[jboss-user] [jBPM] - How can I get a itemDefinition related to a process variable?

Francesco Pietrobelli [http://community.jboss.org/people/francesco.pietrobelli] created the discussion "How can I get a itemDefinition related to a process variable?" To view the discussion, visit: http://community.jboss.org/message/620413#620413 -------------------------------------------------------------- Hi guys, I would like to build forms for human activities in an automatic and dynamic fashion, but to do this I need to know the data type associated to every dataOutput of the tasks. My first idea was to retrieve the data type of a process variable inside a WorkItemHandler in the following way: public void executeWorkItem(WorkItem item, WorkItemManager manager) {      WorkflowProcessInstance currentProcess = (WorkflowProcessInstance) ksession.getProcessInstance(item.getProcessInstanceId());      HumanTaskNodeInstance currentNode = (HumanTaskNodeInstance) findNodeInstance(item.getId(), currentProcess);      Map<String, String> outMappings = ht.getHumanTaskNode().getOutMappings();      for (String outParameterName : outMappings.keySet()) {           System.out.println("Type of process variable: "+currentProcess.getVariable(outMappings.get(outParameterName)).getClass());      } }     private WorkItemNodeInstance findNodeInstance(long workItemId,NodeInstanceContainer container) {      for (NodeInstance nodeInstance : container.getNodeInstances()) {           if (nodeInstance instanceof WorkItemNodeInstance) {                WorkItemNodeInstance workItemNodeInstance = (WorkItemNodeInstance) nodeInstance;                if (workItemNodeInstance.getWorkItem().getId() == workItemId) {                     return workItemNodeInstance;                }           }           if (nodeInstance instanceof NodeInstanceContainer) {                WorkItemNodeInstance result = findNodeInstance(workItemId,((NodeInstanceContainer) nodeInstance));                if (result != null) {                     return result;                }           }      }      return null; }   But in many case outMappings.get(outParameterName) returns null because process variable wasn't set before and so and i can't invoke getClass() on it. Does any one have any suggestion? is possible to do this programmatically via API? Francesco. P.S: I'am using jBPM 5.1Final -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/620413#620413] Start a new discussion in jBPM at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]