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

I tried a lot of things as mentioned in the above answers. The SQLmapper was very confusing as to where to put it. Non managed POJOs only were a problem. I was trying various ways and one easy way I got it worked was as usual. I am using hibernate-jpa-2.1.

List testInfoList = factory.createNativeQuery(QueryConstants.RUNNING_TEST_INFO_QUERY)
                    .getResultList();

The only thing to take care was that POJO has same member variable names as that of the query ( all in lowercase). And apparently I didn't even need to tell the target class along with query as we do with TypedQueries in JPQL.

TestInfo.class

@Setter
@Getter
@NoArgsConstructor
@ToString
public class TestInfo {

    private String emailid;
    private Long testcount;

    public TestInfo(String emailId, Long testCount) {
        super();
        this.emailid = emailId;
        this.testcount = testCount;
    }

}