ERROR drools.persistence.SingleSessionCommandService.rollbackTransaction Could not commit session java.lang.IllegalArgumentException: IOException while loading process instance: null

[gang2007]

• Hi!
• I'm new to jBPM5.Today I've encountered a problem when studying the persistence feature of JBPM5 using Hello Proces example. Everything is OK berfore I click the button 'Complete' in Human Task View.The console shows like this:

Hibernate: select workitemin0_.workItemId as workItemId3_0_, workitemin0_.creationDate as creation2_3_0_, workitemin0_.name as name3_0_, workitemin0_.processInstanceId as processI4_3_0_, workitemin0_.state as state3_0_, workitemin0_.OPTLOCK as OPTLOCK3_0_, workitemin0_.workItemByteArray as workItem7_3_0_ from WorkItemInfo workitemin0_ where workitemin0_.workItemId=?

java.io.EOFException

at java.io.ObjectInputStream$BlockDataInputStream.readByte(ObjectInputStream.java:2720)

at java.io.ObjectInputStream$BlockDataInputStream.readUTFChar(ObjectInputStream.java:3112)

at java.io.ObjectInputStream$BlockDataInputStream.readUTFBody(ObjectInputStream.java:3009)

at java.io.ObjectInputStream$BlockDataInputStream.readUTF(ObjectInputStream.java:2818)

at java.io.ObjectInputStream.readUTF(ObjectInputStream.java:1051)

at org.drools.marshalling.impl.InputMarshaller.readWorkItem(InputMarshaller.java:1168)

at org.drools.persistence.info.WorkItemInfo.getWorkItem(WorkItemInfo.java:110)

at org.drools.persistence.jpa.processinstance.JPAWorkItemManager.internalGetWorkItem(JPAWorkItemManager.java:187)

at org.drools.persistence.jpa.processinstance.JPAWorkItemManager.completeWorkItem(JPAWorkItemManager.java:115)

at org.drools.command.runtime.process.CompleteWorkItemCommand.execute(CompleteWorkItemCommand.java:69)

at org.drools.command.runtime.process.CompleteWorkItemCommand.execute(CompleteWorkItemCommand.java:32)

at org.drools.command.impl.DefaultCommandService.execute(DefaultCommandService.java:36)

at org.drools.persistence.SingleSessionCommandService.execute(SingleSessionCommandService.java:373)

at org.drools.command.impl.CommandBasedStatefulKnowledgeSession$1.completeWorkItem(CommandBasedStatefulKnowledgeSession.java:150)

at org.jbpm.process.workitem.wsht.GenericHTWorkItemHandler$TaskCompletedHandler.handleCompletedTask(GenericHTWorkItemHandler.java:273)

at org.jbpm.process.workitem.wsht.GenericHTWorkItemHandler$TaskCompletedHandler$1.run(GenericHTWorkItemHandler.java:239)

at java.lang.Thread.run(Thread.java:619)

Exception in thread "Thread-5" java.lang.IllegalArgumentException: IOException while loading process instance: null

at org.drools.persistence.info.WorkItemInfo.getWorkItem(WorkItemInfo.java:114)

at org.drools.persistence.jpa.processinstance.JPAWorkItemManager.internalGetWorkItem(JPAWorkItemManager.java:187)

at org.drools.persistence.jpa.processinstance.JPAWorkItemManager.completeWorkItem(JPAWorkItemManager.java:115)

at org.drools.command.runtime.process.CompleteWorkItemCommand.execute(CompleteWorkItemCommand.java:69)

at org.drools.command.runtime.process.CompleteWorkItemCommand.execute(CompleteWorkItemCommand.java:32)

at org.drools.command.impl.DefaultCommandService.execute(DefaultCommandService.java:36)

at org.drools.persistence.SingleSessionCommandService.execute(SingleSessionCommandService.java:373)

at org.drools.command.impl.CommandBasedStatefulKnowledgeSession$1.completeWorkItem(CommandBasedStatefulKnowledgeSession.java:150)

at org.jbpm.process.workitem.wsht.GenericHTWorkItemHandler$TaskCompletedHandler.handleCompletedTask(GenericHTWorkItemHandler.java:273)

at org.jbpm.process.workitem.wsht.GenericHTWorkItemHandler$TaskCompletedHandler$1.run(GenericHTWorkItemHandler.java:239)

at java.lang.Thread.run(Thread.java:619)

0 06/04 17:37:50,777[Thread-5] ERROR drools.persistence.SingleSessionCommandService.rollbackTransaction - Could not commit session

java.lang.IllegalArgumentException: IOException while loading process instance: null

at org.drools.persistence.info.WorkItemInfo.getWorkItem(WorkItemInfo.java:114)

at org.drools.persistence.jpa.processinstance.JPAWorkItemManager.internalGetWorkItem(JPAWorkItemManager.java:187)

at org.drools.persistence.jpa.processinstance.JPAWorkItemManager.completeWorkItem(JPAWorkItemManager.java:115)

at org.drools.command.runtime.process.CompleteWorkItemCommand.execute(CompleteWorkItemCommand.java:69)

at org.drools.command.runtime.process.CompleteWorkItemCommand.execute(CompleteWorkItemCommand.java:32)

at org.drools.command.impl.DefaultCommandService.execute(DefaultCommandService.java:36)

at org.drools.persistence.SingleSessionCommandService.execute(SingleSessionCommandService.java:373)

at org.drools.command.impl.CommandBasedStatefulKnowledgeSession$1.completeWorkItem(CommandBasedStatefulKnowledgeSession.java:150)

at org.jbpm.process.workitem.wsht.GenericHTWorkItemHandler$TaskCompletedHandler.handleCompletedTask(GenericHTWorkItemHandler.java:273)

at org.jbpm.process.workitem.wsht.GenericHTWorkItemHandler$TaskCompletedHandler$1.run(GenericHTWorkItemHandler.java:239)

at java.lang.Thread.run(Thread.java:619)

     Could someone please suggest where I am wrong?

     Thanks in advance!

[swiderski.maciej]

looks like there are some inconsitent data in your data base. I would suggest to clean up db and rerun the case. To clean up db you could simply remove jbpm*.db files from your home directory (assuming you use default setup). Alternatively you could clean the installation and install it again (ant clean.demo ant install.demo)

HTH

[gang2007]

Maciej, Thanks a lot !  It works~