java - 休止状態で 1 対 1 のマッピングで挿入を実行する方法

Question

2 つのエンティティ間の 1 対 1 のマッピングを正常に作成しました。2 つのテーブルからデータを取得できますが、挿入を実行できません。

@Entity
@Table(name="users_test")
public class User {
    @Id
    @Column(name="user_id")
    @GeneratedValue(strategy=GenerationType.AUTO)
    private int id;
    private String username;
    private String password;
    private int enabled;

    @OneToOne(cascade = CascadeType.ALL)
    @PrimaryKeyJoinColumn
    private UserRole userRole;

       //getters and setters
}

@Entity
@Table(name = "user_roles")
public class UserRole {
    private int user_role_id;
    @Id
    @GeneratedValue(generator = "gen")
    @Column(name = "user_id", unique = true, nullable = false)
    @GenericGenerator(name="gen", strategy="foreign", parameters=@Parameter(name="property", value="user"))
    private int user_id;
    private String authority;

    @OneToOne(mappedBy="userRole", cascade=CascadeType.ALL)
    private User user;

        //getters and setters
}

このマッピングを介してテーブルから値を読み取ることができましたが、テーブルにデータを挿入しようとするとエラーが発生します。

public class Runner {
    public static void main(String[] args) {
        Runner run = new Runner();
        ApplicationContext context = new FileSystemXmlApplicationContext("E:\\applicationContext.xml");

        UserDao userDao = (UserDao) context.getBean("userDao");


        UserRole userRole = new UserRole();
        userRole.setAuthority("USER_ROLE");
        userRole.setUser_role_id(0);

        User user = new User();
        user.setUsername("ichigo");
        user.setPassword("kura");
        user.setEnabled(0);
        user.setUserRole(userRole);
        userDao.insertUser(user);
    }

}

ユーザーダオ:

@SuppressWarnings("unchecked")
@Repository
@Transactional
public class UserDao {
    @Autowired
    SessionFactory sessionFactory;

    public List<User> getUsers() {
        Session currentSession = sessionFactory.getCurrentSession();
        return currentSession.createQuery("from User").list();
    }

    public void insertUser(User user) {
        sessionFactory.getCurrentSession().save(user);
    }
}

次の例外が発生します。

Exception in thread "main" org.hibernate.id.IdentifierGenerationException: attempted to assign id from null one-to-one property [test.hibernate.model.UserRole.user]
    at org.hibernate.id.ForeignGenerator.generate(ForeignGenerator.java:101)
    at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:118)
    at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:204)
    at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:189)
    at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.performSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:114)
    at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:90)
    at org.hibernate.internal.SessionImpl.fireSaveOrUpdate(SessionImpl.java:724)
    at org.hibernate.internal.SessionImpl.saveOrUpdate(SessionImpl.java:716)
    at org.hibernate.engine.spi.CascadingAction$5.cascade(CascadingAction.java:258)
    at org.hibernate.engine.internal.Cascade.cascadeToOne(Cascade.java:380)
    at org.hibernate.engine.internal.Cascade.cascadeAssociation(Cascade.java:323)
    at org.hibernate.engine.internal.Cascade.cascadeProperty(Cascade.java:208)
    at org.hibernate.engine.internal.Cascade.cascade(Cascade.java:165)
    at org.hibernate.event.internal.AbstractSaveEventListener.cascadeAfterSave(AbstractSaveEventListener.java:448)
    at org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:293)
    at org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:193)
    at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:126)
    at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:204)
    at org.hibernate.event.internal.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:55)
    at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:189)
    at org.hibernate.event.internal.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:49)
    at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:90)
    at org.hibernate.internal.SessionImpl.fireSave(SessionImpl.java:753)
    at org.hibernate.internal.SessionImpl.save(SessionImpl.java:745)
    at org.hibernate.internal.SessionImpl.save(SessionImpl.java:741)
    at test.hibernate.dao.UserDao.insertUser(UserDao.java:24)
    at test.hibernate.dao.UserDao$$FastClassByCGLIB$$192f03a.invoke(<generated>)
    at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:191)
    at org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation.invokeJoinpoint(Cglib2AopProxy.java:689)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
    at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:622)
    at test.hibernate.dao.UserDao$$EnhancerByCGLIB$$7428e072.insertUser(<generated>)
    at test.hibernate.test.main.Runner.main(Runner.java:34)

私が間違っていることについてアドバイスをください。

編集：

返信から、コード内で外部キーが混同されているようです。質問を明確にしてください。テーブルのスキーマを投稿しています。

    CREATE TABLE `users_test` (                              
                  `USER_ID` int(10) unsigned NOT NULL AUTO_INCREMENT,    
                  `USERNAME` varchar(45) NOT NULL,                       
                  `PASSWORD` varchar(45) NOT NULL,                       
                  `ENABLED` tinyint(1) NOT NULL,                         
                  PRIMARY KEY (`USER_ID`)                                
                ) ENGINE=InnoDB AUTO_INCREMENT=113 DEFAULT CHARSET=utf8  

CREATE TABLE `user_roles` (                                                                                                   
              `USER_ROLE_ID` int(10) DEFAULT NULL,                                                                                        
              `USER_ID` int(10) unsigned NOT NULL,                                                                                        
              `AUTHORITY` varchar(45) NOT NULL,                                                                                           
              PRIMARY KEY (`USER_ID`),                                                                                                    
              KEY `FK_user_roles` (`USER_ID`),                                                                                            
              CONSTRAINT `FK_user_roles` FOREIGN KEY (`USER_ID`) REFERENCES `users_test` (`USER_ID`) ON DELETE CASCADE ON UPDATE CASCADE  
            ) ENGINE=InnoDB DEFAULT CHARSET=utf8

java - 休止状態で 1 対 1 のマッピングで挿入を実行する方法

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