Hello,

I've noticed in 3 different computer systems (centos, win xp, win vista) that when creating a process with a human task that only has a groupId specified (i.e. ), the following exception is thrown when reaching the point of the human task.

6:01:28,031 ERROR [stderr] (Thread-13) java.lang.IllegalArgumentException: org.hibernate.QueryParameterException: could not locate named parameter [userId]

16:01:28,031 ERROR [stderr] (Thread-13)           at org.hibernate.ejb.QueryImpl.setParameter(QueryImpl.java:206)

16:01:28,031 ERROR [stderr] (Thread-13)           at org.jbpm.task.service.TaskServiceSession.getTasksAssignedAsPotentialOwnerByStatusByGroup(TaskServiceSession.java:1011)

16:01:28,031 ERROR [stderr] (Thread-13)           at org.jbpm.task.service.TaskServerHandler.messageReceived(TaskServerHandler.java:356)

16:01:28,031 ERROR [stderr] (Thread-13)           at org.jbpm.task.service.hornetq.HornetQTaskServerHandler.messageReceived(HornetQTaskServerHandler.java:44)

16:01:28,031 ERROR [stderr] (Thread-13)           at org.jbpm.task.service.hornetq.BaseHornetQTaskServer.run(BaseHornetQTaskServer.java:85)

16:01:28,031 ERROR [stderr] (Thread-13)           at java.lang.Thread.run(Thread.java:662)

16:01:28,031 ERROR [stderr] (Thread-13) Caused by: org.hibernate.QueryParameterException: could not locate named parameter [userId]

16:01:28,031 ERROR [stderr] (Thread-13)           at org.hibernate.engine.query.ParameterMetadata.getNamedParameterDescriptor(ParameterMetadata.java:99)

16:01:28,031 ERROR [stderr] (Thread-13)           at org.hibernate.engine.query.ParameterMetadata.getNamedParameterExpectedType(ParameterMetadata.java:105)

16:01:28,031 ERROR [stderr] (Thread-13)           at org.hibernate.impl.AbstractQueryImpl.determineType(AbstractQueryImpl.java:437)

16:01:28,031 ERROR [stderr] (Thread-13)           at org.hibernate.impl.AbstractQueryImpl.setParameter(AbstractQueryImpl.java:407)

16:01:28,031 ERROR [stderr] (Thread-13)           at org.hibernate.ejb.QueryImpl.setParameter(QueryImpl.java:201)

16:01:28,031 ERROR [stderr] (Thread-13)           ... 5 more

16:01:28,031 ERROR [stderr] (Thread-33) Exception in thread "Thread-33" java.lang.RuntimeException: Client Exception with class class org.jbpm.task.service.hornetq.HornetQTaskClientConnector$1 using port 5445

16:01:28,046 ERROR [stderr] (Thread-33)           at org.jbpm.task.service.hornetq.HornetQTaskClientConnector$1.run(HornetQTaskClientConnector.java:134)

16:01:28,046 ERROR [stderr] (Thread-33)           at java.lang.Thread.run(Thread.java:662)

16:01:28,046 ERROR [stderr] (Thread-33) Caused by: java.lang.NullPointerException

16:01:28,046 ERROR [stderr] (Thread-33)           at org.jbpm.task.service.TaskClientHandler.messageReceived(TaskClientHandler.java:62)

16:01:28,046 ERROR [stderr] (Thread-33)           at org.jbpm.task.service.hornetq.HornetQTaskClientHandler.messageReceived(HornetQTaskClientHandler.java:56)

16:01:28,046 ERROR [stderr] (Thread-33)           at org.jbpm.task.service.hornetq.HornetQTaskClientConnector$1.run(HornetQTaskClientConnector.java:120)

16:01:28,046 ERROR [stderr] (Thread-33)           ... 1 more

16:01:48,031 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) java.lang.RuntimeException: Timeout : unable to retrieve results

16:01:48,031 ERROR [stderr] (http-localhost-127.0.0.1-8080-3)           at org.jbpm.task.service.responsehandlers.BlockingTaskSummaryResponseHandler.getResults(BlockingTaskSummaryResponseHandler.java:41)

16:01:48,031 ERROR [stderr] (http-localhost-127.0.0.1-8080-3)           at

...............

...............

By checking out the code of org.jbpm.task.service.TaskServiceSession at line 1011 a named query is called as follows,

Query query = tpm.createQuery("TasksAssignedAsPotentialOwnerByStatusByGroup")
                                         .setParameter("userId", userId)
                                         .setParameter("groupIds", groupIds)
                                         .setParameter("language", language)
                                         .setParameter("status", status);

However as seen in Taskorm.xml inside jbpm-human-task-core-5.3.0.Final.jar/META-INF, indeed the named query has no userId parameter

<named-query name="TasksAssignedAsPotentialOwnerByStatusByGroup">
          <query>
select
     new org.jbpm.task.query.TaskSummary(
     t.id,
     t.taskData.processInstanceId,
     name.text,
     subject.text,
     description.text,
     t.taskData.status,
     t.priority,
     t.taskData.skipable,
     t.taskData.actualOwner,
     t.taskData.createdBy,
     t.taskData.createdOn,
     t.taskData.activationTime,
     t.taskData.expirationTime,
     t.taskData.processId,
     t.taskData.processSessionId)
from
    Task t 
    left join t.taskData.createdBy 
    left join t.taskData.actualOwner
    left join t.subjects as subject
    left join t.descriptions as description
    left join t.names as name,
    OrganizationalEntity potentialOwners
where
    t.archived = 0 and
    potentialOwners.id = :groupId and
    potentialOwners in elements ( t.peopleAssignments.potentialOwners  )  and

    (
    name.language = :language
    or t.names.size = 0
    ) and

    (
    subject.language = :language
    or t.subjects.size = 0
    ) and

    (
    description.language = :language
    or t.descriptions.size = 0
    ) and

    t.taskData.status in (:status) and 

    t.taskData.expirationTime is null

          </query>
          <!-- hint name="org.hibernate.timeout" value="200"/ -->
      </named-query>

Is this the case or am i missing something??

Thanks