用@OneToOne删除实体

Question

你好，我在删除实体时遇到了问题。entitymanager不会删除实体。有人看到代码中的错误吗？

错误消息:

java.lang.Assertionerror： 预期 ：null 实际 ：帐户{id=1， 客户=客户 id=1， 名字=“金”， 姓氏=“佩德森”， email='[e-mail]“， 电话号码=”90045870“， 出生=1980-11-05 00：00：00.0}， 登录名= ”登录名{Id=1， 用户名='金佩达'， 密码='金吉姆吉姆''}}

@Entity
@NamedQuery(name = "Account.getAll", query = "select a from Account a")
@SequenceGenerator(name = "SEQ_ACC", initialValue = 50)
public class Account {

@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "SEQ_ACC")
private int id;

@OneToOne(cascade = CascadeType.ALL)//, fetch = FetchType.EAGER)
@JoinColumn(name = "FK_CUSTOMER")
private Customer customer;

@OneToOne(cascade = CascadeType.ALL)
@JoinColumn(name = "FK_LOGIN")
private Login login;

    /*
-------------------------------------------
CONSTRUCTORS
-------------------------------------------
        */

public Account(Customer customer, Login login) {
    this.customer = customer;
    this.login = login;
}


public Account() {

}
// ======================================
// =            GET AND SET            =
// ======================================


public Customer getCustomer() {
    return customer;
}

public int getId() {
    return id;
}

public void setId(int id) {
    this.id = id;
}

public void setCustomer(Customer customer) {
    this.customer = customer;
}

public Login getLogin() {
    return login;
}

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

// ======================================
// =            TO STRING        =
// ======================================

@Override
public String toString() {
    return "Account{" +
            "id=" + id +
            ", customer=" + customer +
            ", login= '" + login +
            '}';
}

}

public class JpaAccountDao implements AccountDao {

@PersistenceContext(unitName = "account")
private EntityManager entityManager;

public JpaAccountDao() {
}
public JpaAccountDao(EntityManager entityManager){
    this.entityManager = entityManager;
}

@Override
public Account persist(Account account) {
    if( account == null )
        throw new IllegalArgumentException("No account could be created!");
    entityManager.persist(account);
    return account;
}

@Override
public Boolean delete(int id) {
    if( id != 0) {
        Account account = entityManager.find(Account.class,id);
        entityManager.remove(account);
        return true;
    }
    throw new IllegalArgumentException(String.format("Account with id-nr:{%d] could not be deleted =C ", id ));
}

@Override
public Account findById(int id) {
    if( id <= 0 )
        throw new IllegalArgumentException("No id was found!");
    return entityManager.find(Account.class, id);
}

@Override
public List<Account> getAll() {
    TypedQuery<Account> query =     entityManager.createNamedQuery("Account.getAll", Account.class);
    return query.getResultList();
}

}

公共类Account tServiceIT{

private EntityManager entityManager;
private EntityManagerFactory factory;
private JpaAccountDao jpaAccountDao;
private JpaCustomerDao jpaCustomerDao;
private CustomerTestCase customerTestCase;
private JpaLoginDao jpaLoginDao;
private Account account;
private Account account2;

@Before
public void setup() throws Exception {
    factory = Persistence.createEntityManagerFactory("TEST");
    entityManager = factory.createEntityManager();
    jpaAccountDao = new JpaAccountDao(entityManager);
    account = new Account();
    account2 = new Account();
}
@After
public void tearDown() throws Exception {
    entityManager.close();
    factory.close();
}

/*
Delete a account popularized via the init.script
 */
// TODO CREATE A TESTE THATS RUNS
@Test
public void deleteAccountTest() throws Exception {
    Account account = entityManager.find(Account.class, 1);
    entityManager.getTransaction().begin();
    boolean result = jpaAccountDao.delete(account.getId());
    entityManager.getTransaction().commit();

    Account res = jpaAccountDao.findById(1);
    assertEquals(res, account);
    assertNull(result);
}

}

（初始化脚本）

在书中插入（id、标题、价格、描述、编号、实例化日期）值（1，'Mio min Mio'，100.0，'BOOK about two brothers'，'8-321389213'，'2016-05-11 23:42:21'）；在书中插入（id、标题、价格、描述、编号、实例化日期）值（2，“Franks dagbok”，10.0，“关于战争和Auchwitch”，“13-321321321”，“2016-11-05 20:00:00”）；

在客户（FK_CUSTOMER，firstName，lastName，email，phoneNumber，birth）中插入值（1，'Kim'，'Pedersen'，'[e-mail]','90045870', '1980-11-05'); 在客户（FK_CUSTOMER，firstName，lastName，email，phoneNumber，birth）中插入值（2，'Silje'，'Kyrra'，'[e-mail]','45236585', '1999-1-15');

在登录（FK_LOGIN、用户名和密码）中插入值（1，'kimpeda'，'kimSimDimSum'）；在登录（FK_LOGIN、用户名和密码）中插入值（2，'Silkyra'，'SanriKorraDigo'）；

插入到帐户（id，FK_CUSTOMER，FK_LOGIN）VALUES（1,1,1）；插入到帐户（id，FK_CUSTOMER，FK_LOGIN）VALUES（2,2,2）；

Answer 1

我只是想办法。这是我的testfile=）的错误

我需要更改方法来获得一个实例，并使用该方法而不是通过entityManager =)进行删除

• 案件已解决