/** * Returns all history steps for a workflow, i.e., all the steps that have already been performed. * * @param userPrincipal a user principal * @param workflowId the ID of the desired workflow * @return a list of WorkflowStepVOs representing all history steps for the workflow with * workflowId */ public List getHistorySteps(InfoGluePrincipal userPrincipal, long workflowId) { List historySteps = new ArrayList(); Session session = null; net.sf.hibernate.Transaction tx = null; try { session = hibernateSessionFactory.openSession(); tx = session.beginTransaction(); WorkflowFacade wf = new WorkflowFacade(userPrincipal, workflowId, hibernateSessionFactory, session); historySteps = wf.getHistorySteps(); session.flush(); tx.commit(); } catch (Exception e) { logger.error("An error occurred when we tries to run getHistorySteps():" + e.getMessage(), e); try { tx.rollback(); } catch (HibernateException he) { logger.error( "An error occurred when we tries to rollback transaction:" + he.getMessage(), he); } restoreSessionFactory(e); } finally { try { session.close(); } catch (HibernateException e) { logger.error("An error occurred when we tries to close session:" + e.getMessage(), e); } } return historySteps; // return new WorkflowFacade(userPrincipal, workflowId, true).getHistorySteps(); }