Question

我正在使用Dozer将我的实体映射到我的DTO 我的问题是在一个懒惰加载集合的实体上。我使用映射告诉Dozer排除集合字段以避免延迟加载异常即使有这个特定的映射，Dozer似乎试图映射集合，然后Hibernate抛出Lazy Loading异常......

这是我的具体映射：

 <mapping map-id="employe_simple">
    <class-a>ch.tupperware.tuppergestion.entity.AbstractEmployeEntity</class-a>
    <class-b>ch.tupperware.tuppergestion.dto.AbstractEmployeDto</class-b>
    <field-exclude>
      <a>listeClients</a> 
      <b>listeClients</b> 
    </field-exclude>   
    <field-exclude>
      <a>reunions</a> 
      <b>reunions</b> 
    </field-exclude>   
    <field-exclude>
      <a>responsable</a> 
      <b>responsable</b> 
    </field-exclude>   
  </mapping>

这是我的实体：

@Entity
@Inheritance(strategy = InheritanceType.SINGLE_TABLE)
@org.hibernate.annotations.DiscriminatorFormula(value="TYPE_PERSONNE")
@Table(name="EMPLOYE")
public class AbstractEmployeEntity implements UserDetails, Comparable<AbstractEmployeEntity> {

    private static final long serialVersionUID = 3577478107563521474L;

    @Id  
    @GeneratedValue(strategy=GenerationType.AUTO)  
    @Column(name = "ID_EMPLOYE") 
    private Long id;

    @Column(name= "NOM")
    private String nom;

    @Column(name = "PRENOM")
    private String prenom;

    @Column(name = "TYPE_PERSONNE")
    private TypeEmploye typePersonne;

    @OneToMany(fetch = FetchType.LAZY, mappedBy="referent")
    private Set<AbstractClientEntity> listeClients;

    @OneToMany(mappedBy="employe", fetch=FetchType.EAGER)
    @Cascade(CascadeType.PERSIST)
    private Set<RoleEntity> authorities = new HashSet<RoleEntity>();

    @OneToMany(fetch = FetchType.LAZY, mappedBy="employe")
    private Set<ReunionEntity> reunions = new TreeSet<ReunionEntity>();

    @ManyToOne(fetch = FetchType.LAZY)
    private AbstractEmployeEntity responsable;

    @Temporal(TemporalType.TIMESTAMP)
    @Column(name = "DERNIER_LOGIN")
    private Date dernierLogin;

getter and setter....
}

以下是我尝试进行特定映射的方法：

mapper.map(empl, AbstractEmployeDto.class, "employe_simple")

在我的员工集合reunions不为空的情况下，在此声明中，Hibernate会抛出延迟加载异常......

我想在集合上保持延迟加载，因为我在方法中不需要它们。这就是为什么我使用特定的映射来不映射它们。

不排除推土机收集领域

0 个答案: