Unable to mark for rollback on PersistenceException:
java.lang.IllegalStateException: no transaction started on this thread
at bitronix.tm.BitronixTransactionManager.setRollbackOnly(BitronixTransactionManager.java:123)
at org.hibernate.ejb.AbstractEntityManagerImpl.markAsRollback(AbstractEntityManagerImpl.java:421)
at org.hibernate.ejb.AbstractEntityManagerImpl.throwPersistenceException(AbstractEntityManagerImpl.java:576)
at org.hibernate.ejb.AbstractEntityManagerImpl.throwPersistenceException(AbstractEntityManagerImpl.java:614)
at org.hibernate.ejb.AbstractEntityManagerImpl.find(AbstractEntityManagerImpl.java:202)
at org.jbpm.persistence.JpaProcessPersistenceContext.findProcessInstanceInfo(JpaProcessPersistenceContext.java:26)
at org.jbpm.persistence.processinstance.JPAProcessInstanceManager.getProcessInstance(JPAProcessInstanceManager.java:59)
at org.jbpm.process.instance.ProcessRuntimeImpl.getProcessInstance(ProcessRuntimeImpl.java:190)
at org.drools.common.AbstractWorkingMemory.getProcessInstance(AbstractWorkingMemory.java:1113)
at org.drools.impl.StatefulKnowledgeSessionImpl.getProcessInstance(StatefulKnowledgeSessionImpl.java:283)
at org.jbpm.persistence.processinstance.JPASignalManager.signalEvent(JPASignalManager.java:24)
at org.jbpm.process.instance.ProcessRuntimeImpl$3.afterRuleFlowGroupDeactivated(ProcessRuntimeImpl.java:335)
at org.drools.event.AgendaEventSupport.fireAfterRuleFlowGroupDeactivated(AgendaEventSupport.java:168)
at org.drools.common.RuleFlowGroupImpl.setActive(RuleFlowGroupImpl.java:148)
at org.drools.common.RuleFlowGroupImpl$DeactivateCallback.execute(RuleFlowGroupImpl.java:301)
at org.drools.common.AbstractWorkingMemory.executeQueuedActions(AbstractWorkingMemory.java:994)
at org.drools.common.DefaultAgenda.fireUntilHalt(DefaultAgenda.java:1037)
at org.drools.common.AbstractWorkingMemory.fireUntilHalt(AbstractWorkingMemory.java:777)
at org.drools.common.AbstractWorkingMemory.fireUntilHalt(AbstractWorkingMemory.java:753)
at org.drools.command.runtime.rule.FireUntilHaltCommand$1.run(FireUntilHaltCommand.java:50)
at java.lang.Thread.run(Unknown Source)
Exception in thread "Thread-6" org.drools.RuntimeDroolsException: Unexpected exception executing action org.drools.common.RuleFlowGroupImpl$DeactivateCallback@556949
at org.drools.common.AbstractWorkingMemory.executeQueuedActions(AbstractWorkingMemory.java:996)
at org.drools.common.DefaultAgenda.fireUntilHalt(DefaultAgenda.java:1037)
at org.drools.common.AbstractWorkingMemory.fireUntilHalt(AbstractWorkingMemory.java:777)
at org.drools.common.AbstractWorkingMemory.fireUntilHalt(AbstractWorkingMemory.java:753)
at org.drools.command.runtime.rule.FireUntilHaltCommand$1.run(FireUntilHaltCommand.java:50)
at java.lang.Thread.run(Unknown Source)
Caused by: javax.persistence.PersistenceException: org.hibernate.exception.GenericJDBCException: Cannot release connection
at org.hibernate.ejb.AbstractEntityManagerImpl.throwPersistenceException(AbstractEntityManagerImpl.java:614)
at org.hibernate.ejb.AbstractEntityManagerImpl.find(AbstractEntityManagerImpl.java:202)
at org.jbpm.persistence.JpaProcessPersistenceContext.findProcessInstanceInfo(JpaProcessPersistenceContext.java:26)
at org.jbpm.persistence.processinstance.JPAProcessInstanceManager.getProcessInstance(JPAProcessInstanceManager.java:59)
at org.jbpm.process.instance.ProcessRuntimeImpl.getProcessInstance(ProcessRuntimeImpl.java:190)
at org.drools.common.AbstractWorkingMemory.getProcessInstance(AbstractWorkingMemory.java:1113)
at org.drools.impl.StatefulKnowledgeSessionImpl.getProcessInstance(StatefulKnowledgeSessionImpl.java:283)
at org.jbpm.persistence.processinstance.JPASignalManager.signalEvent(JPASignalManager.java:24)
at org.jbpm.process.instance.ProcessRuntimeImpl$3.afterRuleFlowGroupDeactivated(ProcessRuntimeImpl.java:335)
