How to use

with

method

in

org.springframework.data.domain.Sort$Order

/**
 * Converts the given {@link OrderSpecifier} into an {@link Order}.
 *
 * @param orderSpecifier must not be {@literal null}.
 * @return
 */
private static Order toOrder(OrderSpecifier<?> orderSpecifier) {
  Assert.notNull(orderSpecifier, "Order specifier must not be null!");
  Expression<?> target = orderSpecifier.getTarget();
  Object targetElement = target instanceof Path ? preparePropertyPath((Path<?>) target) : target;
  Assert.notNull(targetElement, "Target element must not be null!");
  return Order.by(targetElement.toString()).with(orderSpecifier.isAscending() ? Direction.ASC : Direction.DESC);
}

@Override
public Sort getMappedSort(Class<?> typeToRead, Sort sort) {
  RelationalPersistentEntity<?> entity = getPersistentEntity(typeToRead);
  if (entity == null) {
    return sort;
  }
  List<Order> mappedOrder = new ArrayList<>();
  for (Order order : sort) {
    RelationalPersistentProperty persistentProperty = entity.getPersistentProperty(order.getProperty());
    if (persistentProperty == null) {
      mappedOrder.add(order);
    } else {
      mappedOrder
          .add(Order.by(persistentProperty.getColumnName()).with(order.getNullHandling()).with(order.getDirection()));
    }
  }
  return Sort.by(mappedOrder);
}

@Override
public Sort getMappedSort(Class<?> typeToRead, Sort sort) {
  RelationalPersistentEntity<?> entity = getPersistentEntity(typeToRead);
  if (entity == null) {
    return sort;
  }
  List<Order> mappedOrder = new ArrayList<>();
  for (Order order : sort) {
    RelationalPersistentProperty persistentProperty = entity.getPersistentProperty(order.getProperty());
    if (persistentProperty == null) {
      mappedOrder.add(order);
    } else {
      mappedOrder
          .add(Order.by(persistentProperty.getColumnName()).with(order.getNullHandling()).with(order.getDirection()));
    }
  }
  return Sort.by(mappedOrder);
}

/**
 * Returns a {@link Order} with {@link NullHandling#NULLS_LAST} as null handling hint.
 *
 * @return
 * @since 1.7
 */
public Order nullsLast() {
  return with(NullHandling.NULLS_LAST);
}

/**
 * Returns a {@link Order} with {@link NullHandling#NATIVE} as null handling hint.
 *
 * @return
 * @since 1.7
 */
public Order nullsNative() {
  return with(NullHandling.NATIVE);
}

/**
 * Returns a {@link Order} with {@link NullHandling#NULLS_FIRST} as null handling hint.
 *
 * @return
 * @since 1.8
 */
public Order nullsFirst() {
  return with(NullHandling.NULLS_FIRST);
}