Examples of javax.persistence.EntityManager.refresh()

javax.persistence.EntityManager.refresh()
Refresh the state of the instance from the database, overwriting changes made to the entity, if any. @param entity @throws IllegalStateException if this EntityManager has been closed @throws IllegalArgumentException if not an entityor entity is not managed @throws TransactionRequiredException if invoked on acontainer-managed entity manager of type PersistenceContextType.TRANSACTION and there is no transaction. @throws EntityNotFoundException if the entity no longerexists in the database

                    if (args.length > 1) {
                        id = (Integer)args[1];
                    }
                    employee = employees.get(id);
                    log.trace("Employee(before)=" + employee);
                    em.refresh(employee);
                    log.trace("Employee(after) =" + employee);
                    break;
                case RefreshWithLock:
                    id = 1;
                    if (args[1] != null) {

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                    employee = employees.get(id);
                    log.trace("Employee(before)=" + employee);
                    Map<String, Object> refreshProps = buildPropsMap(args,
                        3);
                    if (refreshProps != null) {
                        em.refresh(employee, lockMode, refreshProps);
                    } else {
                        em.refresh(employee, lockMode);
                    }
                    log.trace("Employee(after) =" + employee);
                    break;

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                    Map<String, Object> refreshProps = buildPropsMap(args,
                        3);
                    if (refreshProps != null) {
                        em.refresh(employee, lockMode, refreshProps);
                    } else {
                        em.refresh(employee, lockMode);
                    }
                    log.trace("Employee(after) =" + employee);
                    break;
                case RefreshObject:
                    em.refresh(args[1], (LockModeType) args[2]);

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                        em.refresh(employee, lockMode);
                    }
                    log.trace("Employee(after) =" + employee);
                    break;
                case RefreshObject:
                    em.refresh(args[1], (LockModeType) args[2]);
                    break;
                case Lock:
                    id = 1;
                    if (args[1] != null) {
                        id = (Integer)args[1];

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        }
      }
      itemLanguage.setRecUpdateBy(adminBean.getUser().getUserId());
      itemLanguage.setRecUpdateDatetime(new Date(System.currentTimeMillis()));
      em.flush();
      em.refresh(itemLanguage);
      
      if (itemLanguage.getImage() == null) {
        Set<?> images = itemLanguage.getImages();
        if (!images.isEmpty()) {
          ItemImage itemImage = (ItemImage) images.iterator().next();

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          images.remove(itemImage);
        }
      }
    }
    em.flush();
    em.refresh(item);
    
    JSONEscapeObject jsonResult = createJsonImages(site.getSiteId(), item, form);
    jsonResult.put("recUpdateBy", item.getRecUpdateBy());
    jsonResult.put("recUpdateDatetime", Format.getFullDatetime(item.getRecUpdateDatetime()));
    String jsonString = jsonResult.toHtmlString();

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      itemLanguage.setRecUpdateDatetime(new Date(System.currentTimeMillis()));
      em.persist(itemImage);
    }
    
    em.flush();
    em.refresh(item);
    jsonResult = createJsonImages(site.getSiteId(), item, form);
    jsonResult.put("recUpdateBy", item.getRecUpdateBy());
    jsonResult.put("recUpdateDatetime", Format.getFullDatetime(item.getRecUpdateDatetime()));
    String jsonString = jsonResult.toHtmlString();
    streamWebService(response, jsonString);

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            pollDetail.setRecUpdateBy(adminBean.getUser().getUserId());
            pollDetail.setRecUpdateDatetime(new Date(System.currentTimeMillis()));
            em.persist(pollDetail);
        }
        em.flush();
        em.refresh(pollHeader);
        
    refreshDetails(form, pollHeader);
        
        ActionForward actionForward = actionMapping.findForward("success");
        return actionForward;

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            Subject superuser = LookupUtil.getSubjectManager().getOverlord();


            /* verify role got all global permissions */
            Set<Permission> globalPermissions = SessionTestHelper.getAllGlobalPerms();
            roleManager.setPermissions(superuser, testRole.getId(), globalPermissions);
            em.refresh(testRole);
            assert SessionTestHelper.samePermissions(testRole.getPermissions(), globalPermissions) : "Failed to set global permissions";


            /* verify role still has global and got all resource permissions */
            Set<Permission> resourcePermissions = SessionTestHelper.getAllResourcePerms();
            roleManager.setPermissions(superuser, testRole.getId(), resourcePermissions);

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            assert SessionTestHelper.samePermissions(testRole.getPermissions(), globalPermissions) : "Failed to set global permissions";


            /* verify role still has global and got all resource permissions */
            Set<Permission> resourcePermissions = SessionTestHelper.getAllResourcePerms();
            roleManager.setPermissions(superuser, testRole.getId(), resourcePermissions);
            em.refresh(testRole);
            assert SessionTestHelper.samePermissions(testRole.getPermissions(), resourcePermissions) : "Failed to set resource permissions";


            /* verify role still has global and got all resource permissions */
            Set<Permission> noPermissions = EnumSet.noneOf(Permission.class);
            roleManager.setPermissions(superuser, testRole.getId(), noPermissions);

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