The root cause is java.util.NoSuchElementException as you can see in
the stack.
*From:* [email protected]
[mailto:[email protected]] *On Behalf Of *Anstis,
Michael (M.)
*Sent:* Monday, March 30, 2009 6:07 PM
*To:* Rules Users List
*Subject:* RE: [rules-users] Facing severe issues while using Persistence
This looks like a JPA issue; have you configured your PersistenceUnit?
I haven't used EclipseLink but in other IDE's you can create a PU
graphically. There's always persistence.xml to fall back to as well.
Looks like EclipseLink can't find a PU definition.
------------------------------------------------------------------------
*From:* [email protected]
[mailto:[email protected]] *On Behalf Of *Umesh
Wankhede
*Sent:* 30 March 2009 13:10
*To:* Rules Users List
*Subject:* RE: [rules-users] Facing severe issues while using
Persistence
Hi Kris
Thanks for the clues. But I have bigger problems when I try to use
the persistence with Oracle and EclipseLink(because of project
requirements).
I have mentioned in the below mail about the problems faced while
migrating from H2 to Oracle. After fixing these (Oracle with
Hibernate) issues, now I am facing quite a few issues while using
EclipseLink (in place of Hibernate), like use of temporal types
for dates, etc. I tried fixing these issues one by one, but got
stuck with this exception[1] and no clue how to fix it. Any help
would be appreciated.
Local Exception Stack:
Exception [EclipseLink-30005] (Eclipse Persistence Services -
1.0.2 (Build 20081024)):
_org.eclipse.persistence.exceptions.PersistenceUnitLoadingException_
Exception Description: An exception was thrown while searching for
persistence archives with ClassLoader:
sun.misc.launcher$appclassloa...@133056f
Internal Exception: _javax.persistence.PersistenceException_:
Exception [EclipseLink-28018] (Eclipse Persistence Services -
1.0.2 (Build 20081024)):
_org.eclipse.persistence.exceptions.EntityManagerSetupException_
Exception Description: Predeployment of PersistenceUnit
[org.drools.task] failed.
Internal Exception: _java.util.NoSuchElementException_
at
org.eclipse.persistence.exceptions.PersistenceUnitLoadingException.exceptionSearchingForPersistenceResources(_PersistenceUnitLoadingException.java:121_)
at
org.eclipse.persistence.jpa.PersistenceProvider.createEntityManagerFactory(_PersistenceProvider.java:117_)
at
org.eclipse.persistence.jpa.PersistenceProvider.createEntityManagerFactory(_PersistenceProvider.java:64_)
at
javax.persistence.Persistence.createEntityManagerFactory(_Persistence.java:83_)
at
javax.persistence.Persistence.createEntityManagerFactory(_Persistence.java:60_)
at com.sample.RuleFlowTest.main(_RuleFlowTest.java:51_)
Caused by: _javax.persistence.PersistenceException_: Exception
[EclipseLink-28018] (Eclipse Persistence Services - 1.0.2 (Build
20081024)):
_org.eclipse.persistence.exceptions.EntityManagerSetupException_
Exception Description: Predeployment of PersistenceUnit
[org.drools.task] failed.
-Umesh
*From:* [email protected]
[mailto:[email protected]] *On Behalf Of *Kris
Verlaenen
*Sent:* Thursday, March 26, 2009 8:32 PM
*To:* Rules Users List
*Subject:* Re: [rules-users] Facing severe issues while using
Persistence
Umesh,
Based on the error in the H2 log, it seems like you are trying to
assign tasks to a user that is not in your users database. The
task component contains a list of possible users and methods to
add new users. When creating a new task, possible actors must be
in the user list, otherwise the foreign key constraint cannot be
satisfied. By default, there should always be an "Administrator"
user, as all tasks are by default assigned to this users. On top
of that, you also need to add all possible users that you use in
your processes.
It might be better to check for the existing users when trying to
create a task and give an appropriate error message if the user
cannot be found ... I would gladly apply a patch if you could find
the time. Tasks are created in WSHumanTaskHandler, so that would
be the location to do these modifications.
Kris
----- Original Message -----
*From:* Umesh Wankhede <mailto:[email protected]>
*To:* Rules Users List <mailto:[email protected]>
*Sent:* Tuesday, March 24, 2009 2:07 PM
*Subject:* [rules-users] Facing severe issues while using
Persistence
Hi
While using workflow persistence feature (with human task
component), I am having quite a few problems. When I use
default db (H2), I get ConstraintViolationException [1]. Since
I have to ultimately integrate with Oracle, I modify the
config files to point to Oracle. But with that I started
getting lot of other issues, like invalid column names (size,
date), invalid table name (Comment), SQLGrammarException,
etc[2] (This is serious problem, if you use Oracle!)
I am struggling for quite a few days to get this work, but no
success, any help would be greatly appreciated.
I am attaching the source code also[3].
[1]db-h2-errors.log
[2] db-oracle-errors.log
[3] RuleFlowTest.java, ruleflow.rf
Regds
Umesh
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