Hi guys
I'm using JBPM 3.3.0.GA, I have a use case that want to create a new
ProcessInstance (name as A) inside an actionHandler of an outer one, the code
in the action handler would like this:
| @Override
| public void execute(ExecutionContext executionContext) throws Exception
{
| // get operation context from workflow
| OperationContext context = (OperationContext) executionContext
| .getContextInstance().getTransientVariable(
| Operation.OPERATION_CONTEXT);
| // create discovery operation
| WorkflowOperation discoveryOperation = new
WorkflowOperation(context);
| // create discovery related workflow
| ProcessDefinition processDefinition =
ProcessDefinition.parseXmlString(definition);
| ProcessInstance processInstance =
| new ProcessInstance(processDefinition);
| discoveryOperation.setProcessInstance(processInstance);
|
| new JBossCacheServiceFactory().getCacheService(
|
CacheRegionConstants.TASK).put(context.getOperationId(),
| discoveryOperation);
| if (logger.isDebugEnabled()) {
| logger.debug("Discovery Operation with Workflow created
successfully.");
| }
| }
|
For this inner processInstance I didn't do anything like call the save method
to make it persisted, and this is also what i expected, because i want to put
it in the cache, and the following code show how i created the outer
processInstance:
| public static final void createProcess(OperationContext context) {
| JbpmContext jbpmContext =
JbpmConfingurationFactory.jbpmConfiguration
| .createJbpmContext();
| try {
| ProcessDefinition retrievedPd =
jbpmContext.getGraphSession()
|
.findLatestProcessDefinition(context.getWorkflowName());
| if (retrievedPd == null) {
| logger.error("Can not find Process Definition
with name: " + context.getWorkflowName());
| throw new DMException("Can not find Process
Definition with name: " + context.getWorkflowName());
| }
| ProcessInstance processInstance = new
ProcessInstance(retrievedPd);
| processInstance.setKey(context.getTaskId());
|
processInstance.getContextInstance().setTransientVariable(Operation.OPERATION_CONTEXT,
context);
| // ready to signal work flow
| processInstance.signal();
| jbpmContext.save(processInstance);
| if (logger.isDebugEnabled()) {
| logger.debug("---------------- create
processinstance -----------------");
| logger.debug("---------------- complete [" +
context.getTaskId() + "] -----------------");
| }
| } finally {
| jbpmContext.close();
| }
| }
|
You see i call the save method and try to make the outer processInstance
persisted, so I expect the outer processInstance should be persisted
successfully but the inner one shouldn't, because i explicitily call the save
method for the outer one not for the inner one, this make sense to me and i
think it's a correct logic, but when i close the jbpmContext, i got the
following error:
| 10:36:36,392 ERROR [DbPersistenceService] hibernate commit failed
| org.hibernate.TransientObjectException: object references an unsaved
transient instance - save the t
| ransient instance before flushing: org.jbpm.graph.def.Node
| at
org.hibernate.engine.ForeignKeys.getEntityIdentifierIfNotUnsaved(ForeignKeys.java:219)
| at org.hibernate.type.EntityType.getIdentifier(EntityType.java:397)
| at org.hibernate.type.ManyToOneType.isDirty(ManyToOneType.java:242)
| at org.hibernate.type.TypeFactory.findDirty(TypeFactory.java:597)
| at
org.hibernate.persister.entity.AbstractEntityPersister.findDirty(AbstractEntityPersister.
| java:3128)
| at
org.hibernate.event.def.DefaultFlushEntityEventListener.dirtyCheck(DefaultFlushEntityEven
| tListener.java:479)
| at
org.hibernate.event.def.DefaultFlushEntityEventListener.isUpdateNecessary(DefaultFlushEnt
| ityEventListener.java:204)
| at
org.hibernate.event.def.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityE
| ventListener.java:127)
| at
org.hibernate.event.def.AbstractFlushingEventListener.flushEntities(AbstractFlushingEvent
| Listener.java:196)
| at
org.hibernate.event.def.AbstractFlushingEventListener.flushEverythingToExecutions(Abstrac
| tFlushingEventListener.java:76)
| at
org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:
| 26)
| at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000)
| at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:338)
| at
org.hibernate.transaction.JTATransaction.commit(JTATransaction.java:135)
| at
org.jbpm.persistence.db.DbPersistenceService.commit(DbPersistenceService.java:262)
| at
org.jbpm.persistence.db.DbPersistenceService.close(DbPersistenceService.java:218)
| at org.jbpm.svc.Services.close(Services.java:236)
| at org.jbpm.JbpmContext.close(JbpmContext.java:136)
|
|
So, please tell me, did i miss something? Thank you very very much.
P.S. I post a similar topic yesterday, but it's not as clear as this one, so i
post this new one.
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