How to Map Native Query result to java Class

Question

I am working on java nativequery in jpa.I have get result in class Practice but how i map the distance variable to my Practice class .Please help me.

List<Practice> resultData=(List<Practice>)em.createNativeQuery("SELECT *, ( 3959 * acos( cos( radians(?1) ) * cos( radians( latitude ) ) * cos( radians( longitude ) - radians(?2) ) + sin( radians(?1) ) * sin( radians( latitude ) ) ) ) AS distance FROM tb_practice HAVING distance < 200 ORDER BY distance;",Practice.class)
        .setParameter(1, latitude)
        .setParameter(2, longitude)
        .getResultList();

This is Result of my query: Please help how to map distance variable to my class practice.

---

@Entity(name = "tb_practice")
public class Practice {

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private long id;

    private String address;

    private String city;

    private String distance;
}

This is Pratice table.

Answer 1

I think you need both a group by as a derived table expression.

You need to list all tb_practice table columns instead of column1...columnN, so this is your query:

List<Practice> resultData= (List<Practice>)
    em.createNativeQuery("
    SELECT NEW Practice(    
        p.id, 
        p.address,
        p.city) 
    FROM 
    (   
        SELECT 
            p.id, 
            p.address,
            p.city,
            ( 3959 * acos( cos( radians(?1) ) * cos( radians( latitude ) ) * cos( radians( longitude ) - radians(?2) ) + sin( radians(?1) ) * sin( radians( latitude ) ) ) ) AS distance 
        FROM 
            tb_practice 
        GROUP BY
            p.id, 
            p.address,
            p.city
        HAVING distance < 200 
        ORDER BY distance
    ) practice_by_distance  
    ",Practice.class)
    .setParameter(1, latitude)
    .setParameter(2, longitude)
    .getResultList();