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Task Instance Not Ending
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created by <a href="http://community.jboss.org/people/shivashankar.p">shiva shankar</a> in <i>jBPM Development</i> - <a href="http://community.jboss.org/message/569927#569927">View the full discussion</a>
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<div class="jive-rendered-content"><p>Hi,</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I have following process definition.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><?xml version="1.0" encoding="UTF-8"?></p><p><process-definition xmlns="urn:jbpm.org:jpdl-3.2" name="simple"><br/>   <start-state name="start"><br/>      <transition name="Start" to="Step1"></transition><br/>   </start-state><br/>   <end-state name="end"></end-state><br/>   <task-node name="Step1"><br/>      <task name="Step1"><br/>         <assignment class="com.sample.SimpleAssignmentHandler"></assignment><br/>      </task><br/>      <transition name="Step2" to="Step2"></transition><br/>   </task-node><br/>   <task-node name="Step2"><br/>      <task name="Step2"></task><br/>      <transition name="End" to="end"></transition><br/>   </task-node><br/></process-definition></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>i had deployed the process definition using below code.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>JbpmContext jbpmContext = JbpmConfiguration.getInstance().createJbpmContext();<br/>String businessKey="";<br/>FileInputStream fis=new FileInputStream("D:/java_pro/simple.zip");<br/>ZipInputStream zis=new ZipInputStream(new BufferedInputStream(fis));<br/>ProcessDefinition processDefinition=ProcessDefinition.parseParZipInputStream(zis);<br/>GraphSession gs=jbpmContext.getGraphSession();<br/>gs.deployProcessDefinition(processDefinition);<br/>for(int i=0;i<=5;i++){<br/>                ProcessInstance processInstance=jbpmContext.newProcessInstance(processDefinition.getName());<br/>                businessKey="KEY15102010"+i;<br/>                processInstance.setKey(businessKey);<br/>                //processInstance=jbpmContext.getProcessInstance(processInstance.getId());<br/>                Token token=processInstance.getRootToken();<br/>                Transition transition=(Transition)token.getAvailableTransitions().iterator().next();<br/>                token.signal(transition);<br/>                //jbpmContext.save(processInstance);<br/>            }<br/>           <br/>jbpmContext.close();</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>and i have writen the following code to end a process instance</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>JbpmContext jbpmContext = JbpmConfiguration.getInstance().createJbpmContext();<br/>TaskInstance taskInstance=jbpmContext.getTaskInstance(2900);<br/>ProcessInstance processInstance=taskInstance.getProcessInstance();<br/>taskInstance.start();<br/>Token token=taskInstance.getToken();            <br/>Transition transition=(Transition)token.getAvailableTransitions().iterator().next();<br/>token.signal(transition);<br/>taskInstance.end(transition);<br/>jbpmContext.close();</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>but i am getting the following error if i am trying to execute above program.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>22:58:40,656 [main] DEBUG GraphElement : event 'task-start' on 'Task(Step1)' for 'Token(/)'<br/>22:58:41,562 [main] DEBUG GraphElement : event 'before-signal' on 'TaskNode(Step1)' for 'Token(/)'<br/>22:58:41,609 [main] DEBUG GraphElement : event 'node-leave' on 'TaskNode(Step1)' for 'Token(/)'<br/>22:58:41,609 [main] DEBUG GraphElement : event 'transition' on 'Transition(Step2)' for 'Token(/)'<br/>22:58:41,734 [main] DEBUG GraphElement : event 'node-enter' on 'TaskNode(Step2)' for 'Token(/)'<br/>22:58:41,796 [main] WARN  StatefulPersistenceContext : Narrowing proxy to class org.jbpm.graph.node.TaskNode - this operation breaks ==<br/>org.jbpm.persistence.JbpmPersistenceException: couldn't assign id to TaskInstance[Step2]<br/>22:58:42,828 [main] WARN  JDBCExceptionReporter : SQL Error: 1400, SQLState: 23000<br/>22:58:42,828 [main] ERROR JDBCExceptionReporter : ORA-01400: cannot insert NULL into ("WORKFLOW"."JBPM_TASKINSTANCE"."ID_")</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>    at org.jbpm.persistence.db.DbPersistenceService.assignId(DbPersistenceService.java:333)<br/>    at org.jbpm.svc.Services.assignId(Services.java:257)<br/>    at org.jbpm.taskmgmt.exe.TaskMgmtInstance.createTaskInstance(TaskMgmtInstance.java:116)<br/>    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)<br/>    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)<br/>    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)<br/>    