package br.com.well.modelo;

import java.io.Serializable;

import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.Table;

import org.hibernate.annotations.Cascade;
import org.hibernate.annotations.CascadeType;
import org.hibernate.annotations.Fetch;
import org.hibernate.annotations.FetchMode;

import com.fasterxml.jackson.annotation.JsonIdentityInfo;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import com.fasterxml.jackson.annotation.ObjectIdGenerators;

@Entity
//@JsonIdentityInfo(generator=ObjectIdGenerators.IntSequenceGenerator.class, property="@id")
@JsonIdentityInfo(generator=ObjectIdGenerators.IntSequenceGenerator.class)
@JsonIgnoreProperties(ignoreUnknown = false)
@Table(name = "users")
public class User implements Serializable {
    /**
     *
     */
    private static final long serialVersionUID = 1L;
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Integer idUser;
    private String userName;
    private String password;
    private boolean expired;
    private boolean locked;
    private boolean enabled;
    private String login;
    @ManyToOne(fetch = FetchType.EAGER)
    @JoinColumn(name = "idRole", insertable = true, updatable = true)
    @Fetch(FetchMode.JOIN)
    @Cascade(CascadeType.SAVE_UPDATE)
    private Role role;

    public User() {
        super();
    }



    public User(Integer idUser, String userName, String password, boolean expired, boolean locked, boolean enabled,
            String login, Role role) {
        super();
        this.idUser = idUser;
        this.userName = userName;
        this.password = password;
        this.expired = expired;
        this.locked = locked;
        this.enabled = enabled;
        this.login = login;
        this.role = role;
    }



    public User(String userName, String password, boolean expired, boolean locked, boolean enabled, String login,
            Role role) {
        super();
        this.userName = userName;
        this.password = password;
        this.expired = expired;
        this.locked = locked;
        this.enabled = enabled;
        this.login = login;
        this.role = role;
    }

    public Integer getIdUser() {
        return idUser;
    }

    public void setIdUser(Integer idUser) {
        this.idUser = idUser;
    }

    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 boolean isExpired() {
        return expired;
    }

    public void setExpired(boolean expired) {
        this.expired = expired;
    }

    public boolean isLocked() {
        return locked;
    }

    public void setLocked(boolean locked) {
        this.locked = locked;
    }

    public boolean isEnabled() {
        return enabled;
    }

    public void setEnabled(boolean enabled) {
        this.enabled = enabled;
    }

    public Role getRole() {
        return role;
    }

    public void setRole(Role role) {
        this.role = role;
    }

    public String getLogin() {
        return login;
    }

    public void setLogin(String login) {
        this.login = login;
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + ((idUser == null) ? 0 : idUser.hashCode());
        return result;
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj)
            return true;
        if (obj == null)
            return false;
        if (getClass() != obj.getClass())
            return false;
        User other = (User) obj;
        if (idUser == null) {
            if (other.idUser != null)
                return false;
        } else if (!idUser.equals(other.idUser))
            return false;
        return true;
    }


}

Role.class



   package br.com.well.modelo;

import java.io.Serializable;
import java.util.List;

import javax.persistence.CascadeType;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.OneToMany;
import javax.persistence.Table;

import com.fasterxml.jackson.annotation.JsonIdentityInfo;
import com.fasterxml.jackson.annotation.JsonIgnore;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import com.fasterxml.jackson.annotation.ObjectIdGenerators;

@Entity
//@JsonIdentityInfo(generator=ObjectIdGenerators.IntSequenceGenerator.class, property="@id")
@JsonIdentityInfo(generator=ObjectIdGenerators.IntSequenceGenerator.class)
@Table(name = "roles")

public class Role implements Serializable {

    /**
     *
     */
    private static final long serialVersionUID = 1L;
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Integer idRole;
    private String role;
    @JsonIgnore
    @OneToMany(mappedBy = "role", fetch = FetchType.EAGER, cascade = CascadeType.ALL)
    private List<User> users;

    public Role() {
        super();
    }



    public Role(Integer idRole, String role, List<User> users) {
        super();
        this.idRole = idRole;
        this.role = role;
        this.users = users;
    }



    public Role(String role, List<User> users) {
        super();
        this.role = role;
        this.users = users;
    }

    public Integer getIdRole() {
        return idRole;
    }

    public void setIdRole(Integer idRole) {
        this.idRole = idRole;
    }

    public String getRole() {
        return role;
    }

    public void setRole(String role) {
        this.role = role;
    }

    public List<User> getUsers() {
        return users;
    }

    public void setUsers(List<User> users) {
        this.users = users;
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + ((idRole == null) ? 0 : idRole.hashCode());
        return result;
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj)
            return true;
        if (obj == null)
            return false;
        if (getClass() != obj.getClass())
            return false;
        Role other = (Role) obj;
        if (idRole == null) {
            if (other.idRole != null)
                return false;
        } else if (!idRole.equals(other.idRole))
            return false;
        return true;
    }

}

@RequestMapping(value = "/getUsers", method = RequestMethod.GET)
    public ResponseEntity<List<User>> getUsers() {
        UserDao dao = new UserDao();
        List<User> users = dao.getUsers();
        for (User emp : users)
            System.out.println(emp.getUserName());
        if (users.isEmpty())
            return new ResponseEntity<List<User>>(HttpStatus.NO_CONTENT);
        return new ResponseEntity<List<User>>(users, HttpStatus.OK);
    }