Java 跨多个实体使用相同UUID的策略
我在JPA中有一个实体类,如下所示,maId充当许多其他表的主键和外键Java 跨多个实体使用相同UUID的策略,java,spring-boot,hibernate,jpa,spring-data-jpa,Java,Spring Boot,Hibernate,Jpa,Spring Data Jpa,我在JPA中有一个实体类,如下所示,maId充当许多其他表的主键和外键 @Table(name = "Table1") public class Test implements Serializable { @Id @Column(name = "maId", updatable = false, nullable = false) private String id; @OneToOne(optional = fals
@Table(name = "Table1")
public class Test implements Serializable {
@Id
@Column(name = "maId", updatable = false, nullable = false)
private String id;
@OneToOne(optional = false, fetch = FetchType.LAZY, cascade = CascadeType.ALL)
@JoinColumn(name="maId")
private MFieldData fieldData;
@OneToOne(optional = false, fetch = FetchType.LAZY, cascade = CascadeType.ALL)
@JoinColumn(name="maId")
private MPS mps;
@OneToOne(optional = false, fetch = FetchType.LAZY, cascade = CascadeType.ALL)
@JoinColumn(name="maId")
private MJob mJob;
@OneToMany(fetch = FetchType.LAZY, cascade = CascadeType.ALL)
@JoinColumn(name="maId")
private List<MExtension> mlExtensions;
private Date createdDate;
private Date lastUpdatedDate;
}
当我收到请求时,这就是API。我需要跨多个表插入数据
任何帮助都将不胜感激 请求必须传递UUID(称为关联id)以跟踪。可以使用。若在代码中生成,调用方可能不知道它。相关id用于跟踪由于事件发布而可能在系统间传播的请求数据。您可能正在为#2查找
@MapsId
。这是两个独立的问题。请将它们分开张贴。这里回答了一个问题,另一个问题需要更多关于实际问题的细节。@Jenschauder更新了我的问题。
@Table(name = "table 2")
public class Test implements Serializable {
@Id
@Column(name = "maId", updatable = false, nullable = false)
private String maId;
private Integer cmd;
private String routeId;
}