Does Ignite Spring Data @Query annotation support concept of projections to retrieve a subset of fields instead of entire object?

Question

I am wondering if Apache Ignite Spring Data implementation supports the concept of projections to facilitate retrieving only a subset of the fields/attributes of cache entities instead of fetching the entire entity which may have lots of columns.

In the docs i see an example where only one attribute of the cache entity is fetched as reproduced below.

 /**
 * Getting ids of all the Person satisfying the custom query from {@link Query} annotation.
 *
 * @param orgId Query parameter.
 * @param pageable Pageable interface.
 * @return A list of Persons' ids.
 */
@Query("SELECT id FROM Person WHERE orgId > ?")
public List<Long> selectId(long orgId, Pageable pageable);

Taking the above example, how does one do this if one needs BOTH the "id" & "firstName", "lastName" of "Person" entity instead of just the "id" as above?

Thanks

UPDATE (Post the answer from @alamar): Thanks @alamar! I am also reproducing the method declaration & its usage code from Spring Data Test code so its easy for others to follow the answer.

/** */
@Query("SELECT _key, secondName FROM Person WHERE firstName REGEXP ?")
public List<List> selectSeveralField(String val, Pageable pageable);

/** */
public void testSelectSeveralFields() {
    List<List> lists = repo.selectSeveralField("^[a-z]+$", new PageRequest(2, 6));

    assertEquals(6, lists.size());

    for (List list : lists) {
        assertEquals(2, list.size());

        assertTrue(list.get(0) instanceof Integer);
    }
}

However having Spring Data Projections type mechanism which does away with troublesome casting in user code would have been nicer.

Answer 1

From Spring Data test:

@Query("SELECT _key, secondName FROM Person WHERE firstName REGEXP ?")
public List<List> selectSeveralField(String val, Pageable pageable);

E.g. yes, you can list multiple fields and get list of lists (tuples) of those fields.