[jboss-user] [jBPM] - Re: Running humantasks with HumanTaskService(Running in JBoss)

Rajan Bansal do-not-reply at jboss.com
Tue Sep 20 01:12:45 EDT 2011


Rajan Bansal [http://community.jboss.org/people/rajan01] created the discussion

"Re: Running humantasks with HumanTaskService(Running in JBoss)"

To view the discussion, visit: http://community.jboss.org/message/627353#627353

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Hi ,

Actually I want to run the stand-alone service *"HumanTaskService"* via Jboss but not by ant.
And in this I want my Oracle database is used for all the transactions instead of its own db.

So I make the necessary changes in the *+jbpm-human-task-5.1.0.Final.jar:+*

I changed the Persistence.xml as I used the JTA data-source for it:

<persistence-unit name="org.jbpm.task" transaction-type="JTA">
    <provider>org.hibernate.ejb.HibernatePersistence</provider>
*  <jta-data-source>java:/testDS1</jta-data-source>  * 
     <class>org.jbpm.task.Attachment</class>
     <class>org.jbpm.task.Content</class>
     <class>org.jbpm.task.BooleanExpression</class>
     <class>org.jbpm.task.Comment</class>
     <class>org.jbpm.task.Deadline</class>


And my datasource is:
<datasources>
  <xa-datasource>
    <jndi-name>testDS1</jndi-name>
    <xa-datasource-class>oracle.jdbc.xa.client.OracleXADataSource</xa-datasource-class>
    <xa-datasource-property name="URL">jdbc:oracle:thin:@172.xx.x.251:1521:lupin</xa-datasource-property>
   <user-name>xxxxx</user-name>
  <password>xxxxx</password>    
  </xa-datasource>
 </datasources>
 It is successfully deployed in the jboss.

But when I want to start "humantaskservice" code in the JBoss then it gives the following error when I am trying to add users:

public void startTaskService() {
        EntityManagerFactory emf = Persistence.createEntityManagerFactory("org.jbpm.task");

        TaskService taskService = new TaskService(emf, SystemEventListenerFactory.getSystemEventListener());
        TaskServiceSession taskSession = taskService.createSession();

        // Add users
        Map vars = new HashMap();
        Reader reader = new InputStreamReader( StartTaskService.class.getResourceAsStream( "LoadUsers.mvel" ) );     
        Map<String, User> users = ( Map<String, User> ) eval( reader, vars );   
        for ( User user : users.values() ) {
            taskSession.addUser( user );
        }           

        reader = new InputStreamReader( StartTaskService.class.getResourceAsStream( "LoadGroups.mvel" ) );      
        Map<String, Group> groups = ( Map<String, Group> ) eval( reader, vars );     
        for ( Group group : groups.values() ) {
            taskSession.addGroup(group);
        }

        // start server
        MinaTaskServer server = new MinaTaskServer(taskService);
        Thread thread = new Thread(server);
        thread.start();
        taskSession.dispose();
        System.out.println("Task service started correctly !");
        System.out.println("Task service running ...");
    }

*the error is:*

10:23:18,772 INFO  [SchemaExport] Running hbm2ddl schema export
10:23:18,772 INFO  [SchemaExport] exporting generated schema to database
10:23:20,895 INFO  [SchemaExport] schema export complete
10:23:20,895 INFO  [NamingHelper] JNDI InitialContext properties:{}
10:23:21,238 INFO  [STDOUT] Hibernate: select task0_.id as col_0_0_, deadline1_.id as col_1_0_, deadline1_.deadline_date as col_2_0_ from Task task0_, Deadline deadline1_ where (deadline1_.id in (select startdeadl2_.id from Deadline startdeadl2_ where task0_.id=startdeadl2_.Deadlines_StartDeadLine_Id) or deadline1_.id in (select enddeadlin3_.id from Deadline enddeadlin3_ where task0_.id=enddeadlin3_.Deadlines_EndDeadLine_Id)) and deadline1_.escalated=0 order by deadline1_.deadline_date
10:23:21,659 INFO  [STDOUT] Adding userss........
*10:23:21,691 ERROR [[springmvc]] Servlet.service() for servlet springmvc threw exception*
*java.lang.IllegalStateException: A JTA EntityManager cannot use getTransaction()*
    at org.hibernate.ejb.AbstractEntityManagerImpl.getTransaction(AbstractEntityManagerImpl.java:324)
    at org.jbpm.task.service.TaskServiceSession.doOperationInTransaction(TaskServiceSession.java:811)
    at org.jbpm.task.service.TaskServiceSession.persistInTransaction(TaskServiceSession.java:786)
    at org.jbpm.task.service.TaskServiceSession.addUser(TaskServiceSession.java:69)
    at com.service.StartTaskService.startTaskService(StartTaskService.java:54)
    at com.service.HumanTaskService.startHumanTask(HumanTaskService.java:17)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.springframework.web.servlet.mvc.multiaction.MultiActionController.invokeNamedMethod(MultiActionController.java:471)
    at org.springframework.web.servlet.mvc.multiaction.MultiActionController.handleRequestInternal(MultiActionController.java:408)
    at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:153)
    at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:560)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:235)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190)
    at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92)
    at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)
    at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:598)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
    at java.lang.Thread.run(Thread.java:662)
10:25:21,982 INFO  [ServletContextListener] Welcome to Seam 2.1.0.SP1
10:25:30,353 WARN  [Component] Component class should be serializable: org.jboss.


please tell me what to do.
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