3:32 a.m.
Behavior of tasks completion when inside two or more
----------------------------------------------------
Key: JBPM-2528
URL: https://jira.jboss.org/jira/browse/JBPM-2528
Project: jBPM
Issue Type: Bug
Security Level: Public (Everyone can see)
Components: Runtime Engine
Affects Versions: jBPM 4.1
Environment: - jBPM Version : 4.1
- Database : MySQL 5.1
- JDK : 1.6.0_15
- Container : java -version
- Configuration : default jbpm.cfg.xml
- Libraries : default librairies
Reporter: Romain LM
I do not understand the behavior of tasks completion when they are inside two or more
forks. You will find the accurate questions in the test case comments.
[code]
<?xml version="1.0" encoding="UTF-8"?>
<process key="test1" name="test1"
xmlns="http://jbpm.org/4.0/jpdl">
<start name="start1">
<transition name="to fork1" to="fork1"/>
</start>
<fork name="fork1">
<transition name="to task1" to="task1"/>
<transition name="to task2" to="task2"/>
</fork>
<task name="task2">
<transition name="to join2" to="join2"/>
</task>
<task name="task1">
<transition name="to fork2" to="fork2"/>
</task>
<fork name="fork2">
<transition name="to task1.1" to="task1.1"/>
<transition name="to task1.2" to="task1.2"/>
</fork>
<taskname="task1.1">
<transition name="to join1" to="join1"/>
</task>
<task name="task1.2">
<transition name="to join1" to="join1"/>
</task>
<join name="join1">
<transition name="to join2" to="join2"/>
</join>
<join name="join2">
<transition name="to end1" to="end1"/>
</join>
<end name="end1"/>
</process>
[/code]
[code]
// test case which extends JbpmTestCase
public void testTaskConcurrency() {
repositoryService.createDeployment().addResourceFromClasspath("test1.jpdl.xml").deploy();
ProcessInstance processInstance =
executionService.startProcessInstanceByKey("test1");
String processInstanceId = processInstance.getId();
System.out.println("Process started:");
for (Task taskTemp :
taskService.createTaskQuery().processInstanceId(processInstanceId).list()) {
System.out.println(String.format("> Task '%s' with execution
'%s'", taskTemp.getActivityName(), taskTemp.getExecutionId()));
}
/* Output (ok):
* > Task 'task1' with execution 'test1.1.to task1'
* > Task 'task2' with execution 'test1.1.to task2'
*/
Task task =
taskService.createTaskQuery().processInstanceId(processInstanceId).activityName("task1").uniqueResult();
taskService.completeTask(task.getId());
System.out.println("task1 completed:");
for (Task taskTemp :
taskService.createTaskQuery().processInstanceId(processInstanceId).list()) {
System.out.println(String.format("> Task '%s' with execution
'%s'", taskTemp.getActivityName(), taskTemp.getExecutionId()));
}
/* Output (strange):
* > Task 'task2' with execution 'test1.1.to task2'
* > Task 'task1.1' with execution 'test1.1.to task1.1'
* > Task 'task1.2' with execution 'test1.1.to task1.2'
* > Task 'task1.1' with execution 'test1.1.to task1'
*/
/* Questions:
* Why do I have 2 different 'task1.1' (with different execution id)?
* Which one should I complete?
* Imagine task1 is not a task but a subprocess, this subprocess would be started twice.
Is it norm
al?
*/
// I cannot use the uniqueResult() method (the task I want to get is not unique)
task =
taskService.createTaskQuery().processInstanceId(processInstanceId).activityName("task1.1").list().get(0);
taskService.completeTask(task.getId());
System.out.println("task1.1 completed:");
for (Task taskTemp :
taskService.createTaskQuery().processInstanceId(processInstanceId).list()) {
System.out.println(String.format("> Task '%s' with execution
'%s'", taskTemp.getActivityName(), taskTemp.getExecutionId()));
}
/* Output (still strange):
* > Task 'task2' with execution 'test1.1.to task2'
* > Task 'task1.1' with execution 'test1.1.to task1.1'
* > Task 'task1.2' with execution 'test1.1.to task1.2'
*/
task =
taskService.createTaskQuery().processInstanceId(processInstanceId).activityName("task1.2").uniqueResult();
taskService.completeTask(task.getId());
System.out.println("task1.2 completed:");
for (Task taskTemp :
taskService.createTaskQuery().processInstanceId(processInstanceId).list()) {
System.out.println(String.format("> Task '%s' with execution
'%s'", taskTemp.getActivityName(), taskTemp.getExecutionId()));
}
/* Output (still strange):
* > Task 'task2' with execution 'test1.1.to task2'
* > Task 'task1.1' with execution 'test1.1.to task1.1'
*/
/* Question:
* I reached the first join, why do I still see the second 'task1.1'?
*/
task =
taskService.createTaskQuery().processInstanceId(processInstanceId).activityName("task2").uniqueResult();
taskService.completeTask(task.getId());
System.out.println("task2 completed:");
for (Task taskTemp :
taskService.createTaskQuery().processInstanceId(processInstanceId).list()) {
System.out.println(String.format("> Task '%s' with execution
'%s'", taskTemp.getActivityName(), taskTemp.getExecutionId()));
}
/* Output (ok):
* [nothing]
*/
}
[/code]
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