at org.drools.event.AgendaEventSupport.fireAfterRuleFlowGroupDeactivated(AgendaEventSupport.java:168)
at org.drools.common.RuleFlowGroupImpl.setActive(RuleFlowGroupImpl.java:148)
at org.drools.common.RuleFlowGroupImpl$DeactivateCallback.execute(RuleFlowGroupImpl.java:301)
at org.drools.common.AbstractWorkingMemory.executeQueuedActions(AbstractWorkingMemory.java:994)
... 5 more
Hibernate: select processins0_.InstanceId as InstanceId1_0_, processins0_.lastModificationDate as lastModi2_1_0_, processins0_.lastReadDate as lastRead3_1_0_, processins0_.processId as processId1_0_, processins0_.processInstanceByteArray as processI5_1_0_, processins0_.startDate as startDate1_0_, processins0_.state as state1_0_, processins0_.OPTLOCK as OPTLOCK1_0_ from ProcessInstanceInfo processins0_ where processins0_.InstanceId=?
Caused by: org.hibernate.exception.GenericJDBCException: Cannot release connection
at org.hibernate.exception.SQLStateConverter.handledNonSpecificException(SQLStateConverter.java:126)
at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:114)
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:52)
at org.hibernate.jdbc.ConnectionManager.closeConnection(ConnectionManager.java:478)
at org.hibernate.jdbc.ConnectionManager.aggressiveRelease(ConnectionManager.java:429)
at org.hibernate.jdbc.ConnectionManager.afterStatement(ConnectionManager.java:304)
at org.hibernate.jdbc.AbstractBatcher.closePreparedStatement(AbstractBatcher.java:572)
at org.hibernate.jdbc.AbstractBatcher.closeStatement(AbstractBatcher.java:291)
at org.hibernate.jdbc.AbstractBatcher.closeQueryStatement(AbstractBatcher.java:307)
at org.hibernate.jdbc.AbstractBatcher.closeQueryStatement(AbstractBatcher.java:234)
at org.hibernate.loader.Loader.doQuery(Loader.java:749)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:259)
at org.hibernate.loader.Loader.loadEntity(Loader.java:1881)
at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:71)
at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:65)
at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:3072)
at org.hibernate.event.def.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:434)
at org.hibernate.event.def.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:415)
at org.hibernate.event.def.DefaultLoadEventListener.load(DefaultLoadEventListener.java:165)
at org.hibernate.event.def.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:223)
at org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:126)
at org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:905)
at org.hibernate.impl.SessionImpl.get(SessionImpl.java:842)
at org.hibernate.impl.SessionImpl.get(SessionImpl.java:835)
at org.hibernate.ejb.AbstractEntityManagerImpl.find(AbstractEntityManagerImpl.java:182)
... 16 more
Caused by: java.sql.SQLException: error requeueing a JdbcPooledConnection from datasource jdbc/testDS in state ACCESSIBLE wrapping xads1: url=jdbc:h2:mem:mydb user=root
at bitronix.tm.resource.jdbc.JdbcPooledConnection.release(JdbcPooledConnection.java:148)
at bitronix.tm.resource.jdbc.JdbcConnectionHandle.close(JdbcConnectionHandle.java:77)
at org.hibernate.connection.DatasourceConnectionProvider.closeConnection(DatasourceConnectionProvider.java:97)
at org.hibernate.jdbc.ConnectionManager.closeConnection(ConnectionManager.java:474)
... 37 more
Caused by: bitronix.tm.internal.BitronixSystemException: cannot close a resource when its XAResource is taking part in an unfinished global transaction
at bitronix.tm.resource.common.TransactionContextHelper.requeue(TransactionContextHelper.java:117)
at bitronix.tm.resource.jdbc.JdbcPooledConnection.release(JdbcPooledConnection.java:146)
... 40 more
Please suggest me can we use fireUntilHalt() with customhumantask handler. Why it always beahave differently?