Trouble executing an JPQL query - mysql

Question

I'm working with spring boot entity manger using JPQL with queries.
The following query is working correctly:
SELECT h, uh FROM Hour h, UserHour uh
But now I want to get a single result for which I use the query:
SELECT h FROM Hour h INNER JOIN UserHour uh WHERE uh.userId = 1
But then the results are zero, which is not expected.
But, when I use the SQL query:
SELECT * FROM hour
INNER JOIN user_hour
ON user_hour.hour_id = hour.hour_id
WHERE user_hour.user_id = '1'
I get the result I want.
Please help me out.
EDIT:
List<Object> result = entityManager.createQuery(
"select distinct hr " +
"from Hour hr " +
"join hr.users hu " +
"where hu.id = :userID")
.setParameter( "userID", 1)
.getResultList();
System.out.println(result);
User Entity:
package com.timely.backend.models;
import javax.persistence.*;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
#Entity
#Table(name = "USER")
public class User implements Serializable {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
private int id;
private String username;
private String password;
private String fullname;
private String email;
private String creation_date;
// user roles
#ElementCollection(targetClass = Role.class, fetch = FetchType.EAGER)
#CollectionTable(name = "user_role", joinColumns = #JoinColumn(name = "user_id"))
#Enumerated(EnumType.STRING)
private Set<Role> roles;
#ManyToMany(cascade = {
CascadeType.PERSIST,
CascadeType.MERGE
})
#JoinTable(name = "user_hour",
joinColumns = #JoinColumn(name = "userId"),
inverseJoinColumns = #JoinColumn(name = "hourId")
)
private List<Hour> hours = new ArrayList<>();
public User() {
}
public User(String username, String password, String fullname, String email, String creation_date) {
this.username = username;
this.password = password;
this.fullname = fullname;
this.email = email;
this.roles = getRoles();
this.creation_date = creation_date;
}
//If user is admin
public boolean isAdmin() {
return roles.contains(Role.ADMIN);
}
//region Getters & Setters
public void setId(int id) {
this.id = id;
}
public void setUsername(String username) {
this.username = username;
}
public void setPassword(String password) {
this.password = password;
}
public void setFullname(String fullName) {
this.fullname = fullName;
}
public void setEmail(String email) { this.email = email; }
public void setRoles(Set<Role> roles) { this.roles = roles; }
public void setCreation_date(String creation_date) { this.creation_date = creation_date; }
public int getId() { return id; }
public String getUsername() {
return username;
}
public String getPassword() {
return password;
}
public String getFullname() {
return fullname;
}
public String getEmail() { return email; }
public Set<Role> getRoles() { return roles; }
public String getCreation_date() { return creation_date; }
//endregion
}
UserHour Entity:
package com.timely.backend.models;
import javax.persistence.*;
#Entity
#Table(name = "user_hour")
public class UserHour {
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public int getUserId() {
return userId;
}
public void setUserId(int userId) {
this.userId = userId;
}
public int getHourId() {
return hourId;
}
public void setHourId(int hourId) {
this.hourId = hourId;
}
public UserHour(int userId, int hourId) {
this.userId = userId;
this.hourId = hourId;
}
public UserHour(){
}
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
private int id;
private int userId;
private int hourId;
}
Hour Entity:
package com.timely.backend.models;
import javax.persistence.*;
import java.util.ArrayList;
import java.util.List;
#Entity
#Table(name = "HOUR")
public class Hour {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
private int hourId;
private String date;
private String startTime;
private String endTime;
public Hour(int hourId, String date, String startTime, String endTime) {
this.hourId = hourId;
this.date = date;
this.startTime = startTime;
this.endTime = endTime;
}
public Hour(){
}
#ManyToMany(mappedBy = "hours")
private List<User> users = new ArrayList<>();
public int gethourId() {
return hourId;
}
public void sethourId(int hourId) {
this.hourId = hourId;
}
public String getDate() {
return date;
}
public void setDate(String date) {
this.date = date;
}
public String getStartTime() {
return startTime;
}
public void setStartTime(String startTime) {
this.startTime = startTime;
}
public String getEndTime() {
return endTime;
}
public void setEndTime(String endTime) {
this.endTime = endTime;
}
}
MySQL query working:
SELECT id, date, start_time, end_time FROM hour
JOIN user_hour
ON user_hour.hour_id = hour.hour_id
WHERE user_hour.user_id = '1'
Problem:
User Table:
UserHour Table:
Hour Table: