如何分配JPQL查询到一个简单的Java对象？

Question

我需要分配JPQL结果的简单类java对象的结果

我有这样的事

class myObject() {
@id
private Long id;
private String Name;
private String description;
...
//getters and setters
}

我需要以某种方式存储此SQL查询的结果，例如

//可以anytable     SELECT DISTINCT c.table_id，c.name，NULL AS描述FROM anyTable

我如何做到这一点的JPQL，然后将结果分配给我的对象？

Answer 1

的问题是非常不清楚。因此，这里是一个模糊的回答：

EntityManagerFactory emf = Persistence.createEntityManagerFactory("MyPu");
EntityManager em = emf.createEntityManager();    
Query q = em.createQuery("select f.id, f.name from Foo f");
List<Object[]> foos = (List<Object([]>)q.getResultList();

MyObject o = new MyObject();
o.setFoos(foos);

Answer 2

我想，这就是答案！

SELECT NEW entities.PersonWell(c.peopleId, c.name, c.age, c.height, c.weight)
FROM 
  People AS c;

和它的entities.PersonWell类的构造函数：

public PersonWell(Integer peopleId, String name, short age, short height, short weight, short speechspeed) {
        this.peopleId = peopleId;
        this.name = name;
        this.age = age;
        this.height = height;
        this.weight = weight;
        this.speechspeed = speechspeed;
    }

有用于结果的提取一些代码：

List<PersonWell> resultList = query.getResultList();

我希望，它会帮助你的！ ：）