[jboss-user] [JBoss jBPM] - Re: jBPM 4 : Can we get Task by using ProcessInstance?

[jbarrez]

You don't have to rely on Hibernate/SQL queries. Acquiring tasks using a process instance id is covered by the API:

 List<Task> tasks = taskService.createTaskQuery().processInstanceId(processInstanceId).list();

anonymous wrote : 1.When the process start, Does it create/persist all task defined int the process definition or it create/persist only the current active tasks? 

Tasks are only persisted when the process instance has arrived at the task activity.

anonymous wrote : 2.How does the jBPM keep orignal process definition?
  | If It keep in database Is it possible to query and reconstruct?

The process definition is persisted in the database, as a deployment lob. So you can query it an reconstruct it (this is what the engine does).

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