[jboss-dev-forums] [jBPM Development] - Task Instance Not Ending

shiva shankar [http://community.jboss.org/people/shivashankar.p] created the discussion "Task Instance Not Ending" To view the discussion, visit: http://community.jboss.org/message/569927#569927 -------------------------------------------------------------- Hi, I have following process definition. <?xml version="1.0" encoding="UTF-8"?> <process-definition xmlns="urn:jbpm.org:jpdl-3.2" name="simple">    <start-state name="start">       <transition name="Start" to="Step1"></transition>    </start-state>    <end-state name="end"></end-state>    <task-node name="Step1">       <task name="Step1">          <assignment class="com.sample.SimpleAssignmentHandler"></assignment>       </task>       <transition name="Step2" to="Step2"></transition>    </task-node>    <task-node name="Step2">       <task name="Step2"></task>       <transition name="End" to="end"></transition>    </task-node> </process-definition> i had deployed the process definition using below code. JbpmContext jbpmContext = JbpmConfiguration.getInstance().createJbpmContext(); String businessKey=""; FileInputStream fis=new FileInputStream("D:/java_pro/simple.zip"); ZipInputStream zis=new ZipInputStream(new BufferedInputStream(fis)); ProcessDefinition processDefinition=ProcessDefinition.parseParZipInputStream(zis); GraphSession gs=jbpmContext.getGraphSession(); gs.deployProcessDefinition(processDefinition); for(int i=0;i<=5;i++){                 ProcessInstance processInstance=jbpmContext.newProcessInstance(processDefinition.getName());                 businessKey="KEY15102010"+i;                 processInstance.setKey(businessKey);                 //processInstance=jbpmContext.getProcessInstance(processInstance.getId());                 Token token=processInstance.getRootToken();                 Transition transition=(Transition)token.getAvailableTransitions().iterator().next();                 token.signal(transition);                 //jbpmContext.save(processInstance);             }            jbpmContext.close(); and i have writen the following code to end a process instance JbpmContext jbpmContext = JbpmConfiguration.getInstance().createJbpmContext(); TaskInstance taskInstance=jbpmContext.getTaskInstance(2900); ProcessInstance processInstance=taskInstance.getProcessInstance(); taskInstance.start(); Token token=taskInstance.getToken();            Transition transition=(Transition)token.getAvailableTransitions().iterator().next(); token.signal(transition); taskInstance.end(transition); jbpmContext.close(); but i am getting the following error if i am trying to execute above program. 22:58:40,656 [main] DEBUG GraphElement : event 'task-start' on 'Task(Step1)' for 'Token(/)' 22:58:41,562 [main] DEBUG GraphElement : event 'before-signal' on 'TaskNode(Step1)' for 'Token(/)' 22:58:41,609 [main] DEBUG GraphElement : event 'node-leave' on 'TaskNode(Step1)' for 'Token(/)' 22:58:41,609 [main] DEBUG GraphElement : event 'transition' on 'Transition(Step2)' for 'Token(/)' 22:58:41,734 [main] DEBUG GraphElement : event 'node-enter' on 'TaskNode(Step2)' for 'Token(/)' 22:58:41,796 [main] WARN  StatefulPersistenceContext : Narrowing proxy to class org.jbpm.graph.node.TaskNode - this operation breaks == org.jbpm.persistence.JbpmPersistenceException: couldn't assign id to TaskInstance[Step2] 22:58:42,828 [main] WARN  JDBCExceptionReporter : SQL Error: 1400, SQLState: 23000 22:58:42,828 [main] ERROR JDBCExceptionReporter : ORA-01400: cannot insert NULL into ("WORKFLOW"."JBPM_TASKINSTANCE"."ID_")     at org.jbpm.persistence.db.DbPersistenceService.assignId(DbPersistenceService.java:333)     at org.jbpm.svc.Services.assignId(Services.java:257)     at org.jbpm.taskmgmt.exe.TaskMgmtInstance.createTaskInstance(TaskMgmtInstance.java:116)     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)     at java.lang.reflect.Method.invoke(Unknown Source)     at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:157)     at org.jbpm.taskmgmt.exe.TaskMgmtInstance$$EnhancerByCGLIB$$2c2b22b2.createTaskInstance(<generated>)     at org.jbpm.graph.node.TaskNode.execute(TaskNode.java:168)     at org.jbpm.graph.def.Node.enter(Node.java:319)     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)     at java.lang.reflect.Method.invoke(Unknown Source)     at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:157)     at org.jbpm.graph.def.Node$$EnhancerByCGLIB$$d655f97c.enter(<generated>)     at org.jbpm.graph.def.Transition.take(Transition.java:151)     at org.jbpm.graph.def.Node.leave(Node.java:394)     at org.jbpm.graph.node.TaskNode.leave(TaskNode.java:209)     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)     at java.lang.reflect.Method.invoke(Unknown Source)     at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:157)     at org.jbpm.graph.node.TaskNode$$EnhancerByCGLIB$$109befc6.leave(<generated>)     at org.jbpm.graph.exe.Token.signal(Token.java:195)     at org.jbpm.graph.exe.Token.signal(Token.java:166)     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)     at java.lang.reflect.Method.invoke(Unknown Source)     at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:157)     at org.jbpm.graph.exe.Token$$EnhancerByCGLIB$$82e4a010.signal(<generated>)     at com.leavemanagement.TestFlow.main(TestFlow.java:28) Caused by: org.hibernate.exception.ConstraintViolationException: could not insert: [org.jbpm.taskmgmt.exe.TaskInstance]     at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:71)     at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)     at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:40)     at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2158)     at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2638)     at org.hibernate.action.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:48)     at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:248)     at org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:298)     at org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:181)     at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:107)     at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:187)     at org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:33)     at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:172)     at org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:27)     at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:70)     at org.hibernate.impl.SessionImpl.fireSave(SessionImpl.java:535)     at org.hibernate.impl.SessionImpl.save(SessionImpl.java:523)     at org.hibernate.impl.SessionImpl.save(SessionImpl.java:519)     at org.jbpm.persistence.db.DbPersistenceService.assignId(DbPersistenceService.java:330)     ... 34 more Caused by: java.sql.SQLException: ORA-01400: cannot insert NULL into ("WORKFLOW"."JBPM_TASKINSTANCE"."ID_")     at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)     at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:331)     at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:288)     at oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:743)     at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:216)     at oracle.jdbc.driver.T4CPreparedStatement.executeForRows(T4CPreparedStatement.java:955)     at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1169)     at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3285)     at oracle.jdbc.driver.OraclePreparedStatement.executeUpdate(OraclePreparedStatement.java:3368)     at org.hibernate.id.IdentityGenerator$GetGeneratedKeysDelegate.executeAndExtract(IdentityGenerator.java:73)     at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:33)     ... 50 more *Note:* i am able to end a task instance if there is only one task node. Please suggest a solution.thanks. -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/569927#569927] Start a new discussion in jBPM Development at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]