Flow through many tasks sequentially

[pedrosacosta]

I've various task-nodes organized sequentially.

<task-node name='task-node1'>
 <task name='Task1'>
 ...
 </task>
 <transition name='to_task2' to='task2'/>
 </task-node>

<task-node name='task-node2'>
 <task name='Task2'>
 ...
 </task>
 <transition name='to_task3' to='task3'/>
 </task-node>

<task-node name='task-node3'>
 <task name='Task3'>
 ...
 </task>
 <transition name='to_end' to='end'/>
 </task-node>

When i do taskInstance.end(), the program doesn't pass from one task to the next one. How can we make the program flow through the tasks?

I search through the forum but i didn't find a post who answers my question.

Thanks

[pedrosacosta]

I've used

TaskInstance taskInstance = (TaskInstance) processInstance.getTaskMgmtInstance() .getTaskInstances().iterator().next();

But it doesn't work.

when i do
System.out.println("Size of TaskList " + processInstance.getTaskMgmtInstance().getTaskInstances().size());

the size is 1 and not 3.

I don't understand.

those tasks are assigned to different users.

[pedrosacosta]

i've also used

taskInstance.getToken().signal();

but it doesn't work.

[pedrosacosta]

I resolved the problem.

The solution is
taskInstance=(TaskInstance)processInstance.getTaskMgmtInstance().getUnfinishedTasks(processInstance.getRootToken()).iterator().next();

[kukeltje]

simple you do not transition to tasks but to task nodes.

e.g. to='task2' should be to='task-node2'

and pay attention to capitalization

[pedrosacosta]

you're right kukeltje. But, the solution for my problem is still the one that i said.

[kukeltje]

If you want to iterate over unfinished tasks just for that processinstance you are correct.

[pedrosacosta]

I've changed the code, and the problem has appeared again.
To change through Task-nodes, saying

taskinstance.end()

is enough?

If i try to use

taskInstance = (TaskInstance) iterator.next();

to call the next task-node, the program simply blows up. I get this exception:

java.util.ConcurrentModificationException
 at java.util.HashMap$HashIterator.nextEntry(Unknown Source)
 at java.util.HashMap$KeyIterator.next(Unknown Source)
 at com.sample.WorkFlow.ListaTarefasTask(WorkFlow.java:83)
 at com.sample.Starter.main(Starter.java:11)
Exception in thread "main"