[JBoss jBPM] - org.hibernate.event.def.AbstractFlushingEventListener] Could
by mavrides
Hi, I am using JBPM 3.2.2 under JBOSS 4.0.5GA and Hibernate (default JBOSS 4.0.5GA database).
I have a very simple process definition, in which I have a fork and a join and I want all nodes to be asynchronous. I have noticed that when I declare the two nodes between the fork/join as asynchronous I get this exception on the stack trace:
| INFO [com.sample.action.DummyTwoActionHandler] Node Name: node1
| INFO [com.sample.action.DummyTwoActionHandler] Node Name: node3
| INFO [com.sample.action.DummyTwoActionHandler] Node Name: node2
| ERROR [org.hibernate.event.def.AbstractFlushingEventListener] Could not synchronize database state with session
| org.hibernate.StaleObjectStateException: Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect): [org.jbpm.graph.exe.Token#874]
| at org.hibernate.persister.entity.AbstractEntityPersister.check(AbstractEntityPersister.java:1699)
| at org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:2342)
| at org.hibernate.persister.entity.AbstractEntityPersister.updateOrInsert(AbstractEntityPersister.java:2242)
| at org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:2542)
| at org.hibernate.action.EntityUpdateAction.execute(EntityUpdateAction.java:92)
| at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:248)
| at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:232)
| at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:140)
| at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:298)
| at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
| at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000)
| at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:338)
| at org.hibernate.transaction.CacheSynchronization.beforeCompletion(CacheSynchronization.java:59)
| at org.jboss.tm.TransactionImpl.doBeforeCompletion(TransactionImpl.java:1491)
| at org.jboss.tm.TransactionImpl.beforePrepare(TransactionImpl.java:1110)
| at org.jboss.tm.TransactionImpl.commit(TransactionImpl.java:324)
| at org.jboss.tm.TxManager.commit(TxManager.java:240)
| at org.jboss.jms.asf.StdServerSession.onMessage(StdServerSession.java:351)
| at org.jboss.mq.SpyMessageConsumer.sessionConsumerProcessMessage(SpyMessageConsumer.java:905)
| at org.jboss.mq.SpyMessageConsumer.addMessage(SpyMessageConsumer.java:170)
| at org.jboss.mq.SpySession.run(SpySession.java:323)
| at org.jboss.jms.asf.StdServerSession.run(StdServerSession.java:194)
| at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:743)
| at java.lang.Thread.run(Thread.java:619)
| 2007-09-17 17:16:59,171 ERROR [org.jboss.jms.asf.StdServerSession] failed to commit/rollback
| org.jboss.tm.JBossRollbackException: Unable to commit, tx=TransactionImpl:XidImpl[FormatId=257, GlobalId=emma/36, BranchQual=, localId=36] status=STATUS_NO_TRANSACTION; - nested throwable: (org.hibernate.StaleObjectStateException: Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect): [org.jbpm.graph.exe.Token#874])
| at org.jboss.tm.TransactionImpl.commit(TransactionImpl.java:372)
| at org.jboss.tm.TxManager.commit(TxManager.java:240)
| at org.jboss.jms.asf.StdServerSession.onMessage(StdServerSession.java:351)
| at org.jboss.mq.SpyMessageConsumer.sessionConsumerProcessMessage(SpyMessageConsumer.java:905)
| at org.jboss.mq.SpyMessageConsumer.addMessage(SpyMessageConsumer.java:170)
| at org.jboss.mq.SpySession.run(SpySession.java:323)
| at org.jboss.jms.asf.StdServerSession.run(StdServerSession.java:194)
| at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:743)
| at java.lang.Thread.run(Thread.java:619)
| Caused by: org.hibernate.StaleObjectStateException: Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect): [org.jbpm.graph.exe.Token#874]
| at org.hibernate.persister.entity.AbstractEntityPersister.check(AbstractEntityPersister.java:1699)
| at org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:2342)
| at org.hibernate.persister.entity.AbstractEntityPersister.updateOrInsert(AbstractEntityPersister.java:2242)
| at org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:2542)
| at org.hibernate.action.EntityUpdateAction.execute(EntityUpdateAction.java:92)
| at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:248)
| at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:232)
| at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:140)
| at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:298)
| at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
