Question

我的MDFe实体更新出现问题，在解释发生了什么之前，它们看起来像下图，我可以解释一下。

enter image description here

我们可以看到MDFe与这个MDFeDocumento的比率为1比多，MDFeDocumento与MDFeUnidadeTransporte的比率为1比多，这与MDFeUnidadeCarga的比率为1比。

CRUD此结构在整个MDFe上执行。编辑mdfe并更新实体时，mdfeDocumento会更改，但是，从那里，其他实体不会受到更改的影响。例如，如果在编辑MDFe并更改给定文档的传输单元时，在对MDFe实体进行更新时，传输单元不会受到修改。

如何进行这些插入/更改只能保存MDFe？如果你不能只插入/更新父实体，这是插入/更新另一个实体的最佳方式吗？

谢谢大家，如果对我的解释有任何疑问，我会改进。

抱歉我的英语不好，我是巴西人

字体代码：

@Entity
@Table(name = "mdfe")
public class MDFe implements IEntity {

    private static final long serialVersionUID = 1L;
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(name = "id")
    private Long id;
    @Enumerated(EnumType.ORDINAL)
    @Column(name = "modelo", nullable = false)
    private ModeloDocEnum modelo;
    @Min(value = 0)
    @Max(value = 999)
    @Column(name = "serie", nullable = false)
    private Integer serie;
    @Min(value = 0)
    @Column(name = "numero", nullable = false)
    private Long numero;
    @LazyCollection(LazyCollectionOption.FALSE)
    @OneToMany(mappedBy = "mdfe", orphanRemoval = true, cascade = CascadeType.ALL)
    private List<MDFeDocumento> mdfeDocumentos;

}


@Entity
@Table(name = "mdfe_documentos")
public class MDFeDocumento implements IEntity {

    private static final long serialVersionUID = 1L;
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(name = "id")
    private Long id;
    @Size(max = 44)
    @Column(name = "chave", nullable = true, length = 50)
    private String chave;
    @NotNull
    @ManyToOne
    @JoinColumn(name = "mdfe_id", referencedColumnName = "id", nullable = false)
    private MDFe mdfe;
    @LazyCollection(LazyCollectionOption.FALSE)
    @OneToMany(mappedBy = "mdfeDocumento", orphanRemoval = true, cascade = CascadeType.ALL)
    private List<MDFeUnidadeTransporte> unidadesTransporte;
}

public class MDFeUnidadeTransporte implements IEntity {

    private static final long serialVersionUID = 1L;
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(name = "id")
    private Long id;
    @NotNull
    @Size(max = 20)
    @Column(name = "ident_unid_transp", nullable = false, length = 20)
    private String identUnidTransp;
    @NotNull
    @Enumerated(EnumType.ORDINAL)
    @Column(name = "tipo_unid_transp", nullable = false)
    private TipoUnidadeTransporteEnum tipoUnidTransp;
    @Min(0)
    @Column(name = "quantidade_rateada", nullable = false, columnDefinition = "decimal(15,2) default 0")
    private Double quantidadeRateada;
    @LazyCollection(LazyCollectionOption.FALSE)
    @OneToMany(mappedBy = "unidadeTransporte",
            orphanRemoval = true, cascade = {CascadeType.ALL})
    private List<MDFeUnidadeCarga> unidadesCargas;
    @NotNull
    @ManyToOne
    @JoinColumn(name = "mdfe_documento_id", nullable = false, referencedColumnName = "id")
    private MDFeDocumento mdfeDocumento;
}

@Entity
@Table(name = "mdfe_unidades_cargas")
public class MDFeUnidadeCarga implements IEntity {

    private static final long serialVersionUID = 1L;
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(name = "id")
    private Long id;
    @NotNull
    @Size(max = 20)
    @Column(name = "ident_unid_carga", nullable = false, length = 20)
    private String identUnidCarga;
    @NotNull
    @Enumerated(EnumType.ORDINAL)
    @Column(name = "tipo_unid_carga", nullable = false)
    private TipoUnidadeCargaEnum tipoUnidCarga;
    @Min(0)
    @Column(name = "quantidade_rateada", nullable = false, columnDefinition = "decimal(15,2) default 0")
    private Double quantidadeRateada;
    @LazyCollection(LazyCollectionOption.FALSE)
    @ElementCollection
    @Column(name = "num_lacre", length = 60, nullable = false)
    @CollectionTable(name = "mdfe_lacres_cargas", joinColumns = @JoinColumn(name = "mdfe_cargas_id"))
    private List<String> lacres;
    @NotNull
    @ManyToOne
    @JoinColumn(name = "mdfe_unidade_transporte_id", nullable = false, referencedColumnName = "id")
    private MDFeUnidadeTransporte unidadeTransporte;

更新方法是：

@Override
public T update(T entity) {
    EntityManager em = this.getEntityManager();
    if (!em.getTransaction().isActive()) {
        em.getTransaction().begin();
    }
    entity = em.merge(entity);
    em.getTransaction().commit();
    return entity;
}

如果我有时间，我会举例说明你。

Answer 1

你应该看一下@OneToMany标签中的cascade属性，应该设置为CascadeType.ALL，你也可能需要orphanRemoval = true 发布相关代码以及您尝试过的内容。

保存实体及其所有子实体

1 个答案: