hi,
i am using the following code to close the task instance while writing the
custom client for the BPM system.
the code iam using is :
jbpmContext = jbpmConfiguration.createJbpmContext();
Connection conn=jbpmContext.getConnection();
//conn.setAutoCommit(true);
Transaction transaction =
jbpmContext.getSession().beginTransaction();
GraphSession graphSession =
jbpmContext.getGraphSession();
ProcessDefinition processDefinition =
graphSession.loadProcessDefinition(processDefinitionId);
System.out.println("the process definition is
"+processDefinition);
//ProcessInstance processInstance =
processDefinition.createProcessInstance();
ProcessInstance processInstance =
jbpmContext.newProcessInstance(processDefinition.getName());
System.out.println("the process instance is
"+processInstance+"id is "+processInstance.getId());
//processInstance.signal();
//ProcessInstance processInstance
=jbpmContext.newProcessInstance(processDefinition.getName());//new
ProcessInstance(processDefinition);
//processInstance =
jbpmContext.loadProcessInstanceForUpdate(processInstance.getId());
TaskInstance taskInstance =
processInstance.getTaskMgmtInstance().createStartTaskInstance();
System.out.println("the task instance is
"+taskInstance);
System.out.println("the task instance is
"+taskInstance.getName());
//this.initialize(taskInstance,taskFormParams);
taskInstance.start();
System.out.println(taskInstance.getId());
//taskInstance.end();
System.out.println("this is the date and tiem of
creation fo the task instance"+taskInstance.getStart());
try{
taskInstance.end();
}
catch(Exception e)
{
System.out.println("this is the excetion comes
at the end of the task instance"+e.fillInStackTrace());
}
jbpmContext.save(taskInstance);
//jbpmContext.save(processInstance);
//jbpmContext.getSession().flush();
//jbpmContext.getSession().clear();
transaction.commit();
//processInstance.end();
//conn.setAutoCommit(false);
jbpmContext.close();
tehn iam getting the following exception :
it is eating all my time and resources.please help me to get out of thsi
situation.
StatefulPersi W org.hibernate.engine.StatefulPersistenceContext Narrowing
proxy to class org.jbpm.graph.node.TaskNode - this operation breaks ==
[6/2/06 12:11:16:047 IST] 711d6ced DbPersistence E
org.jbpm.persistence.db.DbPersistenceService problem rolling back after failed
commit
[6/2/06 12:11:16:047 IST] 711d6ced DbPersistence E
org.jbpm.persistence.db.DbPersistenceService TRAS0014I: The following
exception was logged org.hibernate.TransactionException: Transaction not
successfully started
at
org.hibernate.transaction.JTATransaction.rollback(JTATransaction.java:171)
at
org.jbpm.persistence.db.DbPersistenceService.close(DbPersistenceService.java:165)
at org.jbpm.svc.Services.close(Services.java:211)
at org.jbpm.JbpmContext.close(JbpmContext.java:138)
at
com.yash.jbpm.client.Configuration.startProcessInstance(Configuration.java:195)
at com.yash.jbpm.client.ProcessStarter.doPost(ProcessStarter.java:47)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
com.ibm.ws.webcontainer.servlet.StrictServletInstance.doService(StrictServletInstance.java:110)
at
com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet._service(StrictLifecycleServlet.java:174)
at
com.ibm.ws.webcontainer.servlet.IdleServletState.service(StrictLifecycleServlet.java:313)
at
com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet.service(StrictLifecycleServlet.java:116)
at
com.ibm.ws.webcontainer.servlet.ServletInstance.service(ServletInstance.java:283)
at
com.ibm.ws.webcontainer.servlet.ValidServletReferenceState.dispatch(ValidServletReferenceState.java:42)
at
com.ibm.ws.webcontainer.servlet.ServletInstanceReference.dispatch(ServletInstanceReference.java:40)
at
com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.handleWebAppDispatch(WebAppRequestDispatcher.java:983)
at
com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.dispatch(WebAppRequestDispatcher.java:564)
at
com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:200)
at
com.ibm.ws.webcontainer.srt.WebAppInvoker.doForward(WebAppInvoker.java:119)
at
com.ibm.ws.webcontainer.srt.WebAppInvoker.handleInvocationHook(WebAppInvoker.java:276)
at
com.ibm.ws.webcontainer.cache.invocation.CachedInvocation.handleInvocation(CachedInvocation.java:71)
at
com.ibm.ws.webcontainer.cache.invocation.CacheableInvocationContext.invoke(CacheableInvocationContext.java:116)
at
com.ibm.ws.webcontainer.srp.ServletRequestProcessor.dispatchByURI(ServletRequestProcessor.java:186)
at
com.ibm.ws.webcontainer.oselistener.OSEListenerDispatcher.service(OSEListener.java:334)
at
com.ibm.ws.webcontainer.http.HttpConnection.handleRequest(HttpConnection.java:56)
at
com.ibm.ws.http.HttpConnection.readAndHandleRequest(HttpConnection.java:618)
at com.ibm.ws.http.HttpConnection.run(HttpConnection.java:439)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:672
"ANY HELP REGARDING THIS WILL BE APPRICIATED"
Regards,
mohan chokkakula.
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