如何将nativeQuery列表转换为JPA查询列表？

Question

I have two query list:

List<A> list1;
Query query = em.createQuery(sql);
list1=query.getResultList();
return list1;

and another list is:

List<A> list2;
Query query = em.createNativeQuery(sql);
list2=query.getResultList();
return list2;

when I tried to initialize

list1=list2

which I want to do for my requirement. But I got following exception

Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: [Ljava.lang.Object; cannot be cast to A

Please help me about this issue. Thanks

Answer 1

if A is entity, then this should works:

TypedQuery<A> query = em.createQuery(sql,A.class);
list1=query.getResultList();