Question

每当执行此查询时，我都会遇到JPA问题

@NamedQuery(name = "Usuario.getUsuarioIntento", query = "SELECT  u.intentos_id FROM Usuario u WHERE u.username = :username and u.borrado = 0")

我收到此错误：

java.lang.IllegalArgumentException: NamedQuery of name: Usuario.getUsuarioIntento not found.

但如果我执行此查询

@NamedQuery(name = "Usuario.getUsuarioIntento", query = "SELECT  u.id FROM Usuario u WHERE u.username = :username and u.borrado = 0")

工作正常，为什么？

我的桌子，Usuario：

MY USER TABLE

我尝试使用其他专栏作为'superusuario'，'version_jpa'并且不起作用，唯一正常工作的列是'id，'borrado'和'username'

Class Usuario：

@Temporal(TemporalType.TIMESTAMP)
private Date                fechaCreacion;

@Id
@GeneratedValue (strategy=GenerationType.AUTO)
private int                 id;

@OneToOne(cascade = CascadeType.ALL)
private Password            password;

@OneToMany(cascade = {CascadeType.PERSIST, CascadeType.REFRESH}, fetch = FetchType.LAZY)
private List<Password>      clavesAntiguas;

@OneToOne
private Persona             persona;

private String              sessionId;

private String              username;

@ManyToOne(cascade = CascadeType.REFRESH)
private Rol                 rol;

@ManyToOne(cascade = CascadeType.REFRESH)
private Perfil              perfil;

@OneToOne (cascade = CascadeType.ALL)
private IntentosBloqueo     intentos;

private boolean             superUsuario;

private int                 borrado;
private int                 esManager;

@OneToMany ( cascade = {CascadeType.ALL} , fetch = FetchType.LAZY)
private Collection<UsuarioSociedad> sociedades; 

@OneToMany(fetch = FetchType.EAGER, cascade = CascadeType.REFRESH)
  @JoinTable (name="USR_UND_VIS",
  joinColumns={
   @JoinColumn (name="ID_USU", table="USUARIO", referencedColumnName="ID"),
  },
  inverseJoinColumns= 
   @JoinColumn (name="ID_UNI", table="UND_ORG", referencedColumnName="ID")
  )
  private List<UnidadOrganizativa> unidadesVisibles;

@OneToMany(fetch = FetchType.EAGER, cascade = CascadeType.REFRESH)
  @JoinTable (name="USR_UND_DIS",
  joinColumns={
   @JoinColumn (name="ID_USU", table="USUARIO", referencedColumnName="ID"),
  },
  inverseJoinColumns= 
   @JoinColumn (name="ID_UNI", table="UND_ORG", referencedColumnName="ID")
  )
  private List<UnidadOrganizativa> unidadesDisponibles;

Answer 1

因为命名查询适用于Entity objetc而不是数据库列。您尝试查找包含该id的另一个实体对象。在这种情况下，您的命名查询将为您提供该实体类的对象，并且从该对象，您可以获得该实体的id或whtever fiels。

JPA命名查询与SQL或oracle查询不同。

在数据库中我的列名是xyz，但在实体中你的列名是ABC，那么你必须在命名查询而不是XYZ中获取ABC。

带有toplink和JPA的java.lang.IllegalArgumentException

1 个答案: