[JBoss-user] [JBoss jBPM] - Re: TaskAssignment works but findTaskInstances fails

[mohan514]

thanX for ur early reply,
if my configuration file is wrong then iam not able to get the task list and 
process definitions for the user after iam gettign the process definitions 
using the definition ID iam trying to instantiate the process definition then i 
am coming accross the problem of persistence. before restarting the server(JVM) 
iam able to see the task list of the user.
after restarting the server ima not able to see the task list.
if u want more details while helping me ill provide this makes one week for me, 
i tried to directly set the auto commit to true.then it is persisteing into the 
data bas. but the approach that iam using seems to me the not correct approach 
to instantiate the process.
please help me how to instantiate the process.
"any help regarding this will be appriciated"
Regards,
Mohan chokkakula.

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[JBoss-user] [JBoss jBPM] - Re: TaskAssignment works but findTaskInstances fails

[kukeltje]

what do you mean with 'the same problem'? The subject or the stacktrace? If it 
is the former, try looking at your hibernate config. If it is the latter, you 
have to provide more info, since the code looks ok. Do you actually use a 
hibernate config? 

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[JBoss-user] [JBoss jBPM] - Re: TaskAssignment works but findTaskInstances fails

[mohan514]

hi, 
iam also getting the same problem while iam trying to create the new instance 
of the process then iam getitng this problem and when i tried to instantiate it 
is showing the task list for the user but when ever i restart the server then 
iam not able to find the task list for the user.
i think the data i have given is not persistign into the data base.

Below is the code that i used to instantiate the code.

 jbpmContext = jbpmConfiguration.createJbpmContext();
GraphSession graphSession = jbpmContext.getGraphSession();
ProcessDefinition processDefinition = 
graphSession.loadProcessDefinition(processDefinitionId);
ProcessInstance processInstance = 
jbpmContext.newProcessInstance(processDefinition.getName());
processInstance.signal();
jbpmContext.save(processInstance);
jbpmContext.close();



and iam getting the problem while persistign the task instance into the data 
base any one come accross thsi type of problem if so please guide me to resolve 
the problem.
Regards,
mohan chokkakula.


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[JBoss-user] [JBoss jBPM] - Re: TaskAssignment works but findTaskInstances fails

[kukeltje]

No problem, we're here to help eachother right ;-)

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[JBoss-user] [JBoss jBPM] - Re: TaskAssignment works but findTaskInstances fails

[Saviola]

Hi, kukeltje!
This exactly was the document that I was talking about.
The jBPM forum was the last place where I would have searched for since the 
answer is quite technical oriented and concerning hibernate.
Anyway, thank you for the reminder and the advice!

Saviola

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[JBoss-user] [JBoss jBPM] - Re: TaskAssignment works but findTaskInstances fails

[kukeltje]

Saviola,

Thanks, someone who knows how to use searchfunctionality. But. The jbpm 
forum search functionality would have provided this link:

http://www.jboss.com/index.html?module=bb&op=viewtopic&t=73123

Ronald

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[JBoss-user] [JBoss jBPM] - Re: TaskAssignment works but findTaskInstances fails

[Saviola]

Hi aamonten!
Here you can read more about the warnign:
http://opensource.atlassian.com/projects/hibernate/browse/HHH-1367
http://forums.hibernate.org/viewtopic.php?t=941507&view=next&sid=bcc76fb6a152498bed5a05c6f0cb1d4f
I had read a documentation (I think it was Hibernate's) with a very simple 
explanation of the issue but I can't find it at the moment. It was something 
that Hibernate extends the objects while quering the database. and this breaks 
the == operation.
Unfortunatelly I am not able to explain that in detail :(

Regards,
 Saviola

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[JBoss-user] [JBoss jBPM] - Re: TaskAssignment works but findTaskInstances fails

[aamonten]

"sps100" wrote : Using 3.1, DB2 8.x
  | 
  | I created an assignment handler and assigned a task to the user "guest" 
using Assignable.setActorId("guest") method. This creates a task instance in 
JBPM_TASKINSTANCE with ACTORID_ as guest. This thorws following warning:
  | 
  | 13:15:06,068 [main] WARN  StatefulPersistenceContext : Narrowing proxy to 
class org.jbpm.graph.node.StartState - this operation breaks ==
  | 13:15:06,088 [main] WARN  StatefulPersistenceContext : Narrowing proxy to 
class org.jbpm.graph.node.TaskNode - this operation breaks ==
  | 
  | 
"kukeltje" wrote : - The warnings can be ignored
Even if the warning could be ignored it would be nice to know what it's, any 
have an idea?

Regards Alejandro

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[JBoss-user] [JBoss jBPM] - Re: TaskAssignment works but findTaskInstances fails

[kukeltje]

thanks for letting us know and glad we could help you

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[JBoss-user] [JBoss jBPM] - Re: TaskAssignment works but findTaskInstances fails

[sps100]

You are correct. There was a query substitution in our hibernate mapping file.  
This is not a jBPM problem. 

Thank you

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[JBoss-user] [JBoss jBPM] - Re: TaskAssignment works but findTaskInstances fails

[kukeltje]

- The warnings can be ignored
- taskinstan0_.ISOPEN_='Y'  is the culprit I think. The ISOPEN column in the 
JBPM_TASKINSTANCE table is a numerical field.  I cannot imagine that this is a 
generic bug in jBPM since everybody would have this problem. Could be an issue 
with the hibernate config for db2.

hth,

Ronald

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[JBoss-user] [JBoss jBPM] - Re: TaskAssignment works but findTaskInstances fails

[sps100]

Found a workaround

We have process instance (process instance id) so we can also use API:

Collection taskCollection = 
processInstance.getTaskMgmtInstance().getTaskInstances();
Then look for the given Actor Id.
We don't have many Task Nodes so this should not cause any performance problem.

Looks like there may be a problem in 
getTaskMgmtSession().findTaskInstances("user id") on JbpmContext.

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