public void updateCustomField(CustomField field) throws ApplicationException { if (field == null || ConvertUtil.isNullOrEmpty(field.getEntityName()) || ConvertUtil.isNullOrEmpty(field.getFieldName()) || ConvertUtil.isNullOrEmpty(field.getSourceFieldName())) { log.info("The custom field to be updated is invalid: " + field); throw new ApplicationException( "Unable to update custom field with an invalid custom field definition."); } Entity entity = findLatestEntityVersionByName(field.getEntityName()); EntityAttribute attrib = null; for (EntityAttribute item : entity.getAttributes()) { if (item.getName().equalsIgnoreCase(field.getFieldName()) && item.getDateVoided() == null) { attrib = item; } } if (attrib == null) { log.info("The user attempted to update a field that does not exist."); throw new ApplicationException("Unable to update an unknown custom field definition."); } attrib.setFunctionParameters(serializeParameters(field.getConfigurationParameters())); attrib.setDateChanged(new Date()); attrib.setSourceName(field.getSourceFieldName()); attrib.setTransformationFunction(field.getTransformationFunctionName()); attrib.setUserChangedBy(Context.getUserContext().getUser()); try { entityDefinitionDao.updateEntity(entity); // Generate a notification event to inform interested listeners via the lightweight mechanism // that this event has occurred. Context.notifyObserver(ObservationEventType.CUSTOM_FIELD_UPDATE_EVENT, field); } catch (DaoException e) { log.error("Failed while updating a custom field: " + e, e); throw new ApplicationException("Failed while updating the custom field: " + e.getMessage()); } }