使用JPA 2.0和Hibernate选择多个实体

时间:2013-06-30 20:54:46

标签: hibernate jpa

我需要选择多个实体,用JPA 2.0映射,我正在使用Hibernate。

我正在验证用户登录。我有一个类ClienteDTO(aka Client),它扩展了一个抽象类Pessoa(Person)

@Entity
@Table(name = "cliente")
@PrimaryKeyJoinColumn(name = "id") 
public class ClienteDTO extends Pessoa implements Serializable {

private static final long serialVersionUID = 9057647385901589752L;

@OneToOne(mappedBy="cliente", cascade=CascadeType.ALL)
private LoginDTO login;

public ClienteDTO() {

}

    //get set
}

这是我的班级Pessoa(葡萄牙语中的“人”)

@Entity
@Inheritance(strategy = InheritanceType.JOINED)
@SequenceGenerator(name = "PESSOA_SEQ", sequenceName = "s_pessoa", initialValue = 1000, allocationSize = 20)
public abstract class Pessoa implements Serializable {

private static final long serialVersionUID = 5777501399478522675L;

@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "PESSOA_SEQ")
@Column(unique = true, nullable = false, updatable = false)
private Long id;

private String nome;

private String email;

private String cpf;

public Pessoa() {

}

//get set

}

这是Login类。

@Entity
@Table(name = "login")
@NamedQueries({

    @NamedQuery(name = "obterUsuarioPorUsuarioSenha", query = "select l from LoginDTO where l.usuario = :usuarioParam and l.senha = :senhaParam"),

})
public class LoginDTO implements Serializable {

private static final long serialVersionUID = 1718733412549158088L;

@Id
@Column(nullable = false)
@GeneratedValue(generator = "gen")
@GenericGenerator(name = "gen", strategy = "foreign", parameters = @Parameter(name = "property", value = "cliente"))
private Long idLoginCliente;

@OneToOne(fetch=FetchType.LAZY)
@PrimaryKeyJoinColumn
private ClienteDTO cliente;

@Column(unique = true, nullable = false)
private String usuario;

@Column(nullable = true)
private String senha;

public LoginDTO() {

}

// get set

}

我的数据库生成如下:

Table ClienteDTO(客户端)     id = 1000

表Pessoa(人)

id = 1000
nome = ABC
email = xpto@xpto.xpto
cpf = 2131313124124

表登录

idlogincliente = 1000
usuario (user) = admin
senha (password) = 8c48747q4s9c4q65

我在@NamedQuery的实体使用Login。我使用以下方法调用EJB:

public LoginDTO efetuarLogin(LoginDTO usuarioDTO) throws Exception {

    Query q = em.createNamedQuery("obterUsuarioPorUsuarioSenha");
    q.setParameter("usuarioParam", usuarioDTO.getUsuario());
    q.setParameter("senhaParam", usuarioDTO.getSenha());

    try {
        return (LoginDTO) q.getSingleResult();
    } catch (NoResultException ne) {
        throw new NoResultException(ne.getMessage());
    }

}

问题是我无法进行查询。在这种情况下,我收到了错误

  

引起:javax.persistence.NoResultException:找不到查询的实体

这是因为FETCH?或者实体的关系不正确?错误的查询?

=====================================

答案:

我只是个白痴。正如你所看到的,我正在加密我的密码..在我的托管bean上,我没有加密来自表单的密码。无论如何,这个主题可能会以某种方式帮助人们。谢谢你们。

0 个答案:

没有答案