OrderBySupport orderBySupport = new OrderBySupport();
for (OrderByClause clause : orderByClauses) {
OrderBySupport.Item obs = new OrderBySupport.Item();
Field subjectField = ReflectionUtils.findField(attrUtil.attributableClass(), clause.getField());
if (subjectField == null) {
AbstractNormalSchema schema = schemaDAO.find(clause.getField(), attrUtil.schemaClass());
if (schema != null) {
if (schema.isUniqueConstraint()) {
orderBySupport.views.add(svs.uniqueAttr());