[rules-users] JtaTransactionManager couldn't find UserTransaction

[gkalabin]

Hi everybody!
 
I'm using jBPM 5.3.0.Final, Drools 5.4.0.Final and JBoss 7.1.1.
 
I'm trying to run jbpm with human task service.

When I start processes without human tasks everything works fine. But when I
try to run process with human task I get the following exception (see full
error log in attachments):

Caused by: java.lang.NullPointerException
        at
org.drools.persistence.jta.JtaTransactionManager.getStatus(JtaTransactionManager.java:205)
[drools-persistence-jpa-5.4.0.Final.jar:5.4.0.Final]
        at
org.jbpm.task.service.persistence.TaskJTATransactionManager.getStatus(TaskJTATransactionManager.java:63)
[jbpm-human-task-core-5.3.0.Final.jar:5.3.0.Final]
        at
org.jbpm.task.service.persistence.TaskJTATransactionManager.begin(TaskJTATransactionManager.java:36)
[jbpm-human-task-core-5.3.0.Final.jar:5.3.0.Final]
        at
org.jbpm.task.service.persistence.TaskPersistenceManager.beginTransaction(TaskPersistenceManager.java:79)
[jbpm-human-task-core-5.3.0.Final.jar:5.3.0.Final]
        at
org.jbpm.task.service.TaskServiceSession.doOperationInTransaction(TaskServiceSession.java:976)
[jbpm-human-task-core-5.3.0.Final.jar:5.3.0.Final]
        ... 28 more



I init HumanTaskService and jBPM in following way:

Environment JBPM_ENVIRONMENT = KnowledgeBaseFactory.newEnvironment();
JBPM_ENVIRONMENT.set(EnvironmentName.ENTITY_MANAGER_FACTORY,
Persistence.createEntityManagerFactory("org.jbpm.persistence.jpa"));
JBPM_ENVIRONMENT.set(EnvironmentName.TRANSACTION_MANAGER,
TransactionManagerServices.getTransactionManager());
JBPM_ENVIRONMENT.set(EnvironmentName.GLOBALS, new MapGlobalResolver());
 
Properties properties = new Properties();
properties.put("drools.processInstanceManagerFactory",
"org.jbpm.persistence.processinstance.JPAProcessInstanceManagerFactory");
properties.put("drools.processSignalManagerFactory",
"org.jbpm.persistence.processinstance.JPASignalManagerFactory");
KnowledgeSessionConfiguration JBPM_CONFIG =
KnowledgeBaseFactory.newKnowledgeSessionConfiguration(properties);
 
EntityManagerFactory emf =
Persistence.createEntityManagerFactory("org.jbpm.task");
TaskService taskService = new TaskService(emf,
SystemEventListenerFactory.getSystemEventListener());
 
MinaTaskServer taskServer = new MinaTaskServer(taskService);
// start the server
Thread thread = new Thread(taskServer);
thread.start();
 
TaskClient taskClient = new TaskClient(new
MinaTaskClientConnector("myHtsClient",
                new
MinaTaskClientHandler(SystemEventListenerFactory.getSystemEventListener())));
if (!taskClient.connect(TASK_CLIENT_SERVER_ADDRESS,
TASK_CLIENT_SERVER_PORT)) {
     logger.error("Could not connect task client");
}
 
StatefulKnowledgeSession session =
JPAKnowledgeService.newStatefulKnowledgeSession(readKnowledgeBase(),
JBPM_CONFIG, JBPM_ENVIRONMENT);
session.getWorkItemManager().registerWorkItemHandler("Human Task", new
MinaHTWorkItemHandler(session));



I had an experiment: before a process start and after it I looked up the
UserTransaction:
         try {
            logger.info("found: " + new
InitialContext().lookup("java:comp/UserTransaction"));
        } catch (NamingException e) {
            logger.info("not found", e);
        }
        // start process code
 
        try {
            logger.info("found: " + new
InitialContext().lookup("java:comp/UserTransaction"));
        } catch (NamingException ex) {
            logger.info("not found", ex);
        }


The name java:comp/UserTransaction I took from
org.drools.persistence.jta.JtaTransactionManager which falls with NPE.
 
It still falls and in my log:
 
found: org.jboss.tm.usertx.client.ServerVMClientUserTransaction at 1033fb5   	  
com.example.my.jbpm.rest.ProcessManagementResources	http--127.0.0.1-8080-2	
No UserTransaction found at JNDI location [java:comp/UserTransaction]       
org.drools.persistence.jta.JtaTransactionManager	NioProcessor-2   
found: org.jboss.tm.usertx.client.ServerVMClientUserTransaction at 1033fb5     
com.example.my.jbpm.rest.ProcessManagementResources	http--127.0.0.1-8080-2	



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