I try to create a process definition without using the bpmn20.xml resource file, since I need to generate process definitions in my application dynamically. After creating process definition with ProcessDefinitionBuilder object and starting a process instance, I try to query for a task from the created process instance, but it fails. Could you point me out what I'm doing wrong, or show me any example of such dynamic process definition generation and execution as mentioned above?
Here is the source code I'm writing, the assertion at the bottom of the code fails, since no tasks are being found:
@Test
public void createProcessDefinition() {
ProcessDefinitionBuilder processDefinitionBuilder = new ProcessDefinitionBuilder();
//a map with tasks descriptions
List<Map<String, String>> activities = new ArrayList<Map<String, String>>();
Map<String, String> activity;
activity = new HashMap<String, String>();
activity.put("id", "UT1");
activity.put("name", "User task 1");
activities.add(activity);
activity = new HashMap<String, String>();
activity.put("id", "UT2");
activity.put("name", "User task 2");
activities.add(activity);
activity = new HashMap<String, String>();
activity.put("id", "UT3");
activity.put("name", "User task 3");
activities.add(activity);
// creating process definition
int len = activities.size();
for (int i = 0; i < len; i++) {
processDefinitionBuilder.createActivity(activities.get(i).get("id"));
if (i == 0) {
processDefinitionBuilder.initial();
}
processDefinitionBuilder.behavior(new ActivitiWaitState());
if (i + 1 < len) {
processDefinitionBuilder.transition(activities.get(i+1).get("id"));
}
}
PvmProcessDefinition processDefinition = processDefinitionBuilder.buildProcessDefinition();
PvmProcessInstance processInstance = processDefinition.createProcessInstance();
processInstance.start();
TaskQuery taskQuery = activitiTaskService.createTaskQuery();
List<Task> tasks = taskQuery.list();
Assert.assertTrue(tasks.size() > 0);
}
