Aliaksei Stadnik :
I have a pretty simple query which retrieves values base on "in" clause. List that comes as "in" argument is appropriately sorted.
Query :
@Query(value = "select i from ItemEntity i where i.secondaryId in :ids")
List<ItemEntity> itemsIn(@Param("ids") List<UUID> ids, Pageable pageable);
I need results to be ordered the same way as List<UUID> ids, is it possible to achieve this without plain sql but only with the help of Spring Data and/or Hibernate.
Abhilekh Singh :
You can do that by JPA too but you will have to create a comma separated list of ids in the order you want. In your case you can keep same order.
@Query(value = "select i from ItemEntity i where i.secondaryId in :ids
order by FIND_IN_SET(i.secondaryId, :idStr)")
List<ItemEntity> itemsIn(@Param("ids") List<UUID> ids, @Param("idStr") String idStr);
To create comma separated list you can java 8 stream:
ids.stream().map(Object::toString).collect(Collectors.joining(","));
Example:
SELECT id FROM User WHERE id in (2,3,1)
ORDER BY FIND_IN_SET(id,"2,3,1");
Result:
+----+
| id |
+----+
| 2 |
| 3 |
| 1 |
+----+
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