| at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000)
| at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:338)
| at org.hibernate.transaction.CacheSynchronization.beforeCompletion(CacheSynchronization.java:59)
| at org.jboss.tm.TransactionImpl.doBeforeCompletion(TransactionImpl.java:1491)
| at org.jboss.tm.TransactionImpl.beforePrepare(TransactionImpl.java:1110)
| at org.jboss.tm.TransactionImpl.commit(TransactionImpl.java:324)
| ... 8 more
I am not sure whether this is a bug of JBPM 3.2.2 but it only happens when I declare any nodes that exist between a fork/join as asynchronous. Here is my process definition:
| <?xml version="1.0" encoding="UTF-8"?>
|
| <process-definition
| xmlns="urn:jbpm.org:jpdl-3.2" name="AsyncProcessFork">
| <start-state name="start">
| <transition name="" to="node1"></transition>
| </start-state>
| <node name="node1" async='true'>
| <action class="com.sample.action.DummyTwoActionHandler"></action>
| <transition name="" to="fork1"></transition>
| </node>
| <fork name="fork1">
| <transition name="" to="node2"></transition>
| <transition name="tr2" to="node3"></transition>
| </fork>
| <join name="join1">
| <transition name="" to="node4"></transition>
| </join>
| <node name="node2" async='true'>
| <action class="com.sample.action.DummyTwoActionHandler"></action>
| <transition name="" to="join1"></transition>
| </node>
| <node name="node3" async='true'>
| <action class="com.sample.action.DummyTwoActionHandler"></action>
| <transition name="" to="join1"></transition>
| </node>
| <end-state name="end1"></end-state>
| <node name="node4" async='true'>
| <action class="com.sample.action.DummyTwoActionHandler"></action>
| <transition name="" to="end1"></transition>
| </node>
| </process-definition>
And here is my DummyActionHandler which just goes to the next node:
| public class DummyTwoActionHandler implements ActionHandler {
|
| static Logger log;
|
| public void execute(ExecutionContext executionContext) throws Exception {
|
| log = Logger.getLogger(this.getClass());
|
| log.info("Node Name: " + executionContext.getNode().getName());
|
| executionContext.getNode().leave(executionContext);
| }
|
| }
|
I would be really grateful for any help on this matter.
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18 years, 9 months
[JBoss Seam] - Filtering the ConversationStack based on view-id for breadcr
by jacob.orshalick
The application I am currently developing follows the following Form scenario:
1. User selects a DataModel element for editing which takes them to view editDataModelSelection.xhtml.
2. User makes changes to the DataModelSelection.
3. User selects an associated Object for editing which takes the user to sub-view editAggregateObject.xhtml
4. User makes changes to associated object and submits those changes.
5. This takes the user back to editDataModelSelection.xhtml view where the changes to the associated object are shown updated to the DataModelSelection.
5. User submits the changes to the DataModelSelection which persists both DataModelSelection changes and associated object changes as well.
A conversation is nested when the user accesses view editAggregateObject.xhtml. This allows a user to back-button to the editDataModelSelection.xhtml prior to editing the aggregate object without causing state inconsistencies between what the user sees and what actually persists on submit.
The trouble is the display of breadcrumbs through the ConversationStack. When the user traverses the following path:
view editDataModelSelection.xhtml -> action(editAssociatedObject) conversation nested here
-> view editAggregateObject.xhtml -> action(submitChanges)
-> view editDataModelSelection.xhtml
In this scenario, the breadcrumbs by default are displayed as:
Edit Data Model Selection | Edit Data Model Selection
This makes sense due to the fact that the nested conversation has the same view-id as the outer conversation. This continues the more times the user edits an associated object. The implementation I am using filters ConversationEntries from the ConversationStack based on the view-id so that the breadcrumbs are simply displayed as:
Edit Data Model Selection
regardless of the nested ConversationEntries in this scenario. Is there a better way to do this?
I know this is a long explanation so if any clarification is needed, please let me know. Thanks for any help you may be able to provide.
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18 years, 9 months