JPA : How to convert a native query result set to POJO class collection

Question

I am using JPA in my project.

I came to a query in which I need to make join operation on five tables. So I created a native query which returns five fields.

Answer 1

Since others have already mentioned all the possible solutions, I am sharing my workaround solution.

In my situation with Postgres 9.4, while working with Jackson,

//Convert it to named native query.
List list = em.createNativeQuery("select cast(array_to_json(array_agg(row_to_json(a))) as text) from myschema.actors a")
                   .getResultList();

List map = new ObjectMapper().readValue(list.get(0), new TypeReference>() {});

I am sure you can find same for other databases.

Also FYI, JPA 2.0 native query results as map