at java.lang.reflect.Method.invoke(Unknown Source)<br/>    at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:157)<br/>    at org.jbpm.taskmgmt.exe.TaskMgmtInstance$$EnhancerByCGLIB$$2c2b22b2.createTaskInstance(<generated>)<br/>    at org.jbpm.graph.node.TaskNode.execute(TaskNode.java:168)<br/>    at org.jbpm.graph.def.Node.enter(Node.java:319)<br/>    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)<br/>    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)<br/>    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)<br/>    at java.lang.reflect.Method.invoke(Unknown Source)<br/>    at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:157)<br/>    at org.jbpm.graph.def.Node$$EnhancerByCGLIB$$d655f97c.enter(<generated>)<br/>    at org.jbpm.graph.def.Transition.take(Transition.java:151)<br/>    at org.jbpm.graph.def.Node.leave(Node.java:394)<br/>    at org.jbpm.graph.node.TaskNode.leave(TaskNode.java:209)<br/>    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)<br/>    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)<br/>    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)<br/>    at java.lang.reflect.Method.invoke(Unknown Source)<br/>    at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:157)<br/>    at org.jbpm.graph.node.TaskNode$$EnhancerByCGLIB$$109befc6.leave(<generated>)<br/>    at org.jbpm.graph.exe.Token.signal(Token.java:195)<br/>    at org.jbpm.graph.exe.Token.signal(Token.java:166)<br/>    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)<br/>    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)<br/>    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)<br/>    at java.lang.reflect.Method.invoke(Unknown Source)<br/>    at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:157)<br/>    at org.jbpm.graph.exe.Token$$EnhancerByCGLIB$$82e4a010.signal(<generated>)<br/>    at com.leavemanagement.TestFlow.main(TestFlow.java:28)<br/>Caused by: org.hibernate.exception.ConstraintViolationException: could not insert: [org.jbpm.taskmgmt.exe.TaskInstance]<br/>    at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:71)<br/>    at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)<br/>    at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:40)<br/>    at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2158)<br/>    at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2638)<br/>    at org.hibernate.action.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:48)<br/>    at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:248)<br/>    at org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:298)<br/>    at org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:181)<br/>    at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:107)<br/>    at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:187)<br/>    at org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:33)<br/>    at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:172)<br/>    at org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:27)<br/>    at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:70)<br/>    at org.hibernate.impl.SessionImpl.fireSave(SessionImpl.java:535)<br/>    at org.hibernate.impl.SessionImpl.save(SessionImpl.java:523)<br/>    at org.hibernate.impl.SessionImpl.save(SessionImpl.java:519)<br/>    at org.jbpm.persistence.db.DbPersistenceService.assignId(DbPersistenceService.java:330)<br/>    ... 34 more<br/>Caused by: java.sql.SQLException: ORA-01400: cannot insert NULL into ("WORKFLOW"."JBPM_TASKINSTANCE"."ID_")</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>    at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)<br/>    at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:331)<br/>    at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:288)<br/>    at oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:743)<br/>    at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:216)<br/>    at oracle.jdbc.driver.T4CPreparedStatement.executeForRows(T4CPreparedStatement.java:955)<br/>    at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1169)<br/>    at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3285)<br/>    at oracle.jdbc.driver.OraclePreparedStatement.executeUpdate(OraclePreparedStatement.java:3368)<br/>    at org.hibernate.id.IdentityGenerator$GetGeneratedKeysDelegate.executeAndExtract(IdentityGenerator.java:73)<br/>    at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:33)<br/>    ... 50 more</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><strong>Note:</strong> i am able to end a task instance if there is only one task node.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Please suggest a solution.thanks.</p></div>
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