Spring Data JPA 中的审计和@Embedded

Question

我在 JPA 审计和@Embedded 成员方面遇到问题。考虑以下示例场景：

我在 Oracle 数据库中设置了一个测试表：

CREATE TABLE AUDIT_TEST (
  ID            NUMBER(38)   NOT NULL PRIMARY KEY,
  CREATION_DATE TIMESTAMP(6) DEFAULT SYSTIMESTAMP NOT NULL
);

我定义了一个带有审计功能的 JPA @Entity：

@Entity
@EntityListeners(AuditingEntityListener.class)
@Table(name = "AUDIT_TEST")
public class AuditTest {

  private Long id;
  private LocalDateTime creationDate;

  @Id
  @Column(name = "ID")
  public Long getId() { return id; }

  public void setId(Long id) { this.id = id; }

  @CreatedDate
  @Column(name = "CREATION_DATE")
  public LocalDateTime getCreationDate() { return creationDate; }

  public void setCreationDate(LocalDateTime creationDate) {
    this.creationDate = creationDate;
  }

}

最后，我在@Configuration 中启用了 JPA 审计：

@SpringBootApplication()
@EnableJpaAuditing()
public class AuditTestApplication {
}

到目前为止一切顺利；当我构造一个 AuditTest 实例，为其分配一个 id 并提交时，creationDate 列将按预期填充当前时间戳。

但是，当我将审计列封装在 @Embeddable 中时，事情就停止了：

@Embeddable
public class AuditTestEmbeddable {

  private LocalDateTime creationDate;

  @CreatedDate
  @Column(name = "CREATION_DATE")
  public LocalDateTime getCreationDate() { return creationDate; }

  public void setCreationDate(LocalDateTime creationDate) {
    this.creationDate = creationDate;
  }

}

然后我更改我的实体类以嵌入创建日期：

@Entity
@EntityListeners(AuditingEntityListener.class)
@Table(name = "AUDIT_TEST")
public class AuditTest {

  private Long id;
  private AuditTestEmbeddable auditTestEmbeddable = new AuditTestEmbeddable();

  @Id
  @Column(name = "ID")
  public Long getId() { return id; }

  public void setId(Long id) { this.id = id; }

  @Embedded
  public AuditTestEmbeddable getAuditTestEmbeddable() {
    return auditTestEmbeddable;
  }

  public void setAuditTestEmbeddable(AuditTestEmbeddable auditTestEmbeddable) {
    this.auditTestEmbeddable = auditTestEmbeddable;
  }

}

不幸的是，审计不再有效。

这里有人知道在使用@Embedded 类的同时保存审计功能的方法吗？

Answer 1

更新： 此功能已添加到 Spring Data 2.1 M2 (Lovelace)。 https://jira.spring.io/browse/DATACMNS-1274

目前尚不支持嵌套（可嵌入）类中的 Spring Data 审计注释。这是 the jira ticket 请求此功能。

但是，我们可以使用自定义审计侦听器在可嵌入类中设置审计信息。

以下是取自博客的示例实现：How to audit entity modifications using the JPA @EntityListeners, @Embedded, and @Embeddable annotations。

嵌入式审计

@Embeddable
public class Audit {

    @Column(name = "created_on")
    private LocalDateTime createdOn;

    @Column(name = "created_by")
    private String createdBy;

    @Column(name = "updated_on")
    private LocalDateTime updatedOn;

    @Column(name = "updated_by")
    private String updatedBy;

    //Getters and setters omitted for brevity
}

审计监听器

public class AuditListener {

    @PrePersist
    public void setCreatedOn(Auditable auditable) {
        Audit audit = auditable.getAudit();

        if(audit == null) {
            audit = new Audit();
            auditable.setAudit(audit);
        }

        audit.setCreatedOn(LocalDateTime.now());
        audit.setCreatedBy(LoggedUser.get());
    }

    @PreUpdate
    public void setUpdadtedOn(Auditable auditable) {
        Audit audit = auditable.getAudit();

        audit.setUpdatedOn(LocalDateTime.now());
        audit.setUpdatedBy(LoggedUser.get());
    }
}

可审核

public interface Auditable {

    Audit getAudit();

    void setAudit(Audit audit);
}

示例实体

@Entity
@EntityListeners(AuditListener.class)
public class Post implements Auditable {

    @Id
    private Long id;

    @Embedded
    private Audit audit;

    private String title;

  }

Answer 2

使用 spring-data 2.4.4，AuditListener 可以很好地处理嵌入式对象，请参阅 documentation spring-data

spring-data的最小版本捆绑在spring-boot 2.4.3版本