Hibernate Envers - 传递自定义字段

Question

我对 Hibernate Envers 有疑问。如何将自定义字段传递给 RevisionListener？例如：

我有一些带有@Audit 注释的实体，一切正常。但我不知道如何传递 "comment".

等自定义字段

@Entity
@Table(name = "REVINFO")
@RevisionEntity(MyRevisionEntityListener.class)
public class RevEntity {
    @Id
    @RevisionNumber
    @Column(name = "REV", nullable = false, updatable = false)
    private Integer id;

    @RevisionTimestamp
    @Column(name = "REVTSTMP", nullable = false, updatable = false)
    private Date timestamp;

    @Column(name = "MODIFIED_BY", length = 100)
    private String modifiedBy;

    @Column(name = "COMMENT", length = 100)
    private String comment;

public class MyRevisionEntityListener implements RevisionListener {
    @Override
    public void newRevision(Object revisionEntity) {
        RevEntity a = (RevEntity) revisionEntity;
       a.setComment("");//how can i populate it?
    }
}

那么，我该如何设置评论区呢？

编辑--------

我发现了 ThreadLocal 的一些技巧 - 但它是安全的 "active users" ?

例如：

public class CustomComment {

    public static final CustomComment INSTANCE = new CustomComment();

    private static final ThreadLocal<String> storage = new ThreadLocal<>();

    public void setComment(String comment) {
        storage.set(comment);
    }

    public String get() {
        return storage.get();
    }
}

我有修改实体的服务：

CustomComment.INSTANCE.setComment("custom comment");
someRepository.save(someEntity);

一切都如我所愿。但这种解决方案安全吗？如果有 2 个或更多人 "change" 不同的实体，这会有效吗？

Answer 1

Than everything works how i want. But is this solution safe? If 2 or more ppl "change" different entities, will this work good?

如果您在 @Transaction 内执行更新，那么事务边界内的所有内容都将在同一个线程中发生，所以一切都很好。

Hibernate Envers - 传递自定义字段

Hibernate Envers - pass custom field

java

hibernate

hibernate-envers

spring-boot