brings back the address associated to the Address in the response.

brings back the address associated to the User in the response.

I have a simple Spring boot JPA-Hibernate application with one to one mapping between User and Address

@Entity @Table(name = "users") public class User implements Serializable { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) @Column(name = "id") private Integer id; @Column private String name; @OneToOne(fetch = FetchType.LAZY, cascade = CascadeType.ALL, mappedBy = "user") private Address address; } 

@Entity @Table(name = "addresses") public class Address implements Serializable { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) @Column(name = "id") private Integer id; @Column private String street; @Column private String city; @JsonIgnore @OneToOne @JoinColumn(name = "user_id") private User user; } 

My problem is that whenever I call the controller mapped to get all users I am getting all the addresses associated with them as well. But I would expect FetchType.LAZY to take care of that.

But this addition brought back the lazily loaded collections into the response object.

brings back the associated children which makes me wonder if adding this bean is infact forcing the children to be loaded instead of prohibiting it which is what its supposed to do in the first place.

I have a simple Spring boot JPA-Hibernate application with one to one mapping between User and Address. (Please note that I do not have this issue with one to many mapping)

@Entity  @Table(name = "users")  public class User implements Serializable {     @Id   @GeneratedValue(strategy = GenerationType.IDENTITY)   @Column(name = "id")   private Integer id;     @Column   private String name;     @OneToOne(fetch = FetchType.LAZY, cascade = CascadeType.ALL, mappedBy = "user")   private Address address; @OneToMany(fetch = FetchType.LAZY, mappedBy = "user") private Set<Note> notes;    } 

 @Entity  @Table(name = "addresses")  public class Address implements Serializable {     @Id   @GeneratedValue(strategy = GenerationType.IDENTITY)   @Column(name = "id")   private Integer id;     @Column   private String street;     @Column   private String city;     @JsonIgnore   @OneToOne @JoinColumn(name = "user_id") private User user; } 

Note Entity

@Entity @Table(name = "notes") public class Note implements Serializable { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) @Column(name = "id") private Integer id; @Column private String date; @ManyToOne(fetch = FetchType.LAZY) @JoinColumn(name = "user_id", nullable = false)   private User user;    } 

My problem is that whenever I call the controller mapped to get all users I was getting the address and all the associated notes with it as well. But I would expect FetchType.LAZY to take care of that.

This solution above fixed the issue with the One to Many mapping but still has the Address associated in the response.

brings back the address associated to the Address in the response.

As mentioned by one of the users that it might a duplicate of another question on SO: Suggested Possible duplicate I would like to mention that I got the Lazy loading working by disabling spring.jpa.open-in-view property but adding

mapper.registerModule(new Hibernate5Module()); 

brings back the associated children which makes me wonder if adding this bean is infact forcing the children to be loaded instead of prohibiting it which is what its supposed to do in the first place.