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POHibernate One-To-One relationship
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copied!<p>I see many turoials and articles about subject, but i can't understand one thing. For a example: i have "User" table with fields "id", "name" and i have "UserBanned" table with fields "userid" and "reason". UserBanned.userid - it is link (foreign key) on field User.id.</p> <p>So, models in hiberante looks like:</p> <pre><code>@Entity @Table(name = "user") @DynamicInsert public class User{ @Id @GeneratedValue(strategy = GenerationType.AUTO, generator = "user_id_generator") @SequenceGenerator(name = "user_id_generator", sequenceName = "user_id_seq") protected Integer id; @Column protected Integer name; @OneToOne (mappedBy = "user", cascade = CascadeType.ALL) protected UserBanned userBanned; </code></pre> <p>And UserBanned model:</p> <pre><code>@Entity @Table(name = "userbanned") @DynamicInsert public class UserBanned{ @Id @Column(name="userid", unique=true, nullable=false) @GeneratedValue(generator="gen") @GenericGenerator(name="gen", strategy="foreign", parameters=@Parameter(name="property", value="user")) protected Integer userid; @Column protected String reason; @OneToOne @PrimaryKeyJoinColumn protected User user; </code></pre> <p>And it works. I can create new user and banned user with this code:</p> <pre><code> User user = new User(); user.setName(name); UserBanned userBanned = new UserBanned (); userBanned.setReason(reason); user.setUserBanned(userBanned ); userBanned.setUser(user); clientService.store(user); </code></pre> <p>But, when i try to do gson.toJson(client) i got stackoverflow error - because Gson can't handle circular references in the serialized data. But my mind cant understand why i have to set User in UserBanned?! Why i can not just have model User?</p> <p>My question: how i can organize such relationship (One-To-One with foreign key) like User (there are not only UserBanned, but and UserVIP and etc entities) in hibernate?</p>

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