Join table issue in Spring Data JPA - join

Question

I am trying to create a view with datas which combines two tables. I successfully implemented the join and datas are displaying properly by using spring data JPA join. Here my issue is that, when I am calling findAll() method from only one table, which returns all the data including joined table also,
I joined table Users model class like:
#Entity
#Table(name = "users")
public class Users implements Serializable {
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
private Integer id;
#Column(name = "username")
public String username;
#Column(name = "password")
public String password;
#Column(name = "privid")
public Integer privid;
#OneToMany(cascade = CascadeType.ALL,mappedBy="pid")
public Set<Privillages> priviJoin;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public Integer getPrivid() {
return privid;
}
public void setPrivid(Integer privid) {
this.privid = privid;
}
public Set<Privillages> getPriviJoin() {
return priviJoin;
}
public void setPriviJoin(Set<Privillages> priviJoin) {
this.priviJoin = priviJoin;
}
public Users() {
}
}
And my second model Privillages like,
#Entity
#Table(name = "Privillages")
public class Privillages implements Serializable {
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
public Integer Id;
#Column(name = "pname")
public String pname;
#ManyToOne(optional = false)
#JoinColumn(name = "pid", referencedColumnName = "privid")
public Users pid;
public Integer getId() {
return Id;
}
public void setId(Integer id) {
Id = id;
}
public String getPname() {
return pname;
}
public void setPname(String pname) {
this.pname = pname;
}
public Users getPid() {
return pid;
}
public void setPid(Users pid) {
this.pid = pid;
}
public Privillages(){
}
}
And repository containing,
#Query("select u from Users u JOIN FETCH u.priviJoin p")
Set<Users> findByUsername();
These are all my codes, here i added. The thing is that, join is properly working with expected resultset. But when I call findAll() method , the it returns all the structure including both joined table.
I called my findAll function like,
#RequestMapping("/check")
public List<Users> check() {
return (List<Users>) userRepo.findAll();
}
But result is like I previously mentioned.Here I added its screenshot,
In this figure we can see that it returns the both table values instead of users table data.
Why is it happening like this?

Answer 1

You defined your domain type Users to contain a reference so it gets loaded as specified.
If you want something similar to a Users object but without the reference, you have two options:
Change the Users type to not contain a reference.
Use a different type, similar to Users but without the reference. There are multiple ways to do that, but probably the simplest and most helpful in the current situation is to use a projection. See https://docs.spring.io/spring-data/jpa/docs/current/reference/html/#projections